Messages in this thread | | | Date | Thu, 14 Jan 1999 22:58:27 +0100 | From | Radovan Garabik <> | Subject | IPX troubles with 2.2* |
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Hi all
Recently I started to have problems with ipx. The situation: this is a small network with a few linux boxes and Novell server as gateway to the outside world. Recently I upgraded some of those computers to development kernels, and one computer with windows NT appeared on the network. The linux computers have all enabled ipx. When the NT is turned on, it sends an ipx broadcast packet to the network from time to time. tcpdump shows 22:19:10.486375 183.00:60:08:a0:0d:85.455 > 186.ff:ff:ff:ff:ff:ff.455: ipx-netbios 50 where 00:60:08:a0:0d:85 is the address of the NT box.
Sometimes the network got hogged and tcpdump showed the same netbios packets, seemingly originating from the NT, flooding the network at enormous rate. After unplugging the poor computer with NT from the net, those packets continued to flood the network. After some playing with tcpdump, it became clear that those packets are coming from linux computers. So it looks like the 2.2 kernels are sometimes duplicating the received broadcast packets. Just now there are 3 linuxes with 2.2pre6 kernels, 2 linuxes with 2.0.* kernels and novell netware server. Everything works fine, until I turn on the NT computer. The linuxes start to duplicate netbios broadcast packets, then (as it seems) duplicating each others' duplicated packets and bring the whole network to its knees. If there are only 2 linux boxes with 2.2 kernels, the duplication rate seems to be lower than the production of those packets from NT, and everything works. I have the same problems with 2.2pre6 and 2.1.125 kernels. When I disable ipx in the kernel, there are no problems. Also when I reboot those linuxes with 2.0.36 kernels, everything works fine even with ipx enabled.
cat /proc/net/ipx_interface gives: Network Node_Address Primary Device Frame_Type 00000186 0000C0948CD4 Yes eth0 EtherII 00000183 0000C0948CD4 No eth0 802.3
and /proc/net/ipx_route: Network Router_Net Router_Node 00000183 Directly Connected 00000180 00000186 0020AFBF0193 00000186 Directly Connected
Two 2.2 linux computers have 3c509b cards, one smc-ultra network card, and the NT have also 3c509 network card.
There was a mail from Gilbert Ramirez, dated Thu, 31 Dec 1998 11:56:40 , with subject: 2.2.0-pre1/Token-Ring/IPX = bad describing something which seemed similar to my problem.
regards, -- ---------------------------------------------------------- | Radovan Garabik http://www.fmph.uniba.sk/~garabik/ | | __..--^^^--..__ garabik@center.fmph.uniba.sk | ----------------------------------------------------------
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