Resolving Mode Mismatch - Cisco MDS 9000 Series Configuration Manual

Resolving Mode Mismatch

Perform this step after device-alias distribution is disabled by running the no device-alias distribute command.
Note
In the following example, the device-alias name A3 on switch-1 is changed to match the device-alias name A1 on switch-2:
switch-1# configure
Enter configuration commands, one per line. End with CNTL/Z.
switch-1(config)# device-alias database
switch-1(config-device-alias-db)# no device-alias name A3
switch-1(config-device-alias-db)# device-alias name A1 pwwn 21:01:01:01:01:01:01:02
Step 5 If there are more duplicate device-alias names, perform step
the duplicate device-alias names issue.
Step 6 Use the device-alias distribute command to enable the device-alias distribution and initiate a merge:
switch-1(config)# device-alias distribute
Step 7 Use the show cfs merge status name device-alias command to verify in the output if the merge was successful.
Resolving Mode Mismatch
The Device Alias feature can operate in either Basic or Enhanced mode. If the modes are different in two
fabrics, CFS merge between the fabrics fails.
To verify that the device-alias mode is different in two fabrics, perform these steps:
Step 1 Review the CFS or device-alias merge failure syslog to confirm that the merge failed. Alternatively, run the show cfs
merge status name device-alias command to view the status of the merge.
switch# show cfs merge status name device-alias
Physical-fc Merge Status: Failed [ Mon Apr
Local Fabric
-------------------------------------------------------------------------
Switch WWN
-------------------------------------------------------------------------
20:00:00:0d:ec:2f:c1:40
Total number of switches = 1
Remote Fabric
-------------------------------------------------------------------------
Switch WWN
-------------------------------------------------------------------------
20:00:00:0d:ec:04:99:40
Total number of switches = 1
Step 2 Use the show device-alias merge status command to verify that the reason for the merge failure is a mode mismatch. If
there is a mode mismatch, the reason that is displayed in the output is either "Databases could not be merged
due to mode mismatch" or "One of the merging fabrics cannot support device-alias
Enhanced mode."
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
178
Step 3, on page 177
9 15:57:58 2007 ] <===Merge status
IP Address
172.20.150.38 [Merge Master] <<< Merge Master#1
switch-1
IP Address
[Merge Master] <<< Merge Master#2
172.20.150.30
switch-2
Distributing Device Alias Services
and step Step 4, on page 177 to resolve