Disabling A Trunk Port - Cisco WS-X6066-SLB-APC - Content Switching Module Software Manual

Configuring a Trunk Link
When you first configure a port as a trunk, entering the set trunk command always adds all VLANs
Note
to the allowed VLAN list for the trunk, even if you specify a VLAN range (any specified VLAN
range is ignored). To modify the allowed VLANs list, use a combination of the clear trunk and set
trunk commands to specify the allowed VLANs.
To define the allowed VLAN list for a trunk port, perform this task in privileged mode:
Task
Step 1 Remove VLANs from the allowed VLANs list for
a trunk.
Step 2 (Optional) Add specific VLANs to the allowed
VLANs list for a trunk.
Step 3 Verify the allowed VLAN list for the trunk.
This example shows how to define the allowed VLANs list to allow VLANs 1–100, VLANs 500–1005,
and VLAN 2500 on trunk port 1/1 and how to verify the allowed VLAN list for the trunk:
Console> (enable) clear trunk 1/1 101-499
Removing Vlan(s) 101-499 from allowed list.
Port 1/1 allowed vlans modified to 1-100,500-1005.
Console> (enable) set trunk 1/1 2500
Adding vlans 2500 to allowed list.
Port(s) 1/1 allowed vlans modified to 1-100,500-1005,2500.
Console> (enable) show trunk 1/1
Port
--------
1/1
Port
--------
1/1
Port
--------
1/1
Port
--------
1/1
Console> (enable)

Disabling a Trunk Port

To turn off trunking on a port, perform this task in privileged mode:
Task
Step 1 Turn off trunking on a port.
Step 2
Verify the trunking configuration.
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
5-8
Mode Encapsulation
----------- -------------
desirable isl
Vlans allowed on trunk
---------------------------------------------------------------------
1-100, 500-1005,2500
Vlans allowed and active in management domain
---------------------------------------------------------------------
1,521-524
Vlans in spanning tree forwarding state and not pruned
---------------------------------------------------------------------
1,521-524
Chapter 5
Command
clear trunk mod/port vlans
set trunk mod/port vlans
show trunk [mod/port]
Status Native vlan
------------ -----------
trunking 1
Command
set trunk mod/port off
show trunk [mod/port]
Configuring Ethernet VLAN Trunks
78-13315-02