We are having problems with Yealink phones and PoE. Our environment has some 60 C3650 switch stacks in place. Until recently, the only PoE we have drawn from them has been to Cisco APs, miscellaneous cameras, and door locks. No problems.
Now we are plugging Yealink phones in, and now we are seeing an alarming number of PoE failures. The phones simply do not power up, and once a port has acted this way, nothing else will work for PoE in that port. If we move the phone 8 or more ports in any either direction, we can get PoE.
There are no log entires
Has anybody had similar PoE issues with Yealink, or the C3650's? We are running 16.12.05b CAT3K_CAA-UNIVERSALK9.
Thank you!
Rick