Is there any known issues running 6816 and 6716 with upgraded DFC4 in VSS modes such as etherchannel inconsitencies due to mismatch underlying hardware? ... View more

Does anyone know a way to turn on security on switch port to force it to inform the port to only allow assign a voice IP address to a Cisco IP phone and if it's a PC then it will only get a data IP address. Basically we don't want a user spoofing his PC to get a voice IP address. I know switchport voice vlan needs CDP, but I have an over paranoid security dept that know that CDP can be simulated by hacker to potentially get access to the voice subnet. Problem is I have a site with multiple VRF's in an MPLS environment and if someone gets access to voice subnet they get into trusted VRF from the protected VRF?? > > Dont want to have to use NAC etc ... View more