Reference Guide

spanning-tree rstp
Configure an RSTP interface with one of these settings: port cost, edge port with optional bridge port data unit (BPDU)
guard, port priority, loop guard, or root guard.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
spanning-tree rstp {cost port-cost | edge-port [bpduguard
[shutdown-on-violation]] | priority priority | {loopguard |
rootguard}}
Parameters
cost port-cost Enter the keyword cost followed by the port cost value. The range is
1 to 200000. The defaults are:
• 100 Mb/s Ethernet interface = 200000
• 1-Gigabit Ethernet interface = 20000
• 10-Gigabit Ethernet interface = 2000
• Port Channel interface with one 100 Mb/s Ethernet = 200000
• Port Channel interface with one 1-Gigabit Ethernet = 20000
• Port Channel interface with one 10-Gigabit Ethernet = 2000
• Port Channel with two 1-Gigabit Ethernet = 18000
• Port Channel with two 10-Gigabit Ethernet = 1800
• Port Channel with two 100-Mbps Ethernet = 180000
edge-port Enter the keywords edge-port to configure the interface as a rapid
spanning tree edge port.
bpduguard
(OPTIONAL) Enter the keyword portfast to enable Portfast to
move the interface into Forwarding mode immediately after the root
fails.
Enter the keyword bpduguard to disable the port when it receives a
BPDU.
shutdown-on-
violation
(OPTIONAL) Enter the keywords shutdown-on-violation to
hardware disable an interface when a BPDU is received and the port
is disabled.
priority priority Enter keyword priority followed by a value in increments of 16 as
the priority. The range is 0 to 240. The default is 128.
loopguard (C-, S-, and E-Series TeraScale only) Enter the keyword loopguard
to enable loop guard on an RSTP port or port-channel interface.
rootguard (C-, S-, and E-Series TeraScale only) Enter the keyword rootguard
to enable root guard on an RSTP port or port-channel interface.
Defaults Not configured.
Command Modes INTERFACE
1418