Cisco Catalyst 3750 Software Configuration Manual page 259

Configuring IEEE 802.1Q 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 are required to maintain the VLAN and Layer 2 protocol
configurations of each customer without impacting the traffic of other customers. The
Catalyst 3750 Metro switch supports 802.1Q tunneling and Layer 2 protocol tunneling, as well as VLAN
mapping (VLAN-ID translation).
Note For complete syntax and usage information for the commands used in this chapter, refer to the command
reference for this release.
This chapter contains these sections:
• Understanding 802.1Q Tunneling, page 13-2
Configuring 802.1Q Tunneling, page 13-4
•
• Configuring VLAN Mapping, page 13-7
Understanding Layer 2 Protocol Tunneling, page 13-10
•
• Configuring Layer 2 Protocol Tunneling, page 13-12
Monitoring and Maintaining Tunneling and Mapping Status, page 13-16
•
For information about VPNs used with multiprotocol label switching (MPLS), see
Note
"Configuring MPLS and EoMPLS."
78-15870-01
C H A P T E R
Catalyst 3750 Metro Switch Software Configuration Guide
13
Chapter 30,
13-1