CLI Guide

guard (Optional) Enter the keyword guard to display the type of guard enabled on an MSTP
interface and the current port state.
Command Modes
• EXEC
• EXEC Privilege
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information Enable the multiple spanning tree protocol prior to using this command.
Example
Dell#show spanning-tree msti 0 brief
MSTI 0 VLANs mapped 1-4094
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32768, Address 0001.e800.0204
Root Bridge hello time 2, max age 20, forward delay 15, max hops 20
Bridge ID Priority 32768, Address 0001.e800.0204
We are the root of MSTI 0 (CIST)
Configured hello time 2, max age 20, forward delay 15, max hops 20
Bpdu filter disabled globally
CIST regional root ID Priority 32768, Address 0001.e800.0204
CIST external path cost 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
---------- -------- ---- ------- ----------- ------- --------------------
Te 0/10 128.170 128 2000 FWD 0 32768 0001.e800.0204 128.170
Te 0/11 128.171 128 2000 FWD 0 32768 0001.e800.0204 128.171
Te 0/12 128.172 128 2000 FWD 0 32768 0001.e800.0204 128.172
Interface Bpdu
Name Role PortID Prio Cost Sts Cost Link-type Edge Filter
Boundary
---------- ------ -------- ---- ------- ----------- ------- --------- ----
Te 0/10 Desg 128.170 128 2000 FWD 0 P2P No No
No
Te 0/11 Desg 128.171 128 2000 FWD 0 P2P No No
No
Te 0/12 Desg 128.172 128 2000 FWD 0 P2P No No
No
Dell#
Example (EDS and
LBK)
The bold line shows the loopback BPDU inconsistency (LBK_INC).
Dell#show spanning-tree msti 0 brief
MSTI 0 VLANs mapped 1-4094
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, max hops 20
Bridge ID Priority 32768, Address 0001.e801.6aa8
We are the root of MSTI 0 (CIST)
Configured hello time 2, max age 20, forward delay 15, max hops 20
CIST regional root ID Priority 32768, Address 0001.e801.6aa8
CIST external path cost 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
872 Multiple Spanning Tree Protocol (MSTP)