Re: Ethernet Wan - remote office

<toms1616@xxxxxxxxxxxxx> wrote in message
news:1138559388.778387.159920@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> I need to help trying understand something and I wish someone can help
> me. We have a remote office and we are thinking about using an ethernet
> wan service for connecting the 2 remote office together.. The ethernet
> service is another solution like a T1 or frame except the bandwith for
> greater.. My question is this..
>
> When the ethernet service company installes the wan they give you a
> RJ45 connector where you can connect this right into your switch. So
> Site A plugs the RJ45 into the switch and Site B plugs the RJ45 into
> there switch.. Now the 2 are connected via etherent. Here is my
> problem.. Site A has a subnet of 192.168.169.0/255.255.255.0 . Site B
> has a subnet of 192.168.0.0/255.255.255.0.. how can they talk to each
> other if they are connected right into the switch.. Is it a VLAN thing
> on the switch.. Can this even work?

you need to route between the 2 subnets. Easiest way is probably to put a
layer 3 switch at 1 or both ends of the WAN link, and route on the ports
used for the WAN service.
>
> If the above does not work then do I need to plug the RJ45 into a
> router or firewall to direct he traffic?.. If I need to buy a router
> can I just place it inside the networks ?What do I need to do to make
> this work..

layer 3 switches are much cheaper than routers per Mbps of thruput if
everything is Ethernet.

Also, in your case the switch can also do any internal routing, or provide
extra ports - unless the router is there anyway for other things, and has
the spare port / capacity.

A lot of modern stackable switches are layer 3 - in cisco speak you need a
minimum of a Catalyst 3560, other suppliers such as Foundry, Nortel, HP have
equivalent boxes.
>
>
> tk
--
Regards

stephen_hope@xxxxxxxxxxxx - replace xyz with ntl


.

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