CLI 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.
Syntax
spanning-tree stp-id {cost cost | {rootguard} | portfast
[bpduguard [shutdown-on-violation]| bpdufilter] | priority
priority}
To disable Spanning Tree group on an interface, use the no spanning-tree
stp-id {cost cost | {rootguard} | portfast [bpduguard
[shutdown-on-violation] | bpdufilter] | 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 1 to 65535. The defaults are:
• 10-Gigabit Ethernet interface = 2.
• Port Channel interface with 10-Gigabit Ethernet = 1.
rootguard Enter the keyword rootguard to enable STP root guard on
a port or port-channel interface.
portfast
[bpduguard
[shutdown-on-
viol ation] |
bpdufilter]
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 keywords shutdown-on-violation to
hardware disable an interface when a BPDU is received and
the port is disabled.
Enter the keyword bpdufilter to enable on an interface; it
should stop sending and receiving BPDUs on the port fast
enabled ports.
priority priority Enter keyword priority then a number as the priority. The
range is zero (0) to 15. The default is 8.
Defaults cost = depends on the interface type; priority = 8
Command Modes INTERFACE
Supported Modes Full–Switch Mode
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
Spanning Tree Protocol (STP)
1451