Some very strange network behaviors

Gregory Hicks ghicks at cadence.com
Thu Sep 11 21:30:42 UTC 2003



> Date: Thu, 11 Sep 2003 13:35:37 -0700
> From: Crist Clark <crist.clark at globalstar.com>
> 
> Mike Lewinski wrote:
> > 
[...snip...]
> OS's IP stack is misbehaving badly, Zone Alarm should not see the traffic
> on the LAN that does not have his MAC address on it.
> 
> How would a switch/router be deciding that these other IP addresses 
> should go to his PC's NIC (MAC address)?

Unless the switch got confused when the MAC address changed as it
did...?  Then the switch would go into "broadcast" or "flood" mode
where every packet is delivered to evey port because the switch doesn't
know where to send it.

Regards,
Gregory Hicks

> -- 
> Crist J. Clark                               crist.clark at globalstar.com
> Globalstar Communications                                (408) 933-4387

---------------------------------------------------------------------
Gregory Hicks                           | Principal Systems Engineer
Cadence Design Systems                  | Direct:   408.576.3609
555 River Oaks Pkwy M/S 6B1             | Fax:      408.894.3479
San Jose, CA 95134                      | Internet: ghicks at cadence.com

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ignorance or stupidity.

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