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In this video, I'm going to show you how to configure a router on a stick or an external router that's

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connected to allow you to switch that performs the inter VLAN routing to allow devices in one VLAN

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to communicate with devices in another VLAN. The topology that we're going to build consists of two VPCS

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devices.

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PC 1 will configure with an IP address of 10.1.2.1 and the default gateway will be

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router 1 with 10.1.2.254. In VLAN 2 PC 2 will be configured with an IP address of 10.1.

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3.1/24 default gateways router 1 IP address 10 1 2 3 2 5 4 in line 3.

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So this router will use an 802.1q trunk to the switch and do the inter VLAN routing so that

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PC 1 can ping PC 2.

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In other words, we are inter VLAN routing between VLAN 2 and VLAN 3. 

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So I've started a new project I'll drag a router into the workspace and grab an ethernet switch as  

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well as 2 VPCS devices. 

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Now when you start configure the switch and delete all current interfaces they are all going to be

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in VLAN 1 and are going to be configured as access ports.

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So we want to start with a new switch configuration support 1 is going to be an access port in VLAN

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2, port 2 is going to be an access port in VLAN 3, port 3 is going to be a trunk port and

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we're gonna configure the native VLAN as VLAN 1.

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So that's our switch configuration port 1 is in VLAN 2, port 2 is in VLAN 3 they are access ports,

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port 3 is gonna be an 802.1q trunk.

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I can now configure the devices and connect them to the switch. So fast

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Ethernet00 on our router will be configured for inter VLAN routing.

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So this host will configure as 10.1.1.1/24 in VLAN 2

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this host we will configure as 3.1 in VLAN 3

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and the router

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will be 254 in the relevant VLANs, I'll also configure VLAN one as the native VLAN on fast

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Ethernet 00 on the router.

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Now you can obviously make the topology more pretty for lack of a better word.

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I'm not going to do that for the sake of time.

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So start the devices up

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and open console ports to the devices.