Struggling this morning to understand what is going on, hope you all can clue me in.
Recently there was some re-cabling done on a couple of my access ports.
The first issue I am having is that between the two ports neither one of them comes up by itself. Meaning if I have shutdown on one but not the other neither connects, until I put in no shutdown on both of them. Then they come up for about a second only to have port security lock one of them down.
So I clear the sticky macs shutdown/no shutdown and bam same issue.
Now the MAC that keeps triggering it is from a Cisco VOIP phone. Which would be fine except there shouldn't be a cisco phone on that link. Further the phone MAC that is reported is located at another site entirely about 3 switch hops away. Maybe I'm just dumb or just haven't ran into this but I don't recall port security taking into account any MACS beyond the local switch with regards to port security.
Even weirder that phone that is showing up is still connected to that switch 3 hops away, so I don't see how this particular port can be seeing that MAC.
I am going to head to the site and verify the cabling is in fact hooked into what I think it is, but this has me scratching my head...
Only thing that even comes to my mind is that maybe my cabling guy inadvertently has created a network loop, but since I have the various "guards" to prevent that this is the result however weird.
No comments:
Post a Comment