Messages in this thread | | | Date | Tue, 23 Mar 1999 11:30:03 +0100 | From | Romano Giannetti <> | Subject | Re: ...anyone seeing strange network black-out since 2.2.2? |
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On Mon, Mar 22, 1999 at 11:22:23PM +0000, Alan Cox wrote: > > > Since 2.2.2 I experience strange network lookup: during 5min-20minutes > > > I have a complete black out of connection to all the host that are > > > behind a bridge. It seems that the arp reply is never processed, or > > > received. A host with 2.2.1 on the same cable is working well. > > If you are seeing that behaviour, and especially if you some brands > of 3com bridge check with tcp dump both sides. My guess would be the bridge > is eating the packets. >
I cannot tcpdump the other side, sorry... but I think you could be right:
And Jim Zajkowski <jamesez@umich.edu> wrote:
> Are you crossing routers? Try pinging your router once every two minutes > from the Linux box and see if it goes away.
...yes, I am pinging the router every minute and since then the network is working flawlessly. So... bridge problem? Or the "gc_min_interval" suggestion can matter? Note: this not a server, routing is static, ip load is very low. The other machine is a network server and never has problem... but this could be understandable, I see now, if the problem is that the bridge "forgets" to bridge...
(0)pern:~/tmp% arp -v Address HWtype HWaddress Flags Mask Iface router ether 00:00:0C:0A:3D:E5 C eth0 upco.es ether 00:A0:C9:AD:37:A6 C eth0 clint.dea.icai.upco.es ether 00:A0:C9:B4:1A:23 C eth0 Entries: 3 Skipped: 0 Found: 3
the first two entries are "behind" the switch. The tird is directly connected via an hub. (A subnote: switch and bridge are the same beast, or not?)
Romano
-- Romano Giannetti, Professor - Univ. Pontificia Comillas (Madrid, Spain) Electronic Engineer - phone +34 915 422 800 ext 2410 fax +34 915 596 569
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