Example (EDS and LBK)

hops 5

Current root has priority 16384, Address 0001.e800.0a5c Number of topology changes 0, last change occurred 3058087

Port 82 (TenGigabitEthernet 2/1) is designated Forwarding Port path cost 0, Port priority 128, Port Identifier 128.82 Designated root has priority 16384, address 0001.e800.0a:5c Designated bridge has priority 32768, address 0001.e802.35:06 Designated port id is 128.82, designated path cost

Number of transitions to forwarding state 1 BPDU (Mrecords): sent 1109, received 0 The port is not in the portfast mode

Port 88 (TenGigabitEthernet 2/6) is root Forwarding

Port path cost 0, Port priority 128, Port Identifier 128.88 Designated root has priority 16384, address 0001.e800.0a:5c Designated bridge has priority 16384, address 0001.e800.0a:5c Designated port id is 128.88, designated path cost

Number of transitions to forwarding state 4 BPDU (Mrecords): sent 19, received 1103 The port is not in the portfast mode

Port 89 (TenGigabitEthernet 2/7) is alternate Discarding Port path cost 0, Port priority 128, Port Identifier 128.89 Designated root has priority 16384, address 0001.e800.0a:5c Designated bridge has priority 16384, address 0001.e800.0a:5c Designated port id is 128.89, designated path cost

Number of transitions to forwarding state 3 BPDU (Mrecords): sent 7, received 1103 The port is not in the portfast mode

The bold line shows the loopback BPDU inconsistency (LBK_INC).

Dell#show spanning-tree msti 0 brief

MSTI 0 VLANs mapped 1-4094

Executing IEEE compatible Spanning Tree Protocol Root ID Priority 32768, Address 0001.e801.6aa8

Root Bridge hello time 2, max age 20, forward delay 15, max hops 20

Bridge ID Priority 32768, Address 0001.e801.6aa8 We are the root of MSTI 0 (CIST)

Configured hello time 2, max age 20, forward delay 15, max hops 20

CIST regional root ID Priority 32768, Address 0001.e801.6aa8 CIST external path cost 0

Interface

 

Designated

PortID

Name

PortID

Prio Cost Sts Cost Bridge ID

----------------------------------------------------------

Te 1/1

128.257

128

20000 EDS 0 32768 0001.e801.6aa8 128.257

Interface

 

 

 

 

 

Name

Role PortID Prio Cost Sts Cost Link-type Edge Boundary

----------------------------------------------------------

Te 1/1 ErrDis 128.257

128 20000 EDS 0

P2P

No

No

Dell#show spanning-tree msti 0

MSTI 0 VLANs mapped 1-4094

Root Identifier has priority 32768, Address 0001.e801.6aa8 Root Bridge hello time 2, max age 20, forward delay 15, max hops 20

Multiple Spanning Tree Protocol (MSTP)

1007

Page 1007
Image 1007
Dell 9.7(0.0) manual Example EDS and LBK, P2P