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.
Z9500
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,
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
9.2(1.0)
Introduced on the Z9500.
Spanning Tree Protocol (STP)
1781
