Configuring Link Traps And Link Flap Detection; Purpose; Commands; Show Port Trap - Enterasys Matrix DFE-Gold Series Configuration Manual

show port trap

Configuring Link Traps and Link Flap Detection

Purpose

To disable or re‐enable link traps and to configure the link flapping detection function. By default,
all ports are enabled to send SNMP trap messages indicating changes in their link status (up or
down). The link flap function detects when a link is going up and down rapidly (also called "link
flapping") on a physical port, and takes the required actions (disable port, and eventually send
notification trap) to stop such a condition. If left unresolved, the "link flapping" condition can be
detrimental to network stability because it can trigger Spanning Tree and routing table
recalculation.

Commands

For information about...
show port trap
set port trap
show linkflap
set linkflap globalstate
set linkflap
set linkflap interval
set linkflap action
clear linkflap action
set linkflap threshold
set linkflap downtime
clear linkflap down
clear linkflap
show port trap
Use this command to display whether the port is enabled for generating an SNMP trap message if
its link state changes.
Syntax
show port trap [port-string]
Parameters
port‐string
Defaults
If port‐string is not specified, the trap status for all ports will be displayed.
(Optional) Displays link trap status for specific port(s). For a detailed
description of possible port‐string values, refer to "Port String Syntax
Used in the CLI" on page 4‐2.
Enterasys Matrix DFE-Gold Series Configuration Guide 4-39
Configuring Link Traps and Link Flap Detection
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