User manual

SS2R24G4i/SS2R48G4i
99
 Elevating the port priority of the port 0/0/1 of switch 4 to 160 while that of the port 0/0/3 of switch 4
is still the defaulted 128, will make the port 0/0/2 of switch 5 be the root port.
Port priority Link cost
Name
of the
bgidge
The MAC
address of
the bridge
The bridge
prioirty
Port
0/0/1
Port
0/0/2
Port
0/0/3
Port
0/0/1
Port
0/0/2
Port
00/3
SW1 …00-00-01 32768 128 128 200000 200000
SW2 …00-00-02 32768 128 128 200000 500000
SW3 …00-00-03 32768 128 128 200000 200000
SW4 …00-00-04 4096 160 128 128 200000 200000 200000
SW5 …00-00-05 32768 128 128 200000 200000
SW6 …00-00-06 32768 128 128 200000 200000
Configuration procedure is as follows
Switch 4
Switch4#config↵
Switch4(Config)#spanning-tree↵
Switch4(Config)#spanning-tree priority 4096↵
Switch4(Config)#interface ethernet 0/0/1↵
Switch4(Config-Ethernet0/0/1)#spanning-tree port-priority 160↵
Switch 2
Switch2#config↵
Switch2 (Config)#spanning-tree
Switch2 (Config)#interface ethernet 0/0/2
Switch2 (Config-Ethernet0/0/2)#spanning-tree cost 500000
RSTP count result