From: cacca mucca (caccamucca@hotmail.com)
Date: Thu Jul 07 2005 - 11:28:25 GMT-3
Just a guess here, does your server have multiple NICs? Configured as some
WEIRD or incorrect virtual setup? What kind of OS is the server running?
>From: Helena Qiu <ccie_helena@yahoo.ca>
>Reply-To: Helena Qiu <ccie_helena@yahoo.ca>
>To: ccielab@groupstudy.com
>Subject: wired mac address
>Date: Thu, 7 Jul 2005 00:41:10 -0400 (EDT)
>
>I connected a server to the port fa0/19 of 2900 switch. When I show
>mac-address-table, it shows mac add 02:02:0A:D2:0C:A4 to this port. When I
>show arp, it shows the server IP has another MAC 02:BF:0A:XXXXXX, which is
>assigned as virtual MAC to the server's adapter. And I cannot find where
>the MAC is assigned 02:02:0A:D2:0C:A4.
>
>The most wired thing is when I use span and sniffer the port in anothe
>port, i find the server use 02:02:0A:D2:0C:A4 as source MAC to send ARP
>request, but inside the ARP packet, it use MAC 02:BF:0A:XXXXXX as source
>MAC. When the router reply the ARP request, it use 02:02:0A:D2:0C:A4 as
>target MAC, and then it fails because the MAC add is not exist.
>
>When I sniffer in the server, i find that server sending ARP request with
>MAC 02:BF:0A:XXXXXX as source. It's so wired.
>
>Please let me if you have any idea about this problem. And any special
>meaning about the MAC 02:02:0A:D2:0C:A4, is it use for any special
>application?
>
>Pls. advise. Thanks.
>
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