VPN - can I use a separate T1?

I have a vpn that links a branch office to the main office. VPN
tunnel is accomplished with Cisco routers linking Windows 2003 servers.

About half the traffic at the main office is VPN traffic (using
Solarsoft Network Engineer tools). I would like to add WAN
accelerators, but they have limited bandwidth (1MB), so they accelerate
the VPN, but they throttle other traffic at times since they have
limited bandwidth. So, I don't want to run ALL traffic through the WAN
accelerators, just VPN traffic.

So, is it possible to install a separate router at the main office
connecting to a separate T1 for other (voip, web, etc) traffic?

it depends on Cisco VPN settings. This case study may help,

Routing One router goes to the corporation email server and another one goes to the Internet. Symptoms: you have one router connecting to the corporation for email ...
www.chicagotech.net/routing.htm


Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Matt Dwyer" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
I have a vpn that links a branch office to the main office. VPN
tunnel is accomplished with Cisco routers linking Windows 2003 servers.

About half the traffic at the main office is VPN traffic (using
Solarsoft Network Engineer tools). I would like to add WAN
accelerators, but they have limited bandwidth (1MB), so they accelerate
the VPN, but they throttle other traffic at times since they have
limited bandwidth. So, I don't want to run ALL traffic through the WAN
accelerators, just VPN traffic.

So, is it possible to install a separate router at the main office
connecting to a separate T1 for other (voip, web, etc) traffic?

Yes, but you will need to modify the routing on the network. You will
need to set the new router as the default gateway for all your LAN machines.
Then you will need to add routing info to this router to bounce the branch
traffic to the VPN router.

eg Local subnet 192.168.0.0/24 branch subnet 192.168.4.0/24

One gateway
Internet gateway
192.168.0.1
|
LAN machines
192.168.0.x dg 192.168.0.1

Two gateways
Internet gateway
192.168.0.254 (static route 192.168.4.0 255.255.255.0 192.168.0.1)
|
Lan machines
192.168.0.x dg 192.168.0.254
|
192.168.0.1
VPN router.

Matt Dwyer wrote:
> I have a vpn that links a branch office to the main office. VPN
> tunnel is accomplished with Cisco routers linking Windows 2003
> servers.
> About half the traffic at the main office is VPN traffic (using
> Solarsoft Network Engineer tools). I would like to add WAN
> accelerators, but they have limited bandwidth (1MB), so they
> accelerate the VPN, but they throttle other traffic at times since
> they have limited bandwidth. So, I don't want to run ALL traffic
> through the WAN accelerators, just VPN traffic.
>
> So, is it possible to install a separate router at the main office
> connecting to a separate T1 for other (voip, web, etc) traffic?