Re: (ASCEND) Ascend Max T1 and FR backup

[Peter Lalor <plalor@infoasis.com>]

>From: "Tim Brown" <tim@sumter.net>
>
>>When you decide how you're going to tackle it, tell the list and
>>we'll try to help.
>I was thinking about using BRI and connecting an ISDN modem to the WAN port
>on the Maxen. Is there an ISDN modem with a V.35 connector? Though at one of
>the POP's I'm already using the WAN port--on a 4048 I have CT1 going to the
>two Max T1 ports and a CSU/DSU connected to the WAN port to do the FR. Is
>there a BRI card for a Max 4xxx? Is it expensive?

There is a BIR card for Maxen. It's undoubtedly expensive, but you 
might be able to find a used one by asking the list nicely. I'd guess 
that the BRI card might be somewhat easier to get working for your 
purposes than a TA.

I don't personally know of a TA with a v.35 adapter, but I'll mention 
in passing that Netopia makes a DSL "CSU" with one for this sort of 
thing. Now _there's_ a nice backup solution, DSL availability gods 
willing.

>  >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
>On the P130 that you have both T1 and BRI, how do you have the routing
>setup? Is it setup so that the BRI line is dialed and link established when
>the T1 drops?

Lucent actually has a paper on this on http://www.esight.com/ that 
explains exactly how it works and how to do it, but yes, it's fully 
automatic.

>- -----Original Message-----
>From: Peter Lalor <plalor@infoasis.com>
>To: ascend-users@max.bungi.com <ascend-users@max.bungi.com>
>Date: Sunday, April 30, 2000 1:51 PM
>Subject: Re: (ASCEND) Ascend Max T1 and FR backup
>
>
>>>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
-- 

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

"Where's my burrito?" -- Homer
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