Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 35 Configuring VSAN Trunking
Configuring VSAN Trunking
Figure 35-4 Default Allowed-Active VSAN Configuration
You can configure a selected set of VSANs (from the allowed-active list) to control access to the VSANs
specified in a trunking ISL.
Using Figure 35-4 as an example, you can configure the list of allowed VSANs on a per-interface basis
(see Figure 35-5). For example, if VSANs 2 and 4 are removed from the allowed VSAN list of ISLs
connecting to switch 1, the operational allowed list of VSANs for each ISL would be as follows:
• The ISL between switch 1 and switch 2 includes VSAN 1 and VSAN 3.
• The ISL between switch 2 and switch 3 includes VSAN 1 and VSAN 2.
• The ISL between switch 3 and switch 1 includes VSAN 1, 2, and 5.
Consequently, VSAN 2 can only be routed from switch 1 through switch 3 to switch 2.
V
SANs1, 2, and 3 are o
perational.
VSANs 1, 2, 4,
5areoperationa
l.
VSANs 1 and 2 are operational.
Switch 3
VSAN1
VSAN2
VSAN4
VSAN5
Switch 1
VSAN1
VSAN2
VSAN3
VSAN4
VSAN5
Switch 2
VSAN1
VSAN2
VSAN3
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