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Table 4-20 describes the fields and available options:
Table 4-20
SNMP menu options
Key
Field
Description
A
SNMP
This display-only field identifies the menu.
B
TRAP
This trap receiver IP address corresponds to the destination where SNMP traps
RCVR IP
are sent. The IP address range is:
000.000.000.000 through 255.255.255.255
Setting TRAP RCVR IP to 000.000.000.000 effectively disables the OM 1000
from sending SNMP traps.
C
UP
The UP option returns you to the previous menu.
Tracking Dropped Packets
OM 1000 version 3.4.0 and later tracks the number of dropped packets for the Datapipe input
and the RF output ports. The data collected is then used to send out SNMP traps based on
user-defined values. The OM 1000 sends a major alarm when it has detected an overloaded
condition resulting in dropped packets for a period of time. The OM 1000 is considered to be in
this overloaded condition if it drops x packets per minute for at least y consecutive minutes. For
example, if x = 10 and y = 5, then the OM 1000 would have to drop 50 packets over a five-minute
time frame to create an alarm condition. The OM 1000 calculates the number of drops
approximately once every minute. The default x value is 10 and the default y value is five. The
OM 1000 clears the major alarm condition if no more than z number of packets are dropped due
to an overload condition for at least y minutes. The default z value is zero. For example, if the
OM 1000 is configured with default values, it would have to NOT drop any packets for five
straight minutes to clear the major alarm condition.
The OM 1000 also tracks the total drops counting from the last reboot. This value can be
retrieved through SNMP or by saving the config.ini at the front panel and then viewing it
from the console port. The total drops can be cleared by SNMP or by rebooting the OM 1000.
The OM 1000 provides a high-water count of the related queue, which is the maximum number
of packets that were in the queue since the last reboot. The high-water count is accessible
through SNMP or by saving the config.ini at the front panel and then viewing it from the
console port. The high-water count can be cleared by SNMP or by rebooting the OM 1000.
The OM 1000 will not start sending traps for these conditions until after the eleventh minute of
operation after boot-up.
Example config.ini:
[Packet Stats Monitor]
PacketStatsTable =
#Group 1
2 1 0 0 10 5 0
#Group 2
3 2 0 0 10 5 0
Setup and Operation
OM 1000 Installation and Operation Manual
4-37
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