CHAPTER 9
Configuring 802.1Q VLAN Interfaces
This module describes the configuration and management of 802.1Q VLAN interfaces on the Cisco NCS
6000 Series Router.
The IEEE 802.1Q specification establishes a standard method for tagging Ethernet frames with VLAN
membership information, and defines the operation of VLAN bridges that permit the definition, operation,
and administration of VLAN topologies within a bridged LAN infrastructure.
The 802.1Q standard is intended to address the problem of how to divide large networks into smaller parts
so broadcast and multicast traffic does not use more bandwidth than necessary. The standard also helps provide
a higher level of security between segments of internal networks.
Feature History for Configuring 802.1Q VLAN Interfaces
ModificationRelease
This feature was introduced.Release 5.0.0
• Prerequisites for Configuring 802.1Q VLAN Interfaces, on page 111
• Information About Configuring 802.1Q VLAN Interfaces, on page 112
• How to Configure 802.1Q VLAN Interfaces, on page 113
• , on page 118
• Configuration Examples for VLAN Interfaces, on page 119
• Additional References, on page 121
Prerequisites for Configuring 802.1Q VLAN Interfaces
You must be in a user group associated with a task group that includes the proper task IDs. The command
reference guides include the task IDs required for each command. If you suspect user group assignment is
preventing you from using a command, contact your AAA administrator for assistance.
Before configuring 802.1Q VLAN interfaces, be sure that the following conditions are met:
• You must have configured a a 10-Gigabit Ethernet interface , a Fast Ethernet interface, or an Ethernet
Bundle.
Interface and Hardware Component Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
111
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