Re: (PM) Modem Code

Mike Tancsa (mike@sentex.net)
Sun, 04 Apr 1999 09:35:47 -0500

At 01:43 AM 4/4/99 , Nick Seraphin wrote:
>> normal 89.63% 21251/23710
>> "User Request - Call Circuit Closed" 8.95% 2121/23710
>> "Lost Carrier" 0.82% 194/23710
>> "User Error - PPP NCP Active to Request" 0.59% 140/23710
>> "Service Unavailable - Failed to detect V.42 remote" 0.01% 2/23710
>> "User Error - LAPM negotiation timeout" 0.00% 1/23710
>> "Port Error - Exceeded LAPM retransmission limit" 0.00% 1/23710
>
>What is "normal" considered? I checked 24 hours of stats for 1 of our
>PM3's and saw this:

I consider User Request - Admin Quit,User Request - Normal LAPM
Disconnect,Admin Reset,Host Request,Idle Timeout, Session Timeout,Login
Timeout, and User Request - PPP Term Req all to be 'normal'. I also exlude
any SLIP users, as they will always show up as Lost-Carrier.
>Is there a script to produce these results, or did you write it yourself?
>I'm good with perl, but I don't want to reinvent the wheel. :-)

It was written by Chris Adams <cadams@ro.com>. Its the same as the one
that summaries the syslog stats, but with one change if
(/LE-Terminate-Detail =(.+)$/) so as to parse the detail file instead.

>If this only counts calls *after* authentication, I'd like to know if
>there is a way to check for errors whether or not the call authenticates.
>I'd say about 1/3 of our users say they can't connect on the first try...
>and about 5% can't connect to the PM3's at all, and yet they connect just
>fine to our old 33.6k analog Microcom ISPorte modems.

Syslog will give you some indication of this, but those results will be
polluted with other info. Still, I found it useful to look at especially
when going from different versions of ComOS. For example, when I went from
3.8 to a beta to 3.8.2, there was a difference of a few percentage points
that registered in the syslog stats as well as the RADIUS stats.

>I'm running 3.8 now. I tried 3.8.2 and it was much much much worse.

Interesting. It was pretty well the same for me save a few percentage
points. Are you running PRIs or CT1s? It was difficult at the time to
compare, because 3.8.2 came out just around xmas where a lot more people
all of a sudden started trying to connect with v.90, so I expected the
problems to increase. But sampling those who already had v.90, there was a
slight improvement and it also addressed the latency issue with some HCF
chipsets that was bugging our gamers.

---Mike
**********************************************************************
Mike Tancsa, Network Admin * mike@sentex.net
Sentex Communications Corp, * http://www.sentex.net/mike
Cambridge, Ontario * 01.519.651.3400
Canada *
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