Hello I am getting a CDP duplex miss match error on my core switch from one of my UC Presentation servers and I would like to enable auto negotiation. The current settings of the server is 100 full but the switch is set to auto ( I would like to get a gig). From a ssh shell I can issue the command:
set network nic eth0 auto en
I get a warning that I will lose connectivity but it still comes back at auto disabled.
Your set network nic command looks correct. Not sure why it's not taking.
If your CUP server is set to 100/full and the switch is auto/auto then you'll get a duplex mismatch. Autonegotiation is a passive process and while passively detecting speed is easy, detecting duplex is not. So the auto side will configure to 100/half (half duplex being the default), thus your mismatch.
You'll need to either set both sides to 100/full or auto/auto. I would recommend hard coding both sides to 100/full instead of auto/auto.
Thank you, I know this sounds like a basic problem but I wasn't getting the expected behavior. I have solved this problem and CDP is now happy on the core switch. Thank you all for taking the time to respond.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...