S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
11-20
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 11 Troubleshooting VSANs, Domains, and FSPF
Domain Issues
Step 2
Use the
show fcdomain domain-list vsan
vsan-id
command to view which domains are currently in
your fabric.
switch1#
show fcdomain domain-list vsan 2
Number of domains: 2
Domain ID WWN
--------- -----------------------
0x4a(74) 20:01:00:05:30:00:13:9f [Local]
0x4b(75)
20:01:00:05:30:00:13:9e [Principal]
--------- -----------------------
Step 3
Repeat
Step 2
on the other switch to determine which domain IDs overlap.
switch2#
show fcdomain domain-list vsan 2
Number of domains: 1
Domain ID WWN
--------- -----------------------
0x4b(75)
20:01:00:05:30:00:13:9e [Local][Principal]
--------- -----------------------
In this example, switch 2 is isolated because of a domain ID 75 overlap.
Step 4
Use the
fcdomain
domain
domain-id
[static | preferred]
vsan
vsan-id
command to change the domain
ID for one of the overlapping domain IDs.
•
The static option tells the switch to request that particular domain ID. If it does not get that particular
address, it will isolate itself from the fabric.
•
The preferred option has the switch request a specified domain ID. If that ID is unavailable, it will
accept another ID.
Step 5
Use the
fcdomain restart disruptive vsan
command to restart the Domain Manager.
Note
While the static option can be applied to runtime after a disruptive or nondisruptive restart, the
preferred option is applied to runtime only after a disruptive restart.
Using Fabric Reconfiguration for Domain ID Assignments
You can use a fabric reconfiguration to reassign domain IDs and resolve any overlapping domain IDs. If
you enable the auto-reconfigure option on both switches before connecting the fabric, a disruptive
reconfiguration (RCF) occurs. The RCF functionality would automatically force a new principal switch
selection and cause new domain IDs to be assigned to the different switches.
Caution
A disruptive reconfiguration might affect data traffic.
