Users Guide
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.
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:
• 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.
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 (C-, S-, and E-Series TeraScale only) Enter the keyword loopguard to enable
loop guard on a PVST+ port or port-channel interface.
rootguard (C-, S-, and E-Series TeraScale only) Enter the keyword rootguard to enable
root guard on a PVST+ port or port-channel interface.
Defaults Not congured.
Command Modes INTERFACE
Command History
This guide is platform-specic. 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
9.7(0.0) Introduced on the S6000-ON.
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 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.
7.6.1.0 Introduced on the S-Series.
1210
Per-VLAN Spanning Tree Plus (PVST+)