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Date:      Sat,  7 Oct 2000 12:52:33 +0200
From:      "robi" <rnunnari@libero.it>
To:        isdn@freebsd.org
Cc:        ust@cert.siemens.de
Subject:   AVM Fritz!Card isa pnp freezes on heavy traffic
Message-ID:  <G223JL$Irj65QHqOdL6olIaDUyK1oDSrv6Ii7xC2vfOa9nKufnQ@libero.it>

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Hi there.

I installed i4b 00.95.00-beta on a FreeBSD-STABLE 4.1.1
but I had the same identical problem with i4b 00.90.29-dev
and FreeBSD-RELEASE 4.0

The isdn card is a AVM Fritz!Card isa pnp.

I use userland ppp with both B channels and autoload

problem:
often, when under heavy activity, the isdn connection freezes.

as you see in the following logs, it seems that the NT doesn't
answer the disc command but, after a reboot of FreeBSD, every
thing is OK again. That makes me think it not the NT misbehaving
nor something wrong with the cable connection

Any hints?

from /var/log/messages:
----------------------------
Oct 3 19:42:11 sunny /kernel: ifpnp0: <AVM Fritz!Card PnP> at port 
0x200-0x21f irq 9 on isa0
Oct 3 19:42:11 sunny /kernel: ifpnp0: AVM Fritz!Card PnP Class 0x9 
Revision 1 
Oct 3 19:42:11 sunny /kernel: ifpnp0: ISAC 2085 Version A1/A2 or 
2086/2186 Version 1.1 (IOM-2)
Oct 3 19:42:11 sunny /kernel: ifpnp0: passive stack unit 0
Oct 3 19:42:11 sunny /kernel: i4btel: 4 ISDN telephony interface
device(s) attached
Oct 3 19:42:11 sunny /kernel: i4brbch: 4 raw B channel access device(s)
attached
Oct 3 19:42:11 sunny /kernel: i4bipr: 4 IP over raw HDLC ISDN device(s)
attached (VJ header compression)
Oct 3 19:42:11 sunny /kernel: i4bctl: ISDN system control port attached
Oct 3 19:42:11 sunny /kernel: i4btrc: 4 ISDN trace device(s) attached
Oct 3 19:42:11 sunny /kernel: i4b: ISDN call control device attached
Oct 3 19:42:11 sunny /kernel: ata0-master: DMA limited to UDMA33,
non-ATA66 compliant cable
Oct 3 19:42:11 sunny /kernel: ad0: 9770MB <Maxtor 91021U2> 
[19852/16/63] at ata0-master using UDMA33
Oct 3 19:42:11 sunny /kernel: acd0: CDROM <LTN483L> at ata0-slave using
PIO4
Oct 3 19:42:11 sunny /kernel: Mounting root from ufs:/dev/ad0s1a
Oct 3 19:42:11 sunny named[101]: starting. named 8.2.3-T5B Sun Oct 1
16:02:27 CEST 2000 
root@sunny.noonlights.net:/usr/obj/usr/src/usr.sbin/named
Oct 3 19:42:11 sunny named[101]: limit files set to fdlimit (1024)
Oct 3 19:42:11 sunny named[102]: Ready to answer queries.
Oct 3 19:42:11 sunny /kernel: i4b: unit 0, assigned TEI =3D 73 =3D 0x49
Oct 3 19:43:16 sunny login: ROOT LOGIN (root) ON ttyv1
Oct 3 19:47:58 sunny /kernel: i4b-L1 ifpnp_isac_irq: unit 0: CRC error
Oct 3 19:47:58 sunny /kernel: i4b-L1 ifpnp_isac_irq: unit 0: Receive
Aborted error
Oct 3 19:59:49 sunny login: ROOT LOGIN (root) ON ttyv2
Oct 3 20:05:00 sunny /kernel: pid 579 (lynx), uid 1001: exited on signal
3 (core dumped)
Oct 3 20:10:44 sunny /kernel: i4b-L1 ifpnp_isac_irq: unit 0: CRC error
Oct 3 20:10:44 sunny /kernel: i4b-L1 ifpnp_isac_irq: unit 0: Receive
Aborted error
Oct 3 20:34:38 sunny /kernel: i4b-L1 ifpnp_isac_irq: unit 0: CRC error
Oct 3 20:34:38 sunny /kernel: i4b-L1 ifpnp_isac_irq: unit 0: Receive
Aborted error
Oct 3 21:16:54 sunny login: ROOT LOGIN (root) ON ttyv2
Oct 3 22:54:42 sunny login: ROOT LOGIN (root) ON ttyv3
Oct 3 23:08:28 sunny /kernel: i4b-L2 i4b_T200_timeout: unit 0, RC =3D 0
Oct 3 23:08:57 sunny /kernel: i4b-L3 T305_timeout: DISC not answered, cr
=3D 26
Oct 3 23:09:01 sunny /kernel: i4b-L3 T308_timeout: REL not answered, cr
=3D 26
Oct 3 23:12:12 sunny /kernel: i4b-L3 T305_timeout: DISC not answered, cr
=3D 52
Oct 3 23:12:16 sunny /kernel: i4b-L3 T308_timeout: REL not answered, cr
=3D 52
Oct 3 23:13:25 sunny login: ROOT LOGIN (root) ON ttyv4
Oct 3 23:27:09 sunny /kernel: i4b-L3 T303_timeout: SETUP not answered,
cr =3D 34
---------------------------

from isdntrace:
---------------------------
-- TE->NT - unit:0 - frame:000422 - time:03.10 23:07:55.852812 - 
length:4 ------
Dump:000 02 93 01 0f ....
Q921: SAP=3D0 (Call Control), R, TEI=3D73, S-Frame: RR N(R) 7 PF 1 

-- NT->TE - unit:0 - frame:000423 - time:03.10 23:08:05.862965 - 
length:4 ------
Dump:000 02 93 01 11 ....
Q921: SAP=3D0 (Call Control), C, TEI=3D73, S-Frame: RR N(R) 8 PF 1 

-- TE->NT - unit:0 - frame:000424 - time:03.10 23:08:05.862965 - 
length:4 ------
Dump:000 02 93 01 0f ....
Q921: SAP=3D0 (Call Control), R, TEI=3D73, S-Frame: RR N(R) 7 PF 1 

-- TE->NT - unit:0 - frame:000425 - time:03.10 23:08:27.783293 - 
length:12 -----
Dump:000 00 93 10 0e ....
Q921: SAP=3D0 (Call Control), C, TEI=3D73, I-Frame: N(S) 8 N(R) 7 P 0 
Dump:004 08 01 1a 45 08 02 80 90 ...E....
Q931: pd=3DQ.931/I.451, cr=3D0x1a (from origination), message=3DDISCONNECT: 
[cause: 16: Normal call clearing (Q.850) 
(location=3Duser, std=3DCCITT)]

-- TE->NT - unit:0 - frame:000426 - time:03.10 23:08:28.783309 - 
length:4 ------
Dump:000 00 93 01 0f ....
Q921: SAP=3D0 (Call Control), C, TEI=3D73, S-Frame: RR N(R) 7 PF 1 
------------------------------

Best regards.
--
Roberto Nunnari
Luck is... miss the wrong train.




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