Cisco Bug: CSCuj34359 - VSS breaks with static mac configured.
Apr 17, 2019
- Cisco Catalyst 4000 Series Switches
Known Affected Releases
Symptom: On a VSS with a dual sup 7E, configuiring a mac address as static and failing over will cause the standby to go into a bootloop. Conditions: Static mac configs are present. - Switch#sh mac address-table static - 100 03bf.c0a8.005c static Te1/3/2,Te1/3/3,Te1/3/4 Once this has been configured and the supervisors failed-over, the standby sup will go into a boot loop with the following error message. *Sep 11 20:49:12.131: %VSLP-5-RRP_ROLE_RESOLVED: Role resolved as STANDBY by VSLP *Sep 11 20:49:49.518: %C4K_REDUNDANCY-2-IOS_VERSION_CHECK_FAIL: STANDBY:IOS version mismatch. Active supervisor version is 15.1(2)SG (cat4500e-UNIVERSALK9-M). Standby supervisor version is 15.1(2)SG (cat4500e-UNIVERSALK9-M). Redundancy feature may not work as expected. On the primary we can see the mac address show up in the mcl mismatch Switch#sh redundancy config-sync failures mcl Mismatched Command List ----------------------- module provision switch 1 ! <submode> "provision-switch" - mac address-table static 03bf.c0a8.005c vlan 100 interface Te3/2 Te3/3 Te3/4 Switch#
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