Dell Command Line Reference Guide for the S4048–ON System 9.14.2.8

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debug spanning-tree mstp

Enable debugging of the multiple spanning tree protocol and view information on the protocol.

Syntax
debug spanning-tree mstp [all | bpdu interface {in | out} | events]

To disable debugging, enter no debug spanning-tree mstp

Parameters
all
(OPTIONAL) Enter the keyword all to debug all spanning tree operations.
bpdu interface {in | out}
(OPTIONAL) Enter the keyword bpdu to debug bridge protocol data units (BPDU).

(OPTIONAL) Enter the interface keyword along with the type slot/port of the interface you want displayed. Type slot/port options are the following:

  • For a port channel interface, enter the keywords port-channel then a number.
  • For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port/subport[/subport] information.
  • For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
Optionally, enter an in or out parameter with the optional interface:
  • For Receive, enter the keyword in.
  • For Transmit, enter the keyword out.
events
(OPTIONAL) Enter the keyword events to debug MSTP events.
Command Modes
EXEC Privilege
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.10(0.0)
Introduced on the S6100–ON.
9.8(2.0)
Introduced on the S3100 series.
9.8(1.0)
Introduced on the Z9100–ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.7(0.0)
Introduced on the S6000-ON.
9.2(1.0)
Introduced on the Z9500.
9.0.2.0
Introduced on the S6000.
8.3.19.0
Introduced on the S4820T.
8.3.11.1
Introduced on the Z9000.
8.5.1.0
Added support for 4-port 40G line cards on the E-Series.
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.
pre-6.2.1.1
Introduced on the E-Series.
Example
DellEMC# debug spanning-tree mstp bpdu tengigabitethernet 2/1 ?
in Receive (in)
out Transmit (out)

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