Cisco MDS-9124 Troubleshooting Guide - Page 239

Chapter 11 Troubleshooting VSANs, Domains, and FSPF Domain Issues Send documentation comments to [email protected] Assigning a New Domain ID Using Fabric Manager All devices attached to the switch in the VSAN get a new FC ID when a new domain ID is assigned. Some hosts or storage devices may not function as expected if the FC ID of the host or storage device changes. To verify FC domain ID overlap and reassign a new domain ID using Fabric Manager, follow these steps: Step 1 Step 2 Step 3 Step 4 Step 5 Choose Switches > Interfaces > FC Physical and check the FailureCause column for an isolation or domain overlap status. Choose Fabricxx > VSANxx > Domain Manager to view which domains are currently in the VSAN. Repeat Step 2 on the other switch to determine which domain IDs overlap. Select the Configuration tab and set Config Domain and Config Type 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. Set the Restart drop-down menu to disruptive and click Apply Changes 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. Assigning a New Domain ID Using the CLI All devices attached to the switch in the VSAN get a new FC ID when a new domain ID is assigned. Some hosts or storage devices may not function as expected if the FC ID of the host or storage device changes. To verify FC domain ID overlap and reassign a new domain ID using the CLI, follow these steps: Step 1 Issue the show interface command. The following example output shows the isolation error message. switch# show interface fc2/14 fc2/14 is down (Isolation due to domain overlap) Hardware is Fibre Channel, WWN is 20:4e:00:05:30:00:63:9e vsan is 2 Beacon is turned off 192 frames input, 3986 bytes, 0 discards 0 runts, 0 jabber, 0 too long, 0 too short 0 input errors, 0 CRC, 3 invalid transmission words 0 address id, 0 delimiter 0 EOF abort, 0 fragmented, 0 unknown class 231 frames output, 3709 bytes, 16777216 discards Received 28 OLS, 19 LRR, 16 NOS, 48 loop inits Transmitted 62 OLS, 22 LRR, 25 NOS, 30 loop inits OL-9285-05 Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x 11-19