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Multiple switches in the fabric were power cycled due to power outage. MDS-9513 (edge) switch running NX OS 5.2(8f) failed to rejoin the fabric after power outage, resulting in VSAN isolation Multiple switches in the fabric were power cycled After the edge switch power cycled, it became isolated from the fabric due to Zone merge full database mismatch. Once the zone merge failure was resolved, the switch was still unable to rejoin the fabric due to domain ID assignment failure The switch was previously part of the fabric with a static domain ID of 48
While the edge switch was isolated from the fabric due to zone merge failure, IVR (configured on the core switch) could acquire virtual domain ID 48 which showed in the list of reserved domain IDs. show fcdomain allowed vsan 10Already assigned or reserved domain IDs: 23, 48 ,50,52,64,66,68,70,72,100. [Inter VSAN routing] allowed domain IDs: 1-22,24-47,49-239. [User] configured allowed domain IDs: 1-239. After the zone merge failure was resolved on the edge switch, it was still unable to rejoin the fabric with static domain ID 48 due to IVR already using virtual domain ID 48. show ivr virtual-domainsAFID VSAN Virtual Domain Native VSAN LSR Owner ------------------------------------------------------------------------------ 1 14 0xdc(220) 10 0x0a( 10) 20:0e:00:0d:ec:df:55:11 1 14 0xed(237) 50 0x64(100) 20:0e:00:0d:ec:6c:77:00 1 50 0x17( 23) 170 0x44( 68) 20:32:00:05:73:a1:44:44 1 50 0x30( 48) 10 0x44( 68) 20:32:00:05:73:a1:cc:44 Edge Switch Error: FCDOMAIN-2-EPORT_ISOLATED: %$VSAN 10%$ Isolation of interface port-channel 22 (reason: domain ID assignment failure) Core Switch Error: FCDOMAIN-2-EPORT_ISOLATED: %$VSAN 10%$ Isolation of interface port-channel 22 (reason: merge requires domains that are not allowed)
Change the affected VSAN domain ID to an available domain ID. Refer to the output of the following for a list of available domain IDs: show fcdomain allowed vsan x Example: switch# config t switch(config)# fcdomain domain 2 static vsan 10 switch(config)# fcdomain restart vsan 10 Note: While the static domain option can be applied at runtime after a non-disruptive restart, the preferred domain option is applied at runtime only after a disruptive restart .
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