From: brs@cs.brown.edu (Brian Stormont)
Subject: PPP hung on a SPARC
Organization: Dept. of Computer Science, Brown University
Distribution: comp
Date: Thu, 20 Aug 1992 17:46:11 GMT


I was curious if anyone might know what would cause ppp to hang after working
"successfully" for about a minute or two.

I had ppp working fine between two Sun IPCs using telebet t1000 modems at 9600.
I then install ppp on an SLC to take home. The installation seemed to work ok,
however after I establish a valid (or what I think is valid) ppp connection,
a minute or two later, everything hangs (from a ppp point of view).

I enabled the kernel messages. Here they are:

Aug 20 10:46:01 paris vmunix: ppp_async0: opening
Aug 20 10:46:01 paris vmunix: ppp_if0: open
Aug 20 10:46:01 paris vmunix: ppp: Pii->flags 0x9
Aug 20 10:46:01 paris vmunix: ppp_async: SIFASYNCMAP ffffffff
Aug 20 10:46:01 paris vmunix: ppp: Pii->flags 0x9
Aug 20 10:46:01 paris vmunix: ppp_if: SIFCOMPPROT 0
Aug 20 10:46:01 paris vmunix: ppp_async: SIFCOMPPROT 0
Aug 20 10:46:01 paris vmunix: ppp: Pii->flags 0x9
Aug 20 10:46:01 paris vmunix: ppp_if: SIFCOMPAC 0
Aug 20 10:46:01 paris vmunix: ppp_async: SIFCOMPAC 0
Aug 20 10:46:01 paris vmunix: ppp: Pii->flags 0x9
Aug 20 10:46:03 paris vmunix: ppp: unknown protocol 0xc021
Aug 20 10:46:03 paris vmunix: ppp: unknown protocol 0xc021
Aug 20 10:46:03 paris vmunix: ppp_async: SIFASYNCMAP 0
Aug 20 10:46:03 paris vmunix: ppp: Pii->flags 0x9
Aug 20 10:46:03 paris vmunix: ppp_if: SIFCOMPPROT 1
Aug 20 10:46:03 paris vmunix: ppp_async: SIFCOMPPROT 1
Aug 20 10:46:03 paris vmunix: ppp: Pii->flags 0xd
Aug 20 10:46:03 paris vmunix: ppp_if: SIFCOMPAC 1
Aug 20 10:46:03 paris vmunix: ppp_async: SIFCOMPAC 1
Aug 20 10:46:03 paris vmunix: ppp: Pii->flags 0xf
Aug 20 10:46:06 paris vmunix: ppp: unknown protocol 0xc021
Aug 20 10:46:06 paris vmunix: ppp_async: SIFASYNCMAP ffffffff
Aug 20 10:46:06 paris vmunix: ppp: Pii->flags 0xf
Aug 20 10:46:06 paris vmunix: ppp_if: SIFCOMPPROT 0
Aug 20 10:46:06 paris vmunix: ppp_async: SIFCOMPPROT 0
Aug 20 10:46:06 paris vmunix: ppp: Pii->flags 0xb
Aug 20 10:46:06 paris vmunix: ppp_if: SIFCOMPAC 0
Aug 20 10:46:06 paris vmunix: ppp_async: SIFCOMPAC 0
Aug 20 10:46:06 paris vmunix: ppp: Pii->flags 0x9
Aug 20 10:46:08 paris vmunix: ppp: unknown protocol 0xc021
Aug 20 10:46:08 paris vmunix: ppp: unknown protocol 0x8021
Aug 20 10:46:08 paris vmunix: ppp_async: SIFASYNCMAP 0
Aug 20 10:46:08 paris vmunix: ppp: Pii->flags 0x9
Aug 20 10:46:08 paris vmunix: ppp_if: SIFCOMPPROT 1
Aug 20 10:46:08 paris vmunix: ppp_async: SIFCOMPPROT 1
Aug 20 10:46:08 paris vmunix: ppp: Pii->flags 0xd
Aug 20 10:46:08 paris vmunix: ppp_if: SIFCOMPAC 1
Aug 20 10:46:08 paris vmunix: ppp_async: SIFCOMPAC 1
Aug 20 10:46:08 paris vmunix: ppp: Pii->flags 0xf
Aug 20 10:46:09 paris vmunix: ppp: unknown protocol 0x8021
Aug 20 10:46:10 paris last message repeated 2 times
Aug 20 10:46:10 paris vmunix: ppp_if: SIFVJCOMP 1
Aug 20 10:46:10 paris vmunix: ppp: Pii->flags 0x1f
Aug 20 10:46:18 paris syslog: packet from unknown router, 147.136.23.2
Aug 20 10:46:41 paris vmunix: ppp_async: bad protocol low byte
Aug 20 10:46:42 paris vmunix: ppp_async: short packet
Aug 20 10:46:42 paris vmunix: ppp: unknown protocol 0x300
Aug 20 10:46:49 paris vmunix: ppp_async: short packet
Aug 20 10:46:49 paris vmunix: ppp: unknown protocol 0x300
Aug 20 10:47:04 paris login: ROOT LOGIN ttyp6 FROM zak
Aug 20 10:47:17 paris vmunix: ppp_async: short packet
Aug 20 10:47:17 paris vmunix: ppp: unknown protocol 0x300
Aug 20 10:47:18 paris vmunix: ppp_async: short packet
Aug 20 10:47:18 paris vmunix: ppp: unknown protocol 0x300
Aug 20 10:47:42 paris vmunix: ppp_async: short packet
Aug 20 10:47:42 paris vmunix: ppp: unknown protocol 0x300
Aug 20 10:54:40 paris vmunix: ppp_if0: closed
Aug 20 10:54:40 paris vmunix: ppp_async0: closing

The remote machine doing the dialing is "zak". The machine in the office is
"paris". The last two ppp messages are from when I killed ppp on "zak".

As can be seen from the log, I did successfully log into paris from zak, but 
there seem to be lots of protocol errors, then at 10:47 there are no
messages until I kill the session.

Is there anything obvious I might be doing wrong that causes the session to 
"hang"?



Thanks,


Brian
Newsgroups: comp.protocols.ppp