Re: (ASCEND) Ascend Max T1 and FR backup

[Peter Lalor <plalor@infoasis.com>]

>I use a pipeline 130 with both a T1 and a BRI to feed my max4004
>That way I not only have the automatic switchover to BRI for
>backup up but also  have all 4 t1/pri's on the 4004 available
>for incoming analog and ISDN dialback.

That is simpler and more reliable as far as the backup goes. However, 
the general consensus on the list seems to be that 40xxs are too 
processor-limited to handle all four T1/PRIs at once without 
performance suffering. Of course, Pipeline 130s aren't exactly held 
in high regard either, but I like 'em okay.

>Peter Lalor wrote:
>
>>  >From: "Tim Brown" <tim@sumter.net>
>>  >
>>  >Does anyone use ISDN or mulitlink analog as a backup for your T1 and Frame
>>  >Relay connections to you Maxen. We thought we could just do it through the
>>  >max, but our T1 and PRI dial-up trunks are provisioned in-bound only and
>>  >reject any outbound calls. We've have had problems with three different
>>  >backhaul circuits recently (all different telcos) and thought it might be
>>  >time to put some sort of low bandwidth backup (say 128K or so) in 
>>place as a
>>  >solution. An automatic backup would be ideal(i.e. all traffic on 
>>FR circuit,
>>  >FR circuit goes down, traffic starts moving on backup ISDN or Analog
>>  >line(s). Thanks in advance for any suggestions and/or comments.
>>
>>  Well, the first thing you'll need is some kind of ISDN line that you
>>  can actually place outbound calls on. If you can't get that turned on
>>  on your PRI, you could try a BRI, either on your Max or on some
>>  little router like a Pipeline.
>>
>>  I have had ISDN backup working with some success in the past, either
>>  with a T1 being backed up by a BRI, both connected to the same
>>  Pipeline 130, and also with a BRI plugged into a Pipeline 75 backing
>>  up a T1 plugged into a Max 4000.
>>
>>  The latter was a bit problematic for me, either with the link not
>>  coming up automatically or not dropping afterwards, but I think you
>>  should be able to get it going properly with some fiddling with route
>>  preferences.
>>
>>  When you decide how you're going to tackle it, tell the list and
>>  we'll try to help.
>>  --
>>
>  > Peter Lalor           Infoasis
>
>* Bob Bradlee      Lord High Fixer    Technologist and Consultant *
-- 

Peter Lalor           Infoasis
plalor@infoasis.com   http://www.infoasis.com/

"Where's my burrito?" -- Homer
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