Enterasys Networks 9034313-07 manual Set spantree disputedbpduthreshold

set spantree disputedbpduthreshold

Defaults

None.

Mode

Switch command, read‐write.

Example

This example shows how to reset the Loop Protect event notification state to the default of disabled.

C3(rw)->clear spantree lptrapenable

set spantree disputedbpduthreshold

Use this command to set the disputed BPDU threshold, which is the number of disputed BPDUs that must be received on a given port/SID until a disputed BPDU trap is sent.

Syntax

set spantree disputedbpduthreshold value

Parameters

value	Specifies the number of disputed BPDUs that must be received on a
	given port/SID to cause a disputed BPDU trap to be sent.
	A threshold of 0 indicates that traps should not be sent. The default
	value is 0.

Defaults

None.

Mode

Switch command, read‐write.

Usage

A disputed BPDU is one in which the flags field indicates a designated role and learning, and the priority vector is worse than that already held by the port. If a disputed BPDU is received the port is forced to the listening state. Refer to the 802.1Q‐2005 standard, IEEE Standard for Local and Metropolitan Area Networks – Virtual Bridged Local Area Networks, for a full description of the dispute mechanism, which prevents looping in cases of one‐way communication.

The disputed BPDU threshold is an integer variable that represents the number of disputed BPDUs that must be received on a given port/SID until a disputed BPDU trap is sent and a syslog message is issued. For example, if the threshold is 10, then a trap is issued when 10, 20, 30, and so on, disputed BPDUs have been received.

If the value is 0, traps are not sent. The trap indicates port, SID and total Disputed BPDU count. The default is 0.

9-52 Spanning Tree Configuration