Vlan Translation - Cisco 1710 Software Configuration Manual

Designing Switched VLANs

VLAN Translation

Designing Switched VLANs
Cisco 1710 Security Router Software Configuration Guide
3-6
Procedures for configuring routing between VLANs with IEEE 802.1Q
encapsulation are provided in the
IEEE 802.1Q Encapsulation"
VLAN translation refers to the ability of the Cisco IOS software to translate
between different virtual LANs or between VLAN and non-VLAN encapsulating
interfaces at Layer 2. Translation is typically used for selective inter-VLAN
switching of non-routable protocols and to extend a single VLAN topology across
hybrid switching environments. It is also possible to bridge VLANs on the main
interface; the VLAN encapsulating header is preserved. Topology changes in one
VLAN domain do not affect a different VLAN.
By the time you are ready to configure routing between VLANs, you will have
already defined them through the switches in your network. Issues related to
network design and VLAN definition should be addressed during your network
design. Refer to the Cisco Internetworking Design Guide and appropriate switch
documentation for information on these topics:
Sharing resources between VLANs
•
• Load balancing
Redundant links
•
Addressing
•
• Segmenting networks with VLANs
Routers and their role in switched networks
•
Chapter 3 Overview of Routing Between Virtual LANs
"Configuring Routing Between VLANs with
chapter later in this publication.
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