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Chapter 18
Configuring Inter-VSAN Routing
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
IVR Features
IVR supports the following features:
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IVR Terminology
The following IVR-related terms are used in this chapter:
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OL-6973-03, Cisco MDS SAN-OS Release 2.x
Accesses resources across VSANs without compromising other VSAN benefits.
Transports data traffic between specific initiators and targets on different VSANs without merging
VSANs into a single logical fabric.
Shares valuable resources (like tape libraries) across VSANs without compromise.
Provides efficient business continuity or disaster recovery solutions when used in conjunction with
FCIP.
Is in compliance with Fibre Channel standards.
Incorporates third-party switches, however, IVR-enabled VSANs may have to be configured in one
of the interop modes.
Native VSAN—The VSAN to which an end device logs on is the native VSAN for that end device.
Current VSAN—The VSAN currently being configured for IVR.
Inter-VSAN zone (IVZ)—A set of end devices that are allowed to communicate across VSANs
within their interconnected SAN fabric. This definition is based on their port world wide names
(pWWNs) and their native VSAN associations. You can configure up to 200 IVZs and 2000 IVZ
members on the switches in the network. As of Cisco MDS SAN-OS Release 2.1(1a), you can
configure up to 2000 IVZs and 10,000 IVZ members on the switches in the network.
Inter-VSAN zone sets (IVZS)—One or more IVZs make up an IVZS. You can configure up to 32
IVZSs on any switch in the Cisco MDS 9000 Family. Only one IVZS can be active at any time.
IVR path—An IVR path is a set of switches and Inter-Switch Links through which a frame from an
end device in one VSAN can reach another end device in another VSAN. Multiple paths can exist
between two end devices.
IVR-enabled switch—A switch on which the IVR feature is enabled.
Edge VSAN—A VSAN that initiates (source edge-VSAN) or terminates (destination edge-VSAN)
an IVR path. Edge VSANs can be adjacent to each other or they can be connected by one or more
transit VSANs. In
Figure
18-1, VSANs 1, 2, and 3 are edge VSANs.
Note
An edge VSAN for one IVR path can be a transit VSAN for another IVR path.
Transit VSAN—A VSAN that exists along an IVR path from a source edge VSAN to the destination
edge VSAN. In
Figure
18-1, VSAN 4 is a transit VSAN.
Note
When the source and destination edge VSANs are adjacent to each other, then a transit
VSAN is not required between them.
Cisco MDS 9000 Family Configuration Guide
IVR Terminology
18-3
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