Service Manual

brief (OPTIONAL) Enter the keyword brief to display a synopsis of the spanning tree
group conguration information.
guard (OPTIONAL) Enter the keyword guard to display the type of guard enabled on an
STP interface and the current port state.
interface interface (OPTIONAL) Enter the keyword interface and 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.
The range is from 1 to 128.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port information.
root (OPTIONAL) Enter the keyword root to display conguration information on the
spanning tree group root.
summary (OPTIONAL) Enter the keyword summary to only the number of ports in the
spanning tree group and their state.
Command Modes EXEC Privilege
Command History
This guide is platform-specic. 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
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
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 ExaScale.
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.
7.7.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.2.1.1 Introduced on the E-Series.
Usage Information Enable spanning tree group 0 prior to using this command.
The following describes the show spanning-tree 0 command shown in the example.
Field Description
“Bridge Identier...” Lists the bridge priority and the MAC address for this STP bridge.
“Congured hello...” Displays the settings for hello time, max age, and forward delay.
Spanning Tree Protocol (STP)
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