Resolving Duplicate Device Alias Names - Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual

Chapter 15 Troubleshooting Distributed Device Alias Services
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

Resolving Duplicate Device Alias Names

To verify that a duplicate device alias name exists in the fabrics, follow these steps:
Review the CFS or device alias merge failure syslogs to confirm that the merge failed. Optionally, you
Step 1
can issue the following CLI command to view the status of the merge:
switch-1# show cfs merge status name device-alias
Verify that the reason for the merge failure is a database mismatch by using the show device-alias merge
Step 2
status command.
switch-1# show device-alias merge status
Identify the duplicate device alias name by using the show device-alias database command from the
Step 3
appropriate switch in each of the two fabrics. In this example, both databases have the same device alias,
A1, mapped to different pWWNs.
switch-1# show device-alias database
switch-2# show device-alias database
Make the appropriate changes to the device alias database for one of the fabrics. Refer to the Cisco MDS
Step 4
9000 Family CLI Configuration Guide for details.
OL-9285-05
Physical-fc Merge Status: Failed [ Mon Apr
Local Fabric
-------------------------------------------------------------------------
Switch WWN
-------------------------------------------------------------------------
20:00:00:0d:ec:2f:c1:40 172.20.150.38
Total number of switches = 1
Remote Fabric
-------------------------------------------------------------------------
Switch WWN
-------------------------------------------------------------------------
20:00:00:0d:ec:04:99:40 172.20.150.30
Total number of switches = 1
Result: Failure
Reason: Databases could not be merged due to mismatch.
device-alias name A1 pwwn 21:01:01:01:01:01:01:01
Total number of entries = 1
device-alias name A1 pwwn 21:01:01:01:01:01:01:02
Total number of entries = 1
9 15:57:58 2007 ] ===> Merge status
IP Address
switch-1
IP Address
switch-2
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
Merge Failure Issues
[Merge Master]
[Merge Master]
15-5