Reference Guide

Spanning Tree Protocol (STP) | 1425
Parameters
Command Modes
EXEC Privilege
Usage
Information
You must enable Spanning Tree group 0 prior to using this command.
Command
History
0
Enter 0 (zero) to display information about that specific Spanning Tree group.
active
(OPTIONAL) Enter the keyword active to display only active interfaces in
Spanning Tree group 0.
brief
(OPTIONAL) Enter the keyword brief to display a synopsis of the Spanning Tree
group configuration 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 1-Gigabit Ethernet interface, enter the keyword GigabitEthernet
followed by the slot/port information.
• For a SONET interface, enter the keyword sonet followed by the slot/port
information.
• For a Port Channel interface, enter the keyword port-channel followed by a
number:
• C-Series and S-Series Range: 1-128
• E-Series Range: 1 to 255 for TeraScale and 1 to 512 for ExaScale.
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet
followed by the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE followed by
the slot/port information.
root
(OPTIONAL) Enter the keyword root to display configuration 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.
Version 8.5.1.0 Added support for 4-port 40G line cards on the E-Series ExaScale.
Version 8.4.2.1 Support for the optional guard keyword was added on the C-Series,
S-Series, and E-Series TeraScale.
Version 8.3.7.0 Introduced on S4810
Version 7.7.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.2.1.1 Introduced on E-Series