What is router-on-a-stick inter VLAN routing?
“Router-on-a-stick” is a type of router configuration in which you are able to use a single physical interface to route traffic between multiple VLANs. The router interface is configured as a trunk link and is connected to a trunk switch port. The switch will handle the Inter-VLAN routing decisions too.
Why do we use router-on-a-stick for inter VLAN communication?
It is a method of inter-VLAN (virtual local area networks) routing where one router is connected to a switch via a single cable. The router has physical connections to the broadcast domains where one or more VLANs require the need for routing between them.
How to configure router on a stick inter-VLAN routing?
Router-on-a-Stick Inter-VLAN Routing (4.2) In this section, you configure router-on-a-stick inter-VLAN routing. Router-on-a-Stick Scenario (4.2.1) In the previous section, three ways to create inter-VLAN routing were listed, and legacy inter-VLAN routing was detailed. This section details how to configure router-on-a-stick inter-VLAN routing.
What kind of router to use for intervlan routing?
We will create a trunk that will carry traffic from two VLANs (VLAN1 and VLAN2) across a single link between a Catalyst 3500 and a Cisco 2600 router. We are using the Cisco 2600 router to do the Inter-VLAN routing between VLAN1 and VLAN2.
How to configure intervlan routing and ISL / 802.1Q?
This document provides sample configurations on InterSwitch Link (ISL) and 802.1Q trunking between a Catalyst 3512-XL switch and a Cisco 2600 router; the results of each command are displayed as they are executed.
How to configure 802.1Q trunking between router and switch?
While configuring 802.1Q trunking, it is very important to keep in mind that the native VLAN must be configured the same on each side of the trunk link. It is a common mistake not to match the native VLANs while configuring 802.1Q trunking between the router and the switch.