[134274] in North American Network Operators' Group
Re: The tale of a single MAC
daemon@ATHENA.MIT.EDU (Franck Martin)
Sun Jan 2 16:24:22 2011
X-Barracuda-Envelope-From: franck@genius.com
Date: Mon, 3 Jan 2011 10:24:03 +1300 (FJST)
From: Franck Martin <franck@genius.com>
To: Graham Wooden <graham@g-rock.net>
In-Reply-To: <C9454E3A.2921F%graham@g-rock.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
In the early 90's a friend of mine got a box of 10 HP cards with all the sa=
me MAC address.
----- Original Message -----
From: "Graham Wooden" <graham@g-rock.net>
To: nanog@nanog.org
Sent: Sunday, 2 January, 2011 4:33:46 PM
Subject: The tale of a single MAC
Hi there,
I encountered an interesting issue today and I found it so bizarre =C2=AD s=
o I
thought I would share it.
I brought online a spare server to help offload some of the recent VMs that
I have been deploying. Around the same time this new machine (we=C2=B9ll c=
all it
Server-B) came online, another machine which has been online for about a
year now stopped responding to our monitoring (and we=C2=B9ll name this
Server-A). I logged into the switch and saw that the machine that stopped
responding was in the same VLAN as this newly deployed, and then quickly
noticed that Server-A=C2=B9s MAC address was now on Server-B=C2=B9s switch =
port.
=C2=B3What the ...=C2=B2 was my initial response.
