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Chapter 3 Overview of Routing Between Virtual LANs

Designing Switched VLANs

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Cisco 1710 Security Router Software Configuration Guide

78-12696-01

Procedures for configuring routing between VLANs with IEEE 802.1Q

encapsulation are provided in the “Configuring Routing Between VLANs with

IEEE 802.1Q Encapsulation” chapter later in this publication.

VLAN Translation

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.

Designing Switched VLANs

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

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Cisco 1710 Spezifikationen Seite 56