Command History
Version 8.3.11.1
Introduced on the Z9000.
Version 8.4.2.1
Added support for the optional
guard
keyword on the C-Series, S-
Series, and E-Series TeraScale.
Version 8.3.7.0
Introduced on the S4810.
Version 7.6.1.0
Introduced on the S-Series.
Version 7.5.1.0
Introduced on the C-Series.
Version 6.4.1.0
Expanded to display the port error disable state (EDS) caused by
loopback BPDU inconsistency.
Version 6.2.1.1
Introduced on the E-Series.
Usage
Information
The following describes the
show spanning-tree rstp guard
command shown in
the Example below.
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)
Example (Brief)
FTOS#show spanning-tree rstp brief
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 8192, Address 0001.e805.e306
Root Bridge hello time 4, max age 20, forward delay 15
Bridge ID Priority 16384, Address 0001.e801.6aa8
Configured hello time 2, max age 20, forward delay 15
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
---------- ------- --- ------- -------------------- --------
Gi 4/0 128.418 128 20000 FWD 20000 16384 0001.e801.6aa8 128.418
Gi 4/1 128.419 128 20000 FWD 20000 16384 0001.e801.6aa8 128.419
Gi 4/8 128.426 128 20000 FWD 20000 8192 0001.e805.e306 128.130
Gi 4/9 128.427 128 20000 BLK 20000 8192 0001.e805.e306 128.131
Interface
Name Role PortID Prio Cost Sts Cost Link-type Edge
----------- ---- ------- --- ------- --------- ----
Gi 4/0 Desg 128.418 128 20000 FWD 20000 P2P Yes
Gi 4/1 Desg 128.419 128 20000 FWD 20000 P2P Yes
Gi 4/8 Root 128.426 128 20000 FWD 20000 P2P No
Gi 4/9 Altr 128.427 128 20000 BLK 20000 P2P No
FTOS#
Example (EDS,
LBK)
NOTE: “LBK_INC” (bold below) means Loopback BPDU Inconsistency.
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
1280
Summary of Contents for Force10 Z9000
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