ISL trunk won't form after topology change
Applies to
- Fabric MetroCluster
- Brocade FC switches
- 16G ISLs
- xWDM
Issue
After changing the ISL topology to include 2 or more 16Gb ISLs in a trunk over a DWDM, the ports are immediately disabled
Example:
switchshow : switchName: FC_Switch_A1 switchType: 162.6 switchState: Online switchMode: Native switchRole: Subordinate switchDomain: 5 switchId: aaab00 switchWwn: 00:00:00:00:00:00:00:00 zoning: ON (CFG_FAB_1_RCF) switchBeacon: OFF FC Router: OFF Fabric Name: Fabric1 HIF Mode: OFF Index Port Address Media Speed State Proto ================================================== 40 40 123456 id 16G No_Sync FC LS Disabled (Port State Change threshold exceeded) 41 41 234567 id 16G No_Sync FC LS Disabled (Port State Change threshold exceeded)