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Distributed Multilink Point to Point Protocol (MLPPP) on 7500 routers

TRYING TO MAKE 4 T1s APPEAR AS 1 6meg CIRCUIT. I am trying to setup MLPPP between a 7507 and a 7513. Both are running IOS rsp-jsv-mz.121-14.bin, and both have a PA-MC-8T1 interface card. I am trying to setup a connection using 4 of the T1 ports. The T1's are supplied out of a DS3 we own between the two offices that each 7500 router resides in. I had no problem setting up the T1 interfaces and their corresponding serial interface. I created the multilink interface and added the serial interfaces to the group. When I display all the parts involved they show to be up and the bandwidth of the multilink interface is the total of all the member serials. The problem I am having as that I can not ping the multilink interface. I do a show IP routes and I can see the interface IP in the route table. I can not ping the far end or the near end. Both routers are set up the same and both exhibit the same problem. I have tested the T1 connections and they appear to be good. The T1 lines are setup as ESF and B8ZS with clock from the DS3. I compared the configuration I setup to the example shown on the Cisco documentation and they are the same. I am looking for some help the making this work.

Thank you

Kevin Welch

McLane Company

2 REPLIES

Re: Distributed Multilink Point to Point Protocol (MLPPP) on 750

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center (http://www.cisco.com/tac) or speak with a TAC engineer. You can open a TAC case online at http://www.cisco.com/tac/caseopen

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.

New Member

Re: Distributed Multilink Point to Point Protocol (MLPPP) on 750

could u paste your config here ??? it would be easy tp point out

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