Release Notes for Cisco Catalyst 9600 Series Switches, Cisco IOS XE Amsterdam 17.2.x
Introduction
Cisco Catalyst 9600 Series Switches are the next generation purpose-built 40 GigabitEthernet, 50 GigabitEthernet, 100 GigabitEthernet, and 400 GigabitEthernet modular core and aggregation platform providing resiliency at scale with the industry’s most comprehensive security while allowing your business to grow at the lowest total operational cost. They have been purpose-built to address emerging trends of Security, IoT, Mobility, and Cloud.
They deliver hardware and software convergence in terms of ASIC architecture with Unified Access Data Plane (UADP) 3.0 and Cisco Silicon One Q200. The platform runs an Open Cisco IOS XE that supports model driven programmability, Serial Advanced Technology Attachment (SATA) Solid State Drive (SSD) local storage, and a higher memory footprint). The series forms the foundational building block for SD-Access, which is Cisco’s lead enterprise architecture.
It also supports features that provide high availability, advanced routing and infrastructure services, security capabilities, and application visibility and control.
Whats New in Cisco IOS XE Amsterdam 17.2.1
Hardware Features in Cisco IOS XE Amsterdam 17.2.1
Feature Name |
Description and Documentation Link |
---|---|
C9600-LC-48S |
Cisco Catalyst 9600 Series 48-port supporting 1 G on each of its 48 SFP ports.
See Cisco Catalyst 9600 Series Switches Hardware Installation Guide. |
Cisco SFP-25G Direct-Attach and Active Optical Cables |
For information about these cables, see Cisco 25GBASE SFP28 Modules Data Sheet. For information about device compatibility, see the Transceiver Module Group (TMG) Compatibility Matrix. |
Cisco QSFP-40G Direct-Attach Cables |
Supported direct-attach copper cable product numbers:
For information about these cables, see Cisco 40GBASE QSFP Modules Data Sheet. For information about device compatibility, see the Transceiver Module Group (TMG) Compatibility Matrix. |
Cisco QSFP-100G Direct Attached Cables |
Supported direct-attach copper cable product numbers:
For information about these cables, see Cisco 100GBASE QSFP-100G Modules Data Sheet. For information about device compatibility, see the Transceiver Module Group (TMG) Compatibility Matrix. |
Cisco 40GBASE QSFP Modules (40G to 4x10G Breakout Modules) |
Supported transceiver module product numbers:
For information about these cables, see Cisco 40GBASE QSFP Modules Data Sheet. For information about device compatibility, see the Transceiver Module Group (TMG) Compatibility Matrix. |
Cisco QSFP-40G Direct-Attach and Active Optical Breakout Cables |
For information about these cables, see Cisco 40GBASE QSFP Modules Data Sheet. For information about device compatibility, see the Transceiver Module Group (TMG) Compatibility Matrix. |
Software Features in Cisco IOS XE Amsterdam 17.2.1
Feature Name |
Description, Documentation Link, and License Level Information |
---|---|
Breakout Interfaces (C9600-LC-24C) |
The twelve ports of the top row (odd numbers) of a C9600-LC-24C line card now support breakout configuration.
See Interface and Hardware Components → Configuring Interface Characteristics.
(Network Advantage) |
Cisco StackWise Virtual |
The following enhancements have been made to the feature:
See High Availability → Configuring Cisco StackWise Virtual.
(Network Advantage) |
Factory Reset with 3-pass Overwrite |
Enables factory reset with 3-pass overwrite. A secure 3-pass keyword has been introduced.
See System Management → Performing Factory Reset.
(Network Advantage) |
IPv6: HTTP SGACL enforcement with IPv6 Policy Server |
Supports 8 IPv4 and 8 IPv6 addresses per server for SGACL and Environment Data Download over REST.
See Cisco TrustSec → SGACL and Environment Data Download over REST.
(Network Advantage) |
Loop Detection Guard |
Provides a way of detecting network loops. The feature can be used in situations where there may be unmanaged switches in a network that do not understand Spanning Tree Protocol (STP) or where STP is not configured on the network. You can take one of these actions when a loop is detected: error-disable either the source port or the destination port, or have the system display a syslog message (and not disable a port).
See Layer 2 → Configuring Loop Detection Guard.
(Network Advantage) |
Programmability
|
The following programmability features are introduced in this release:
See Programmability.
|
Quad-Supervisor with Route Processor Redundancy (RPR) |
Provides intra-chassis redundancy in a setup where Cisco StackWise Virtual is configured between two chassis. The feature requires the installation of at least one redundant supervisor in one of the chassis (in addition to the Cisco StackWise Virtual active and standby). The added redundancy reduces the time taken to reach a ready state with full bandwidth in the event of a failure or a forced switchover. Ensure that your setup complies with the following guidelines to implement Quad-Supervisor with RPR:
See High Availability → Quad-Supervisor with Route Processor Redundancy.
(Network Advantage) |
SCP Performance Improvements |
Secure Shell (SSH) bulk data transfer mode can now be used to enhance the throughput performance of Secure Copy Protocol (SCP) operating in the capacity of a client or server. You can enable this by using the ip ssh bulk-mode global configuration command.
See System Management → Secure Copy.
(Network Advantage) |
Session Limit - To prevent MAC address flooding DOS attack |
Enables you to configure an access session limit profile, which will allow you to limit the number of voice and data hosts connecting to a port.
See Security → Configuring IEEE 802.1x Port-Based Authentication.
(Network Advantage) |
Hierarchical VPLS with MPLS access |
Reduces signaling overhead and packet replication between devices when compared to configuring VPLS.
See Multiprotocol Label Switching (MPLS) → Configuring Hierarchical VPLS with MPLS Access.
(Network Advantage) |
VPLS: Routed Pseudowire IRB for IPv4 Unicast |
Enables a switch interface to route traffic instead of using a router.
See Multiprotocol Label Switching (MPLS) → Configuring VPLS: Routed Pseudowire IRB for IPv4 Unicast.
(Network Advantage) |
VPN ID in NetFlow |
Supports Virtual Private Network Identifier (VPN-ID) configuration in Flexible NetFlow. A VPN-ID is global and unique. It is used to identify a VPN across autonomous systems (ASes).
See Network Management → Configuring Flexible NetFlow.
(Network Advantage) |
VRF Aware NAT |
VRF awareness enables NAT to carry out address translation by taking the VRF of the private networks into consideration. This feature allows private networks to be placed in different VRFs.
See IP Addressing Services → Configuring Network Address Translation.
(Network Advantage) |
VRF Support for TCL Socket |
The Tool Command Language (TCL) socket feature supports Virtual Routing and Forwarding (VRF).
See Network Management Commands.
(Network Advantage) |
New on the Web UI |
|
|
Use the WebUI for:
|
Serviceability |
|
See Command Reference, Cisco IOS XE Amsterdam 17.2.x (Catalyst 9600 Switches) |
|
factory-reset |
The command has been modified. The switch keyword is introduced for devices that support the Cisco StackWise Virtual solution. You can perform factory reset on the active and standby switch. |
show platform hardware fed switch active fwd-asic resource tcam utilization |
The command output is enhanced to display TCAM utilization categorised by IPv4, IPv6, MPLS and other protocols.
|
debug condition vrf debug ip pim debug ipv6 pim |
The debug condition vrf and debug ip pim commands enable you to debug multiple VRFs at the same time. The debug ipv6 pim introduces IPv6 support for debugging multiple VRFs at the same time. |
Important Notes
Unsupported Features
-
Cisco Application Visibility and Control (AVC)
-
IPsec VPN
-
Network-Based Application Recognition (NBAR) and Next Generation NBAR (NBAR2)
Complete List of Supported Features
For the complete list of features supported on a platform, see the Cisco Feature Navigator at https://www.cisco.com/go/cfn.
Default Behaviour
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).
Supported Hardware
Cisco Catalyst 9600 Series Switches—Model Numbers
The following table lists the supported switch models. For information about the available license levels, see section License Levels.
Switch Model (append with “=” for spares) |
Description |
---|---|
C9606R |
Cisco Catalyst 9606R Switch
|
Supported Hardware on Cisco Catalyst 9600 Series Switches
Product ID (append with “=” for spares) |
Description |
---|---|
Supervisor Modules |
|
C9600-SUP-1 |
Cisco Catalyst 9600 Series Supervisor 1 Module This supervisor module is supported on the C9606R chassis. |
C9K-F2-SSD-240GB |
Cisco Catalyst 9600 Series 240GB SSD Storage |
C9K-F2-SSD-480GB |
Cisco Catalyst 9600 Series 480GB SSD Storage |
C9K-F2-SSD-960GB |
Cisco Catalyst 9600 Series 960GB SSD Storage |
Line Cards |
|
C9600-LC-48YL |
Cisco Catalyst 9600 Series 48-Port SFP56 line card.
|
C9600-LC-24C |
Cisco Catalyst 9600 Series 24-Port 40G/12-Port 100G line card.
|
C9600-LC-48TX |
Cisco Catalyst 9600 Series 48-Port MultiGigabit RJ45 line card.
|
C9600-LC-48S |
Cisco Catalyst 9600 Series 48-Port SFP line card.
|
AC Power Supply Modules |
|
C9600-PWR-2KWAC |
Cisco Catalyst 9600 Series 2000W AC Power Supply Module3 |
DC Power Supply Modules |
|
C9600-PWR-2KWDC |
Cisco Catalyst 9600 Series 2000W DC Power Supply Module |
Optics Modules
Cisco Catalyst Series Switches support a wide range of optics and the list of supported optics is updated on a regular basis. Use the Transceiver Module Group (TMG) Compatibility Matrix tool, or consult the tables at this URL for the latest transceiver module compatibility information: https://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html
Compatibility Matrix
The following table provides software compatibility information between Cisco Catalyst 9600 Series Switches, Cisco Identity Services Engine, Cisco Access Control Server, and Cisco Prime Infrastructure.
Catalyst 9600 |
Cisco Identity Services Engine |
Cisco Access Control Server |
Cisco Prime Infrastructure |
---|---|---|---|
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 |
- |
- |
Gibraltar 16.12.8 |
2.6 |
- |
- |
Gibraltar 16.12.7 |
2.6 |
- |
- |
Gibraltar 16.12.6 |
2.6 |
- |
- |
Gibraltar 16.12.5b |
2.6 |
- |
- |
Gibraltar 16.12.5 |
2.6 |
- |
- |
Gibraltar 16.12.4 |
2.6 |
- |
- |
Gibraltar 16.12.3a |
2.6 |
- |
- |
Gibraltar 16.12.3 |
2.6 |
- |
- |
Gibraltar 16.12.2 |
2.6 |
- |
- |
Gibraltar 16.12.1 |
2.6 |
- |
- |
Gibraltar 16.11.1 |
2.6 2.4 Patch 5 |
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 minimum4 |
512 MB5 |
256 |
1280 x 800 or higher |
Small |
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 9600 Series Supervisor Modules. 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 (C9600-SUP-1) |
ROMMON Version (C9600X-SUP-2) |
---|---|---|
Amsterdam 17.2.1 |
17.1.1[FC2] |
- |
Amsterdam 17.1.1 |
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 Amsterdam 17.2.1 |
CAT9K_IOSXE |
cat9k_iosxe.17.02.01.SPA.bin |
No Payload Encryption (NPE) |
cat9k_iosxe_npe.17.02.01.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
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. 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. In case of a High Availability set up, 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.
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 Amsterdam 17.2.1. To check the current FPGA version, enter the show firmware version all command in IOS mode or the version -v command in ROMMON mode.
Note |
|
Software Installation Commands
Summary of Software Installation Commands |
|
---|---|
To install and activate the specified file, and to commit changes to be persistent across reloads:
To separately install, activate, commit, cancel, or remove the installation file: |
|
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. |
Upgrading in Install Mode
Follow these instructions to upgrade from one release to another, in install mode. To perform a software image upgrade, you must be booted into IOS through boot flash:packages.conf
Before you begin
Caution |
You must comply with these cautionary guidelines during an upgrade:
|
Note that you can use this procedure for the following upgrade scenarios:
When upgrading from ... |
To... |
---|---|
Cisco IOS XE Amsterdam 17.1.x or an earlier release |
Cisco IOS XE Amsterdam 17.2.1 |
The sample output in this section displays upgrade from Cisco IOS XE Amsterdam 17.1.1 to Cisco IOS XE Amsterdam 17.2.1 using install commands.
Procedure
Step 1 |
Clean Up |
Step 2 |
Copy new image to flash |
Step 3 |
Set boot variable |
Step 4 |
Software install image to flash |
Step 5 |
upgrade rom-monitor capsule golden switch Use this command to upgrade the ROMMON version. After you enter the command, confirm upgrade at the system prompt. For more information about this, see Upgrading the ROMMON, in this document.
|
Step 6 |
Reload |
Downgrading in Install Mode
Follow these instructions to downgrade from one release to another, in install mode. To perform a software image downgrade, you must be booted into IOS through boot flash:packages.conf .
Before you begin
Note that you can use this procedure for the following downgrade scenarios:
When downgrading from ... |
To ... |
---|---|
Cisco IOS XE Amsterdam 17.2.1 |
Cisco IOS XE Amsterdam 17.1.x or an earlier release. |
The sample output in this section shows downgrade from Cisco IOS XE Amsterdam 17.2.1 to Cisco IOS XE Amsterdam 17.1.1, using install commands.
Important |
New switch models that are introduced in a release cannot be downgraded. The release in which a module is introduced is the minimum software version for that model. We recommend upgrading all existing hardware to the same release as the latest hardware.
|
Procedure
Step 1 |
Clean Up |
Step 2 |
Copy new image to flash |
Step 3 |
Downgrade software image |
Step 4 |
Reload |
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 9600 Series Switches fall under these base or add-on license levels.
Base Licenses
-
Network Advantage
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 Advantage
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.
License Types
The following license types are available:
-
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.
License Levels - Usage Guidelines
-
Base licenses (Network-Advantage) are ordered and fulfilled only with a permanent license type.
-
Add-on licenses (DNA Advantage) are ordered and fulfilled only with a 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.
-
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.
Cisco Smart Licensing
Cisco Smart Licensing is a flexible licensing model that provides you with an easier, faster, and more consistent way to purchase and manage software across the Cisco portfolio and across your organization. And it’s secure – you control what users can access. With Smart Licensing you get:
-
Easy Activation: Smart Licensing establishes a pool of software licenses that can be used across the entire organization—no more PAKs (Product Activation Keys).
-
Unified Management: My Cisco Entitlements (MCE) provides a complete view into all of your Cisco products and services in an easy-to-use portal, so you always know what you have and what you are using.
-
License Flexibility: Your software is not node-locked to your hardware, so you can easily use and transfer licenses as needed.
To use Smart Licensing, you must first set up a Smart Account on Cisco Software Central (http://software.cisco.com).
Important |
Cisco Smart Licensing is the default and the only available method to manage licenses. |
For a more detailed overview on Cisco Licensing, go to cisco.com/go/licensingguide.
Deploying Smart Licensing
The following provides a process overview of a day 0 to day N deployment directly initiated from a device. Links to the configuration guide provide detailed information to help you complete each one of the smaller tasks.
Procedure
Step 1 |
Begin by establishing a connection from your network to Cisco Smart Software Manager on cisco.com. In the software configuration guide of the required release, see System Management → Configuring Smart Licensing → Connecting to CSSM |
Step 2 |
Create and activate your Smart Account, or login if you already have one. To create and activate Smart Account, go to Cisco Software Central → Create Smart Accounts. Only authorized users can activate the Smart Account. |
Step 3 |
Complete the Cisco Smart Software Manager set up. |
With this,
-
The device is now in an authorized state and ready to use.
-
The licenses that you have purchased are displayed in your Smart Account.
Using Smart Licensing on an Out-of-the-Box Device
If an out-of-the-box device has the software version factory-provisioned, all licenses on such a device remain in evaluation mode until registered in Cisco Smart Software Manager.
In the software configuration guide of the required release, see System Management → Configuring Smart Licensing → Registering the Device in CSSM
Scaling Guidelines
For information about feature scaling guidelines, see the Cisco Catalyst 9600 Series Switches datasheets at:
Limitations and Restrictions
-
Auto negotiation: The SFP+ interface (TenGigabitEthernet0/1) on the Ethernet management port with a 1G transceiver does not support auto negotiation.
-
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. -
Convergence: During SSO, a higher convergence time is observed while removing the active supervisor module installed in slot 3 of a C9606R chassis.
-
Hardware Limitatons — Optics:
-
Installation restriction for C9600-LC-24C linecard with CVR-QSFP-SFP10G adapater —This adapter must not be installed on an even numbered port where the corresponding odd numbered port is configured as 40GE port. For example, if port 1 is configured as 40GE, CVR-QSFP-SFP10G must not be installed in port 2.
Installation restriction for C9600-LC-24C linecard with CVR-QSFP-SFP10G adapater — If you insert a 40-Gigabit Ethernet Transceiver Module to odd numbered port, the corresponding even numbered port does not work with CVR-QSFP-SFP10G adapter.
-
-
Hardware Limitatons — Power Supply Modules:
-
Input voltage for AC power supply modules—All AC-input power supply modules in the chassis must have the same AC-input voltage level.
-
Using power supply modules of different types—When mixing AC-input and DC-input power supplies, the AC-input voltage level must be 220 VAC.
-
-
In-Service Software Upgrade (ISSU)
-
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.
-
-
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.
-
-
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.
-
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 Amsterdam 17.2.x
Identifier |
Description |
---|---|
DHCPv6 RELAY-REPLY packet is being dropped |
|
DHCP server sends out a NAK packet during DHCP renewal process. |
|
Unable to use VLAN range 4084-4095 for any business operations |
|
QoS ACL matching incorrectly when udp range is used |
Resolved Caveats in Cisco IOS XE Amsterdam 17.2.1
Identifier |
Description |
---|---|
SVL : OSPFv3 and BFD flapping when the standby is coming up |
|
Packet loss and FSC/RCV Error seen when pumping with mgig IXIA card (1518-9216bytes) |
|
Fed crashes when show cli for btrace counters is executed |
|
Mac addr count discrepancy b/w active/standby fed post core flap / sso even when no VC discrepancy |
|
Cat3k/9k crash on running show platform software fed switch 1 fss abstraction |
|
After valid ip conflict, SVI admin down responds to GARP |
|
CAT9K intermittently not responding to SNMP |
|
802.1x-MultiAuth/MultiDomain: C9K - Traffic drop in egress direction for Data-Vlan on a Auth port |
|
DAD iface not being shown under Device360 (StackWise Virtual) |
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 9600 Series Switches is at this URL: https://www.cisco.com/c/en/us/support/switches/catalyst-9600-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: https://cfnng.cisco.com/mibs
Communications, Services, and Additional Information
-
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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.