各位前輩，大家午安 :

關於cisco C3850 Spanning tree Port 10 (TenGigabitEthernet1/0/10) of VLAN3101 is designated forwarding 請問要如何才能修改成root forwarding ? 謝謝。

如以下log紀錄所示 :

C3850#show spanning-tree int Te1/0/10 detail

Port 10 (TenGigabitEthernet1/0/10) of VLAN3098 is root forwarding
Port path cost 2, Port priority 128, Port Identifier 128.10.
Designated root has priority 7194, address cc8e.7114.8380
Designated bridge has priority 7194, address cc8e.7114.8380
Designated port id is 128.12, designated path cost 0
Timers: message age 16, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 354, received 1241353

Port 10 (TenGigabitEthernet1/0/10) of VLAN3101 is designated forwarding
Port path cost 2, Port priority 128, Port Identifier 128.10.
Designated root has priority 35869, address 6c5e.3ba4.d500
Designated bridge has priority 35869, address 6c5e.3ba4.d500
Designated port id is 128.10, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 2425, received 0