11-22
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
78-15908-01
Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports
Example VLAN Trunk Configurations
Port Vlans allowed on trunk
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4/1 1-1005, 1025-4094
Port Vlans allowed and active in management domain
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4/1 1-3,1003,1005
Port Vlans in spanning tree forwarding state and not pruned
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4/1 1005
Switch 2> (enable) show spantree 1
VLAN 1
Spanning tree enabled
Spanning tree type ieee
Designated Root 00-60-09-79-c3-00
Designated Root Priority 32768
Designated Root Cost 0
Designated Root Port 1/0
Root Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
Bridge ID MAC ADDR 00-60-09-79-c3-00
Bridge ID Priority 32768
Bridge Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
Port Vlan Port-State Cost Priority Fast-Start Group-method
--------- ---- ------------- ----- -------- ---------- ------------
1/1 1 not-connected 4 32 disabled
1/2 1 not-connected 4 32 disabled
4/1 1 forwarding 100 32 disabled
4/2 1 not-connected 100 32 disabled
<...output truncated...>
Switch 2> (enable)
The output shows that port 4/1 is an 802.1Q trunk port, that its status is “trunking,” and that the port-state
is “forwarding.”
Step 6 Verify connectivity across the trunk using the ping command.
Switch 1> (enable) ping switch_2
switch_2 is alive
Switch 1> (enable)
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