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Re: [Networker] Linux Networker client floods network?
2008-03-31 09:27:45
Phil Myers wrote:
Hi group.
Have any of you ever seen the following problem with a Networker client on
Red Hat?
When the backup group starts, the Networker client begins broadcasting on
the entire network on all VLANs, flooding the network and causing a
virtual standstill. My network engineers tell me that this particular
client keeps trying to broadcast to the legato server as if it can't find
it. However, the data on this client is being backed up. No other
applications on this particular client exhibit this behavior; network
operations are only affected when this Networker client starts backing
up. We have tried 7.2.2 and 7.3.3 versions of the Linux client; same
result. Does this sound like a Networker client issue or do you think it
would be a hardware issue?
Ouch ! I thought this was solved ages ago. Which Linux version are
you using ? It happened to me a couple of times with the old Ferral
client (version 5.x) in the late 90's. My understanding of the bug is
that the RPC stack on Linux has a bug which causes it to enter a tight
retry loop if it looses connection to the RPC server. I think I also saw
this mentioned with another RPC based service. At the time it managed to
bring down our Cisco 7000 router (with a very old Motorola
68k-processor). I suggest that you will make sure that the client has a
stable network connection to the server.
Thanks for the help!
Phil Myers
pmyers2 AT conemaugh DOT org
Network Administrator
Memorial Medical Center
Conemaugh Health System
Johnstown, PA USA
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-- Yaron.
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