This document explains how to configure interVLAN routing with Cisco Catalyst 3750/3560/3550 series switches. The document provides a sample configuration for interVLAN routing with a Catalyst 3550 series switch that runs enhanced multilaye...More
This document explains how to configure interVLAN routing with Cisco Catalyst 3750/3560/3550 series switches. The document provides a sample configuration for interVLAN routing with a Catalyst 3550 series switch that runs enhanced multilayer image (EMI) software in a typical network scenario. The document uses a Catalyst 2950 series switch and a Catalyst 2948G switch as Layer 2 (L2) closet switches that connect to the Catalyst 3550. The Catalyst 3550 configuration also has a default route for all traffic that goes to the Internet when the next hop points to a Cisco 7200VXR router. You can substitute a firewall or other routers for the Cisco 7200VXR router.
This document provides basic information on how to create VLANs on Catalyst switches that run Catalyst OS (CatOS) and Cisco IOS® System Software. The sample commands for each section use one Catalyst switch from each configuration section.
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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 accompl...
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VLAN Trunk Protocol (VTP) reduces administration in a switched network. When you configure a new VLAN on one VTP server, the VLAN is distributed through all switches in the domain. This reduces the need to configure the same VLAN everywhere...
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This document explains the step-by-step procedure to upgrade the software image on Cisco Catalyst 3550 series switches with use of the command-line interface (CLI).
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This document provides a sample configuration for inter-VLAN routing using two Catalyst 3750s series switches stacked together running EMI software in a typical network scenario. The document uses a Catalyst 2950 series switch and a Catalys...
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The Switched Port Analyzer (SPAN) feature, which is sometimes called port mirroring or port monitoring, selects network traffic for analysis by a network analyzer. The network analyzer can be a Cisco SwitchProbe device or other Remote Monit...
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