Cisco WS-C4003 Software Guide - Page 183
Disabling a Trunk Port, Example VLAN Trunk Configurations
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Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports Example VLAN Trunk Configurations This example shows how to define the allowed VLANs list for trunk port 1/1 to allow VLANs 1-100, VLAN 250, and VLANs 500-1005, 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 1/1 250 Adding vlans 250 to allowed list. Port(s) 1/1 allowed vlans modified to 1-100,250,500-1005. Console> (enable) show trunk 1/1 Port Mode Encapsulation Status Native vlan 1/1 desirable dot1q trunking 1 Port Vlans allowed on trunk 1/1 1-100,250,500-1005 Port Vlans allowed and active in management domain 1/1 1,521-524 Port Vlans in spanning tree forwarding state and not pruned 1/1 1,521-524 Console> (enable) Disabling a Trunk Port To explicitly turn off trunking on a port, perform this task in privileged mode: Step 1 Step 2 Task Turn off trunking on a port. Verify the trunking configuration. Command set trunk mod_num/port_num off show trunk [mod_num/port_num] To return a port to the default trunk type and mode for that port type, perform this task in privileged mode: Step 1 Step 2 Task Return the port to the default trunking type and mode for that port type. Verify the trunking configuration. Command clear trunk mod_num/port_num show trunk [mod_num/port_num] Example VLAN Trunk Configurations This section contains example VLAN trunk configurations: • 802.1Q Trunk over Gigabit EtherChannel Link Example, page 11-8 • Load-Sharing VLAN Traffic over Parallel Trunks Example, page 11-11 • 802.1Q Nonegotiate Trunk Configuration Example, page 11-18 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 11-7