Hi All
we are having some issues with our 4500X switches running VSS, the version is Version 03.06.06.E
basically the VSS just stops working for a few mins then comes back up, there is no power loss on both switches or loss of the network connectivity, they are both directly connected, the logs are below
001851: Oct 30 16:37:26.511: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/1/16 left the port-channel Port-channel1
001852: Oct 30 16:37:26.523: %VSLP-3-VSLP_LMP_FAIL_REASON: Te1/1/16: Link down
001853: Oct 30 16:37:26.523: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/16 left the port-channel Port-channel2
001854: Oct 30 16:37:26.538: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/1/15 left the port-channel Port-channel1
001855: Oct 30 16:37:26.550: %VSLP-3-VSLP_LMP_FAIL_REASON: Te1/1/15: Link down
001856: Oct 30 16:37:26.550: %VSLP-2-VSL_DOWN: All VSL links went down while switch is in ACTIVE role
001857: Oct 30 16:37:26.550: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/15 left the port-channel Port-channel2
001858: Oct 30 16:37:26.640: % Service-policy attached to VSL member ports cannot be modified or removed except defaulting VSL members.
001859: Oct 30 16:37:26.661: % Service-policy attached to VSL member ports cannot be modified or removed except defaulting VSL members.
001860: Oct 30 16:37:26.828: % Service-policy attached to VSL member ports cannot be modified or removed except defaulting VSL members.
001861: Oct 30 16:37:26.836: % Service-policy attached to VSL member ports cannot be modified or removed except defaulting VSL members.
001862: Oct 30 16:37:27.123: %C4K_REDUNDANCY-3-COMMUNICATION: Communication with the peer Supervisor has been lost
001863: Oct 30 16:37:27.130: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/1 left the port-channel Port-channel3
001864: Oct 30 16:37:27.132: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/2 left the port-channel Port-channel6
001865: Oct 30 16:37:27.133: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/3 left the port-channel Port-channel7
001866: Oct 30 16:37:27.139: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/6 left the port-channel Port-channel5
001867: Oct 30 16:37:27.140: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/7 left the port-channel Port-channel8
001868: Oct 30 16:37:27.142: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/8 left the port-channel Port-channel4
001869: Oct 30 16:37:27.147: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/9 left the port-channel Port-channel5
001870: Oct 30 16:37:27.193: % Service-policy attached to VSL member ports cannot be modified or removed except defaulting VSL members.
001871: Oct 30 16:37:27.201: % Service-policy attached to VSL member ports cannot be modified or removed except defaulting VSL members.
001872: Oct 30 16:37:27.206: %C4K_REDUNDANCY-3-SIMPLEX_MODE: The peer Supervisor has been lost
001873: Oct 30 16:38:06.840: %OSPF-5-ADJCHG: Process 100, Nbr 172.31.129.145 on Vlan4009 from FULL to DOWN, Neighbor Down: Dead timer expired
001874: Oct 30 16:38:16.440: %UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Te1/1/8, aggressive mode failure detected
001875: Oct 30 16:38:16.440: %PM-4-ERR_DISABLE: udld error detected on Te1/1/8, putting Te1/1/8 in err-disable state
001876: Oct 30 16:38:16.444: %EC-5-UNBUNDLE: Interface TenGigabitEthernet1/1/8 left the port-channel Port-channel4
001877: Oct 30 16:39:09.221: %OSPF-5-ADJCHG: Process 100, Nbr 172.31.129.145 on Vlan4009 from LOADING to FULL, Loading Done
001878: Oct 30 16:42:15.605: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot 1 port 15.
001879: Oct 30 16:42:17.845: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot 1 port 16.
001880: Oct 30 16:42:31.612: %VSLP-5-VSL_UP: Ready for control traffic
001881: Oct 30 16:42:36.617: %VSLP-5-RRP_ROLE_RESOLVED: Role resolved as ACTIVE by VSLP
001882: Oct 30 16:42:36.617: %EC-5-BUNDLE: Interface TenGigabitEthernet1/1/15 joined port-channel Port-channel1
001883: Oct 30 16:42:36.629: %EC-5-BUNDLE: Interface TenGigabitEthernet1/1/16 joined port-channel Port-channel1
001884: Oct 30 16:42:37.144: %C4K_REDUNDANCY-6-DUPLEX_MODE: The peer Supervisor has been detected
001885: Oct 30 16:43:15.977: %C4K_REDUNDANCY-6-MODE: ACTIVE supervisor initializing for sso mode
001886: Oct 30 16:43:16.150: %C4K_REDUNDANCY-3-COMMUNICATION: Communication with the peer Supervisor has been established
001887: Oct 30 16:43:16.433: %PM-4-ERR_RECOVER: Attempting to recover from udld err-disable state on Te1/1/8
001888: Oct 30 16:43:16.821: %EC-5-BUNDLE: Interface TenGigabitEthernet1/1/8 joined port-channel Port-channel4
001889: Oct 30 16:43:26.756: %C4K_REDUNDANCY-5-CONFIGSYNC: The bootvar has been successfully synchronized to the standby supervisor
001890: Oct 30 16:43:26.757: %C4K_REDUNDANCY-5-CONFIGSYNC: The config-reg has been successfully synchronized to the standby supervisor
001891: Oct 30 16:43:26.759: %C4K_REDUNDANCY-5-CONFIGSYNC: The startup-config has been successfully synchronized to the standby supervisor
001892: Oct 30 16:43:27.244: %C4K_REDUNDANCY-5-CONFIGSYNC: The private-config has been successfully synchronized to the standby supervisor
001893: Oct 30 16:43:28.036: %C4K_REDUNDANCY-5-CONFIGSYNC_RATELIMIT: The vlan database has been successfully synchronized to the standby supervisor
001894: Oct 30 16:44:11.822: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/15 joined port-channel Port-channel2
001895: Oct 30 16:44:11.843: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/16 joined port-channel Port-channel2
001896: Oct 30 16:44:15.049: %HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded
001897: Oct 30 16:44:15.821: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/1 joined port-channel Port-channel3
001898: Oct 30 16:44:15.826: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/2 joined port-channel Port-channel6
001899: Oct 30 16:44:15.836: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/3 joined port-channel Port-channel7
001900: Oct 30 16:44:15.856: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/6 joined port-channel Port-channel5
001901: 000027: Oct 30 16:44:15.013: %C4K_IOSMODPORTMAN-6-MODULEONLINE: STANDBY:Module 1 (WS-C4500X-16 S/N: JAE21120B7K Hw: 1.1) is online
001902: 000028: Oct 30 16:44:15.013: %C4K_IOSMODPORTMAN-6-MODULEONLINE: STANDBY:Module 11 (WS-C4500X-16 S/N: JAE21120ARC Hw: 1.1) is online
001903: Oct 30 16:44:15.906: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/8 joined port-channel Port-channel4
001904: Oct 30 16:44:15.911: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/9 joined port-channel Port-channel5
001905: Oct 30 16:44:16.079: %RF-5-RF_TERMINAL_STATE: 1 ha_mgr: Terminal state reached for (SSO)
001906: 000029: Oct 30 16:44:15.835: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet2/1/1 joined port-channel Port-channel3
001907: 000030: Oct 30 16:44:15.859: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet2/1/2 joined port-channel Port-channel6
001908: 000031: Oct 30 16:44:15.865: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet2/1/3 joined port-channel Port-channel7
001909: 000032: Oct 30 16:44:15.949: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet2/1/6 joined port-channel Port-channel5
001910: 000033: Oct 30 16:44:15.964: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet2/1/8 joined port-channel Port-channel4
001911: 000034: Oct 30 16:44:16.071: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet2/1/9 joined port-channel Port-channel5
001912: Oct 30 16:44:17.838: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/7 joined port-channel Port-channel8
001913: 000035: Oct 30 16:44:17.871: %EC-5-BUNDLE: STANDBY:Interface TenGigabitEthernet2/1/7 joined port-channel Port-channel8