526 | Rapid Spanning Tree Protocol (RSTP)
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Example 2
Figure 28-5. show spanning-tree rstp with EDS and LBK
Example 3
Figure 28-6. show spanning-tree rstp guard Command Example
FTOS#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 Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
---------- -------- ---- ------- --- ------- -------------------- --------
TenGig 0/0 128.257 128 20000 EDS 0 32768 0001.e801.6aa8 128.257
Interface Bpdu
Name Role PortID Prio Cost Sts Cost Link-type Edge Filter
---------- ------ -------- ---- ------- --- ------- --------- ---- ------
TenGig 0/0 ErrDis 128.257 128 20000 EDS 0 P2P No No
FTOS#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 TenGig 0/0
Port 257 (TenGigabitEthernet 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, bpdu filter is disabled
FTOS#
Table 28-1. show spanning-tree rstp guard Command Description
Field Description
Interface Name RSTP interface
Instance RSTP instance
Sts Port state: root-inconsistent (INCON Root), forwarding (FWD), listening (LIS),
blocking (BLK), disabled (DIS), or shut down (EDS Shut)
Guard Type Type of STP guard configured (Root, Loop, or BPDU guard)
BPDU Filter Yes - BPDU Filter enabled
No - BPDU Filter disabled
FTOS#show spanning-tree rstp guard
Interface
Name Instance Sts Guard type Bpdu Filter
--------- -------- --------- ---------- -----------
TenGig 0/1 0 INCON(Root) Rootguard No
TenGig 0/2 0 FWD Loopguard No
TenGig 0/3 0 BLK Bpduguard No
FTOS#