Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
7
Configuring Routing Between VLANs with
IEEE 802.1Q Encapsulation
This chapter describes the required and optional tasks for configuring routing between VLANs with
IEEE 802.1Q encapsulation. For a complete description of VLAN commands used in this chapter, refer
to the “Cisco IOS Switching Commands” chapter in the Cisco IOS Switching Services Command
Reference. For documentation of other commands that appear in this chapter, you can use the command
reference master index or search online.
The IEEE 802.1Q protocol is used to interconnect multiple switches and routers and for defining VLAN
topologies. IEEE 802.1Q support is currently available for Fast Ethernet interfaces.
IEEE 802.1Q Encapsulation Configuration Task List
You can configure routing between any number of VLANs in your network. This section documents the
configuration tasks for each protocol supported with IEEE 802.1Q encapsulation. The basic process is
the same, regardless of the protocol being routed. It involves:
• Enabling the protocol on the router.
• Enabling the protocol on the interface.
• Defining the encapsulation format as IEEE 802.1Q.
• Customizing the protocol according to the requirements for your environment.
The configuration processes documented in this chapter include the following:
• Configuring AppleTalk Routing over IEEE 802.1Q
• Configuring IP Routing over IEEE 802.1Q
• Configuring IPX Routing over IEEE 802.1Q
Configuring AppleTalk Routing over IEEE 802.1Q
AppleTalk can be routed over virtual LAN (VLAN) subinterfaces using the IEEE 802.1Q VLAN
encapsulation protocol. AppleTalk Routing provides full-feature Cisco IOS software AppleTalk support
on a per-VLAN basis, allowing standard AppleTalk capabilities to be configured on VLANs.