The port on the SXT got fried with the power supply. Whatever happened
is causing it to echo the other MAC address.
On 1/18/2018 11:10 PM, Grand Avenue Broadband wrote:
More accurately, "I'm my own neighbor." This one has me buffaloed.
MikroTik neighbor protocol claims that the "neighbor" of port 3 is… port 3.
This is not just awkward, but it really p*s off OSPF.
Physically, port 3 is attached to a single cable that runs up a mast to an SXT 5 lite
configured as a "layer 2 bridge" to another location. I run cable test and
MikroTik claims the cable is fine.
I went out to the site today (90 min one-way) and discovered the power supply
for the SXT was fried (plus the mast cable had popped out of the POE injector
at some point). I replaced it, and the neighbor table properly reported the
presence of the SXT. Hooray!
I was able to talk to the SXT via ROMON while I was onsite. It had established
a good wireless connection to its partner SXT, but I still couldn't get actual
routes established through it, and couldn't figure out why. The wireless link
stayed up solid except for two occasions on which I rebooted the local SXT,
once to upgrade the OS to match everybody else, and once for some reason I
don't recall. This is the log from the far end.
After some time unable to find an obvious routing issue (using the same
configuration that has been working there for two years) I ran out of time and
made the return trip. When I got back to the office and logged in remotely to
continue the debug, I found that the neighbor table had reverted back to its
old tricks, reporting the port's own MAC address as its own neighbor.
Furthermore, the SXT at the far end reports the wireless link went dead right
about the time I was halfway home, which I bet is when the neighbor folly
reintroduced itself. Talk about a case of mechanic-itis.
Has anybody seen anything like this before? Does anybody have any ideas?
--
Scott Reed
SBRConsulting, LLC
WISPA Vendor Member
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://mail.butchevans.com/pipermail/mikrotik/attachments/20180119/44373c9d/attachment.html>
_______________________________________________
Mikrotik mailing list
Mikrotik@mail.butchevans.com
http://mail.butchevans.com/mailman/listinfo/mikrotik
Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
