Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 338
Fabric segmentation and zoning, Fabric OS Command Reference
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11 Zone merging • Merging two fabrics Both fabrics have identical zones and configurations enabled, including the default zone mode. The two fabrics will join to make one larger fabric with the same zone configuration across the newly created fabric. If the two fabrics have different zone configurations, they will not be merged. If the two fabrics cannot join, the ISL between the switches will segment. • Merge conflicts When a merge conflict is present, a merge will not take place and the ISL will segment. Use the switchShow or errDump commands to obtain additional information about possible merge conflicts, because many non-zone related configuration parameters can cause conflicts. See the Fabric OS Command Reference for detailed information about these commands. If the fabrics have different zone configuration data, the system attempts to merge the two sets of zone configuration data. If the zones cannot merge, the ISL will be segmented. A merge is not possible if any of the following conditions exist: - Configuration mismatch: Zoning is enabled in both fabrics and the zone configurations that are enabled are different in each fabric. - Type mismatch: The name of a zone object in one fabric is used for a different type of zone object in the other fabric. - Content mismatch: The definition of a zone object in one fabric is different from the definition of zone object with the same name in the other fabric. - Zone Database Size: If the zone database size exceeds the maximum limit of another switch. NOTE If the zoneset members on two switches are not listed in the same order, the configuration is considered a mismatch, resulting in the switches being segmented from the fabric. For example: cfg1 = z1; z2 is different from cfg1 = z2; z1, even though members of the configuration are the same. If zoneset members on two switches have the same names defined in the configuration, make sure zoneset members are listed in the same order. Fabric segmentation and zoning If the connections between two fabrics are no longer available, the fabric segments into two separate fabrics. Each new fabric retains the same zone configuration. If the connections between two fabrics are replaced and no changes have been made to the zone configuration in either of the two fabrics, then the two fabrics merge back into one single fabric. If any changes that cause a conflict have been made to either zone configuration, then the fabrics might segment. 338 Fabric OS Administrator's Guide 53-1002745-02
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