[Gllug] 'arp' problem ?

[Bruce Richardson]

On Fri, Sep 21, 2007 at 04:51:18PM +0100, t.clarke wrote:
> Here's a weird one:
> while playing around with a new debian box on our network the following
> behaviour occurs:
> 
> pings from the new box on 192.168.123.203 to all other boxes on 192.168.123.0
> work fine  except for pings to 192.168.123.200
> 
> pings (or other connections) to 192.168.123.200 simply hang until some
> pings are done from 192.168.123.200 to 192.168.123.203  (which take a few
> seconds to start up !)

Does the ping have to be from 192.168.123.200 to 192.168.123.203 or
would pinging anything from 192.168.123.200 fix the problem?

It could be a Spanning Tree problem, if your switch is complex enough.
With Spanning Tree configured, switches may decide to block traffic
thruogh a port until they see enough traffic through it to determine
whether the device at the other end of the cable is a switch or a host.
If this is the case and you don't need Spanning Tree, turn it off.  If
you do need Spanning Tree, try turning it off apart from on those
ports which do connect to another switch (although that is a strategy
which carries a certain amount of risk).

-- 
Bruce

A problem shared brings the consolation that someone else is now
feeling as miserable as you.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 196 bytes
Desc: Digital signature
URL: <http://mailman.lug.org.uk/pipermail/gllug/attachments/20070921/f45e34c9/attachment.pgp>
-------------- next part --------------
-- 
Gllug mailing list  -  Gllug at gllug.org.uk
http://lists.gllug.org.uk/mailman/listinfo/gllug