Configuring Snmp Notification Support - HP ProCurve 6400cl Series Management And Configuration Manual

Configuring for Network Management Applications
LLDP (Link-Layer Discovery Protocol)
14-40
Changing the Reinitialization Delay Interval. In the default configura­
tion, a port receiving a disable command followed immediately by a txonly,
rxonly, or tx_rx command delays reinitializing for two seconds, during which
time LLDP operation remains disabled. If an active port is subjected to
frequent toggling between the LLDP disabled and enabled states, LLDP adver­
tisements are more frequently transmitted to the neighbor device. Also, the
neighbor table in the adjacent device will change more frequently, as it deletes,
then replaces LLDP data for the affected port which, in turn, generates SNMP
traps (if trap receivers and SNMP notification are configured). All of this can
unnecessarily increase network traffic. Extending the reinitialization-delay
interval delays the port's ability to reinitialize and generate LLDP traffic
following an LLDP disable/enable cycle.
Syntax setmib lldpReinitDelay.0 -i < 1 - 10 >
Uses setmib to change the minimum time (reinitialization
delay interval) an LLDP port will wait before reinitializing
after receiving an LLDP disable command followed closely by
a txonly or tx_rx command. The delay interval commences
with execution of the lldp admin-status < port-list > disable
command. (Default: 2 seconds; Range: 1 - 10 seconds)
For example, the following command changes the reinitialization delay inter­
val to five seconds:
HPswitch(config)# setmib lldpreinitdelay.0 -i 5

Configuring SNMP Notification Support

You can enable SNMP trap notification of LLDP data changes detected on
advertisements received from neighbor devices, and control the interval
between successive notifications of data changes on the same neighbor.
Enabling LLDP Data Change Notification for SNMP Trap Receivers.
Syntax [ no ] lldp enable-notification < port-list >
Enables or disables each port in < port-list > for sending noti­
fication to configured SNMP trap receiver(s) if an LLDP data
change is detected in an advertisement received on the port
from an LLDP neighbor. (Default: Disabled)
For information on configuring trap receivers in the switch,
refer to the chapter titled "Configuring for Network Manage­
ment Applications" in the Management and Configuration
Guide for your switch.