Aggregation of E1 interface ?

Michel DUBOIS wrote in news:11ecp82snls65c7 @corp.supernews.com:

Hi Michel

You could look at IMA (Inverse Multiplexing of ATM) and use 8 of the E1s as a single interface, however it requires an IMA interface in each end.

Hopes this might be an idea...

Cheers, Lars

Thanks !!! I will have a look at it ... but unfortunatly I will have to find a solution without additional equipment :-( Cheers, Michel

Multilink PPP might be worth looking at:

Marco.

load balancing over different speed links tends to be self defeating (a single IMA with 8 channels looks like a 16 Mbps pipe).

better to get 2 IMA cards each end and put 5 E1s on each, then load balance the resulting 2 IMA pipes.

it also gives you room to expand to 16 E1s.

if you have the E1s presented from a mux at your site, you may be able to get them presented as an Ethernet pipe - 10 Mbps Ethernet WAN using 5 VC-12s (the logical pipes used for E1 across SDH) is becoming very common in the UK, and elsewhere around Europe.

Or maybe 100 Mbps Ethernet physical interfaces made up from 2 to 100 VC-12s to give you a "soft" bandwidth change.........

However - the rule of thumb is that when you get to 4 to 8 E1s it is as cheap here (UK) to buy an E3 - soyou might want to ask if the supplier can give you 100 Mbps fractional Ethernet or an E3 pipe.