Cisco Catalyst 4500 Series Administration Guide

CHAPTER
29-1
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
29
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 29-2
• Configuring 802.1Q Tunneling, page 29-3
• About VLAN Mapping, page 29-7
• Configuring VLAN Mapping, page 29-9
• About Layer 2 Protocol Tunneling, page 29-13
• Configuring Layer 2 Protocol Tunneling, page 29-15
• Monitoring and Maintaining Tunneling Status, page 29-18
Note For complete syntax and usage information for the switch commands used in this chapter, see 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 a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the
Cisco IOS library. See the Cisco IOS Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/ps6350/index.html

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E