Connecting two 1721's

[UNIX72]

Is there a way to connect two office locations with their own full T1 together. Both routers are 1721 series. If i config a static router to each location, would each respective network be able to access each other. Basically i need locationA to access location B with the server. I know you can do this with VPN, but too expensive. Any configs or links, Please advise. Thanks.

 

[UNIX72]

Some more info on both networks. Each 1721 for each location is doing nat for the their internal network and has 1 public address on their serial interface.

Location A to Location B
Public 64.x.x.x 67.x.x.x
INTERNAL
10.10.10.X 192.168.100.X

Thanks

 

[lgarner]

I'd suggest a GRE tunnel, which is like a VPN but without the encryption. I'm not sure, but I think most recent IOS versions support it. The configuration is something like:

! LocationA
interface Tunnel0
description LocA to LocB
bandwidth 1536
ip address 10.0.2.17 255.255.255.252
tunnel source Serial0
tunnel destination 67.x.x.x

! LocationB
interface Tunnel0
description LocB to LocA
bandwidth 1536
ip address 10.0.2.18 255.255.255.252
tunnel source Serial0
tunnel destination 64.x.x.x

I think that's all you need. The routers will see each other as connected neighbors, as if there was a point-point connection between them.

 

[UNIX72]

Thanks lgarner for the info. So with this config, a pc from location A should be able to connect to a server on location B, correct?

 

[Jynxx]

Do you mean that you have a private point to point T1 that is coming in to them, or is it an internet T1?

 

[UNIX72]

Hi Jynxx, good question, I think it is a internet T1, but not 100% sure. If so do i need different configurations, please advise, thanks.

 

[Jynxx]

Well, yeah. If it is internet, then you will need to set up VPN, if it is a simple PPP, then that is how it will need to be configured.

Configureations are completely different.

 

[UNIX72]

Thanks Jynxx for the update, so the only way to connect internet T1's together is thru VPN? Please advise

 

[Jynxx]

Internet T1's, yes.

You will need a version of code that supports VPN/IPsec to do it.

On the good side, you CAN do full OSPF or RIP announcements and routing with VPN tunnels, however.