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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 .
Manually Configuring the IVR Topology
You can have up to 64 VSANs (or 128 VSANs as of Cisco MDS SAN-OS Release 2.1(1a)) in an IVR
topology. Specify the IVR topology using the following information:
•
•
•
Note
Figure 18-2
The use of a single AFID does not allow for VSANs that are logically and physically separate but have
Note
the same VSAN number in an IVR topology.
You can only configure a maximum of 128 IVR-enabled switches and 64 distinct VSANs (or 128 distinct
Caution
VSANs as of Cisco MDS SAN-OS Release 2.1(1a)) in an IVR topology (see the
Guidelines" section on page
Configuring an IVR Topology Database
Use the show wwn switch command to obtain the switch WWNs of the IVR-enabled switches.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
The switch WWNs of the IVR-enabled switches.
A minimum of two VSANs to which the IVR-enabled switch belongs.
The autonomous fabric ID (AFID), which distinguishes two VSANs that are logically and physically
separate, but have the same VSAN number. Cisco MDS SAN-OS Releases 2.0(2b) supports only one
default AFID (AFID 1) and thus does not support non-unique VSAN IDs in the network. As of Cisco
MDS SAN-OS Release 2.1(1a), you can specify up to 64 AFIDs. See
If two VSANs in an IVR topology have the same VSAN ID and different AFIDs, they count as
two VSANs for the 128-VSAN limit for IVR.
Example IVR Topology with Non-Unique VSAN IDs Using AFIDs
VSAN 10
AF ID 2
VSAN 5
IVR-Enabled
MDS switch
Transit VSAN
18-29).
Figure
VSAN 10
AF ID 5
IVR-Enabled
MDS switch
Cisco MDS 9000 Family Configuration Guide
Configuring IVR Topologies
18-2.
"Database Merge
18-11
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