They did add the compact feature to help clear this issue up...
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Thu, Nov 13, 2014 at 2:13 PM, Ty Featherling via Af <af@afmug.com> wrote: > I know on Mikrotik if you copy a config from one device to another and you > do not sanitize any MAC addresses in it you can rewrite the MACs on the new > device. Any chance you did something like that? If so a reset to default > config should restore the original MACs. > > -Ty > > On Thu, Nov 13, 2014 at 1:10 PM, Chuck McCown via Af <af@afmug.com> wrote: > >> I recommend you use different MACs on Ethernet devices that are >> connected to other Ethernet devices. Especially if they are all on the >> same collision domain. >> >> Improper operation may result in having both devices use the same MAC. >> >> Of course this will continue to be a problem until MAC-V6 is widely >> implemented, but try to find different MACs. I know they are hard to come >> by, but it is sure to make you life easier... >> >> (I used to have a block of MACs assigned to my company. Not sure if I >> had to pay Xerox for them or what. Been a long time ago.) >> >> *From:* That One Guy via Af <af@afmug.com> >> *Sent:* Thursday, November 13, 2014 11:48 AM >> *To:* af@afmug.com >> *Subject:* Re: [AFMUG] For love of all that is evil >> (mikrotik/routerboard) >> >> I always wondered how manufactures reuse their MACs, apparently all in >> the same batch >> >> On Thu, Nov 13, 2014 at 12:35 PM, Sterling Jacobson via Af <af@afmug.com> >> wrote: >> >>> Freaking hell, I just spent 30 minutes trying to unravel a router >>> mystery. >>> >>> Ended up that both of my CCR Mikrotik routers had THE SAME MAC ADDRESSES >>> between them! >>> >>> They are identical. Every port had a consecutive MAC number, but they >>> were the same numbers for both the SFP and GigE ports across the two >>> routers. >>> >>> I'm guessing they flashed them both at the manufacturer the exact same, >>> then didn't make it through a MAC renumbering. >>> >>> Or is this common with Mikrotik now days? >>> >>> I'm sure I've encountered it before, but like once every five years. >>> >>> Just a FYI for all y'all who use Mikrotiks. >>> >>> Watch your backs (I mean MACs)! >>> >> >> >> >> -- >> All parts should go together without forcing. You must remember that >> the parts you are reassembling were disassembled by you. Therefore, if you >> can't get them together again, there must be a reason. By all means, do not >> use a hammer. -- IBM maintenance manual, 1925 >> > >
