White Papers

Interface Bpdu
Name Role PortID Prio Cost Sts Cost Link-type Edge Filter
---------- ------ -------- ---- ------- --- -------- ---- ------
Po 23 Desg 128.24 128 1600 FWD 0 P2P No No
Te 0/11 Dis 128.450 128 2000 DIS 0 P2P No No
Te 0/12 Desg 128.459 128 2000 FWD 0 P2P No No
Dell#
Example
Dell#show spanning-tree pvst vlan 2
VLAN 2
Root Identifier has priority 32768, Address 001e.c9f1.00f3
Root Bridge hello time 2, max age 20, forward delay 15
Bridge Identifier has priority 32768, Address 001e.c9f1.00f3
Configured hello time 2, max age 20, forward delay 15
Bpdu filter disabled globally
We are the root of VLAN 2
Current root has priority 32768, Address 001e.c9f1.00f3
Number of topology changes 0, last change occurred 3d1h ago on
Port 24 (Port-channel 23) is designated Discarding
Port path cost 1600, Port priority 128, Port Identifier 128.24
Designated root has priority 32768, address 001e.c9f1.00:f3
Designated bridge has priority 32768, address 001e.c9f1.00:f3
Designated port id is 128.24 , designated path cost 0
Number of transitions to forwarding state 0
BPDU sent 8, received 0
The port is not in the Edge port mode, bpdu filter is disabled
Port 450 (TenGigabitEthernet 0/1) is disabled Discarding
Port path cost 2000, Port priority 128, Port Identifier 128.450
Designated root has priority 32768, address 001e.c9f1.00:f3
Designated bridge has priority 32768, address 001e.c9f1.00:f3
Designated port id is 128.450 , designated path cost 0
Number of transitions to forwarding state 0
BPDU sent 0, received 0
The port is not in the Edge port mode, bpdu filter is disabled
Port 459 (TenGigabitEthernet 0/5) is designated Forwarding
Port path cost 2000, Port priority 128, Port Identifier 128.459
Designated root has priority 32768, address 001e.c9f1.00:f3
Designated bridge has priority 32768, address 001e.c9f1.00:f3
Designated port id is 128.459 , designated path cost 0
Number of transitions to forwarding state 1
BPDU sent 16, received 0
The port is not in the Edge port mode, bpdu filter is disabled
Example (EDS/
LBK)
Dell#show spanning-tree pvst vlan 2 interface gigabitethernet 1/0
TenGigabitEthernet 0/1 of VLAN 2 is LBK_INC discarding
Edge port:no (default) port guard :none (default)
Link type: point-to-point (auto) bpdu filter:disable (default)
Bpdu guard :disable (default)
Bpdus sent 152, received 27562
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-----------------------------------------------------------
Te 0/2 128.1223 128 20000 EDS 0 32768 0001.e800.a12b 128.1223
Example (EDS/
PVID)
Dell#show spanning-tree pvst vlan 2 interface gigabitethernet 1/0
TenGigabitEthernet 1/0 of VLAN 2 is PVID_INC discarding
Edge port:no (default) port guard :none (default)
Link type: point-to-point (auto) bpdu filter:disable (default)
Bpdu guard :disable (default)
Per-VLAN Spanning Tree Plus (PVST+) 917