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Merging fabrics and zoning
If you join two fabrics, the active zone sets from the two fabrics attempt to merge. The fabrics can
consist of a single switch module or many switches already connected together. The switch modules
in the two fabrics attempt to create a new active zone set containing the union of the active zone set
of each fabric. The propagation of zoning information affects only the active zone set, not the
configured zone sets.
Zone merge failure
If a zone merge is unsuccessful, the interswitch links between the fabrics will isolate because of a
zone merge failure, which generates an alarm log entry. The reason for the E_Port isolation can also
be determined by viewing the port
information. See the "Port Information Data window" on page 98 and the "Show command" on page
38 (Port keyword).
A zone merge will fail if the two active zone sets have member zones with identical names that differ
in content or type. For example, consider Fabric A and Fabric B, each with a zone in its active zone
set named "ZS1." Fabric A "ZS1" contains a member specified by Domain ID 1 and Port 1; Fabric B
"ZS1" contains a member specified by Domain ID 1 and Port 2. In this case, the merge fails, and the
interswitch links between the fabrics are isolated.
Zone merge failure recovery
When a zone merge failure occurs, the conflict that caused the failure must be resolved. You can
correct a failure due to a zone conflict by deactivating one of the active zone sets or editing the
conflicting zones so that their membership is the same. You can deactivate the active zone set on one
switch module if the active zone set on the other switch accurately defines your zoning needs. If not,
you must edit the zone memberships and reactivate the zone sets. For information about adding and
removing zone members, see "Managing zones" on page 91. To permit the fabrics to join, reset the
ports that were isolated. See "Resetting a port" on page 117.
Using the Edit Zoning window
Use the Edit Zoning window to edit the zoning database for a specific switch module. To edit the
zoning database, in the Faceplate window, click Zone → Edit Zoning. The Edit Zoning window
opens.
NOTE
You can make changes only to an active zone set, which is stored in flash (nonvolatile)
memory and retained after setting a switch module.
Intel® Server Switch Module SBCEFCSW
87
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