Guys,
I'm facing something interesting here.
The situation is the following: I have Cisco IP phones in the whole building and some people that moves from desk to meeting rooms and back to desk (lots of meeting). If a person connects her laptop to an IP phone (in the meeting room), and after the meeting this person then comes back to her desk (and connects her laptop in the PC-port from an IP phone), then we got an issue: the laptop simply doesn't work.
Taking a look at the mac-address table from the switch, we could conclude that the IP phone from the meeting room keeps informing the laptop mac-address through the switch port, therefore when the person connects the laptop in her desk, the switch learns the mac from two different ports, causing a flapping.
We realized that turning off the IP phone from the meeting room solves the problem - but, it's not indeed a good option.
Do you guys have any idea how could I decrease IP phone mac-address table's aging time?
Thanks!
Karl
