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Setting Port Link Traps and Link Flap Detection
SecureStack C2 Configuration Guide 5-19
Example
This example shows how to enable flow control:
C2(su)->set flowcontrol enable
Setting Port Link Traps and Link Flap Detection
Purpose
To disable or re ‐ enable link traps, display link trap status, and to configure the link flapping
detection function. By default, all ports are enabled to send SNMP trap messages indicating
changes to 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
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 ]
For information about... Refer to page...
show port trap 5-19
set port trap 5-20
show linkflap 5-21
set linkflap globalstate 5-23
set linkflap portstate 5-24
set linkflap interval 5-24
set linkflap action 5-25
clear linkflap action 5-25
set linkflap threshold 5-26
set linkflap downtime 5-26
clear linkflap down 5-27
clear linkflap 5-27