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Date:      Sat, 17 Jul 1999 16:45:44 +0200
From:      Christoph Splittgerber <chris@sdata.de>
To:        freebsd-isdn@FreeBSD.ORG
Subject:   sporadic hangs
Message-ID:  <37909718.D4EF80D7@sdata.de>

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Hallo,

from time to time (abt. once a week) I see sporadic hangs of the ISDN
system (still at 00.70.0) on a FreeBSD 3.2-stable :-(.
As I am not into the ISDN code, I have to admit, the error messages
don't tell me too much:

Jul 17 07:49:43 orion /kernel: i4b: unit 0, assigned TEI = 65 = 0x41
Jul 17 13:04:49 orion /kernel: i4b-L2-i4b_i_frame_queued_up: V(S) ==
((V(A) + k) & 127)!
Jul 17 13:04:49 orion /kernel: i4b-L2-i4b_i_frame_queued_up: state =
ST_MULTIFR
Jul 17 13:04:49 orion /kernel: i4b-L2-i4b_print_l2var: unit0 V(R)=13,
V(S)=14, V(A)=13,ACKP=0,PBSY=0,OBSY=0
Jul 17 13:06:06 orion /kernel: i4b-L3-i4b_decode_q931: cannot find
calldescriptor for cr = 0x7b, crflag = 0x1, msg = 0x
4d, frame =  0x4d 0x8 0x2 0x81 0x90
Jul 17 13:06:20 orion /kernel: i4b-L3-i4b_decode_q931: cannot find
calldescriptor for cr = 0x7b, crflag = 0x1, msg = 0x
5a, frame =  0x5a
Jul 17 13:06:27 orion /kernel: i4b-L3-i4b_decode_q931: cannot find
calldescriptor for cr = 0x23, crflag = 0x1, msg = 0x
4d, frame =  0x4d 0x8 0x2 0x81 0x90
Jul 17 13:08:25 orion /kernel: i4b-L3-i4b_decode_q931: cannot find
calldescriptor for cr = 0x23, crflag = 0x1, msg = 0x
5a, frame =  0x5a
Jul 17 13:08:29 orion /kernel: i4b-L3-T303_timeout: SETUP not answered,
cr = 57
Jul 17 13:09:46 orion /kernel: i4b-L3-T303_timeout: SETUP not answered,
cr = 106
Jul 17 13:10:31 orion /kernel: i4b-L3-T305_timeout: DISC not answered,
cr = 57
Jul 17 13:10:35 orion /kernel: i4b-L3-i4b_decode_q931: cannot find
calldescriptor for cr = 0x39, crflag = 0x1, msg = 0x
4d, frame =  0x4d
Jul 17 13:13:37 orion /kernel: i4b-L3-i4b_decode_q931: cannot find
calldescriptor for cr = 0x39, crflag = 0x1, msg = 0x
5a, frame =  0x5a
Jul 17 13:13:41 orion /kernel: i4b-L3-T308_timeout: REL not answered, cr
= 106

... no in- or outgoing connections are accepted any longer 'till I
reboot the system.

The system (old 486@66MHz) has 2 Fritz! cards ... (from dmesg):
isic0 at 0x300 irq 5 flags 0x4 on isa
isic0: AVM A1 or AVM Fritz!Card
isic0: ISAC 2085 Version A1/A2 or 2086/2186 Version 1.1 (IOM-2)
(Addr=0x16e0)
isic0: HSCX 82525 or 21525 Version 2.1 (AddrA=0x6e0, AddrB=0xee0)
isic1 at 0x340 irq 12 flags 0x4 on isa
isic1: AVM A1 or AVM Fritz!Card
isic1: ISAC 2085 Version A1/A2 or 2086/2186 Version 1.1 (IOM-2)
(Addr=0x1720)
isic1: HSCX 82525 or 21525 Version 2.1 (AddrA=0x720, AddrB=0xf20)
.....
i4b: ISDN call control device attached
i4bisppp: 4 ISDN SyncPPP device(s) attached
i4bctl: ISDN system control port attached
i4bipr: 4 IP over raw HDLC ISDN device(s) attached (VJ header
compression)
i4btel: 2 ISDN telephony interface device(s) attached
i4brbch: 4 raw B channel access device(s) attached
i4btrc: 4 ISDN trace device(s) attached
.....
Both cards are connected to a TK-switch (Agfeo AS40) on two separate
ISDN buses.
I do connect to 3 different hosts, using the hdlc protocol (no PPP). The
other hosts also run FreeBSD 3.2-stable and 2.8-release and i4b 00.7.00
and do not have these problems.

I think, next thing I should do, is upgrading to 00.82.00. BTW: I
haven't done this yet, because I do not oversee the consequences: I also
track the 3.X-STABLE branch with cvsup - so what happens when I "over
install" 00.82.00 and than later cvsup the sys-distribution ?

Thanks in advance,

Christoph


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