Switching Tech, Lab 8. STP Feautures : BPDU Filter

Konfigurasikan STP Portfast pada SW1.

Aktifkan BPDU filter pada int e1/0 di SW1.

SW-1:

SW1(config)#interface e0/0  

SW1(config-if)#spanning-tree portfast  

SW1(config-if)#spanning-tree bpdufilter enable  

hapus dulu nilai bpdu bila sebelumnya sudah ada nilainya 

SW-1:

SW1#clear spanning-tree counters interface e1/0  

SW-1:

SW1#show spanning-tree interface e1/0 detail  

 Port 1 (Ethernet0/0) of VLAN0001 is designated forwarding

  Port path cost 100, Port priority 128, Port Identifier 128.1.  

   Designated root has priority 32769, address aabb.cc00.0100  

   Designated bridge has priority 32769, address aabb.cc00.0100  

   Designated port id is 128.1, designated path cost 0  

   Timers: message age 0, forward delay 0, hold 0  

   Number of transitions to forwarding state: 1  

   The port is in the portfast edge mode  

   Link type is point-to-point by default  

   Bpdu filter is enabled  

    BPDU: sent 0, received 0  

Terlihat bahwasanya nilai BPDU yang sent dan received akan selalu 0 karena di filter. Berbeda pada BPDU Guard dImana portnya akan langsung menjadi down, maka pada BPDU Filter interfacenya masih tetap UP.