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Re: Emergency problem with extra ARP's, 2.2.12/13Pre6, DR mode

To: Jerome Richard <jrichard@xxxxxxxxxxxxxx>, "lvs-users@xxxxxxxxxxxxxxxxxxxxxx" <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Emergency problem with extra ARP's, 2.2.12/13Pre6, DR mode
From: "Stephen D. WIlliams" <sdw@xxxxxxx>
Date: Mon, 13 Sep 1999 02:01:08 +0000
After searching through the kernel, finding IFF_NOARP, tracing it out to the 
device flags
interface and then finally seeing '-arp' in the ifconfig man page, I'm trying 
that to see
if it works.

Is there some problem with using this (like it doesn't work)?

Thanks!
sdw

"Stephen D. WIlliams" wrote:

> Jerome Richard wrote:
>
> > "Stephen D. WIlliams" wrote:
> >
> > > ...
> > >
> > > Kernel 2.2.13pre6 from Alan's directory on ftp.funet.fi with the
> > > ipvs-0.8.3-2.2.12 patch applied...  (2.2.12 crashed every 5 min for some
> > > reason...)
> > >
> > > To test I can put a permanent entry ARP entry in the test system but I 
> > > Really
> > > can't do that with the router, especially since I will want to failover.
> > >
> > > Thanks!
> > > sdw
> >
> > What kind of hardware do you have for the LAN ? swith or hub ? Because some 
> > kind of
> > switchs have an ARP caching feature (Like Cabletron 6000). In this case,  
> > you must
> > disable ARP caching on all port of the swicth using VIP (Director and 
> > servers).
> >
> > Bye,
> > jerome.
>
> Allied Tellisyn 8124xl managed switch...  There is nothing in it's 
> configuration about
> the ARP level, only MAC address handling.
>
> Also, watching the output from arpwatch I believe that the Linux boxes really 
> are
> sending ARP replies when they shouldn't.
>
> If anyone with experience tracking that down in the kernel could help I would
> appreciate it!
>
> Thanks!
> sdw
>
> --
> OptimaLogic - Finding Optimal Solutions     Web/Crypto/OO/Unix/Comm/Video/DBMS
> sdw@xxxxxxx   Stephen D. Williams  Senior Consultant/Architect  http://sdw.st
> 43392 Wayside Cir,Ashburn,VA 20147-4622 703-724-0118W 703-995-0407Fax 5Jan1999

--
OptimaLogic - Finding Optimal Solutions     Web/Crypto/OO/Unix/Comm/Video/DBMS
sdw@xxxxxxx   Stephen D. Williams  Senior Consultant/Architect   http://sdw.st
43392 Wayside Cir,Ashburn,VA 20147-4622 703-724-0118W 703-995-0407Fax 5Jan1999




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