Fresh install and the NICs are Broadcom b57 10/100/1000, I believe. ----- Reply message ----- From: "Randy McAnally" <r...@fast-serv.com> Date: Sun, Jan 2, 2011 8:53 am Subject: The tale of a single MAC To: "Graham Wooden" <gra...@g-rock.net>, <nanog@nanog.org>
---------- Original Message ----------- From: Graham Wooden <gra...@g-rock.net> > Hi there, > > I encountered an interesting issue today and I found it so bizarre > so 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 (we¹ll call it Server-B) came online, another machine which > has been online for about a year now stopped responding to our > monitoring (and we¹ll 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- > A¹s MAC address was now on Server-B¹s switch port. ³What the ...² > was my initial response. > Fresh OS install from scratch or did you load an image from an existing server? What make/model of on-board NICs? -- Randy M.
