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Community Member

Bundling T1s with Multilink PPP

I have two remote offices that connect back to me through two P2P T1 lines (for a total of 3Mb). Currently the load balancing is done through ip load-sharing per-packet but we are looking into video conferencing so I can't use that anymore.

I want to configure multilink interfaces and bundle the serial ports and I have a question about the config on the hub router. I have configured a multilink interface before but I have never done two on the same router. Would this be the correct config?

conf t

interface multilink1

ip address x.x.x.x y.y.y.y

encapsulation ppp

ppp multilink

ppp multilink group 1

interface serial0/0/0:0

encapsulation ppp

ppp multilink

ppp multilink group 1

interface serial0/0/1:0

encapsulation ppp

ppp multilink

ppp multilink group 1

----------------------------------

interface multilink2

ip address x.x.x.x y.y.y.y

encapsulation ppp

ppp multilink

ppp multilink group 2

interface serial0/1/0:0

encapsulation ppp

ppp multilink

ppp multilink group 2

interface serial0/1/1:0

encapsulation ppp

ppp multilink

ppp multilink group 2

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Bundling T1s with Multilink PPP

The interface number is what your referencing the serial interface to. Mutlilink 1 or Mutlilink 2

Does my explanation make sense?

**Update: Sorry, I just double-checked and you do need it. Sorry for the mess up. Your config looks just fine.

4 REPLIES

Re: Bundling T1s with Multilink PPP

Under the multilink interface you don't need ppp multilink group 1, but other than that, it looks good.

Hope that helps.

Community Member

Re: Bundling T1s with Multilink PPP

Can you clarify that a bit? I thought the purpose of the 'ppp multilink group 1' statement was to define which multilink interface the multilink to which the group was tied. If I don't have that statement on those interfaces then why would I need it on the serial interfaces?

Re: Bundling T1s with Multilink PPP

The interface number is what your referencing the serial interface to. Mutlilink 1 or Mutlilink 2

Does my explanation make sense?

**Update: Sorry, I just double-checked and you do need it. Sorry for the mess up. Your config looks just fine.

Bronze

Re: Bundling T1s with Multilink PPP

I believe you will need multilink group x to associate with each link

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