Users Guide
brief (OPTIONAL) Enter the keyword brief to display a synopsis of the spanning tree group 
conguration 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 the port-
channel ID.
•
For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then 
the stack/slot/port/subport information.
• For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE then the 
stack/slot/port/subport information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the stack/
slot/port[/subport] information.
• For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the stack/
slot/port/subport information.
• For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then the 
stack/slot/port information.
root (OPTIONAL) Enter the keyword root to display conguration 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-specic. For command information about other platforms, see the relevant Dell Networking 
OS Command Line Reference Guide.
Version Description
9.10(0.0) Introduced on the S6100–ON.
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.
8.4.2.1 Added support for the optional guard keyword on the C-Series, S-Series, and E-Series.
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.
1524 Spanning Tree Protocol (STP)










