Dell S6000 Reference Manual page 1408

portfast
[bpduguard
[shutdown-on-
viol ation]]
priority priority
Defaults cost = depends on the interface type; priority = 8
Command INTERFACE
Modes
Command
This guide is platform-specific. For command information about other platforms,
History
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 9.0.2.0
Version
8.3.19.0
Version 8.3.11.1
Version 8.3.10.1
Version 8.4.2.1
Version 8.3.7.0
Version 8.2.1.0
Version 7.7.1.0
Version 7.5.1.0
Version 6.2.1.1
Usage
If you enable portfast bpduguard on an interface and the interface receives a
Information
BPDU, the software disables the interface and sends a message stating that fact.
The port is in ERR_DISABLE mode, yet appears in the show interface
commands as enabled. If you do not enable shutdown-on-violation, BPDUs
are still sent to the RPM CPU.
STP loop guard and root guard are supported on a port or port-channel enabled in
any Spanning Tree mode: Spanning Tree Protocol (STP), Rapid Spanning Tree
1408
Enter the keyword portfast to enable Portfast to move the
interface into Forwarding mode immediately after the root
fails.
Enter the optional keyword bpduguard to disable the port
when it receives a BPDU.
Enter the optional keyword shutdown-on-violation to
hardware disable an interface when a BPDU is received and
the port is disabled.
Enter keyword priority then a number as the priority. The
range is from zero (0) to 15. The default is 8.
Introduced on the S6000.
Introduced on the S4820T.
Introduced on the Z9000.
Introduced the loopguard and rootguard options on the
S4810.
Introduced the loopguard and rootguard options on the
E-Series TeraScale, C-Series, and S-Series.
Introduced on the S4810.
Introduced the shutdown-on-violation option.
Introduced on the S-Series.
Introduced on the C-Series.
Introduced on the E-Series.
Spanning Tree Protocol (STP)