How to use a ATM E1 card on a 2610

[fofucho]

Hi ALL,

What i need is a config help on how to use my ATM 4E1 interface card.
I've been able to upgrade the IOS to one that sees the card and it's signalling the lights corretly.
But i don't know how do i do to use it fractionary. I don't have a full E1. I have 4 links to our ISP that are 64 Kbps and one 256 Kbps.
My goal is to ask the phone company to give me a full E1 fractionary and set the channels inside it so i don't have to worry about buying WICs anymore. I just set the tunnel and that's it.
Is it possible?
Thanks in advance.

Roberto.

 

[krr]

There is no "fractionary" or "channels" with ATM. Those terms apply to ISDN PRI and G.703, which also use E1 interface standard.

If you get an ATM E1 link from your ISP, he can set a guaranteed bandwidth to anything less than the link speed, which btw. is 2Mbit for an E1. The connection will be through a Permanent Virtual Circuit (PVC). The PVC number will be assigned by the ISP.

The config would look something like:
[tt]
interface ATM1/0/0
no ip address
!
interface ATM1/0/0.1 point-to-point
ip address 10.1.1.2 255.255.255.252
pvc 1/101
vbr-nrt 1131 566 500
encapsulation aal5snap
[/tt]

The second number after vbr-nrt is your Committed Information Rate (CIR) plus ATM overhead in kbps. In my example: 512kbps * 53/48 = 565,33 rounded up to 566. The first number is the Peak Information Rate which the ISP may grant you (yielding 1Mbps here).

Cheers *Rob

 

[fofucho]

Hi,

Thanks for the explanation, i'll call then and do it a try.

Thanks again.

Roberto.