Messages in this thread |  | | Date | Thu, 31 Oct 1996 12:40:06 +0100 | From | Franz Sirl <> | Subject | Undeliverable UDP broadcasts crashing Linux 2.0.x? |
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Hi,
in our site we have just upgraded our network. Due to this the cabling to the Linux was switched from BNC to TP. The TP cable is connected to a 10 Mbit port of a 10/100Mbit switch. This switch is turned off overnight.
Ever since this network change the Linux was down the next morning. I looked a little bit into it, and I now think that it's either the network card driver (tulip.c v0.32,v0.37,v0.41) or an internal problem with UDP broadcasts. There are two broadcast sources (telling from netstat -an) running on that machine, the SAMBA server and the MoreCOM software (a FaxModem Server for Windows clients). It seems Linux crashes as soon as the Send-Q on the socket reaches the 64k region. This happens due to the physically down network and the continously running UDP broadcast sources Samba and MoreCOM (about 1 packet/min).
Unfortunately the only log I get is from tulip.c, so I don't know what's really the cause:
Oct 31 01:17:30 linuxpc1 kernel: eth1: transmit timed out, switching to AUI media. Oct 31 01:18:20 linuxpc1 kernel: eth1: transmit timed out, switching to 10baseT media. Oct 31 01:18:30 linuxpc1 kernel: eth1: transmit timed out, switching to AUI media. Oct 31 01:19:30 linuxpc1 kernel: eth1: transmit timed out, status fc360000, SIA ffffffc0 ffffef0d ffff87c5 ffff0006, resetting... Oct 31 01:19:30 linuxpc1 kernel: Rx ring 00fff428: 80000000 80000000 80000000 80000000 80000000 80000000 80000000 80000000 800000 00 80000000 80000000 80000000 80000000 80000000 80000000 80000000 Oct 31 01:19:30 linuxpc1 kernel: Tx ring 00fff528: 7fffb178 80000000 80000000 80000000 80000000 80000000 80000000 80000000 Oct 31 01:20:30 linuxpc1 kernel: eth1: transmit timed out, status fc360000, SIA ffffffc0 ffffef0d ffff87c5 ffff0006, resetting... Oct 31 01:20:30 linuxpc1 kernel: Rx ring 00fff428: 80000000 80000000 80000000 80000000 80000000 80000000 80000000 80000000 800000 00 80000000 80000000 80000000 80000000 80000000 80000000 80000000 ...
The crash doesn't happen with BNC cabling.
My setup: Pentium120 Linux 2.0.2[34] 2 * SMC8432 with 21040, one connected to the internet, the other to the internal network.
Any hints? Franz Sirl.
Franz Sirl
!!!>> Come and visit Bavaria!! !!!>> Enjoy the alps, original bavarian beergardens and much more!
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