Reference Guide

spanning-tree 0
Assigns a Layer 2 interface to STP instance 0 and configures a port cost or port priority, or enables loop
guard, root guard, or the Portfast feature on the interface.
C9000 Series
Syntax
spanning-tree stp-id {cost cost | | portfast [bpduguard
[shutdown-on-violation]] | priority priority}
To disable Spanning Tree group on an interface, use the no spanning-tree
stp-id {cost cost | portfast [bpduguard [shutdown-on-
violation]] | priority priority} command.
Parameters
stp-id Enter the STP instance ID. The range is 0.
cost cost Enter the keyword cost then a number as the cost. The
range is from 1 to 65535. The defaults are:
• 10-Gigabit Ethernet interface = 2.
• Port Channel interface with 10-Gigabit Ethernet = 1.
portfast
[bpduguard
[shutdown-on-
viol ation]]
Enter the keyword portfast to enable Portfast to move
the interface into Forwarding mode immediately after the
root fails.
Enter the optional keyword bpduguard to disable the port
when it receives a BPDU.
Enter the optional keyword shutdown-on-violation to
hardware disable an interface when a BPDU is received and
the port is disabled.
priority priority Enter keyword priority then a number as the priority. The
range is from zero (0) to 15. The default is 8.
Defaults cost = depends on the interface type; priority = 8
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms,
see 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
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
Spanning Tree Protocol (STP)
1985