Cisco Catalyst 4500 Series Configuration Manual page 673

Configuring 802.1Q Tunneling, VLAN Mapping,
and Layer 2 Protocol Tunneling
Virtual private networks (VPNs) provide enterprise-scale connectivity on a shared infrastructure, often
Ethernet-based, with the same security, prioritization, reliability, and manageability requirements of
private networks. Tunneling is a feature designed for service providers who carry traffic of multiple
customers across their networks and who are required to maintain the VLAN and Layer 2 protocol
configurations of each customer without impacting the traffic of other customers. This chapter describes
how to configure Catalyst 4500 series switch 802.1Q, Layer 2 protocol tunneling, and VLAN mapping
(or VLAN ID translation) on the Catalyst 4500 series switch.
This chapter contains these sections:
About 802.1Q Tunneling, page 27-2
•
Configuring 802.1Q Tunneling, page 27-3
•
About VLAN Mapping, page 27-7
•
Configuring VLAN Mapping, page 27-9
•
About Layer 2 Protocol Tunneling, page 27-13
•
Configuring Layer 2 Protocol Tunneling, page 27-15
•
• Monitoring and Maintaining Tunneling Status, page 27-18
Note For complete syntax and usage information for the switch commands used in this chapter, first look at
the Cisco Catalyst 4500 Series Switch Command Reference and related publications at this location:
http://www.cisco.com/en/US/products//hw/switches/ps4324/index.html
If the command is not found in the Catalyst 4500 Series Switch Command Reference, it will be found in
the larger Cisco IOS library. Refer to the Cisco IOS Command Reference and related publications at this
location:
http://www.cisco.com/en/US/products/ps6350/index.html
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C H A P T E R
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
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