Reference Guide

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.
err-disable Enter the keywords err-disable to enable the port to be
put into the error-disable state (EDS) if an error condition
occurs.
vlan vlan-range Enter the keyword vlan then the VLAN numbers. The range
is from 1 to 4094.
cost number Enter the keyword cost then the port cost value. The range
is from 1 to 200000.
Defaults:
• 10-Gigabit Ethernet interface = 2000.
• Port Channel interface with one 10 Gigabit Ethernet =
2000.
• Port Channel with two 10 Gigabit Ethernet = 1800.
priority value Enter the keyword priority then the Port priority value in
increments of 16. The range is from 0 to 240. The default is
128.
loopguard Enter the keyword loopguard to enable loop guard on a
PVST+ port or port-channel interface.
rootguard Enter the keyword rootguard to enable root guard on a
PVST+ 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 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 Introduced the loopguard and rootguard options on the
E-Series TeraScale, C-Series, and S-Series.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced the hardware shutdown-on-violation
option.
1550
Per-VLAN Spanning Tree Plus (PVST+)