Cisco MDS 9000 Series

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Switch WWN IP Address
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20:00:00:0d:ec:2f:c1:40 172.20.150.38 [Merge Master] <<< Merge Master#1
switch-1
Total number of switches = 1
Remote Fabric
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Switch WWN IP Address
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20:00:00:0d:ec:04:99:40 172.20.150.30 [Merge Master] <<< Merge Master#2
switch-2
Total number of switches = 1
Step 3 Depending on the Cisco MDS NX-OS release your switch is using, run one of the following commands:
• Cisco MDS NX-OS Release 8.1(1) and later releases
Use the show device-alias merge conflicts command to display the device alias and pWWNs that are causing a
merge failure. Use the no device-alias distribute command, followed by the device-alias distribute command to
update the information about the merge conflicts.
Run the show device-alias merge conflicts command from a switch listed as a merge master.
Note
In the following example, the pWWN 21:01:01:01:01:01:01:02 is mapped to device-alias A3 on switch-1, and to
device-alias A1 on switch-2:
switch-1# show device-alias merge conflicts
Merge Status : Failure
Peer Switch SWWN : 20:00:00:0d:ec:24:f5:00
Conflicts :
1. Conflicting Device-aliases : 1
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Local Device-alias Peer Device-alias PWWN
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A3 A1 pwwn 21:01:01:01:01:01:01:02
• Cisco MDS NX-OS Release 7.3 and earlier releases
Compare the device-alias databases manually to identify the pWWNs that are causing a merge failure.
On the switches where the merge failed in step Step 1, on page 176, use the show device-alias database command
to identify if a pWWN that is mapped to two different device-alias names exists.
In this example, the pWWN 21:01:01:01:01:01:01:02 is mapped to the device-alias A3 on switch-1 and to the
device-alias A1 on switch-2:
switch-1# show device-alias database
device-alias name A3 pwwn 21:01:01:01:01:01:01:02
Total number of entries = 1
switch-2# show device-alias database
device-alias name A1 pwwn 21:01:01:01:01:01:01:02
Step 4 Run the device-alias name name pwwn id command to change the device-alias name on one of the switches to match
the device-alias name on the other switch.
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
177
Distributing Device Alias Services
Resolving Duplicate pWWNs (Different Device Alias Names, Same pWWN)