spanning-tree portfast

[iamprofessor98]

IF I remove vlan 922 do I still need to have spanning-tree portfast when I will assign this port to UPS? I just need a port setup without voice VLAN and in layer two network

interface GigabitEthernet2/0/47
 description PHONE/WORKSTATION
 switchport access vlan 921
 switchport mode access
 switchport voice vlan 922
 spanning-tree portfast

[Seb Rupik]

Hi there,

I would keep the spanning-tree portfast command on the switchport for two reasons. Firstly, the port will begin forwarding traffic sooner upon link-up. This can be critical for some devices which are very impatient for receiving DHCP responses. Secondly, if you are using RSTP then by including the command, the STP process identifies the switchport as an edge port, meaning that if it starts flapping, the switch does not generate a STP TCN causing your spanning-tree topology to reconverge.

cheers,

Seb.

[MHM Cisco World]

are you config any 802.1x ?