Disconnections

Michael Krause (krause@en.com)
Fri, 6 Dec 1996 01:23:04 -0500 (EST)

I seem to have a difficult-to-trace problem concerning users getting
disconnected from our ISP. I am running RADIUS 2.0, ComOS 3.3.3, all on
Portmaster 2e-30s running with four types of modems:
USR Sportster 28.8 (non 33.6)
Microcom QX Deskporte R Modem, firmware rev 3.3
Motorola 3400 Lifestyle
USR MP/16 + MP/8

Has anyone else had problems with random disconnects amongst customers with
that above equipment? Everything is in mass quantities (totalling about 400
modems), but is very well cooled and racked in an organized manner.

I did a disconnect acct-terminate-cause analysis on all of my 20+
portmasters and found that the lost-carrier cause usually is about 1/3rd of
all reasons for disconnect. Is this normal amongst most ISPs? I then
look at my disconnect causes on ISDN lines, and find that instead of 1/3
lost-carrier is at about 1/8th of all causes. ISDN lines obviously are
usually quite a bit more reliable than analog.

Any ideas, opinions?

Can you please share your analysises ....

Use the following to display your disconnect causes:
cat detail | grep Acct-Terminate-Cause | sort | uniq -c