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13-1
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
13
Troubleshooting IVR
This chapter describes how to troubleshoot and resolve inter-VSAN routing (IVR) configuration issues
in the Cisco MDS 9000 Family of multilayer directors and fabric switches. It includes the following
sections:
• Overview, page 13-1
• Limitations and Restrictions, page 13-2
• Initial Troubleshooting Checklist, page 13-3
• IVR Issues, page 13-6
• Troubleshooting the IVR Wizard, page 13-15
Overview
IVR allows resources to be shared across VSANs without compromising other VSAN benefits.
Troubleshooting IVR involves checking the configuration of domain IDs, VSANs, border switches, and
zone sets. Configuration problems with IVR can prevent devices from communicating properly.
Prior to Cisco MDS SAN-OS Release 2.1(1a), IVR required unique domain IDs for all switches in the
fabric. As of Cisco MDS SAN-OS Release 2.1(1a), you can enable IVR Network Address Translation
(NAT) to allow non-unique domain IDs. This feature simplifies the deployment of IVR in an existing
fabric where non-unique domain IDs might be present.
Note By default, IVR-NAT is not enabled.
Configuration Guidelines
This section provides guidelines for configuring components that can affect IVR, and includes the
following topics:
• Transit VSANs, page 13-2
• Border Switches, page 13-2
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