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Link 2 LANS together across a T1

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Dec 25, 2004
2
US
Hi all,

I know this is supposed to be trivial/easy, but I have never done it before, so I am looking for assistance....

We have two locations, both currently accesing the internet by cable modem. We will be getting a T1 from Verizon between the two sites.

Ideally we would like to connect the two LANs so that it is totally transparent across the T1 - the subsidiary PCs are in the same network as the primary location.

Having just plugged routers into the cable or dsl modems in the past, I am not certain what equipment to acquire at both ends of the T1 to perform this function. Obviously cost is a strong element here.... is Cisco kit the most cost-effective and simple to set up?

I would appreciate any recommendations.

Thanks

Rich
 
I am not sure of the cost, but I think the cheapest solution will be one of the following two:

1)Cheap external CSU/DSU(such as an Adtran TSU ACE)
2)Cisco router configured as a Bridge.

1)CSU/DSU WIC for Cisco router(internal card)
2)Cisco router configured as a Bridge.
 
interface serial 0
bridge-group 1
interface ether 0
bridge-group 1

other end

interface serial 0
bridge-group 1
interface ether 0
bridge-group 1

This is not such a hot idea since all the broadcasts from the remote network will be crossing the slower T1 link and will reduce the overall bandwidth available. But it will work.

Make sure the CSU/DSU configuration having the clocking set correctly. IE, get clocking from line or set one side to clock the connection.

Good luck. I would route if i were you and then all you have to change is subnet masking. Scales much better too and offers QOS should you need it.

Lui3
CCNP,CCDA,A+/Net+
Cisco Wireless Specialization
 
oops

forgot

interface BVI 1
ip address x.x.x.x x.x.x.x



Lui3
CCNP,CCDA,A+/Net+
Cisco Wireless Specialization
 
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