Clearing 802.1Q-To-Isl Vlan Mappings; Deleting A Vlan - Cisco WS-C2948G-GE-TX Configuration Manual

Configuring VLANs on the Switch
To map an 802.1Q VLAN to an ISL VLAN, perform this task in privileged mode:
Task
Step 1
Map an 802.1Q VLAN to an ISL Ethernet VLAN.
The valid range for dot1q_vlan is from
1001–4095. The valid range for isl_vlan is from
1–1000.
Step 2 Verify the VLAN mapping.
This example shows how to map 802.1Q VLANs 2000, 3000, and 4000 to ISL VLANs 200, 300, and
400 and verify the configuration:
Console> (enable) set vlan mapping dot1q 2000 isl 200
802.1q vlan 2000 is existent in the mapping table
Console> (enable) set vlan mapping dot1q 3000 isl 300
Vlan mapping successful
Console> (enable) set vlan mapping dot1q 4000 isl 400
Vlan mapping successful
Console> (enable) show vlan mapping
802.1q vlan
------------------------------------------
2000
3000
4000
Console> (enable)

Clearing 802.1Q-to-ISL VLAN Mappings

To clear an 802.1Q-to-ISL VLAN mapping, perform this task in privileged mode:
Task
Step 1
Clear an 802.1Q-to-ISL VLAN mapping.
Step 2 Verify the VLAN mapping.
This example shows how to clear the VLAN mapping for 802.1Q VLAN 2000:
Console> (enable) clear vlan mapping dot1q 2000
Vlan 2000 mapping entry deleted
Console> (enable)
This example shows how to clear all 802.1Q-to-ISL VLAN mappings:
Console> (enable) clear vlan mapping dot1q all
All vlan mapping entries deleted
Console> (enable)

Deleting a VLAN

When you delete a VLAN in VTP server mode, the VLAN is removed from all switches in the VTP
domain. When you delete a VLAN in VTP transparent mode, the VLAN is deleted only on the current
switch. When you are on a VTP client, you can only delete a VLAN on the local switch.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
10-12
ISL vlan Effective
200 true
300 true
400 true
Chapter 10
Command
set vlan mapping dot1q dot1q_vlan isl isl_vlan
show vlan mapping
Command
clear vlan mapping dot1q {dot1q_vlan | all}
show vlan mapping
Configuring VLANs
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