Reference Guide

ManualsBrandsDell ManualsAccess PlatformsPowerSwitch S5000

1181

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

Version 9.0(1.3) Introduced on the S5000.

Usage

Information

The following describes output from 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)

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

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

Te 4/0 128.418 128 20000 FWD 20000 16384 0001.e801.6aa8 128.418

Te 4/1 128.419 128 20000 FWD 20000 16384 0001.e801.6aa8 128.419

Te 4/8 128.426 128 20000 FWD 20000 8192 0001.e805.e306 128.130

Te 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

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

Te 4/0 Desg 128.418 128 20000 FWD 20000 P2P Yes

Te 4/1 Desg 128.419 128 20000 FWD 20000 P2P Yes

Te 4/8 Root 128.426 128 20000 FWD 20000 P2P No

Te 4/9 Altr 128.427 128 20000 BLK 20000 P2P No

Dell#

Example (EDS,

LBK)

NOTE: “LBK_INC” (bold below) means Loopback BPDU Inconsistency.

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

Rapid Spanning Tree Protocol (RSTP)

1189