Release-specific Caveats and Workarounds

This section lists the caveats and workarounds when setting up or upgrading the software for each Cisco IOS XR release.

Caveats and Workarounds

Release 7.4.1

There are no caveats for system upgrade to Cisco IOS XR Release 7.4.1.

Release 7.4.2

CSCvp19524: When downgrading from Cisco IOS XR Release 7.4.2 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

Release 7.5.1

CSCvp19524: When downgrading from Cisco IOS XR Release 7.5.1 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

Release 7.5.2

CSCvp19524: When downgrading from Cisco IOS XR Release 7.5.2 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

Release 7.6.2

CSCvp19524: When downgrading from Cisco IOS XR Release 7.6.2 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

Release 7.7.2

CSCvp19524: When downgrading from Cisco IOS XR Release 7.7.2 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

Release 7.8.1

CSCvp19524: When downgrading from Cisco IOS XR Release 7.8.1 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

Release 7.8.2

CSCvp19524: When downgrading from Cisco IOS XR Release 7.8.2 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

Release 7.9.1

CSCvp19524: When downgrading from Cisco IOS XR Release 7.9.1 to any release lower than Cisco IOS XR Release 7.0.1, it's necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

  1. CSCwd30936: When downgrading from Cisco IOS XR Release 7.9.1 to an older release, the "ema_server_sdr" process may crash.

Release 7.9.2

  1. CSCvp19524: When downgrading from Cisco IOS XR Release 7.9.2 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

  2. CSCwd30936: When downgrading from Cisco IOS XR Release 7.9.2 to an older release, the "ema_server_sdr" process may crash.

Release 7.10.1

  1. CSCvp19524: When downgrading from Cisco IOS XR release 7.10.1 to any release lower than Cisco IOS XR Release 7.0.1, it is necessary to remove AAA user configurations from SYSADMIN/XR VMs before proceeding with the downgrade.

  2. CSCwd30936: When downgrading from Cisco IOS XR Release 7.10.1 to an older release, the "ema_server_sdr" process may crash.

  3. SR695094155: When upgrading the software version of an ASR 9000 router with an mLACP/ICCP Redundancy Model setup, ensure that both the active and standby nodes are upgraded to the same IOS XR version.