Dell MXL 10GbE - Page 1279

portfast
[bpduguard
[shutdown-on-
viol ation] |
bpdufilter]
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 keywords shutdown-on-violation to
hardware disable an interface when a BPDU is received and
the port is disabled.
Enter the keyword bpdufilter to enable on an interface; it
should stop sending and receiving BPDUs on the port fast
enabled ports.
priority priority Enter keyword priority then a number as the priority. The
range is zero (0) to 15. The default is 8.
Defaults cost = depends on the interface type; priority = 8
Command
Modes
INTERFACE
Command
History
Version 8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module..
Usage
Information
If you enable portfast bpduguard on an interface and the interface receives a
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
still are sent to the RPM CPU.
STP root guard is supported on a port or port-channel enabled in any Spanning
Tree mode: Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP),
Multiple Spanning Tree Protocol (MSTP), and Per-VLAN Spanning Tree Plus (PVST
+).
Root guard is supported on any STP-enabled port or port-channel except when
used as a stacking port. When enabled on a port, root guard applies to all VLANs
configured on the port.
Spanning Tree Protocol (STP)
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