First Published: November 30, 2020

Release Notes for Cisco Catalyst 9500 Series Switches, Cisco IOS XE Bengaluru 17.4.x

Introduction

Cisco Catalyst 9500 Series Switches and Cisco Catalyst 9500 Series Switches - High Performance are leading, fixed, core and aggregation enterprise switching platforms and have been purpose-built to address emerging trends in security, IoT, mobility, and cloud.

These switches deliver complete convergence in terms of ASIC architecture with Unified Access Data Plane (UADP) 2.0 on Cisco Catalyst 9500 Series Switches and UADP 3.0 on Cisco Catalyst 9500 Series Switches - High Performance. The platform runs an open Cisco IOS XE that supports model-driven programmability. This series forms the foundational building block for Software-Defined Access (SD-Access), which is Cisco’s lead enterprise architecture.


Note
With the introduction of the High Performance models in the series, there may be differences in the supported and unsupported features, limitations, and caveats that apply to the Cisco Catalyst 9500 Series Switches and Cisco Catalyst 9500 Series Switches - High Performance models. Throughout this release notes document, any such differences are expressly called out. If they are not, the information applies to all the models in the series.

Whats New in Cisco IOS XE Bengaluru 17.4.1

Hardware Features in Cisco IOS XE Bengaluru 17.4.1

Table 1. Hardware Features Introduced on Cisco Catalyst 9500 Series Switches (C9500-12Q, C9500-16X, C9500-24Q, C9500-40X)

There are no new hardware features for the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X switch models in this release.

Table 2. Hardware Features Introduced on Cisco Catalyst 9500 Series Switches-High Performance (C9500-24Y4C, C9500-32C, C9500-32QC, and C9500-48Y4C

Feature Name

Description and Documentation Link

Cisco 10GBASE SFP+ modules

  • Supported transceiver module product numbers:

    • SFP-10G-T-X

    • SFP-10G-LRM (Up to 150m with OM1 and OM2 fibers)

  • Compatible switch models—C9500-24Y4C, C9500-48Y4C

See Limitations and Restrictions → Hardware Limitations — Optics, before using these modules.

For information about the module, see Cisco 10GBASE SFP+ Modules Data Sheet. For information about device compatibility, see the Transceiver Module Group (TMG) Compatibility Matrix.

Cisco 100GBASE QSFP-100G Modules

  • Supported transceiver module product numbers:

    • QSFP-100G-LR-S

      Compatible switch models—C9500-32C, C9500-32QC

    • QSFP-100G-FR-S

      Compatible switch models—C9500-32C

For information about the module, see Cisco 100GBASE QSFP-100G Modules Data Sheet. For information about device compatibility, see the Transceiver Module Group (TMG) Compatibility Matrix.

Software Features in Cisco IOS XE Bengaluru 17.4.1

Software Features Introduced on All Models

Feature Name

Description, Documentation Link, and License Level Information

BGP Large Community

Introduces support for BGP large communities attribute which provides the capability for tagging routes and modifying BGP routing policy on devices. They are similar to BGP communities attributes, but with a twelve octet size.

See IP Routing → Configuring BGP Large Community

(Network Essentials and Network Advantage)

Line Configuration for Disabling Auto-Consolidation

Introduces support for the no line auto-consolidation command in line configuration mode. This command disables the auto consolidation of line commands during the nonvolatile generation (NVGEN) process.

See System Management → Line Auto Consolidation

(Network Essentials and Network Advantage)

Device Classifier Profiles

Allows you to configure the rules for matching and classifying the device using device classifier conditions.

See Interface and Hardware Components → Configuring Auto SmartPorts.

(Network Essentials and Network Advantage)

VRF-Aware RADIUS Automated Tester

Allows you to configure RADIUS automated tester for a non-default VRF. With this, the automated tester can access information about VRF and source-interface from the global source-interface and avoids marking the server as DEAD.

See Security → VRF Aware RADIUS Automated Testing

(Network Essentials and Network Advantage)

Programmability

  • OpenFlow Rewrite Fields

  • YANG Data Models

The following programmability features are introduced in this release:

  • OpenFlow Rewrite Fields: Introduces support for rewriting ipv4_src, ipv4_dst, icmpv4_type, tcp_src, udp_src, tcp_dst, udp_dst, ip_dscp fields .

  • YANG Data Models: For the list of Cisco IOS XE YANG models available with this release, navigate to: https://github.com/YangModels/yang/tree/master/vendor/cisco/xe/1741.

    Revision statements embedded in the YANG files indicate if there has been a model revision. The README.md file in the same GitHub location highlights changes that have been made in the release.

(Network Essentials and Network Advantage)

RadSec over TLS and DTLS

RadSec over Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) is now supported on both client and device servers.

(Network Essentials and Network Advantage)

New on the Web UI

  • Smart Licensing Using Policy

  • Stealthwatch Cloud support for NetFlow monitoring

Use the WebUI for:

  • Smart Licensing Using Policy—Any new licenses that you purchase are added to a Cisco Smart Account. Smart licenses are no longer device-specific, but organization-specific. You can create separate Virtual Accounts for different departments in your organization and assign licenses to them from the centralized pool, thereby improving license portability and efficient consumption.

    Different Virtual Accounts can be assigned licenses that can be used to register product instances using a registration token. When a device is no longer in use by a department, the license can be provisioned to another department or pooled back to the Smart Account. Also, you can choose the deployment option, based on your security profile, such as direct, on-premise, and offline.

  • Stealthwatch Cloud support for NetFlow monitoring—Allows you to monitor packets to detect threats and security vulnerabilities in your public cloud network powered by Cisco Stealthwatch Cloud.

Serviceability

See Command Reference, Cisco IOS XE Amsterdam 17.4.x (Catalyst 9500 Switches).

show etherchannel

The command was modified. The platform keyword was introduced. It displays summary of channel-group for the specified platform.

Software Features Introduced on Cisco Catalyst 9500 Series Switches

None. See Software Features Introduced on All Models.

Software Features Introduced on Cisco Catalyst 9500 Series Switches-High Performance

Feature Name

Description, Documentation Link, and License Level Information

Customizable Switching Database Manager (SDM) Templates for ACL Features

Allows you to configure a customizable SDM template for ACL features. In the customized template, you can assign resources to different ACL features based on your requirement.

See System Management →Customizable SDM Templates for ACL Features

(Network Essentials and Network Advantage)

Important Notes

Cisco StackWise Virtual: Supported and Unsupported Features

The following is a list of features that are supported or unsupported when you enable Cisco StackWise Virtual on a device:

  • Layer 2, Layer 3, Security, Quality of Service, Multicast, Application, Monitoring and Management, Multiprotocol Label Switching, High Availability, BGP EVPN VXLAN, Remote Switched Port Analyzer, and Sofware Defined Access are supported.

    Contact the Cisco Technical Support Centre for the specific list of features that are supported under each one of these technologies.

  • Resilient Ethernet Protocol is not supported.

Unsupported Features: All Models

  • IPsec VPN

  • Performance Monitoring (PerfMon)

  • Virtual Routing and Forwarding-Aware (VRF-Aware) web authentication

  • Resilient Ethernet Protocol (REP)


    Note

    REP is not supported only in this release. See CSCvv91619 and CSCvw17155 for details.

Unsupported Features: Cisco Catalyst 9500 Series Switches

  • Border Gateway Protocol (BGP) Additional Paths

  • Cisco TrustSec Network Device Admission Control (NDAC) on Uplinks

  • Flexible NetFlow: NetFlow v5 Export Protocol, 4-byte (32-bit) AS Number Support, TrustSec NetFlow IPv4 Security Group Access Control List (SGACL) Deny and Drop Export

  • Lawful Intercept

  • Network-Powered Lighting (including COAP Proxy Server, 2-event Classification, Perpetual POE, Fast PoE)

  • PIM Bidirectional Forwarding Detection (PIM BFD), PIM Snooping.

  • QinQ VLAN Mapping

  • Quality of Service: Classification (Layer 3 Packet Length, Time-to-Live (TTL)), per queue policer support, sharped profile enablement for egress per port queue, L2 Miss, Ingress Packet FIFO (IPF)

  • Unicast over Point-to-Multipoint (P2MP) Generic Routing Encapsulation (GRE), Multicast over P2MP GRE.

Unsupported Features: Cisco Catalyst 9500 Series Switches - High Performance

  • Cisco Application Visibility and Control (AVC)

  • MPLS Label Distribution Protocol (MPLS LDP) VRF-Aware Static Labels

  • Network-Based Application Recognition (NBAR) and Next-Generation NBAR (NBAR2)

  • QoS Options on GRE Tunnel Interfaces

Complete List of Supported Features

For the complete list of features supported on a platform, see the Cisco Feature Navigator at: https://cfnng.cisco.com.

Choose the following in the context of the Cisco Catalyst 9500 Series Switches:

  • CAT9500: to see all the features supported on the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models

  • CAT9500 HIGH PERFORMANCE (32C; 32QC; 48Y4C; 24Y4C): to see all the features supported on the C9500-24Y4C, C9500-32C, C9500-32QC, and C9500-48Y4C models

Accessing Hidden Commands

From Cisco IOS XE Fuji 16.8.1a, as an improved security measure, the way in which hidden commands can be accessed has changed.

Hidden commands have always been present in Cisco IOS XE, but were not equipped with CLI help. That is, entering a question mark (?) at the system prompt did not display the list of available commands. Hidden commands are only meant to assist Cisco TAC in advanced troubleshooting, and are not documented either.

From Cisco IOS XE Fuji 16.8.1a, hidden commands are available under:

  • Category 1: Hidden commands in Privileged or User EXEC mode. Enter the service internal command to access these commands.

  • Category 2: Hidden commands in one of the configuration modes (global, interface, and so on).

Further, the following points apply to hidden commands under Category 1 and 2:

  • The commands have CLI help. Enter a question mark (?) at the system prompt to display the list of available commands.

    Note: For Category 1, enter the service internal command before you enter the question mark; you do not have to do this for Category 2.

  • The system generates a %PARSER-5-HIDDEN syslog message when a hidden command is used. The following is an example: 
    *Feb 14 10:44:37.917: %PARSER-5-HIDDEN: Warning!!! 'show processes memory old-header ' is a hidden command. 
Use of this command is not recommended/supported and will be removed in future.

Apart from categories 1 and 2, there are other internal commands displayed on the CLI, for which the system does not generate the %PARSER-5-HIDDEN syslog message.


Note

We recommend that you use any hidden command only under TAC supervision.

If you find that you need to use a hidden command, open a TAC case for help with finding another way of collecting the same information as the hidden command (for a hidden EXEC mode command), or to configure the same functionality (for a hidden configuration mode command) using nonhidden commands.

Default Behaviour—All Models

Beginning from Cisco IOS XE Gibraltar 16.12.5 and later, do not fragment bit (DF bit) in the IP packet is always set to 0 for all outgoing RADIUS packets (packets that originate from the device towards the RADIUS server).

Default Interface Behaviour on Cisco Catalyst 9500 Series Switches - High Performance Only

From Cisco IOS XE Gibraltar 16.11.1, the default interface for all High Performance models in the series changes from Layer 3 to Layer 2. Use the no switchport command to change the Layer 2 interface into Layer 3 mode.

The startup configuration has explicit configuration of the switchport command for Layer 2 interfaces and the no switchport command for Layer 3 interfaces to address this change in behaviour and to support seamless migration.

Supported Hardware

Cisco Catalyst 9500 Series Switches—Model Numbers

The following table lists the supported hardware models and the default license levels they are delivered with. For more information about the available license levels, see section License Levels.

Base PIDs are the model numbers of the switch.

Bundled PIDs indicate the orderable part numbers for base PIDs that are bundled with a particular network module. Entering the show version , show module , or show inventory commands on such a switch (bundled PID), displays its base PID.

Table 3. Cisco Catalyst 9500 Series Switches

Switch Model

Default License Level1

Description

Base PIDs

C9500-12Q-E

Network Essentials

12 40-Gigabit Ethernet QSFP+ ports and two power supply slots

C9500-12Q-A

Network Advantage

C9500-16X-E

Network Essentials

16 1/10-Gigabit Ethernet SFP/SFP+ ports and two power supply slots

C9500-16X-A

Network Advantage

C9500-24Q-E

Network Essentials

24-Port 40-Gigabit Ethernet QSFP+ ports and two power supply slots

C9500-24Q-A

Network Advantage

C9500-40X-E

Network Essentials

40 1/10-Gigabit Ethernet SFP/SFP+ ports and two power supply slots

C9500-40X-A

Network Advantage

Bundled PIDs

C9500-16X-2Q-E

Network Essentials

16 10-Gigabit Ethernet SFP+ port switch and a 2-Port 40-Gigabit Ethernet (QSFP) network module on uplink ports

C9500-16X-2Q-A

Network Advantage

C9500-24X-E

Network Essentials

16 10-Gigabit Ethernet SFP+ port switch and an 8-Port 10-Gigabit Ethernet (SFP) network module on uplink ports

C9500-24X-A

Network Advantage

C9500-40X-2Q-E

Network Essentials

40 10-Gigabit Ethernet SFP+ port switch and a 2-Port 40-Gigabit Ethernet (QSFP) network module on uplink ports

C9500-40X-2Q-A

Network Advantage

C9500-48X-E

Network Essentials

40 10-Gigabit Ethernet SFP+ port switch and an 8-Port 10-Gigabit Ethernet (SFP) network module on uplink ports

C9500-48X-A

Network Advantage
1 See section Licensing → Table: Permitted Combinations, in this document for information about the add-on licenses that you can order.
Table 4. Cisco Catalyst 9500 Series Switches-High Performance

Switch Model

Default License Level2

Description

C9500-24Y4C-E

Network Essentials

24 SFP28 ports that support 1/10/25-GigabitEthernet connectivity, four QSFP uplink ports that support 100/40-GigabitEthernet connectivity; two power supply slots.

C9500-24Y4C-A

Network Advantage

C9500-32C-E

Network Essentials

32 QSFP28 ports that support 40/100 GigabitEthernet connectivity; two power supply slots.

C9500-32C-A

Network Advantage

C9500-32QC-E

Network Essentials

32 QSFP28 ports, where you can have 24 ports that support 40-GigabitEthernet connectivity and 4 ports that support 100-GigabitEthernet connectivity, OR 32 ports that support 40-GigabitEthernet connectivity, OR 16 ports that support 100-GigabitEthernet connectivity; two power supply slots.

C9500-32QC-A

Network Advantage

C9500-48Y4C-E

Network Essentials

48 SFP28 ports that support 1/10/25-GigabitEthernet connectivity; four QSFP uplink ports that supports up to 100/40-GigabitEthernet connectivity; two power supply slots.

C9500-48Y4C-A

Network Advantage
2 See section Licensing → Table: Permitted Combinations, in this document for information about the add-on licenses that you can order.

Network Modules

The following table lists optional network modules for uplink ports available with some configurations .

Network Module

Description

C9500-NM-8X

Cisco Catalyst 9500 Series Network Module 8-port 1/10 Gigabit Ethernet with SFP/SFP+

Note the supported switch models (Base PIDs):

  • C9500-40X

  • C9500-16X

C9500-NM-2Q

Cisco Catalyst 9500 Series Network Module 2-port 40 Gigabit Ethernet with QSFP+

Note the supported switch models (Base PIDs):

  • C9500-40X

  • C9500-16X

Compatibility Matrix

The following table provides software compatibility information between Cisco Catalyst 9500 Series Switches, Cisco Identity Services Engine, Cisco Access Control Server, and Cisco Prime Infrastructure.

Catalyst 9500, 9500-High Performance and 9500X

Cisco Identity Services Engine

Cisco Access Control Server

Cisco Prime Infrastructure

Amsterdam 17.3.8a

2.7

-

PI 3.10 + PI 3.10 latest maintenance release + PI 3.10 latest device pack

See Cisco Prime Infrastructure 3.10 → Downloads.

Amsterdam 17.3.8

2.7

-

PI 3.10 + PI 3.10 latest maintenance release + PI 3.10 latest device pack

See Cisco Prime Infrastructure 3.10 → Downloads.

Amsterdam 17.3.7

2.7

-

PI 3.10 + PI 3.10 latest maintenance release + PI 3.10 latest device pack

See Cisco Prime Infrastructure 3.10 → Downloads.

Amsterdam 17.3.6

2.7

-

PI 3.10 + PI 3.10 latest maintenance release + PI 3.10 latest device pack

See Cisco Prime Infrastructure 3.10 → Downloads.

Amsterdam 17.3.5

2.7

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Amsterdam 17.3.4

2.7

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Amsterdam 17.3.3

2.7

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Amsterdam 17.3.2a

2.7

-

PI 3.8 + PI 3.8 latest maintenance release + PI 3.8 latest device pack

See Cisco Prime Infrastructure 3.8 → Downloads.

Amsterdam 17.3.1

2.7

-

PI 3.8 + PI 3.8 latest maintenance release + PI 3.8 latest device pack

See Cisco Prime Infrastructure 3.8 → Downloads.

Amsterdam 17.2.1

2.7

-

PI 3.7 + PI 3.7 latest maintenance release + PI 3.7 latest device pack

See Cisco Prime Infrastructure 3.7 → Downloads.

Amsterdam 17.1.1

2.7

-

PI 3.6 + PI 3.6 latest maintenance release + PI 3.6 latest device pack

See Cisco Prime Infrastructure 3.6 → Downloads.

Gibraltar 16.12.8

2.6

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Gibraltar 16.12.7

2.6

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Gibraltar 16.12.6

2.6

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Gibraltar 16.12.5b

2.6

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Gibraltar 16.12.5

2.6

-

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Gibraltar 16.12.4

2.6

-

PI 3.8 + PI 3.8 latest maintenance release + PI 3.8 latest device pack

See Cisco Prime Infrastructure 3.8 → Downloads.

Gibraltar 16.12.3a

2.6

-

PI 3.5 + PI 3.5 latest maintenance release + PI 3.5 latest device pack

See Cisco Prime Infrastructure 3.5 → Downloads.

Gibraltar 16.12.3

2.6

-

PI 3.5 + PI 3.5 latest maintenance release + PI 3.5 latest device pack

See Cisco Prime Infrastructure 3.5 → Downloads.

Gibraltar 16.12.2

2.6

-

PI 3.5 + PI 3.5 latest maintenance release + PI 3.5 latest device pack

See Cisco Prime Infrastructure 3.5 → Downloads.

Gibraltar 16.12.1

2.6

-

PI 3.5 + PI 3.5 latest maintenance release + PI 3.5 latest device pack

See Cisco Prime Infrastructure 3.5 → Downloads.

Gibraltar 16.11.1

2.6

2.4 Patch 5

5.4

5.5

PI 3.4 + PI 3.4 latest maintenance release + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4 → Downloads.

Gibraltar 16.10.1

2.3 Patch 1

2.4 Patch 1

5.4

5.5

PI 3.4 + PI 3.4 latest maintenance release + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4→ Downloads.

Fuji 16.9.8

2.5

2.1

5.4

5.5

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Fuji 16.9.7

2.5

2.1

5.4

5.5

PI 3.9 + PI 3.9 latest maintenance release + PI 3.9 latest device pack

See Cisco Prime Infrastructure 3.9 → Downloads.

Fuji 16.9.6

2.3 Patch 1

2.4 Patch 1

5.4

5.5

PI 3.4 + PI 3.4 latest maintenance release + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4→ Downloads.

Fuji 16.9.5

2.3 Patch 1

2.4 Patch 1

5.4

5.5

PI 3.4 + PI 3.4 latest maintenance release + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4→ Downloads.

Fuji 16.9.4

2.3 Patch 1

2.4 Patch 1

5.4

5.5

PI 3.4 + PI 3.4 latest maintenance release + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4→ Downloads.

Fuji 16.9.3

2.3 Patch 1

2.4 Patch 1

5.4

5.5

PI 3.4 + PI 3.4 latest maintenance release + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4→ Downloads.

Fuji 16.9.2

2.3 Patch 1

2.4 Patch 1

5.4

5.5

PI 3.4 + PI 3.4 latest maintenance release + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4→ Downloads.

Fuji 16.9.1

2.3 Patch 1

2.4 Patch 1

5.4

5.5

PI 3.4 + PI 3.4 latest device pack

See Cisco Prime Infrastructure 3.4→ Downloads.

Fuji 16.8.1a

2.3 Patch 1

2.4

5.4

5.5

PI 3.3 + PI 3.3 latest maintenance release + PI 3.3 latest device pack

See Cisco Prime Infrastructure 3.3→ Downloads.

Everest 16.6.4a

2.2

2.3

5.4

5.5

PI 3.1.6 + Device Pack 13

See Cisco Prime Infrastructure 3.1 → Downloads.

Everest 16.6.4

2.2

2.3

5.4

5.5

PI 3.1.6 + Device Pack 13

See Cisco Prime Infrastructure 3.1 → Downloads.

Everest 16.6.3

2.2

2.3

5.4

5.5

PI 3.1.6 + Device Pack 13

See Cisco Prime Infrastructure 3.1 → Downloads

Everest 16.6.2

2.2

2.3

5.4

5.5

PI 3.1.6 + Device Pack 13

See Cisco Prime Infrastructure 3.1 → Downloads

Everest 16.6.1

2.2

5.4

5.5

PI 3.1.6 + Device Pack 13

See Cisco Prime Infrastructure 3.1 → Downloads

Everest 16.5.1a

2.1 Patch 3

5.4

5.5

-

Web UI System Requirements

The following subsections list the hardware and software required to access the Web UI:

Minimum Hardware Requirements

Processor Speed

DRAM

Number of Colors

Resolution

Font Size

233 MHz minimum3

512 MB4

256

1280 x 800 or higher

Small
3 We recommend 1 GHz
4 We recommend 1 GB DRAM

Software Requirements

Operating Systems

  • Windows 10 or later

  • Mac OS X 10.9.5 or later

Browsers

  • Google Chrome—Version 59 or later (On Windows and Mac)

  • Microsoft Edge

  • Mozilla Firefox—Version 54 or later (On Windows and Mac)

  • Safari—Version 10 or later (On Mac)

ROMMON Versions

ROMMON, also known as the boot loader, is firmware that runs when the device is powered up or reset. It initializes the processor hardware and boots the operating system software (Cisco IOS XE software image). The ROMMON is stored on the following Serial Peripheral Interface (SPI) flash devices on your switch:

  • Primary: The ROMMON stored here is the one the system boots every time the device is powered-on or reset.

  • Golden: The ROMMON stored here is a backup copy. If the one in the primary is corrupted, the system automatically boots the ROMMON in the golden SPI flash device.

ROMMON upgrades may be required to resolve firmware defects, or to support new features, but there may not be new versions with every release.

The following table provides ROMMON version information for the Cisco Catalyst 9500 Series Switches. For ROMMON version information of Cisco IOS XE 16.x.x releases, refer to the corresponding Cisco IOS XE 16.x.x release notes of the respective platform.

Release

ROMMON Version (C9500-12Q, C9500-24Q, C9500-16X, C9500-40X)

ROMMON Version (C9500-32C, C9500-32QC, C9500-24Y4C, C9500-48Y4C)

ROMMON Version (C9500X)

Amsterdam 17.3.8a

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.8

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.7

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.6

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.5

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.4

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.3

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.2a

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.3.1

17.3.1r[FC2]

17.3.1r[FC2]

-

Amsterdam 17.2.1

17.2.1r[FC1]

17.1.1[FC2]

-

Amsterdam 17.1.1

17.1.1r [FC1]

17.1.1[FC1]

-

Upgrading the Switch Software

This section covers the various aspects of upgrading or downgrading the device software.


Note
You cannot use the Web UI to install, upgrade, or downgrade device software.

Finding the Software Version

The package files for the Cisco IOS XE software are stored on the system board flash device (flash:).

You can use the show version privileged EXEC command to see the software version that is running on your switch.


Note
Although the show version output always shows the software image running on the switch, the model name shown at the end of this display is the factory configuration and does not change if you upgrade the software license.

You can also use the dir filesystem: privileged EXEC command to see the directory names of other software images that you might have stored in flash memory.

Software Images

Release

Image Type

File Name

Cisco IOS XE Bengaluru 17.4.1

CAT9K_IOSXE

cat9k_iosxe.17.04.01.SPA.bin

No Payload Encryption (NPE)

cat9k_iosxe_npe.17.04.01.SPA.bin

Upgrading the ROMMON

To know the ROMMON or bootloader version that applies to every major and maintenance release, see ROMMON Versions.

You can upgrade the ROMMON before, or, after upgrading the software version. If a new ROMMON version is available for the software version you are upgrading to, proceed as follows:

  • Upgrading the ROMMON in the primary SPI flash device

    On the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models of the series, you must manually upgrade the ROMMON in the primary SPI flash device, if a new version is applicable, and the release you are upgrading from is Cisco IOS XE Gibraltar 16.12.1 or a later release. (So if you upgrade from Cisco IOS XE Gibraltar 16.11.1 for example, a manual upgrade does not apply; the ROMMON is automatically updated, if applicable). Enter the upgrade rom-monitor capsule primary switch command in privileged EXEC mode.

    On the C9500-24Y4C, C9500-32C, C9500-32QC, and C9500-48Y4C models of the series, this ROMMON is upgraded automatically. When you upgrade from an existing release on your switch to a later or newer release for the first time, and there is a new ROMMON version in the new release, the system automatically upgrades the ROMMON in the primary SPI flash device, based on the hardware version of the switch when you boot up your switch with the new image for the first time.

  • Upgrading the ROMMON in the golden SPI flash device

    You must manually upgrade this ROMMON. The manual upgrade applies to all models in the series. Enter the upgrade rom-monitor capsule golden switch command in privileged EXEC mode.


    Note

    • In case of a Cisco StackWise Virtual setup, upgrade the active and standby switch.

After the ROMMON is upgraded, it will take effect on the next reload. If you go back to an older release after this, the ROMMON is not downgraded. The updated ROMMON supports all previous releases.

Software Installation Commands

Summary of Software Installation Commands

Supported starting from Cisco IOS XE Everest 16.6.2 and later releases

To install and activate the specified file, and to commit changes to be persistent across reloads:

install add file filename [ activate commit]

To separately install, activate, commit, cancel, or remove the installation file: install ?

add file tftp: filename

Copies the install file package from a remote location to the device and performs a compatibility check for the platform and image versions.

activate [ auto-abort-timer]

Activates the file, and reloads the device. The auto-abort-timer keyword automatically rolls back image activation.

commit

Makes changes persistent over reloads.

rollback to committed

Rolls back the update to the last committed version.

abort

Cancels file activation, and rolls back to the version that was running before the current installation procedure started.

remove

Deletes all unused and inactive software installation files.

Note
The request platform software commands are deprecated starting from Cisco IOS XE Gibraltar 16.10.1. The commands are visible on the CLI in this release and you can configure them, but we recommend that you use the install commands to upgrade or downgrade.

Summary of request platform software Commands

Note

 
This table of commands is not supported on Cisco Catalyst 9500 Series Switches - High Performance. 
Device# request platform software package ?

clean

Cleans unnecessary package files from media

copy

Copies package to media

describe

Describes package content

expand

Expands all-in-one package to media

install

Installs the package

uninstall

Uninstalls the package

verify

Verifies In Service Software Upgrade (ISSU) software package compatibility

Upgrading in Install Mode

Follow these instructions to upgrade from one release to another, using install commands, in install mode. To perform a software image upgrade, you must be booted into IOS through boot flash:packages.conf .

Before you begin

When upgrading from ...

Use these commands...

To upgrade to...

Cisco IOS XE Everest 16.5.1a or Cisco IOS XE Everest 16.6.1

Only request platform software commands

Cisco IOS XE Bengaluru 17.4.1

Cisco IOS XE Everest 16.6.2 and all later releases

On Cisco Catalyst 9500 Series Switches, either install commands or request platform software commands5.

On Cisco Catalyst 9500 Series Switches - High Performance, only install commands6.

5 The request platform software commands are deprecated. So although they are still visible on the CLI, we recommend that you use install commands.
6 Introduced in Cisco IOS XE Fuji 16.8.1a.

The sample output in this section displays upgrade from Cisco IOS XE Amsterdam 17.3.1 to Cisco IOS XE Bengaluru 17.4.1 using install commands only.

Procedure

Step 1

Clean-up

install remove inactive

Use this command to clean-up old installation files in case of insufficient space and to ensure that you have at least 1GB of space in flash, to expand a new image.

The following sample output displays the cleaning up of unused files, by using the install remove inactive command:
Switch# install remove inactive
install_remove: START Wed Nov 18 19:51:48 UTC 2020
Cleaning up unnecessary package files
Scanning boot directory for packages ... done.
Preparing packages list to delete ...
    cat9k-cc_srdriver.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-espbase.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-guestshell.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-rpbase.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-rpboot.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-sipbase.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-sipspa.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-srdriver.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-webui.17.03.01.SPA.pkg
      File is in use, will not delete.
    cat9k-wlc.17.03.01.SPA.pkg
      File is in use, will not delete.
    packages.conf
      File is in use, will not delete.
  done.
The following files will be deleted:
[R0]:
/flash/cat9k-cc_srdriver.17.03.01.SPA.pkg
/flash/cat9k-espbase.17.03.01.SPA.pkg
/flash/cat9k-guestshell.17.03.01.SPA.pkg
/flash/cat9k-rpbase.17.03.01.SPA.pkg
/flash/cat9k-rpboot.17.03.01.SPA.pkg
/flash/cat9k-sipbase.17.03.01.SPA.pkg
/flash/cat9k-sipspa.17.03.01.SPA.pkg
/flash/cat9k-srdriver.17.03.01.SPA.pkg
/flash/cat9k-webui.17.03.01.SPA.pkg
/flash/cat9k-wlc.17.03.01.SPA.pkg
/flash/packages.conf
 
Do you want to remove the above files? [y/n]y
[R0]:
Deleting file flash:cat9k-cc_srdriver.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-espbase.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-guestshell.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-rpbase.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-rpboot.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-sipbase.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-sipspa.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-srdriver.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-webui.17.03.01.SPA.pkg ... done.
Deleting file flash:cat9k-wlc.17.03.01.SPA.pkg ... done.
Deleting file flash:packages.conf ... done.
SUCCESS: Files deleted.
--- Starting Post_Remove_Cleanup ---
Performing Post_Remove_Cleanup on all members
[1] Post_Remove_Cleanup package(s) on switch 1
[1] Finished Post_Remove_Cleanup on switch 1
Checking status of Post_Remove_Cleanup on [1]
Post_Remove_Cleanup: Passed on [1]
Finished Post_Remove_Cleanup
 
SUCCESS: install_remove Wed Nov 18 19:52:25 UTC 2020
Switch#

Step 2

Copy new image to flash

  1. copy tftp:[[//location]/directory]/filenameflash:

    Use this command to copy the new image from a TFTP server to flash memory. The location is either an IP address or a host name. The filename is specified relative to the directory used for file transfers. Skip this step if you want to use the new image from a TFTP server.
    Switch# copy tftp://10.8.0.6/image/cat9k_iosxe.17.04.01.SPA.bin flash:
destination filename [cat9k_iosxe.17.04.01.SPA.bin]?
Accessing tftp://10.8.0.6/image/cat9k_iosxe.17.04.01.SPA.bin...
Loading /cat9k_iosxe.17.04.01.SPA.bin from 10.8.0.6 (via GigabitEthernet0/0): 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 601216545 bytes]
 
601216545 bytes copied in 50.649 secs (11870255 bytes/sec)

  2. dir flash:

    Use this command to confirm that the image has been successfully copied to flash. 
    Switch# dir flash:*.bin
Directory of flash:/*.bin
 
Directory of flash:/
 
434184 -rw- 601216545    Nov 18 2020 10:18:11 -07:00 cat9k_iosxe.17.04.01.SPA.bin
11353194496 bytes total (8976625664 bytes free)

Step 3

Set boot variable

  1. boot system flash:packages.conf

    Use this command to set the boot variable to flash:packages.conf .
    Switch(config)# boot system flash:packages.conf

  2. no boot manual

    Use this command to configure the switch to auto-boot. Settings are synchronized with the standby switch, if applicable.
    Switch(config)# no boot manual
Switch(config)# exit

  3. write memory

    Use this command to save boot settings.
    Switch# write memory

  4. show bootvar or show boot

    Use this command to verify the boot variable (packages.conf) and manual boot setting (no):
    Switch# show bootvar               <<on the C9500-24Y4C,C9500-32C, C9500-32QC, and C9500-48Y4C models
BOOT variable = bootflash:packages.conf
MANUAL_BOOT variable = no
BAUD variable = 9600
ENABLE_BREAK variable = yes
BOOTMODE variable does not exist
IPXE_TIMEOUT variable does not exist
CONFIG_FILE variable = 

Standby BOOT variable = bootflash:packages.conf
Standby MANUAL_BOOT variable = no
Standby BAUD variable = 9600
Standby ENABLE_BREAK variable = yes
Standby BOOTMODE variable does not exist
Standby IPXE_TIMEOUT variable does not exist
Standby CONFIG_FILE variable = 
    Switch# show boot                        <<on the C9500-12Q,C9500-16X C9500-24Q, and C9500-40X models
Current Boot Variables:
BOOT variable = flash:packages.conf;

Boot Variables on next reload:
BOOT variable = flash:packages.conf;
Manual Boot = no
Enable Break = yes
Boot Mode = DEVICE
iPXE Timeout = 0

Step 4

Install image to flash

install add file activate commit

Use this command to install the image.

We recommend that you point to the source image on your TFTP server or the flash drive of the active switch, if you have copied the image to flash memory. If you point to an image on the flash or USB drive of a member switch (instead of the active), you must specify the exact flash or USB drive - otherwise installation fails. For example, if the image is on the flash drive of member switch 3 (flash-3): Switch# install add file flash-3:cat9k_iosxe.17.04.01.SPA.bin activate commit.

The following sample output displays installation of the Cisco IOS XE Bengaluru 17.4.1 software image in the flash memory: 
Switch# install add file flash:cat9k_iosxe.17.04.01.SPA.bin activate commit
install_add_activate_commit: Adding PACKAGE
install_add_activate_commit: Checking whether new add is allowed ....
--- Starting Add ---
Performing Add on Active/Standby
 [1] Add package(s) on R0
 [1] Finished Add on R0

Checking status of Add on [R0]
Add: Passed on [R0]
Finished Add

Image added. Version: 17.4.01

install_add_activate_commit: Activating PACKAGE
Following packages shall be activated:
/flash/cat9k-wlc.17.04.01.SPA.pkg
/flash/cat9k-webui.17.04.01.SPA.pkg
/flash/cat9k-srdriver.17.04.01.SPA.pkg
/flash/cat9k-sipspa.17.04.01.SPA.pkg
/flash/cat9k-sipbase.17.04.01.SPA.pkg
/flash/cat9k-rpboot.17.04.01.SPA.pkg
/flash/cat9k-rpbase.17.04.01.SPA.pkg
/flash/cat9k-guestshell.17.04.01.SPA.pkg
/flash/cat9k-espbase.17.04.01.SPA.pkg
/flash/cat9k-cc_srdriver.17.04.01.SPA.pkg

This operation may require a reload of the system. Do you want to proceed? [y/n] y

--- Starting Activate ---

Performing Activate on Active/Standby
[1] Activate package(s) on R0
    --- Starting list of software package changes ---
    Old files list:
      Removed cat9k-cc_srdriver.17.03.01.SPA.pkg
      Removed cat9k-espbase.17.03.01.SPA.pkg
      Removed cat9k-guestshell.17.03.01.SPA.pkg
      Removed cat9k-rpbase.17.03.01.SPA.pkg
      Removed cat9k-rpboot.17.03.01.SPA.pkg
      Removed cat9k-sipbase.17.03.01.SPA.pkg
      Removed cat9k-sipspa.17.03.01.SPA.pkg
      Removed cat9k-srdriver.17.03.01.SPA.pkg
      Removed cat9k-webui.17.03.01.SPA.pkg
      Removed cat9k-wlc.17.03.01.SPA.pkg
    New files list:
      Added cat9k-cc_srdriver.17.04.01.SSA.pkg
      Added cat9k-espbase.17.04.01.SSA.pkg
      Added cat9k-guestshell.17.04.01.SSA.pkg
      Added cat9k-lni.17.04.01.SSA.pkg
      Added cat9k-rpbase.17.04.01.SSA.pkg
      Added cat9k-rpboot.17.04.01.SSA.pkg
      Added cat9k-sipbase.17.04.01.SSA.pkg
      Added cat9k-sipspa.17.04.01.SSA.pkg
      Added cat9k-srdriver.17.04.01.SSA.pkg
      Added cat9k-webui.17.04.01.SSA.pkg
      Added cat9k-wlc.17.04.01.SSA.pkg
    Finished list of software package changes
  [1] Finished Activate on R0
Checking status of Activate on [R0]
Activate: Passed on [R0]
Finished Activate

--- Starting Commit ---
Performing Commit on Active/Standby
  [1] Commit package(s) on R0
  [1] Finished Commit on R0
Checking status of Commit on [R0]
Commit: Passed on [R0]
Finished Commit
Send model notification for install_add_activate_commit before reload
Install will reload the system now!
SUCCESS: install_add_activate_commit  Wed Nov 18 12:13:05 IST 2020

Switch#Nov 18 12:13:11.023: %PMANTACTION: F0/0vp: Process manager is exiting: n requested
Nov 18 12:13:11.028: %PMAN-5-EXITACTION: C1/0: pvp: Process manager is exiting: reload fru action requested
Nov 18 12:13:11.825: %PMAN-5-EXITACTION: R0/0: pvp: Process manager is exiting: reload action requested

Initializing Hardware...
System Bootstrap, Version 17.4.1r[FC2], RELEASE SOFTWARE (P)

Compiled 30-04-2020 12:00:00.00 by rel
Current ROMMON image : Primary Rommon Image
Last reset cause:LocalSoft
C9500-32QC platform with 16777216 Kbytes of main memory
Preparing to autoboot. [Press Ctrl-C to interrupt]  5     5     /-\|/-\|/-4     \|/-\|/-\|3     /-\|/-\|/-2     \|/-\|/-\|1     /-\|/-\|/-0     

boot: attempting to boot from [bootflash:packages.conf]

boot: reading file packages.conf
<output truncated>

Note

 
The system reloads automatically after executing the install add file activate commit command. You do not have to manually reload the system.

Step 5

Verify installation

After the software has been successfully installed, use the dir flash: command to verify that the flash partition has ten new .pkg files and two .conf files.

  1. dir flash:*.pkg

    The following is sample output of the dir flash:*.pkg command: 
    Switch# dir flash:*.pkg
 
Directory of flash:/
475140 -rw- 2012104   Jul 15 2019 09:52:41 -07:00 cat9k-cc_srdriver.17.03.01.SPA.pkg
475141 -rw- 70333380  Jul 15 2019 09:52:44 -07:00 cat9k-espbase.17.03.01.SPA.pkg
475142 -rw- 13256     Jul 15 2019 09:52:44 -07:00 cat9k-guestshell.17.03.01.SPA.pkg
475143 -rw- 349635524 Jul 15 2019 09:52:54 -07:00 cat9k-rpbase.17.03.01.SPA.pkg
475149 -rw- 24248187  Jul 15 2019 09:53:02 -07:00 cat9k-rpboot.17.03.01.SPA.pkg
475144 -rw- 25285572  Jul 15 2019 09:52:55 -07:00 cat9k-sipbase.17.03.01.SPA.pkg
475145 -rw- 20947908  Jul 15 2019 09:52:55 -07:00 cat9k-sipspa.17.03.01.SPA.pkg
475146 -rw- 2962372   Jul 15 2019 09:52:56 -07:00 cat9k-srdriver.17.03.01.SPA.pkg
475147 -rw- 13284288  Jul 15 2019 09:52:56 -07:00 cat9k-webui.17.03.01.SPA.pkg
475148 -rw- 13248     Jul 15 2019 09:52:56 -07:00 cat9k-wlc.17.03.01.SPA.pkg

491524 -rw- 25711568  Nov 18 2020 11:49:33 -07:00 cat9k-cc_srdriver.17.04.01.SPA.pkg
491525 -rw- 78484428  Nov 18 2020 11:49:35 -07:00 cat9k-espbase.17.04.01.SPA.pkg
491526 -rw- 1598412   Nov 18 2020 11:49:35 -07:00 cat9k-guestshell.17.04.01.SPA.pkg
491527 -rw- 404153288 Nov 18 2020 11:49:47 -07:00 cat9k-rpbase.17.04.01.SPA.pkg
491533 -rw- 31657374  Nov 18 2020 11:50:09 -07:00 cat9k-rpboot.17.04.01.SPA.pkg
491528 -rw- 27681740  Nov 18 2020 11:49:48 -07:00 cat9k-sipbase.17.04.01.SPA.pkg
491529 -rw- 52224968  Nov 18 2020 11:49:49 -07:00 cat9k-sipspa.17.04.01.SPA.pkg
491530 -rw- 31130572  Nov 18 2020 11:49:50 -07:00 cat9k-srdriver.17.04.01.SPA.pkg
491531 -rw- 14783432  Nov 18 2020 11:49:51 -07:00 cat9k-webui.17.04.01.SPA.pkg
491532 -rw- 9160      Nov 18 2020 11:49:51 -07:00 cat9k-wlc.17.04.01.SPA.pkg
11353194496 bytes total (9544245248 bytes free)
Switch#

  2. dir flash:*.conf

    The following is sample output of the dir flash:*.conf command. It displays the .conf files in the flash partition; note the two .conf files:

    • packages.conf—the file that has been re-written with the newly installed .pkg files

    • cat9k_iosxe.17.04.01.SPA.conf— a backup copy of the newly installed packages.conf file 

    Switch# dir flash:*.conf
 
Directory of flash:/*.conf
Directory of flash:/

434197 -rw- 7406 Nov 18 2020 10:59:16 -07:00 packages.conf
516098 -rw- 7406 Nov 18 2020 10:58:08 -07:00 cat9k_iosxe.17.04.01.SPA.conf
11353194496 bytes total (8963174400 bytes free)

Step 6

Upgrade the ROMMON version

A new ROMMON version is available for Cisco IOS XE Bengaluru 17.4.1, for all models in the series. Use the applicable commands to upgrade the ROMMON version. After you enter the command, confirm upgrade at the system prompt.

In case of a Cisco StackWise Virtual setup, remember to upgrade the active and standby

  • Enter the upgrade rom-monitor capsule golden switch command for all models in the series.
  • Also enter the upgrade rom-monitor capsule primary switch command, only for the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models in the series. 
Switch# upgrade rom-monitor capsule golden switch active R0 
This operation will reload the switch and take a few minutes to complete. Do you want to proceed (y/n)? [confirm]y
Switch#
Initializing Hardware...
<output truncated>

For more information about this, see Upgrading the ROMMON in this document.

Step 7

Reload and verify version

  1. reload

    Use this command to reload the switch. When the switch reloads after a ROMMON upgrade, the ROMMON version is updated, but not displayed in the output until the next reload. 
    Switch# reload

  2. show version

    After the image boots up, use this command to verify the version of the new image.

    The following sample output of the show version command displays the Cisco IOS XE Bengaluru 17.4.1 image on the device:
    Switch# show version
Cisco IOS XE Software, Version 17.04.01
Cisco IOS Software [Bengaluru], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 17.4.1, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2020 by Cisco Systems, Inc.
<output truncated>

Downgrading in Install Mode

Follow these instructions to downgrade from one release to another, in install mode.

Before you begin

Note that you can use this procedure for the following downgrade scenarios:

When downgrading from ...

Use these commands...

To downgrade to...

Cisco IOS XE Bengaluru 17.4.x

  • On Cisco Catalyst 9500 Series Switches, either install commands or request platform software commands7.

  • On Cisco Catalyst 9500 Series Switches - High Performance, only install commands

Cisco IOS XE Amsterdam 17.3.x or earlier releases.

7 The request platform software commands are deprecated. So although they are still visible on the CLI, we recommend that you use install commands.

Note
New switch models that are introduced in a release cannot be downgraded. The release in which a switch model is introduced is the minimum software version for that model.

The sample output in this section shows downgrade from Cisco IOS XE Bengaluru 17.4.1 to Cisco IOS XE Amsterdam 17.3.1, using install commands.

Procedure

Step 1

Clean-up

install remove inactive

Use this command to clean-up old installation files in case of insufficient space and to ensure that you have at least 1GB of space in flash, to expand a new image.

The following sample output displays the cleaning up of unused files, by using the install remove inactive command:
Switch# install remove inactive
 install_remove: START Wed Nov 18 11:42:27 IST 2020

Cleaning up unnecessary package files

No path specified, will use booted path bootflash:packages.conf

Cleaning bootflash:
  Scanning boot directory for packages ... done.
  Preparing packages list to delete ... 
    cat9k-cc_srdriver.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-espbase.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-guestshell.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-rpbase.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-rpboot.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-sipbase.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-sipspa.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-srdriver.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-webui.17.04.01.SSA.pkg
      File is in use, will not delete.
    cat9k-wlc.17.04.01.SSA.pkg
      File is in use, will not delete.
    packages.conf
      File is in use, will not delete.
  done.
SUCCESS: No extra package or provisioning files found on media. Nothing to clean.

SUCCESS: install_remove  Wed Nov 18 11:42:39 IST 2020

Step 2

Copy new image to flash

  1. copy tftp:[[//location]/directory]/filenameflash:

    Use this command to copy the new image from a TFTP server to flash memory. The location is either an IP address or a host name. The filename is specified relative to the directory used for file transfers. Skip this step if you want to use the new image from a TFTP server.
    Switch# copy tftp://10.8.0.6/image/cat9k_iosxe.17.03.01.SPA.bin flash:
Destination filename [cat9k_iosxe.17.03.01.SPA.bin]?
Accessing tftp://10.8.0.6//cat9k_iosxe.17.03.01.SPA.bin...
Loading /cat9k_iosxe.17.03.01.SPA.bin from 10.8.0.6 (via GigabitEthernet0/0): 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 508584771 bytes]
508584771 bytes copied in 101.005 secs (5035244 bytes/sec)

  2. dir flash:

    Use this command to confirm that the image has been successfully copied to flash. 
    Switch# dir flash:*.bin
Directory of flash:/*.bin
 
Directory of flash:/
 
434184 -rw- 508584771 Nov 18 2020 13:35:16 -07:00 cat9k_iosxe.17.03.01.SPA.bin
11353194496 bytes total (9055866880 bytes free)

Step 3

Set boot variable

  1. boot system flash:packages.conf

    Use this command to set the boot variable to flash:packages.conf .
    Switch(config)# boot system flash:packages.conf

  2. no boot manual

    Use this command to configure the switch to auto-boot. Settings are synchronized with the standby switch, if applicable.
    Switch(config)# no boot manual
Switch(config)# exit

  3. write memory

    Use this command to save boot settings.
    Switch# write memory

  4. show bootvar or show boot

    Use this command to verify the boot variable (packages.conf) and manual boot setting (no):
    Switch# show bootvar               <<on the C9500-24Y4C,C9500-32C, C9500-32QC, and C9500-48Y4C models
BOOT variable = bootflash:packages.conf
MANUAL_BOOT variable = no
BAUD variable = 9600
ENABLE_BREAK variable = yes
BOOTMODE variable does not exist
IPXE_TIMEOUT variable does not exist
CONFIG_FILE variable = 

Standby BOOT variable = bootflash:packages.conf
Standby MANUAL_BOOT variable = no
Standby BAUD variable = 9600
Standby ENABLE_BREAK variable = yes
Standby BOOTMODE variable does not exist
Standby IPXE_TIMEOUT variable does not exist
Standby CONFIG_FILE variable = 
    Switch# show boot                        <<on the C9500-12Q,C9500-16X C9500-24Q, and C9500-40X models
Current Boot Variables:
BOOT variable = flash:packages.conf;

Boot Variables on next reload:
BOOT variable = flash:packages.conf;
Manual Boot = no
Enable Break = yes
Boot Mode = DEVICE
iPXE Timeout = 0

Step 4

Downgrade software image

install add file activate commit

Use this command to install the image.

We recommend that you point to the source image on your TFTP server or the flash drive of the active switch, if you have copied the image to flash memory. If you point to an image on the flash or USB drive of a member switch (instead of the active), you must specify the exact flash or USB drive - otherwise installation fails. For example, if the image is on the flash drive of member switch 3 (flash-3): Switch# install add file flash-3:cat9k_iosxe.17.03.01.SPA.bin activate commit.

The following example displays the installation of the Cisco IOS XE Amsterdam 17.3.1 software image to flash, by using the install add file activate commit command. 
Switch# install add file flash:cat9k_iosxe.17.03.01.SPA.bin activate commit
install_add_activate_commit: Adding PACKAGE
install_add_activate_commit: Checking whether new add is allowed ....
--- Starting Add ---
Performing Add on Active/Standby
[1] Add package(s) on R0
[1] Finished Add on R0
Checking status of Add on [R0]
Add: Passed on [R0]
Finished Add
Image added. Version: 17.03.01.0.269
install_add_activate_commit: Activating PACKAGE

Following packages shall be activated:
/flash/cat9k-wlc.17.03.01.SPA.pkg
/flash/cat9k-webui.17.03.01.SPA.pkg
/flash/cat9k-srdriver.17.03.01.SPA.pkg
/flash/cat9k-sipspa.17.03.01.SPA.pkg
/flash/cat9k-sipbase.17.03.01.SPA.pkg
/flash/cat9k-rpboot.17.03.01.SPA.pkg
/flash/cat9k-rpbase.17.03.01.SPA.pkg
/flash/cat9k-guestshell.17.03.01.SPA.pkg
/flash/cat9k-espbase.17.03.01.SPA.pkg
/flash/cat9k-cc_srdriver.17.03.01.SPA.pkg

This operation may require a reload of the system. Do you want to proceed? [y/n] y


Performing Activate on Active/Standby
1] Activate package(s) on R0
    --- Starting list of software package changes ---
    Old files list:
      Removed cat9k-cc_srdriver.17.04.01.SSA.pkg
      Removed cat9k-espbase.17.04.01.SSA.pkg
      Removed cat9k-guestshell.17.04.01.SSA.pkg
      Removed cat9k-lni.17.04.01.SSA.pkg
      Removed cat9k-rpbase.17.04.01.SSA.pkg
      Removed cat9k-rpboot.17.04.01.SSA.pkg
      Removed cat9k-sipbase.17.04.01.SSA.pkg
      Removed cat9k-sipspa.17.04.01.SSA.pkg
      Removed cat9k-srdriver.17.04.01.SSA.pkg
      Removed cat9k-webui.17.04.01.SSA.pkg
      Removed cat9k-wlc.17.04.01.SSA.pkg
    New files list:
      Added cat9k-cc_srdriver.17.03.01.SPA.pkg
      Added cat9k-espbase.17.03.01.SPA.pkg
      Added cat9k-guestshell.17.03.01.SPA.pkg
      Added cat9k-rpbase.17.03.01.SPA.pkg
      Added cat9k-rpboot.17.03.01.SPA.pkg
      Added cat9k-sipbase.17.03.01.SPA.pkg
      Added cat9k-sipspa.17.03.01.SPA.pkg
      Added cat9k-srdriver.17.03.01.SPA.pkg
      Added cat9k-webui.17.03.01.SPA.pkg
      Added cat9k-wlc.17.03.01.SPA.pkg
    Finished list of software package changes
  [1] Finished Activate on R0
Checking status of Activate on [R0]
Activate: Passed on [R0]
Finished Activate

--- Starting Commit ---
Performing Commit on Active/Standby
 [1] Commit package(s) on R0
 [1] Finished Commit on R0
Checking status of Commit on [R0]
Commit: Passed on [R0]
Finished Commit

Send model notification for install_add_activate_commit before reload
Install will reload the system now!
SUCCESS: install_add_activate_commit  Wed Nov 18 11:51:01 IST 2020

Nov 18 11:51:07.505: %PMANTvp: Process manager is exiting: ren requested
Nov 18 11:51:07.505: %PMAN-5-EXITACTION: F0/0: pvp: Process manager is exiting: reload fru action requested
Nov 18 11:51:07.834: %PMAN-5-EXITACTION: R0/0: pvp: Process manager is exiting: reload action requested

Initializing Hardware...

System Bootstrap, Version 17.3.1r[FC2], RELEASE SOFTWARE (P)
Compiled 30-04-2020 12:00:00.00 by rel
Current ROMMON image : Primary Rommon Image

Last reset cause:LocalSoft
C9500-32QC platform with 16777216 Kbytes of main memory
Preparing to autoboot. [Press Ctrl-C to interrupt]  5     5     /-\|/-\|/-4     \|/-\|/-\|3     /-\|/-\|/-2     \|/-\|/-\|1     /-\|/-\|/-0     
boot: attempting to boot from [bootflash:packages.conf]
boot: reading file packages.conf

<output truncated>

Note

 
The system reloads automatically after executing the install add file activate commit command. You do not have to manually reload the system.

Step 5

Verify version

show version

After the image boots up, use this command to verify the version of the new image.

Note

 
When you downgrade the software image, the ROMMON version does not downgrade. It remains updated.
The following sample output of the show version command displays the Cisco IOS XE Amsterdam 17.3.1 image on the device:
Switch# show version
Cisco IOS XE Software, Version 17.03.01
Cisco IOS Software [Amsterdam], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 17.3.1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2020 by Cisco Systems, Inc.
<output truncated>

Field-Programmable Gate Array Version Upgrade

A field-programmable gate array (FPGA) is a type of programmable memory device that exists on Cisco switches. They are re-configurable logic circuits that enable the creation of specific and dedicated functions.

There is no FPGA upgrade in Cisco IOS XE Bengaluru 17.4.1. To check the current FPGA version, enter the version -v command in ROMMON mode.


Note

  • Not every software release has a change in the FPGA version.

  • The version change occurs as part of the regular software upgrade and you do not have to perform any other additional steps.

Licensing

This section provides information about the licensing packages for features available on Cisco Catalyst 9000 Series Switches.

License Levels

The software features available on Cisco Catalyst 9500 Series Switches and Cisco Catalyst 9500 Series Switches - High Performance fall under these base or add-on license levels.

Base Licenses

  • Network Essentials

  • Network Advantage—Includes features available with the Network Essentials license and more.

Add-On Licenses

Add-On Licenses require a Network Essentials or Network Advantage as a pre-requisite. The features available with add-on license levels provide Cisco innovations on the switch, as well as on the Cisco Digital Network Architecture Center (Cisco DNA Center).

  • DNA Essentials

  • DNA Advantage— Includes features available with the DNA Essentials license and more.

To find information about platform support and to know which license levels a feature is available with, use Cisco Feature Navigator. To access Cisco Feature Navigator, go to https://cfnng.cisco.com. An account on cisco.com is not required.

Available Licensing Models and Configuration Information

  • Cisco IOS XE Fuji 16.8.x and earlier: RTU Licensing is the default and the only supported method to manage licenses.

  • Cisco IOS XE Fuji 16.9.1 to Cisco IOS XE Amsterdam 17.3.1: Smart Licensing is the default and the only supported method to manage licenses.


    Note

    On the Cisco Catalyst 9500 Series Switches-High Performance, it is from Cisco IOS XE Fuji 16.8.1a to Cisco IOS XE Amsterdam 17.3.1.

    In the software configuration guide of the required release, see System Management → Configuring Smart Licensing.

  • Cisco IOS XE Amsterdam 17.3.2a and later: Smart Licensing Using Policy, which is an enhanced version of Smart Licensing, is the default and the only supported method to manage licenses.

    In the software configuration guide of the required release (17.3.x onwards), see System Management → Smart Licensing Using Policy.

For a more detailed overview on Cisco Licensing, go to cisco.com/go/licensingguide.

License Levels - Usage Guidelines

  • The duration or term for which a purchased license is valid:

    Smart Licensing Using Policy

    Smart Licensing

    • Perpetual: There is no expiration date for such a license.

    • Subscription: The license is valid only until a certain date (for a three, five, or seven year period).

    • Permanent: for a license level, and without an expiration date.

    • Term: for a license level, and for a three, five, or seven year period.

    • Evaluation: a license that is not registered.

  • Base licenses (Network Essentials and Network-Advantage) are ordered and fulfilled only with a perpetual or permanent license type.

  • Add-on licenses (DNA Essentials and DNA Advantage) are ordered and fulfilled only with a subscription or term license type.

  • An add-on license level is included when you choose a network license level. If you use DNA features, renew the license before term expiry, to continue using it, or deactivate the add-on license and then reload the switch to continue operating with the base license capabilities.

  • When ordering an add-on license with a base license, note the combinations that are permitted and those that are not permitted:

    Table 5. Permitted Combinations

    DNA Essentials

    DNA Advantage

    Network Essentials

    Yes

    No

    Network Advantage

    Yes8

    Yes
    8 You will be able to purchase this combination only at the time of the DNA license renewal and not when you purchase DNA-Essentials the first time.

  • Evaluation licenses cannot be ordered. They are not tracked via Cisco Smart Software Manager and expire after a 90-day period. Evaluation licenses can be used only once on the switch and cannot be regenerated. Warning system messages about an evaluation license expiry are generated only 275 days after expiration and every week thereafter. An expired evaluation license cannot be reactivated after reload. This applies only to Smart Licensing. The notion of evaluation licenses does not apply to Smart Licensing Using Policy.

Limitations and Restrictions

With Cisco Catalyst 9500 Series Switches and Cisco Catalyst 9500 Series Switches - High Performance—If a feature is not supported on a switch model, you do not have to factor in any limitations or restrictions that may be listed here. If limitations or restrictions are listed for a feature that is supported, check if model numbers are specified, to know if they apply. If model numbers are not specified, the limitations or restrictions apply to all models in the series.

  • Auto negotiation

    Auto negotiation (the speed auto command) and half duplex (the duplex half command) are not supported on GLC-T or GLC-TE transceivers for 10 Mbps and 100 Mbps speeds. This applies only to the C9500-48Y4C and C9500-24Y4C models of the series.

    We recommend not changing Forward Error Correction (FEC) when auto negotiation is ON. This is applicable to 100G/40G/25G CU cables on the C9500-32C, C9500-32QC, C9500-24Y4C and C9500-48Y4C models of the series.

  • Control Plane Policing (CoPP)—The show run command does not display information about classes configured under system-cpp policy, when they are left at default values. Use the show policy-map system-cpp-policy or the show policy-map control-plane commands in privileged EXEC mode instead.

  • Cisco StackWise Virtual

    • On Cisco Catalyst 9500 Series Switches, when Cisco StackWise Virtual is configured, breakout ports using 4X10G breakout cables, or the Cisco QSFP to SFP or SFP+ Adapter (QSA) module can only be used as data ports; they cannot be used to configure StackWise Virtual links (SVLs) or dual-active detective (DAD) links.

    • On Cisco Catalyst 9500 Series Switches - High Performance,

      • When Cisco StackWise Virtual is configured, breakout ports using 4X25G or 4X10G breakout cables can only be used as data ports; they cannot be used to configure SVLs or DAD links.

      • When Cisco StackWise Virtual is configured, Cisco QSA module with 10G SFP modules can be used as data ports and to configure SVLs or DAD links.

      • When Cisco StackWise Virtual is configured, Cisco QSA module with 1G SFP modules can be used as data ports and to configure DAD links; they cannot be used to configure SVLs since SVLs are not supported on 1G interfaces.

  • Cisco TrustSec restrictions—Cisco TrustSec can be configured only on physical interfaces, not on logical interfaces.

  • Flexible NetFlow limitations

    • You cannot configure NetFlow export using the Ethernet Management port (GigabitEthernet0/0).

    • You can not configure a flow monitor on logical interfaces, such as layer 2 port-channels, loopback, tunnels.

    • You can not configure multiple flow monitors of same type (ipv4, ipv6 or datalink) on the same interface for same direction.

  • Hardware Limitations — Optics:

    • 1G with Cisco QSA Module (CVR-QSFP-SFP10G) is not supported on the uplink ports of the C9500-24Y4C and C9500-48Y4C models.

    • Installation restriction for SFP-10G-T-X module on C9500-24Y4C and C9500-48Y4C— Only eight SFP-10G-T-X modules are supported at a time. If you insert a ninth SFP-10G-T-X module in a lower numbered port than the existing active eight SFP-10G-T-X module, a reload will bring up the ninth transceiver and moves the last existing port with SFP-10G-T-X module to error disabled state. This happens due to the order of sequence ports link bring up where the lower numbered port brings up the link first. This limitation applies in standalone and in Cisco StackWise Virtual setup with two C9500-24Y4C or C9500-48Y4C switches. Each switch can have eight SFP-10G-T-X modules.

      The following error displays on the console if you insert a ninth module with eight active modules: 

      “%IOMD_ETHER_GEIM-4-MAX_LIMIT_XCVR: R0/0: iomd: Number of SFP-10G-T-X that can be supported has reached the max limit of 8, transceiver is err-disabled. Unplug the transceiver in interface TwentyFiveGigE1/0/29

    • SFP-10G-T-X supports 100Mbps/1G/10G speeds based on auto negotiation with the peer device. You cannot force speed settings from the transceiver.

    • SFP-10G-LRM on C9500-24Y4C and C9500-48Y4C supports only up to 150 meters distance with OM1 and OM2 fibers.

  • Hardware limitations:

    • Use the MODE button to switch-off the beacon LED.

    • All port LED behavior is undefined until interfaces are fully initialized.

    • The following limitations apply to Cisco QSA Module (CVR-QSFP-SFP10G) when Cisco 1000Base-T Copper SFP (GLC-T) or Cisco 1G Fiber SFP Module for Multimode Fiber are plugged into the QSA module:

      • 1G Fiber modules over QSA do not support autonegotiation. Auto-negotiation should be disabled on the far-end devices.

      • Although visible in the CLI, the command [no] speed nonegotiate is not supported with 1G Fiber modules over QSA.

      • Only GLC-T over QSA supports auto-negotiation.

      • GLC-T supports only port speed of 1000 Mb/s over QSA. Port speeds of 10/100-Mb/s are not supported due to hardware limitation.

    • When you use Cisco QSFP-4SFP10G-CUxM Direct-Attach Copper Cables, autonegotiation is enabled by default. If the other end of the line does not support autonegotation, the link does not come up.

    • Autonegotiation is not supported on HundredGigabitEthernet1/0/49 to HundredGigabitEthernet1/0/52 uplink ports of the C9500-48Y4C models, and HundredGigabitEthernet1/0/25 to HundredGigabitEthernet1/0/28 uplink ports of the C9500-24Y4C models. Disable autonegotiation on the peer device if you are using QSFP-H40G-CUxx and QSFP-H40G-ACUxx cables.

    • For QSFP-H100G-CUxx cables, the C9500-48Y4C and C9500-24Y4C models support the cables only if both sides of the connection are either C9500-48Y4C or C9500-24Y4C.

    • For C9500-32C model, the power supply with serial number starting with POG has two fans and the power supply with serial number starting with QCS has a single fan. When you use show environment status command, the fan status of one fan is always displayed as N/A when the power supply with single fan is installed into the power supply slot. See Configuring Internal Power Supplies.

  • Interoperability limitations—When you use Cisco QSFP-4SFP10G-CUxM Direct-Attach Copper Cables, if one end of the 40G link is a Catalyst 9400 Series Switch and the other end is a Catalyst 9500 Series Switch, the link does not come up, or comes up on one side and stays down on the other. To avoid this interoperability issue between devices, apply the the speed nonegotiate command on the Catalyst 9500 Series Switch interface. This command disables autonegotiation and brings the link up. To restore autonegotiation, use the no speed nonegotiation command.

  • In-Service Software Upgrade (ISSU)

    • In-Service Software Upgrade (ISSU)—On Cisco Catalyst 9500 Series Switches (C9500-12Q, C9500-16X, C9500-24Q, C9500-40X), ISSU from Cisco IOS XE Fuji 16.9.x to Cisco IOS XE Gibraltar 16.10.x or to Cisco IOS XE Gibraltar 16.11.x is not supported.

    • On Cisco Catalyst 9500 Series Switches - High Performance (C9500-24Y4C, C9500-32C, C9500-32QC, and C9500-48Y4C), ISSU with Cisco StackWise Virtual is supported only starting from Cisco IOS XE Gibraltar 16.12.1. Therefore, ISSU upgrades can be performed only starting from this release to a later release.

    • While ISSU allows you to perform upgrades with zero downtime, we recommend you to do so during a maintenance window only.

    • If a new feature introduced in a software release requires a change in configuration, the feature should not be enabled during ISSU.

    • If a feature is not available in the downgraded version of a software image, the feature should be disabled before initiating ISSU.

  • HTTP Services limitations—If you configure ip http active-session-modules none and ip http secure-active-session-modules none commands, NGINX process will be held down. This will prevent HTTP or HTTPS from running. Use ip http session-module-list the command to enable the required HTTP modules.

  • QoS restrictions

    • When configuring QoS queuing policy, the sum of the queuing buffer should not exceed 100%.

    • For QoS policies, only switched virtual interfaces (SVI) are supported for logical interfaces.

    • QoS policies are not supported for port-channel interfaces, tunnel interfaces, and other logical interfaces.

  • Secure Shell (SSH)

    • Use SSH Version 2. SSH Version 1 is not supported.

    • When the device is running SCP and SSH cryptographic operations, expect high CPU until the SCP read process is completed. SCP supports file transfers between hosts on a network and uses SSH for the transfer.

      Since SCP and SSH operations are currently not supported on the hardware crypto engine, running encryption and decryption process in software causes high CPU. The SCP and SSH processes can show as much as 40 or 50 percent CPU usage, but they do not cause the device to shutdown.

  • Smart Licensing Using Policy: Starting with Cisco IOS XE Amsterdam 17.3.2a, with the introduction of Smart Licensing Using Policy, even if you configure a hostname for a product instance or device, only the Unique Device Identifier (UDI) is displayed. This change in the display can be observed in all licensing utilities and user interfaces where the hostname was displayed in earlier releases. It does not affect any licensing functionality. There is no workaround for this limitation.

    The licensing utilities and user interfaces that are affected by this limitation include only the following: Cisco Smart Software Manager (CSSM), Cisco Smart License Utility (CSLU), and Smart Software Manager On-Prem (SSM On-Prem).

  • TACACS legacy command: Do not configure the legacy tacacs-server host command; this command is deprecated. If the software version running on your device is Cisco IOS XE Gibraltar 16.12.2 or a later release, using the legacy command can cause authentication failures. Use the tacacs server command in global configuration mode.

  • USB Authentication—When you connect a Cisco USB drive to the switch, the switch tries to authenticate the drive against an existing encrypted preshared key. Since the USB drive does not send a key for authentication, the following message is displayed on the console when you enter password encryption aes command:
    Device(config)# password encryption aes
Master key change notification called without new or old key

  • VLAN Restriction—It is advisable to have well-defined segregation while defining data and voice domain during switch configuration and to maintain a data VLAN different from voice VLAN across the switch stack. If the same VLAN is configured for data and voice domains on an interface, the resulting high CPU utilization might affect the device.

  • Wired Application Visibility and Control limitations:

    • NBAR2 (QoS and Protocol-discovery) configuration is allowed only on wired physical ports. It is not supported on virtual interfaces, for example, VLAN, port channel nor other logical interfaces.

    • NBAR2 based match criteria ‘match protocol’ is allowed only with marking or policing actions. NBAR2 match criteria will not be allowed in a policy that has queuing features configured.

    • ‘Match Protocol’: up to 256 concurrent different protocols in all policies.

    • NBAR2 and Legacy NetFlow cannot be configured together at the same time on the same interface. However, NBAR2 and wired AVC Flexible NetFlow can be configured together on the same interface.

    • Only IPv4 unicast (TCP/UDP) is supported.

    • AVC is not supported on management port (Gig 0/0)

    • NBAR2 attachment should be done only on physical access ports. Uplink can be attached as long as it is a single uplink and is not part of a port channel.

    • Performance—Each switch member is able to handle 500 connections per second (CPS) at less than 50% CPU utilization. Above this rate, AVC service is not guaranteed.

    • Scale—Able to handle up to 5000 bi-directional flows per 24 access ports and 10000 bi-directional flows per 48 access ports.

  • YANG data modeling limitation—A maximum of 20 simultaneous NETCONF sessions are supported.

  • Embedded Event Manager—Identity event detector is not supported on Embedded Event Manager.

  • The File System Check (fsck) utility is not supported in install mode.

Caveats

Caveats describe unexpected behavior in Cisco IOS-XE releases. Caveats listed as open in a prior release are carried forward to the next release as either open or resolved.

Cisco Bug Search Tool

The Cisco Bug Search Tool (BST) allows partners and customers to search for software bugs based on product, release, and keyword, and aggregates key data such as bug details, product, and version. The BST is designed to improve the effectiveness in network risk management and device troubleshooting. The tool has a provision to filter bugs based on credentials to provide external and internal bug views for the search input.

To view the details of a caveat, click on the identifier.

Open Caveats in Cisco IOS XE Bengaluru 17.4.x

Identifier

Applicable Models

Description

CSCvw17869

All models

Uplink port goes down after "no switchport" is issued

CSCvv91619

All models

Crash seen after removing/defaulting REP interfaces using range config

CSCvw17155

All models

Notification timer Expired for RF Client: Inline Power rf client(505)

CSCvw67128

All models

Purchase info should be protected and shouldn't be able to erase.

Resolved Caveats in Cisco IOS XE Bengaluru 17.4.1

Identifier

Applicable Models

Description

CSCvu14246

All models

multichassis etherchannel with macsec goes down when stack standby removed

CSCvw31564

All models

When ip tcp adjust-mss is enabled, TCP packets that are already fragmented will get dropped

Troubleshooting

For the most up-to-date, detailed troubleshooting information, see the Cisco TAC website at this URL:

https://www.cisco.com/en/US/support/index.html

Go to Product Support and select your product from the list or enter the name of your product. Look under Troubleshoot and Alerts, to find information for the problem that you are experiencing.

Related Documentation

Information about Cisco IOS XE at this URL: https://www.cisco.com/c/en/us/products/ios-nx-os-software/ios-xe/index.html

All support documentation for Cisco Catalyst 9500 Series Switches is at this URL: https://www.cisco.com/c/en/us/support/switches/catalyst-9500-series-switches/tsd-products-support-series-home.html

Cisco Validated Designs documents at this URL: https://www.cisco.com/go/designzone

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: http://www.cisco.com/go/mibs

Communications, Services, and Additional Information

  • To receive timely, relevant information from Cisco, sign up at Cisco Profile Manager.

  • To get the business impact you’re looking for with the technologies that matter, visit Cisco Services.

  • To submit a service request, visit Cisco Support.

  • To discover and browse secure, validated enterprise-class apps, products, solutions and services, visit Cisco Marketplace.

  • To obtain general networking, training, and certification titles, visit Cisco Press.

  • To find warranty information for a specific product or product family, access Cisco Warranty Finder.

Cisco Bug Search Tool

Cisco Bug Search Tool (BST) is a web-based tool that acts as a gateway to the Cisco bug tracking system that maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. BST provides you with detailed defect information about your products and software.