Trunking Configuration Guidelines - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

Trunking Configuration Guidelines

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 .
Trunking Configuration Guidelines
If you misconfigure VSAN configurations across E ports, you could face consequences such as merging
the traffic in two VSANs (thus causing both VSANs to mismatch). The trunking protocol validates the
VSAN interfaces at both ends of an ISL to avoid VSANs merging (see
Figure 12-3
In this example, the trunking protocol detects potential VSAN merging and isolates the ports involved.
The trunking protocol cannot detect merging of VSANs when a third-party switch is placed in between
two Cisco MDS 9000 Family switches (see
Figure 12-4
Switch 1
VSANs 2 and 3 get effectively merged with overlapping entries in the name server and the zone
applications. The Cisco MDS 9000 Fabric Manager helps detect such topologies. Refer to the Cisco MDS
9000 Family Fabric Manager Configuration Guide.
Cisco MDS 9000 Family Configuration Guide
12-6
VSAN Mismatch
Switch 1
Isolated
E port
VSAN 2
VSAN mismatch
Third-Party Switch VSAN Mismatch
Third-party switches
VSAN 2
E port
Switch 2
Switch 2
E port
VSAN 3
Figure 12-4).
VSAN 3
E port
Switch 3
Chapter 12 Configuring Trunking
Figure 12-3).
OL-6973-03, Cisco MDS SAN-OS Release 2.x