- Bronze, 100 points or more
Let's say I have this configuration on an interface:
spanning-tree mode rapid-pvst
switchport trunk native vlan 100
switchport trunk allowed vlan 20,30,40
switchport mode trunk
spanning-tree portfast trunk
spanning-tree bpdufilter enable
#show int trunk
Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 100
Port Vlans allowed on trunk
1) What will happen if the port receives an untagged frame? Will it stick it in VLAN 100, or just discard it?
2) BPDUFilter operatate on a per-VLAN basis. Will it look for BPDUs on VLAN 100 and take the port out of portfast mode accordingly?
The difference between global vs port level is documented on configuration guide. Just use 3750's as an example
Actually there is little difference applying bpduguard global vs port level as well, see the documentation for detail.