Continuing this sordid tale...

>From: Peter Lalor <plalor at infoasis.com>
>Date: Mon, 7 Aug 2000 09:38:26 -0700
>
>A follow-up to my post of a couple weeks ago:
>
>>From: Peter Lalor <plalor at infoasis.com>
>>Date: Wed, 26 Jul 2000 15:18:52 -0700
>>
>>We have a DSL Terminator 100 that's acting up in new and creative
>>ways. Whenever we make any change that affects the routing table,
>>such as adding, removing, enabling or disabling a connection profile
>>or route, the unit sends many routes to wanidle0 and the unit must be
>>reset.
>>
>>As we also have several DSL Max 20s (and other Ascend gear) that
>>don't exhibit this problem, we figured that we must have some error
>>in a profile somewhere, and we did in fact find several profiles with
>>errors, most notably some profiles that inadvertently had BIR enabled
>>(the tech had copied a bridged account to make a routed account). We
>>also found some typos in IP addresses and subnet masks.
>>
>>We fixed all that--and I mean _everything_--but the box is still very
>>unhappy. I even found a route from a typo that had been corrected
>  >that would recur after every reset, even though the route appears
>  >nowhere in the config or RADIUS. I eventually copied an empty profile
>  >over the corrected profile and re-entered it from scratch, which
>>finally removed that route but did not fix the problem of routes
>>going to wanidle0.
>>
>>My guess at this point is that the unit needs an fclear, nvramclear
>  >and the configuration reloaded.
>
>Doing fclear, nvramclear and reloading the config made no difference.
>
>From: Peter Lalor <plalor at infoasis.com>
>Date: Mon, 7 Aug 2000 11:18:46 -0700
>
>Well, I've opened a ticket with Ascend. Try not to laugh. Or cry.

Ascend's shocking, unpredictable (not!) response:

>          Suggest that you >fclear , >nvramclear the DSLT100 and
>re-configure the unit from scratch manually.  I know you have done this
>step "We finally did an fclear, nvramclear and trestored the
>configuration, but the problem persists. The unit is essentially
>unusable as we cannot touch it without a restart". It maybe be quite
>possible that the configuration settings itself may have been corrupted
>and causing this problem. Please give us an update on this issue.

As the config is merely a text file, I fail to see the difference 
between restoring it and typing it in by hand, except that I'll 
probably add some typos if I do it by hand. Several people here have 
been over the config and the RADIUS profiles with a fine-tooth comb 
and we can find nothing wrong whatsoever.

Question: does anyone have any reason to believe that there is a 
problem with Ascend's trestore or Restore Cfg routines?

Next, here's some examples of what happens to the routing table. In 
each section, the first line are Before, the second line(s) are 
After. To recap, we're doing ATM profiles using interface-based 
routing.

1. The client-side Ethernet address does not normally appear in the 
routing table (Suppress Host Routes), but goes to wanidle:
192.168.84.0/26     192.168.85.105      wan    SG     120    7
192.168.84.64/26    192.168.85.85       wan    SG     120    7

192.168.84.0/26     192.168.85.105      wan    SG     120    7
192.168.84.1/32     192.168.85.105      wanidleSG     120    7
192.168.84.64/26    192.168.85.85       wan    SG     120    7
192.168.84.65/32    192.168.85.85       wanidleSG     120    7

2. The local interface address becomes Multipath:
192.168.85.18/32    -                   local  rT       0    0

192.168.85.18/32    -                   local  CM       0    0
192.168.85.18/32    -                   local  rTM      0    0

3. Some /25 RIP routes come and go (IN GOOD!):
192.168.0.0/16        192.168.85.1      wan    RGT    100   11
192.168.26.0/28       192.168.85.1      wan    RGT    100    4
192.168.26.32/28      192.168.85.1      wan    RGT    100    6
192.168.26.112/29     192.168.85.1      wan    RGT    100    6
192.168.26.128/27     192.168.85.1      wan    RGT    100    4

192.168.0.0/16        192.168.85.1      wan    RGT    100   11
192.168.26.0/25       192.168.85.1      wan    RGT    100    4
192.168.26.0/28       192.168.85.1      wan    RGT    100    4
192.168.26.32/28      192.168.85.1      wan    RGT    100    6
192.168.26.112/29     192.168.85.1      wan    RGT    100    6
192.168.26.128/25     192.168.85.1      wan    RGT    100    4
192.168.26.128/27     192.168.85.1      wan    RGT    100    6

4. Some RIP routes disappear:
192.168.26.224/27     192.168.85.1      wan    RGT    100    6
192.168.58.0/24       192.168.85.1      wan    RGT    100    4
192.168.58.0/29       192.168.85.1      wan    RGT    100    4

192.168.26.224/27     192.168.85.1      wan    RGT    100    6
192.168.58.0/29       192.168.85.1      wan    RGT    100    4

To recap, we're doing ATM profiles using interface-based routing.

We notice that BIR profiles continue to operate normally, as do some 
local profiles. Apparently, RADIUS is an issue, as our other Max 20s 
(same hardware) do not use RADIUS for authentication and are working 
fine. i may have to move all profiles locally, but that's a dead end.

I'm about to configure a Max 20 to mock the whole damn thing up using 
FR T1 cross-connected to itself (using VRouters) to try to recreate 
the problem, as I don't happen to have a spare ATM DS-3 to test with 
and Ascend, well...

Does any of this ring any bells for anyone?

Rapidly graying...
-- 

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

"Where's my burrito?" -- Homer
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