Load sharing 2 t1's with a Cisco 2500

[coman99]

I would like to share 2 t1's between one Cisco 2500 router so that I may have 3 meg instead of 1.5 I have 4 different IP sets to to bring into this one router. Does anyone know how I can do this or where to start. So basically I want my 4 DSlams to go through one switch and then into one router and out to 2 t1's

 

[toetag]

Have you considered using BGP? It's been awhile since i configured ours and I had alot of help from those more knowledgable, but do a little research on it.

"The only desert to an Irishman is an empty glass".

 

[JOAMON]

??
The two T1 lines on the 2500 conect to ??

 

[Ru55ell]

You may need to use CEF (Cisco Express Forwarding) and loadbalance per packet. This may not be function of the 2500. I know we do it using 2600s.

 

[KiscoKid]

What kind of routing is in place on this router? static, bgp, ospf etc?

If static, simply create 2 default route (via each T1) and ensure they have same AD. This will load-balance.

If not static, let me know and I can advise further.

 

[coman99]

Thank you all for your input. I believe the routing is static. I have four dslams and between the four they are sharing 5 different IP sets (each customer has their own static IP). My dslams to go to a switch then to enet 0 on the router. Enet 0 is configured with the 5 ip sets. The serial port(now) ties to the CSU and then to the t1, the t1 travels to another router that interfaces the at&t backbone. I am wondering if there is a way to plug into serial 1 on this router to be used with enet 0's config. I just don't have a whole lot of experience with these routers besides basic things. What do you mean by 2 default routes. Once again thank you for your feedback.