Administrator Guide

show spanning-tree rstp
Display the RSTP configuration.
C9000 Series
Syntax
show spanning-tree rstp [brief] [guard]
Parameters
brief (OPTIONAL) Enter the keyword brief to view a synopsis of the RSTP
configuration information.
guard (OPTIONAL) Enter the keyword guard to display the type of guard enabled on an
RSTP interface and the current port state.
Command Modes
● EXEC
● EXEC Privilege
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.4.2.1 Added support for the optional guard keyword on the C-Series, S-Series, and E-
Series TeraScale.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.4.1.0 Expanded to display the port error disable state (EDS) caused by loopback BPDU
inconsistency.
6.2.1.1 Introduced on the E-Series.
Usage
Information
The following describes the show spanning-tree rstp guard command shown in the following
example.
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 Types of STP guard configured (Root, Loop, or BPDU guard)
Example (Brief)
Dell#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
1462 Rapid Spanning Tree Protocol (RSTP)