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Parameters
cost port-cost Enter the keyword cost then the port cost value. The range is from 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 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, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
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.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced the hardware shutdown-on-violation options.
1358 Rapid Spanning Tree Protocol (RSTP)