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16-13
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-6965-03, Cisco MDS SAN-OS Release 2.x
Chapter 16 Inter-VSAN Routing Configuration
IVR Zones and IVR Zone Sets
Tip As of Cisco MDS SAN-OS Release 1.3(4a), only add IVR domains in the edge VSANs and not in transit
VSANs.
When you enable the IVR virtual domains, links may fail to come up due to overlapping virtual domain
identifiers. If so, temporarily withdraw the overlapping virtual domain from that VSAN.
Note Withdrawing an overlapping virtual domain from an IVR VSAN disrupts IVR traffic to and from that
domain.
To add IVR virtual domains using Fabric Manager, follow these steps:
Step 1 Select All VSANs > IVR from the Logical Domains pane. You see the IVR configuration in the
Information pane.
Step 2 Select the Action tab to display the existing IVR topology.
Step 3 Enter a comma-separated list of VSAN IDs in the Create Virtual Domain for VSANs column.
Step 4 Select the Apply Changes button from the Information pane to activate the IVR topology, or select the
Undo Changes button to cancel any changes you made.

IVR Zones and IVR Zone Sets

As part of the IVR configuration, you need to configure one or more IVR zone sets to enable
cross-VSAN communication. To achieve this result, you must specify each IVR zone as a set of (pWWN,
VSAN) entries. Like zones, several IVR zone sets can be configured to belong to an IVR zone. You can
define several IVR zone sets and activate only one of the defined IVR zone sets.
Note The same IVR zone set must be activated on all of the IVR-enabled switches.

IVR Zones Versus Zones

Table 16-1 identifies the key differences between IVR zones and zones.
Table 16-1 Key Differences Between IVR Zones and Zones
IVR Zones Zones
IVR zone membership is specified using the VSAN and
pWWN combination.
Zone membership is specified using pWWN,
fabric WWN, sWWN, or the AFID.
Default zone policy is always deny (not configurable). Default zone policy is deny (configurable).