Do an /interface ethernet print detail. You'll see if the MAC matches
the orig (hardware) MAC. You can then reset to that original MAC.
On 11/13/2014 1:13 PM, Ty Featherling via Af 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 <[email protected]
<mailto:[email protected]>> 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 <mailto:[email protected]>
*Sent:* Thursday, November 13, 2014 11:48 AM
*To:* [email protected] <mailto:[email protected]>
*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
<[email protected] <mailto:[email protected]>> 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
