From: cacca mucca (caccamucca@hotmail.com)
Date: Thu Jul 07 2005 - 23:05:08 GMT-3
I don't work on the server side, but it sounds like misconfiguration on the
server.
Try changing the NIC out if you are able to do so. I don't know if hard
coding the arp entry in the router for the IP address will solve your issue,
you can alway give it a try.
Please do come back and let us, the group, know what you find.
>From: Helena Qiu <ccie_helena@yahoo.ca>
>To: cacca mucca <caccamucca@hotmail.com>, ccielab@groupstudy.com
>Subject: RE: wired mac address
>Date: Thu, 7 Jul 2005 12:04:46 -0400 (EDT)
>
>Hi, Cacca. Thanks.
>
>This server only has a NIC. But it is part of loadbalancer cluster. We
>configured a secondary virtual IP address with virtual MAC address, but not
>the one showed in the mac-address table. The server is running Windows
>2000.
>
>What confuses me most is why the mac-address table shows different from
>ARP?
>
>Please advise, Appreciate your help.
>
>cacca mucca <caccamucca@hotmail.com> wrote:
>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
> >Reply-To: Helena Qiu
> >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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