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Community Member

PPP Multilink

Hi All

We have an E1 line between two sites which will shortly be connecting to 2 PBX's at either end. In each pbx will be a 4 port isdn card which I will connect into a 4 port isdn card in the routers at either end. This will give me 512k between the two sites. I was just wondering on the best way to aggregate the isdn channels, should I use PPP multilink and if so, are there any performance differences over a standard leased line. Is there a better way to aggregate the four 128k channels. Any word of advice would be greatly appreciated.


Cisco Employee

Re: PPP Multilink

Leased line and Channelized have their own benefits..In your case if you need always "512K" between two sites regardless if you are using it or not for a whole day..You can go for leased line.

Channelized line will give you benefits of DDR (dial on demand routing). You can use the mins number of chans between the sites always connected and add in as the traffic increase. You can use the free channels for remote access etc..

There should not be any preformance issues if you use one or the other.

Community Member

Re: PPP Multilink

Thanks for your reply.

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