nanog mailing list archives
Re: Some very strange network behaviors
From: Crist Clark <crist.clark () globalstar com>
Date: Thu, 11 Sep 2003 14:49:56 -0700
Gregory Hicks wrote:
Date: Thu, 11 Sep 2003 13:35:37 -0700 From: Crist Clark <crist.clark () 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.
Even if a switch floods all ports, it does not change the fact the packet will not have the correct MAC address and his NIC should never pass it up the stack. Switches do not rewrite the Ethernet addresses on packets. -- Crist J. Clark crist.clark () globalstar com Globalstar Communications (408) 933-4387
Current thread:
- Re: Some very strange network behaviors Gregory Hicks (Sep 11)
- Re: Some very strange network behaviors Crist Clark (Sep 11)
- Re: Some very strange network behaviors Ray Wong (Sep 11)
- Re: Some very strange network behaviors Crist Clark (Sep 11)