Difference between revisions of "VLAN"

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==Introduction==
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Virtual LANs give you the ability to sub-divide a LAN. Linux can accept VLAN tagged traffic and presents each VID as a different network interface (eth0.100 for VID 100)
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==Getting Started==
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Previously Arch Linux used vconfig to setup VLANs. This had been superseded by the ip command.<br>
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Make sure you have iproute2 installed<br>
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# pacman -Ss iproute2
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==Configuring VLANs==
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===Adding a VLAN===
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To add a VLAN use a command with this syntax:
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ip link add link INTERFACE name INTERFACE.VID type vlan id VID
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Example:
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ip link add link eth0 name eth0.100 type vlan id 100
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Run ifconfig -a to confirm that it has been created. This interface behaves like a normal interface. All traffic routed to it will go through the master interface (in this example, eth0) but with a VLAN tag. Only VLAN aware devices can accept them if configured correctly else the traffic is dropped.

Revision as of 08:34, 27 May 2011

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Summary help replacing me
VLAN
Related
Network

Introduction

Virtual LANs give you the ability to sub-divide a LAN. Linux can accept VLAN tagged traffic and presents each VID as a different network interface (eth0.100 for VID 100)

Getting Started

Previously Arch Linux used vconfig to setup VLANs. This had been superseded by the ip command.
Make sure you have iproute2 installed

# pacman -Ss iproute2

Configuring VLANs

Adding a VLAN

To add a VLAN use a command with this syntax:

ip link add link INTERFACE name INTERFACE.VID type vlan id VID

Example:

ip link add link eth0 name eth0.100 type vlan id 100

Run ifconfig -a to confirm that it has been created. This interface behaves like a normal interface. All traffic routed to it will go through the master interface (in this example, eth0) but with a VLAN tag. Only VLAN aware devices can accept them if configured correctly else the traffic is dropped.