Mapping 802.1Q Vlans To Isl Vlans - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Chapter 12 Configuring VLANs
This example shows how to map VLAN 1649 to VLAN 755 Gigabit Ethernet port 5/2:
Router# configure terminal
Router(config)# interface gigabitethernet 5/2
Router(config-if)# switchport vlan mapping 1649 755
Router(config-if)# end
Router#
This example shows how to verify the configuration:
Router# show interface gigabitethernet 5/2 vlan mapping
State: enabled
Original VLAN Translated VLAN
------------- ---------------
1649
Enabling VLAN Translation on Other Ports in a Port Group
To enable VLAN translation on other ports in a port group, perform this task:
Command
Step 1
Router(config)# interface type
Step 2
Router(config-if)# switchport vlan mapping enable
Router(config-if)# no switchport vlan mapping
enable
Step 3
Router(config-if)# end
Step 4
Router# show interface type
mapping
1. type = ethernet, fastethernet, gigabitethernet, or tengigabitethernet
This example shows how to enable VLAN translation on a port:
Router# configure terminal
Router(config)# interface gigabitethernet 5/2
Router(config-if)# switchport vlan mapping enable
Router(config-if)# end
Router#

Mapping 802.1Q VLANs to ISL VLANs

The valid range of user-configurable ISL VLANs is 1 through 1001 and 1006 through 4094. The valid
range of VLANs specified in the IEEE 802.1Q standard is 1 to 4094. You can map 802.1Q VLAN
numbers to ISL VLAN numbers.
802.1Q VLANs in the range 1 through 1001 and 1006 through 4094 are automatically mapped to the
corresponding ISL VLAN. 802.1Q VLAN numbers corresponding to reserved VLAN numbers must be
mapped to an ISL VLAN in order to be recognized and forwarded by Cisco network devices.
These restrictions apply when mapping 802.1Q VLANs to ISL VLANs:
•
•
•
OL-11439-03
755
1
slot/port
1
slot/port vlan
You can configure up to eight 802.1Q-to-ISL VLAN mappings on the Catalyst 6500 series switch.
You can only map 802.1Q VLANs to Ethernet-type ISL VLANs.
Do not enter the native VLAN of any 802.1Q trunk in the mapping table.
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
Purpose
Selects the LAN port to configure.
Enables VLAN translation.
Disables VLAN translation.
Exits configuration mode.
Verifies the VLAN mapping.
Configuring VLANs
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