Cisco MDS 9000 Series Configuration Manual page 226

Configuring Trunking
Trunking Misconfiguration Examples
Figure 8: VSAN Mismatch
The trunking protocol detects potential VSAN merging and isolates the ports involved (see Figure 8: VSAN
Mismatch, on page 208).
The trunking protocol cannot detect merging of VSANs when a third-party switch is placed in between two
Cisco MDS 9000 Series Multilayer Switches (see Figure 9: Third-Party Switch VSAN Mismatch, on page
208).
Figure 9: Third-Party Switch VSAN Mismatch
VSAN 2 and VSAN 3 are effectively merged with overlapping entries in the name server and the zone
applications. Cisco DCNM-SAN helps detect such topologies.
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
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