Configuring Trunking
Step 1
switch# configure terminal
Enters configuration mode.
Step 2
switch(config)# interface fc1/1
Configures the specified interface.
Step 3
switch(config-if)# switchport trunk mode on
Enables (default) the trunk mode for the specified interface.
switch(config-if)# switchport trunk mode off
(Optional) Disables the trunk mode for the specified interface.
switch(config-if)# switchport trunk mode auto
(Optional) Configures the trunk mode to auto mode, which provides automatic sensing for the interface.
Configuring an Allowed-Active List of VSANs
To configure an allowed-active list of VSANs for an interface, perform these steps:
Step 1
switch# configure terminal
Enters configuration mode.
Step 2
switch(config)# interface fc1/1
Configures the specified interface.
Step 3
switch(config-if)# switchport trunk allowed vsan 2-4
Changes the allowed list for the specified VSANs.
Step 4
switch(config-if)# switchport trunk allowed vsan add 5
Expands the specified VSAN (5) to the new allowed list.
switch(config-if)# no switchport trunk allowed vsan 2-4
(Optional) Deletes VSANs 2, 3, and 4.
switch(config-if)# no switchport trunk allowed vsan add 5
(Optional) Deletes the expanded allowed list.
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
Configuring an Allowed-Active List of VSANs
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