Reconciling A Domain Id Conflict - Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Troubleshooting Manual

Reconciling a domain ID conflict

If a domain ID conflict appears, the conflict is only reported at the point where the two fabrics are
physically connected. However, there may be several conflicting domain IDs, which appear as soon
as the initial conflict is resolved.
Typically, the fabric automatically resolves domain conflicts during fabric merges or builds unless
Insistent Domain ID (IDID) is configured. If IDID is enabled, switches that cannot be programmed
with a unique domain ID are segmented out. Check each switch that has IDID configured and make
sure their domain IDs are unique within the configuration.
Repeat the following procedure until all domain ID conflicts are resolved.
1. Enter the fabricShow command on a switch from one of the fabrics.
2. In a separate Telnet window, enter the fabricShow command on a switch from the second
3. Compare the fabricShow output from the two fabrics. Note the number of domain ID conflicts;
4. Choose the fabric on which to change the duplicate domain ID; connect to the conflicting
5. Enter the switchDisable command.
6. Enter the switchEnable command.
7.
Fabric OS Troubleshooting and Diagnostics Guide
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fabric.
there may be several duplicate domain IDs that must be changed. Determine which switches
have domain overlap and change the domain IDs for each of those switches.
switch in that fabric.
This will enable the joining switch to obtain a new domain ID as part of the process of coming
online. The fabric principal switch will allocate the next available domain ID to the new switch
during this process.
Repeat step 4 through step 6 if additional switches have conflicting domain IDs.
Segmented fabrics
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