CLI 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.
C9000 Series
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 then the port cost value. The range is from 1 to 200000.
The defaults are:
● 10-Gigabit Ethernet interface = 2000
● Port Channel interface with one 10-Gigabit Ethernet = 2000
● Port Channel with two 10 Gigabit Ethernet = 1800
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 then a value in increments of 16 as the priority. The
range is from 0 to 240. The default is 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.
Defaults Not configured.
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
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.4.2.1 Added support for the optional guard keyword on the C-Series, S-Series, and
E-Series TeraScale.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced the hardware shutdown-on-violation options.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
7.4.1.0 Added the optional bridge port data unit (BPDU) guard.
6.2.1.1 Introduced on the E-Series.
Rapid Spanning Tree Protocol (RSTP) 1457