In a scenario with two NSP 4050 in HA and bridge vlan and they connected to a same switch, what is the right configuration in the switch in order to avoid loops and guarantee the HA operation?
Switch ports configuration for NSP-1 3A port and NSP-2 3A port:
interface FastEthernet XX
switchport access vlan 10
Switch ports configuration for NSP-1 3B port and NSP-2 3B port:
interface FastEthernet YY
switchport access vlan 20
The above switch interfaces have STP enabled so we avoid loops. However our concern is related to HA operation due to the long time from blocking state to forwarding state (15 to 50 secs) in the switch ports.
Is it so simple how configure spanning-tree portfast in the above interfaces?