I'm pretty new to setting up VOIP and do not understand configuring portfast on our access port.
For example, If a user or an IT person mistakenly plugs the same cable from the phone back into the other phone port or another port on the wall, will this cause a spanning tree loop?
I have looked into putting the ports in portfast this in the past, but this kept us back as a reference site we went to said they had trouble with this sort of thing?
The config I have setup on the access port is:
switchport mode access
switchport access vlan 9
switchport voice vlan 12
no ip address
mls qos trust cos
Please can you advise if this is at all an issue? Can someone explain ether way?
We are using Avaya 4600 and 96xx phone if that makes any difference?