Messages in this thread | | | From | "Henning P. Schmiedehausen" <> | Subject | Re: Fragment flooding in 2.4.x/2.5.x | Date | Tue, 6 Aug 2002 07:53:13 +0000 (UTC) |
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Trond Myklebust <trond.myklebust@fys.uio.no> writes:
>>>>>> " " == kuznet <kuznet@ms2.inr.ac.ru> writes:
> > Hello! > >> the bug has already been known to crash a few servers...
> > Sorry? What crash do you speak about?
>You'll find it documented on RedHat's Bugzilla (can't remember the >exact reference - sorry). Basically the first RH-7.3 kernels were >causing a DOS on a couple of Netapps w/ Gigabit connections.
You didn't exactly need a NetApp for this. A RH 7.3 NFS client with a Solaris 2.6 NFSv3 server box and a switched, trunked 100 MBit network was very very sufficient. I have the mrtg printouts still on the wall in my office. 46 hours of solid 93 Mbits/sec of fragmented NFS packets chewing off traffic on its VLAN and dropping everything else out of the backbone trunks. Every service and their grandmothers died around here. :-)
Ah, the joys of NFS.
Regards Henning
-- Dipl.-Inf. (Univ.) Henning P. Schmiedehausen -- Geschaeftsfuehrer INTERMETA - Gesellschaft fuer Mehrwertdienste mbH hps@intermeta.de
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