Reference Guide

1470 | Spanning Tree Protocol (STP)
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Command Modes
EXEC Privilege
Usage
Information
You must enable Spanning Tree group 0 prior to using this command.
Command
History
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 32 for EtherScale, 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 8.3.19.0 Introduced on S4820T
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