Configuring Vlan Mapping - Cisco Catalyst 4500 Series Software Configuration Manual

Configuring VLAN Mapping

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Configuring VLAN Mapping
The following procedures show how to configure each type of VLAN mapping on trunk ports. To verify
your configuration, enter either the show interfaces interface-id vlan mapping or the
show vlan mapping privileged EXEC command. See the
Status" section on page 30-23
commands in this section, see the Catalyst 4500 Series Switch Software Command Reference for this
release.
The following VLAN mapping types are discussed:
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One-to-One Mapping
To configure one-to-one VLAN mapping to map a customer VLAN ID to a service-provider VLAN ID,
perform this task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# interface
interface-id
Step 3
Switch(config-if)# switchport mode
trunk
Step 4
Switch(config-if)# switchport vlan
mapping vlan-id translated-id
Step 5
Switch# end
Step 6
Switch# show vlan mapping
Step 7
Switch# copy running-config
startup-config
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
30-10
Chapter 30
switchport trunk native vlan 40
switchport mode trunk
switchport vlan mapping 10 20
spanning-tree bpdufilter enable
end
If you need to merge CVLAN and SVLAN spanning tree topology, you do not need to configure
spanning-tree bpdufilter enable.
To ensure consistent operation, do not use a native VLAN for translation.
One-to-One Mapping, page 30-10
Traditional Q-in-Q on a Trunk Port, page 30-11
Selective Q-in-Q on a Trunk Port, page 30-12
Purpose
Enters global configuration mode.
Enters interface configuration mode for the interface connected to the
service-provider network. You can enter a physical interface or an
EtherChannel port channel.
Configures the interface as a trunk port.
Enters the VLAN IDs to be mapped:
Note
Returns to privileged EXEC mode.
Verifies the configuration.
(Optional) Saves your entries in the configuration file.
Configuring 802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling
for the syntax of these commands. For more information about all
vlan-id—the customer VLAN ID (C-VLAN) entering the switch
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from the customer network. The range is from 1 to 4094.
translated-id—the assigned service-provider VLAN ID (S-VLAN).
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The range is from 1 to 4094.
Packets with unconfigured vlan_ids are dropped.
"Monitoring and Maintaining Tunneling