Ascend Archive
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Re: (ASCEND) TNT 1.3A and OSPF

Hi Adi,

>We've had several customers, mostly with older TAs and Pipelines with older
>revisions of the firmware have a lot of trouble connecting, and if they manage
>that, getting any sort DNS fails if they connect with two channels. On
>Asif at Ascend's recommendation we upgraded to 1.3Ap2 as he assured us that
>putting another 5 for a total of 8 PRIs on that TNT would kill it unless we
>upgraded.

I've worked extensively with Atif. He really knows his stuff, in my experience.

I only have 4 T1s into my TNT right now, but that's about to exceed eight
(or become a T3), so that's good to know.

>It worked for about 3 hours -- then the TNT started dropping all the calls,
>when I reset it, it wouldn't see one of the PRIs on it's way back up.
>
>It's almost 11pm on this coast and I called Ascend:
>
>is this a "network down" situation? yes
>and you have a TNT? yes
>that's the big one right? yes
>let me page someone for you.
>
>I guess I should be happy that they were prepared to page someone.

Yes. They definitely seem to want to help TNT owners. They went to the
length of dispatching a telco expert to diagnose what turned out to be a
misconfigured T1 line on the part of my telco.

>In any case, if you have any hints on managing a TNT doing only ISDN running
>OSPF, I would very much appreciate what you have to say.

This is difficult to say, although I've been through the mill with it.

We have a TNT and a single Max 4000. They've been through various software
versions in trying to get it all working, and currently my setup is
completely stable.

The TNT is 1.3A. The 4000 is 5.0Ap16, tik.m40. 4000 has a T1 and a PRI. TNT
has two T1s (1 Frame, 1 point-to-point) and two PRIs.

The problem is, neither I nor Ascend are sure why it stopped failing (the
4000 was losing it's OSPF routes and/or restarting itself). The TNT has
been better, but also had some glitches.

Make sure OSPF isn't running on uneccessary interfaces (I had it
inadvertantly set to run on the Ethernet interfaces, which was
inappropriate).

The only thing I can see that changed is that we do subnet-routed accounts
(>75% of our connections will be ISDN) and we had inadvertantly allocated
the same subnet to two clients. One dialed into the TNT, one the 4000. You
can imagine OSPF's confusion. ;-)

I also did nvr and fclear on the 4000. That has helped at times (make sure
to save your config with fsave).

I really don't know if that was what fixed it, but as I say we are
_completely_ stable now. God, I'm afraid to say that.

>Since Ascend seems incapable of any sort of quality control, it seems like
>TNT owners have to talk amongst themselves. Most of the others I've spoken
>to seem to be using TNTs for mostly analog modem calls...
>
>Now for some sleep to gain the strength to deal with Ascend in the morning.
>
>Thanks,
>Adi
>

Not us. As I say, we're mostly ISDN. We do also do modems.

As for Ascend's quality control, I'm not sure what to say. IMO, Maxen are
the most complex piece of equipment I've ever seen. I'm amazed they work at
all! Add to that the almost total incompetance of the telcos I've dealt
with and _I'm_ sorry for _Ascend_!

>In article <v0310280ab0042de89997@[206.40.74.6]>, you wrote:
>>>On Tue, 29 Jul 1997, Neil J. McRae wrote:
>>>
>>>> [I've just upgraded to 1.3A whheee!]
>>>
>>>1.3 ? Got that in production? I guess your not doing OSPF eh?
>>>
>>>Jason Nealis
>>
>>I'm running OSPF under 1.3A in a production environment and I have no
>>problems with it. It's certainly better than earlier revs, when I certainly
>>_did_ have OSPF problems. They could have been caused by the Max 4000 on
>>the other end, 'though...
>>
>>In any case, OSPF is fine for me under 1.3A. This surprised an Ascend
>>engineer, but it's true. :-)
>>
>>Peter Lalor

Peter Lalor
Infoasis
plalor@infoasis.com
http://www.infoasis.com/
415-459-7991 x102
415-459-7992 fax


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