I'm thinking of upgrading our firewall from NetBSD 1.0 to 1.1 but thought
I'd run some tests first to ensure PPP runs OK. So I've installed 1.1
on a Pentium 90 with 16550A UART and I've tried PPP to a Netblazer and
a Xylogic Annex. Each time I connect OK but when I start pounding the
line (ftp) I get messages like those included at the end of this mail.

The ftp does eventually finish (if the line isn't dropped in the mean time).

After a while the line hangs up after anywhere from 1 to 10 minutes with
only the message "pppd[2101]: Modem hangup". When this occurs during a
transfer the TX/RX light goes off for a while before the hangup occurs.

Are these messages/problems normal? What could be causing the abnormal
hangup, there are no messages logged at either end giving any reason for
the disconnect? How can I get more debugging information so I can work
out why the line hangs up? I've got debug and kdebug on.

BTW, the NetBSD 1.0 box doesn't exhibit the same problems (except for
the silo overflow).

	Thanks in advance, dmh

Darren Hosking TUSC Computer Systems dmh@tusc.com.au

ps I'm also getting stray interrupt 7 messages and configuration errors
regarding the PCI bus, what do they mean? (there are no PCI cards in the
system).

Bootup messages:
----------------
Dec 27 04:26:36 support /netbsd: com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, 
working fifo


Dec 27 04:26:39 support /netbsd: pci0 bus 0 device 0: unknown vendor/product: 0x
8086/0x122d (class: bridge, subclass: host, revision: 0x01) not configured
Dec 27 04:26:40 support /netbsd: pci0 bus 0 device 7: unknown vendor/product: 0x
8086/0x122e (class: bridge, subclass: ISA, revision: 0x02) not configured

Dec 27 10:10:23 support /netbsd: stray interrupt 7

Error messages:
---------------
Dec 28 04:10:43 support /netbsd: ppp0: bad fcs 4d00
Dec 28 04:10:43 support /netbsd: ppp0: bad fcs 9abc
Dec 28 04:10:43 support /netbsd: ppp0: bad fcs a6a8
Dec 28 04:10:43 support /netbsd: ppp0: bad fcs 6b22
....
Dec 28 04:10:44 support /netbsd: ppp0: bad fcs ccf6
Dec 28 04:10:44 support /netbsd: ppp0: bad fcs b2ca
Dec 28 04:10:45 support /netbsd: ppp0: bad fcs 47db
Dec 28 04:11:42 support /netbsd: com1: 22 silo overflows, 0 ibuf overflows
Dec 28 04:12:06 support /netbsd: ppp0: bad fcs 94ec
Dec 28 04:12:06 support /netbsd: ppp0: bad fcs 8fe3
Dec 28 04:12:06 support /netbsd: ppp0: bad fcs 4d7e
Dec 28 04:12:06 support /netbsd: ppp0: bad fcs 5a
Dec 28 04:12:07 support /netbsd: ppp0: bad fcs 90a
....
Dec 28 04:12:08 support /netbsd: ppp0: bad fcs 74aa
Dec 28 04:12:09 support /netbsd: ppp0: bad fcs cd25
Dec 28 04:12:09 support /netbsd: ppp0: bad fcs d70f
Dec 28 04:13:05 support /netbsd: com1: 32 silo overflows, 0 ibuf overflows
Dec 28 04:15:07 support /netbsd: ppp0: bad fcs b81d
Dec 28 04:15:08 support /netbsd: ppp0: bad fcs 621
Dec 28 04:15:08 support /netbsd: ppp0: VJ uncompress failed on type comp
Dec 28 04:15:09 support last message repeated 8 times
Dec 28 04:15:50 support /netbsd: ppp0: bad fcs 9d24
Dec 28 04:15:50 support /netbsd: ppp0: bad fcs 24a5
Dec 28 04:15:50 support /netbsd: ppp0: bad fcs 3c56
Dec 28 04:15:51 support /netbsd: ppp0: bad fcs 14a6
Dec 28 04:15:51 support /netbsd: ppp0: bad fcs db32
Dec 28 04:15:51 support /netbsd: ppp0: bad fcs 2232
Dec 28 04:15:51 support /netbsd: ppp0: bad fcs bad4
Dec 28 04:15:51 support /netbsd: ppp0: bad fcs 3cf0
Dec 28 04:15:51 support /netbsd: ppp0: bad fcs 5ab4
Dec 28 04:15:51 support /netbsd: ppp0: VJ uncompress failed on type comp
Dec 28 04:15:52 support last message repeated 6 times
Dec 28 04:16:04 support /netbsd: ppp0: bad fcs dd9
Dec 28 04:16:04 support /netbsd: ppp0: bad fcs 53fe
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs 5427
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs 5f76
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs 71a8
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs ae01
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs a5a
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs 3323
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs 8bcf
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs 10d9
Dec 28 04:16:05 support /netbsd: ppp0: bad fcs 74ba
Dec 28 04:16:06 support /netbsd: ppp0: bad fcs 67bb
Dec 28 04:16:06 support /netbsd: ppp0: bad fcs 55a1
Dec 28 04:16:06 support /netbsd: ppp0: bad fcs 148a
Dec 28 04:16:06 support /netbsd: ppp0: bad fcs 8ec8
Dec 28 04:16:06 support /netbsd: ppp0: bad fcs bb2
Dec 28 04:16:06 support /netbsd: ppp0: bad fcs db06
Dec 28 04:16:06 support /netbsd: ppp0: VJ uncompress failed on type comp
Dec 28 04:16:06 support /netbsd: ppp0: VJ uncompress failed on type comp
Dec 28 04:16:07 support /netbsd: com1: 29 silo overflows, 0 ibuf overflows
Dec 28 04:17:54 support /netbsd: ppp0: bad fcs 88db
Dec 28 04:17:54 support /netbsd: ppp0: bad fcs fecb
Dec 28 04:17:54 support /netbsd: ppp0: bad fcs a594
Dec 28 04:17:54 support /netbsd: ppp0: bad fcs ed80
Dec 28 04:17:54 support /netbsd: ppp0: bad fcs edc7
Dec 28 04:17:54 support /netbsd: ppp0: bad fcs 7c3d
Dec 28 04:17:55 support /netbsd: ppp0: bad fcs 44dc
Dec 28 04:17:55 support /netbsd: ppp0: bad fcs 92fd
Dec 28 04:17:55 support /netbsd: ppp0: VJ uncompress failed on type comp
Dec 28 04:17:58 support last message repeated 23 times
Dec 28 04:18:54 support /netbsd: com1: 8 silo overflows, 0 ibuf overflows
Dec 28 04:19:37 support /netbsd: ppp0: bad fcs d4ab
Dec 28 04:19:37 support /netbsd: ppp0: VJ uncompress failed on type comp
Dec 28 04:19:41 support last message repeated 30 times
Dec 28 04:20:26 support /netbsd: ppp0: bad fcs f25
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs b39d
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs ab92
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs b3aa
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs 2d27
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs db67
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs 9160
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs bad3
...
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs c29a
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs 791b
Dec 28 04:20:27 support /netbsd: ppp0: bad fcs 7de
Dec 28 04:20:29 support /netbsd: ppp0: bad fcs 2605
Dec 28 04:20:29 support /netbsd: ppp0: bad fcs 6acf
Dec 28 04:20:37 support /netbsd: com1: 34 silo overflows, 0 ibuf overflows
Dec 28 04:21:47 support /netbsd: ppp0: bad fcs 2f9e
Dec 28 04:21:47 support /netbsd: ppp0: bad fcs dd41
Dec 28 04:21:47 support /netbsd: ppp0: bad fcs 5f4d
Dec 28 04:21:47 support /netbsd: ppp0: bad fcs d782
Dec 28 04:21:47 support /netbsd: ppp0: bad fcs d0b9
Dec 28 04:21:47 support /netbsd: ppp0: bad fcs 8211
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs d0e3
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs 8016
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs ab38
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs 55e2
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs afde
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs 77a9
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs 61cd
Dec 28 04:21:48 support /netbsd: ppp0: bad fcs 59d2
Dec 28 04:22:47 support /netbsd: com1: 14 silo overflows, 0 ibuf overflows
Dec 28 04:25:20 support pppd[2101]: Modem hangup

PPP command:
------------

pppd debug kdebug 1 -detach modem asyncmap a0000 defaultroute ip1:ip2
netmask 255.255.255.0 connect $PPP/blazer crtscts lock tty01 57600