To enable the clear install command, you should first run the service internal command in global configuration mode, and then run the clear install command in privileged EXEC mode. Run the show issu state detail command to see the current ISSU state. However, this information isn’t available in the show install command log.
Now, both the controllers come up withĪn ISSU upgrade that is canceled because of configuration synchronization failure on the standby controller rolls back to TheĪctive controller reloads at this stage, after the completion of bulk synchronization. At this point, the system has a version mismatch (V1 and V2). Using ISSU, and then power cycle the active controller.
(V1) software on the active controller and then apply a SMU hot patch and perform a commit. The following is a sample scenario: Install Version1 Of ISSU is triggered to bring both the controllers to the same version. You can ignore the warning message because it doesn’t have any functional impact.ĭuring ISSU upgrade, if both the controllers (active and standby) have different images after the power cycle, an auto cancel
Guidelines and Restrictions for In-Service Software Upgrade A power interruption during upgrade procedure might corrupt the software image. Schedule the upgrade when your network is stable and steady.Įnsure uninterrupted power supply. Prerequisites for Performing In-Service Software UpgradeĮnsure that both Active and Standby controllers are in install mode and are booted from bootflash:/nf.Įnsure that the network or device is not being configured during the upgrade. Onboard the controller software image to the flash memory.
ISSU is supported only on the following Cisco Catalyst 9800 Series Wireless Controllers, and supports upgrade and downgrade.Ĭisco Catalyst 9800-80 Wireless ControllerĬisco Catalyst 9800-40 Wireless ControllerĬisco Catalyst 9800-L Wireless ControllerĬisco Catalyst 9800-CL Wireless Controller (Private Cloud) ISSU can also be used to apply cold patches without impacting the active network. ISSU helps network administrators avoidĪ network outage when performing a software upgrade. In-Service Software Upgrade (ISSU) is a procedure to upgrade a wireless controller image to a later release or downgrade toĪn earlier release on a controller while the network continues to forward packets. Information About In-Service Software Upgrade
Configuration Example for Local Mode - Wireless and Wired.Configuring Local Area Bonjour for Wireless FlexConnect Mode.Configuring Local Area Bonjour for Wireless Local Mode.Cisco DNA Service for Bonjour Solution Overview.Deny Wireless Client Session Establishment Using Calendar Profiles.Embedded Wireless on Cisco Catalyst 9000 Series Switches for Single Secure Site.Fabric in a Box with External Fabric Edge.802.11r Support for Flex Local Authentication.Local Extensible Authentication Protocol.Transport Layer Security Tunnel Support.Controller Self-Signed Certificate for Wireless AP Join.Authentication and Authorization Between Multiple RADIUS Servers.Policy Enforcement and Usage Monitoring.