HP Brocade 8/12c Brocade Fabric OS Troubleshooting and Diagnostics Guide v6.2. - Page 53
Reconciling a domain ID conflict
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Segmented fabrics 3 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 fabric. 3. Compare the fabricShow output from the two fabrics. Note the number of domain ID conflicts; 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. 4. Choose the fabric on which to change the duplicate domain ID; connect to the conflicting switch in that fabric. 5. Enter the switchDisable command. 6. Enter the switchEnable command. 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. 7. Repeat step 4 through step 6 if additional switches have conflicting domain IDs. Fabric OS Troubleshooting and Diagnostics Guide 37 53-1001187-01