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Short Description: Complete these steps to configure a switch to perform interVLAN routing. .... Configuring Layer 3 Interfaces on Catalyst 6500 Switches Running Cisco IOS ...

Content Inside: How To Configure InterVLAN Routing on Layer 3 Switches Document ID: 41860 Introduction Prerequisites Requirements Components Used Conventions Configure InterVLAN Routing Task Step-by-Step Instructions Verify Troubleshoot Troubleshooting Procedure NetPro Discussion Forums - Featured Conversations Related Information Introduction VLANs divide broadcast domains in a LAN environment. Whenever hosts in one VLAN need to communicate with hosts in another VLAN, the traffic must be routed between them. This is known as inter-VLAN routing. On Catalyst switches it is accomplished by creating Layer 3 interfaces (Switch virtual interfaces (SVI) ). This document provides the configuration and troubleshooting steps applicable to this capability. Note: This document uses a Catalyst 3550 as an example. However, the concepts can also be applied to other Layer 3 switches that run Cisco IOS (for example, Catalyst 3560, 3750, Catalyst 4500/4000 Series with Sup II+ or later, or Catalyst 6500/6000 Series that run Cisco IOS System software). Prerequisites Requirements Catalyst switch models 3560, 3750, Catalyst 4500/4000 Series with Sup II+ or later, or Catalyst 6500/6000 Series that run Cisco IOS system software support basic InterVLAN routing features in all their supported software versions. Before you attempt this configuration on a 3550 series switch, ensure that you meet these prerequisites: InterVLAN routing on the Catalyst 3550 has certain software requirements to support interVLAN routing on the switch. See this table to determine whether your switch can support interVLAN routing. InterVLAN Image Type and Version Routing Capability Enhanced Multilayer Image (EMI) - All Versions Yes

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