Cisco MDS 9000 Series Configuration Guide

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 Step 3, on page 177 and step Step 4, on page 177 to resolve
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 9 15:57:58 2007 ] <===Merge status
Local Fabric
-------------------------------------------------------------------------
Switch WWN IP Address
-------------------------------------------------------------------------
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
-------------------------------------------------------------------------
Switch WWN IP Address
-------------------------------------------------------------------------
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 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
Distributing Device Alias Services
Resolving Mode Mismatch

Cisco MDS 9000 Series Specifications

General

Category	Switch
Operating System	Cisco NX-OS
Ports	Varies by model
Protocols	Fibre Channel (FC), Fibre Channel over IP (FCIP), iSCSI
Redundancy	Redundant supervisors, power supplies, and fans
Management	Cisco Data Center Network Manager (DCNM), CLI, SNMP
Virtualization Support	VSANs (Virtual SANs)
Security Features	Fibre Channel Security Protocol (FC-SP)
Hot Swappable Components	power supplies, fans
Power Supply Options	AC and DC options available