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spanning-tree rstp
c e s
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.
Syntax
spanning-tree rstp {cost port-cost | edge-port [bpduguard [shutdown-on-violation]] |
priority priority | {loopguard | rootguard}}
Parameters
Defaults
Not configured
Command Modes
INTERFACE
Command
Version 8.5.1.0
History
Version 8.4.2.1
Version 8.2.1.0
Version 7.6.1.0
Version 7.5.1.0
Version 7.4.1.0
Version 6.2.1.1
cost port-cost
Enter the keyword
Range: 1 to 200000
Defaults:
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 keyword 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-
(OPTIONAL) Enter the keyword shutdown-on-violation to hardware disable an
interface when a BPDU is received and the port is disabled.
violation
priority priority
Enter keyword priority followed by a value in increments of 16 as the priority.
Range: 0 to 240. Default: 128
loopguard
Enter the keyword loopguard to enable loop guard on an RSTP port or port-channel
interface.
rootguard
Enter the keyword rootguard to enable root guard on an RSTP port or port-channel
interface.
Introduced the
Introduced the
C-Series, and S-Series.
Introduced hardware shutdown-on-violation options
Support added for S-Series
Support added for C-Series
Added the optional Bridge Port Data Unit (BPDU) guard.
Introduced for E-Series
cost
followed by the port cost value.
loopguard
rootguard
and
loopguard
rootguard
and
options on the E-Series ExaScale.
options on the E-Series TeraScale,
Rapid Spanning Tree Protocol (RSTP) | 1273
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