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Cisco 2620 Configuration with two T-1's

brianclay
brianclay asked
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Last Modified: 2010-04-17
I need a little help with a (at least I think it is) complicated problem - I have two T-1's that are "terminating" into a Cisco 2620 router.  Each LAN port on the 2620 then goes into a port on a PIX 515.  A third ethernet port on the PIX is connected to a switch serving two LAN's.  (Each LAN has a DSL modem bridging the LAN to the "WAN" that the PIX plugs into.)  Unfortunately, the PIX can only have one default route; and the default route is the only way I can get the PIX to pass traffic to one of the T-1's (to get to the internet).

What I want to do is have the PIX (without performing NAT) pass traffic to the 2620 and then have the 2620 Router send it to one of the two T-1's based on the source of the request...and then NAT the address on the way out the door.

Has anybody tried this before?  

The Network IP's are as follows -

T-1's = 68.152.249.x

PIX Addresses = 68.208.63.x (from Cisco ports to PIX) & 10.10.10.100 (from PIX LAN to switch).

Two Networks = LAN's of 192.168.102.x & 192.168.125.x - their "WAN" address are 10.10.10.105 & 10.10.10.205
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Top Expert 2004

Commented:
Can you provide a diagram of your network?  I'm having a little difficulty wrapping my mind around it.

Author

Commented:
2 T-1's -----> Cisco 2620 -------> PIX 515 (each ethernet port on the 2620 has a corresponding port on the PIX)

PIX 515 (third port - true "inside" interface) inside IP is 10.10.10.100 -----> Catalyst Switch


Local Area Network #1: LAN IP 192.168.125.x ---> DSL router.  The DSL Router has WAN address of 10.10.10.105 & Gateway of 10.10.10.100 (PIX)

Local Area Network #2: LAN IP 192.168.100.x ---> DSL router.  The DSL Router has WAN address of 10.10.10.205 & Gateway of 10.10.10.100 (PIX)
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