Hello, Gergely!
On Thu, 26 Aug 1999, Gergely Madarasz wrote:
>I've been experiencing very strange problems with ipx. I wanted to mount a
>netware server today, so I started ipx networking, like I always do:
>
>modprobe ipx
>ipx-configure --auto-primary=on --auto-interface=on
>
>Then I ran mount... it just hung... then I realized my tcp connections
>don't work as they should, and then my co-workers noticed their tcp
>connections are heavily lagged too, almost unusable.
>I stopped the ipx stuff, and then everything went back to normal.
>First I didn't want to believe it was my ipx that brought down the whole
>network here, so I started it again... bang again...
>My ethernet card got to about 50000 irqs per second, tcpdump showed high
>ipx traffic, but I didn't know how to analyze it.
>
>So after a couple of minutes I stopped it... everything went back to
>normal... for a few minutes... then something happened to our router, I
>don't know what, couldn't check it, but we couldn't see our second hop to
>the internet, just the first router. After several minutes it came back...
>I didn't think this had to do with this ipx thing, but now, after the work
>hours I started ipx again, checked some things, stopped it... and our
>route went down afterwards again, I just see the first hop now. So it
>seems it is not a coincidence...
I had the same problems here. I have 2 mars-nwe servers and one Novell4
server in the LAN. Configuring and setting up one more mars-nwe server
on a 2.2.11 kernel gives a disaster. One of mars-nwe and this new mars-nwe
servers went crazy and start to emit rip requests at the highest possible
speed after a minute or two. I failed to investigate what going on in
details, but seems, that ipx code has a serious bug in it.
No, when I changed one mars server to another, now based on 2.2.11 kernel,
I can't access any ipx network resources located in LAN. Sending queries
to any server or direct address just results to timeout.
The problems with your router can be internal to the router, for e.g. on
high network load, router can lost all keep-alive packets, that for e.g.
RIP uses, so it downed the interface for a while.
>The conclusion: ipx on linux can bring down whole LANs and routers...
I'd better say, on this particular linux kernel.
>Running kernel 2.2.10... the same kernel I used ipx with last week with no
>problems
Bye.
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