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Advertising Vlans across WAN link

I was wondering; is it possible to advertise Vlans (i.e. 1-4) from one LAN to another LAN across a WAN link (i.e. 2 routers connected by a T1 line). If so, design wise is it something that should be avoided? Lastly, what is the best way to go about configuring the routers and layer 2 switches so that vlans in LAN 1 could also be configurable on the switches in LAN 2 and vice versa?

Thanks for the help.

Thanks

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New Member

Re: Advertising Vlans across WAN link

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