Dell S4810 Reference Manual page 1434

Gi 4/9 Altr 128.427 128 20000 BLK 20000 P2P
Dell#
Example (EDS,
LBK)
Dell#show spanning-tree rstp br
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
Bridge ID Priority 32768, Address 0001.e801.6aa8
We are the root
Configured hello time 2, max age 20, forward delay 15
Interface
Name
- ---- ------- --- ------- -------------------- --------
Gi 0/0 128.257 128 20000 EDS 0 32768 0001.e801.6aa8 128.257
Interface
Name
--- ------ -------- ---- ------- --- ------- --------- ----
Gi 0/0 ErrDis 128.257 128 20000 EDS 0 P2P No
Dell#show spanning-tree rstp
Root Identifier has priority 32768, Address 0001.e801.6aa8
Root Bridge hello time 2, max age 20, forward delay 15, max
hops 0
Bridge Identifier has priority 32768, Address 0001.e801.6aa8
Configured hello time 2, max age 20, forward delay 15, max
hops 0
We are the root
Current root has priority 32768, Address 0001.e801.6aa8
Number of topology changes 1, last change occurred 00:00:31
ago on Gi 0/0
Port 257 (GigabitEthernet 0/0) is LBK_INC Discarding
Port path cost 20000, Port priority 128, Port Identifier
128.257
Designated root has priority 32768, address 0001.e801.6aa8
Designated bridge has priority 32768, address 0001.e801.6aa8
Designated port id is 128.257, designated path cost 0
Number of transitions to forwarding state 1
BPDU : sent 27, received 9
The port is not in the Edge port mode
Example
Dell#show spanning-tree rstp guard
(Guard)
Interface
Name
--------- -------- -------------------
Gi 0/1 0
Gi 0/2 0
Gi 0/3 0
1434
NOTE: "LBK_INC" (bold) means Loopback BPDU Inconsistency.
PortID Prio Cost Sts Cost
Role PortID
Instance Sts
INCON(Root) Rootguard
FWD
BLK
Designated
Bridge ID PortID
Prio Cost Sts Cost Link-type Edge
Guard type
Loopguard
Bpduguard
Rapid Spanning Tree Protocol (RSTP)
No