Cisco WLC 5700 Series Command Reference Manual page 26

redundancy config-sync mismatched-commands
You can ignore the MCL by doing the following:
1 Enter the redundancy config-sync ignore mismatched-commands command.
2 Reload the standby switch; the system changes to SSO mode.
If you ignore the mismatched commands, the out-of-sync configuration at the active switch and the standby
Note
switch still exists.
3 Verify the ignored MCL with the show redundancy config-sync ignored mcl command.
If SSO mode cannot be established between the active and standby switches because of an incompatibility in
the configuration file, a mismatched command list (MCL) is generated at the active switch and a reload into
route processor redundancy (RPR) mode is forced for the standby switch.
Note RPR mode is supported on Catalyst 3850 switches as a fallback in case of errors. It is not configurable.
If you attempt to establish an SSO after removing the offending configuration and rebooting the standby
switch with the same image, the C3K_REDUNDANCY-2-IOS_VERSION_CHECK_FAIL and
ISSU-3-PEER_IMAGE_INCOMPATIBLE messages appear because the peer image is listed as incompatible.
You can clear the peer image from the incompatible list with the redundancy config-sync ignore
mismatched-commands EXEC command while the peer is in a standby cold (RPR) state. This action allows
the standby switch to boot in a standby hot (SSO) state when it reloads.
Examples This example shows how to revalidate the mismatched command list with the modified configuration:
Controller# redundancy config-sync validate mismatched-commands
Controller#
High Availability Command Reference, Cisco IOS XE Release 3E (Cisco WLC 5700 Series)
18
High Availability Commands
OL-32317-01