i would actually also have both f0/1 interfaces connected to a switch too (6513). each f0/1 and f0/0 would be on different modules. say module 12 & 13 of the switch so if it blows up everything still works. i thought about reusing my f0/0 but i would like to have dual physical routes to the internal network just for the sake of physical redundancy as well as a way to load balance. currently i am using RIP. i would like for each router to use both of its T1s + a route to the other router to load balance more equally across all of our bandwidth. i do like the suggestion of rfc 1918 though.

Would recomend you swith to a dynamic routing protocol like ospf or EIGRP. Use ospf if you want to include your ASA in the OSPF process. If not use EIGRP.

You could also use route maps to control the traffic. Our setup multi-links to load balance your T1's.

If your 6513 is behind your firewall I would recomend getting a couple smaller switches to attach your routers and firewall. Always good practice to have physical seperation from external and internal networks.

Hope this helps,

Chad

Please rate if this helps!

the 6513 is behind the asa's and also has the fw service module. i would like to keep the asa in the routing process but i could use rip or ospf for that. i could also enable eigrp for the routers to be aware of each other. i forget which one has the lower admin cost. i think it might be eigrp so that would be used instead of any routers learned from the rip process. to simplify things i only showed one asa. but i really have two and both have CSM modules. i don't think i'm familiar with multi-links for the t1s. could you explain?

Take a look at the links below.

http://www.cisco.com/en/US/products/hw/modules/ps2033/products_white_paper09186a0080091d4b.shtml

http://www.cisco.com/en/US/customer/products/ps6350/products_configuration_guide_chapter09186a00804a40f9.html

Thanks,

Chad

i'm sort of limited to ospf or rip for the asa. but i could enable eigrp for the routers only since that is primarily where my concern is. the asa's will do per-destination load balancing anyways and there is no way around that. but it would be nice if i could split the traffic from one router to another and actually use all 4. i know a few different ways i could accomplish this but i'm just looking for some advice and input to find the 'best' way. thanks so far for your help!