Port Traffic Controls

Rate-Limiting

The switch does not send more traps or Event Log messages for excess ICMP traffic on the affected port until the system operator resets the port’s ICMP trap function. The reset can be done through SNMP from a network manage­ ment station or through the CLI with the following setmib command.

Syntax: setmib hpIcmpRatelimitPortAlarmflag.< internal-port-#> -i 1

On a port configured with ICMP rate-limiting, this command resets the ICMP trap function, which allows the switch to generate a new SNMP trap and an Event Log message if ICMP traffic in excess of the configured limit is detected on the port.

For example, an operator noticing an ICMP rate-limiting trap or Event Log message originating with port A1 on a switch would use the following setmib command to reset the port to send a new message if the condition occurs again.

ProCurve(config)# setmib hpicmpratelimitportalarm- flag.1 -i 1

Determining the Switch Port Number Used in ICMP Port Reset

Commands: To enable excess ICMP traffic notification traps and Event Log messages, use the setmib command described on page 13-17.The port number included in the command corresponds to the internal number the switch maintains for the designated port, and not the port’s external (slot/number) identity.

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