Threshold monitoring
can be enabled for the packet processing values described in the
following table.
Saving Your Configuration
When you configure
thresholds they are not permanent unless you save the changes. When you
have completed configuring thresholds, save your configuration to
flash memory, an external memory device, and/or a network
location using the Exec mode command save configuration.
For additional information on how to verify and save configuration
files, refer to the System Administration Guide and the Command
Line Interface Reference.
Filtered/Dropped
Packet Thresholds
Filtered/dropped
packet thresholds generate alerts or alarms based on the total number
of packets that were filtered or dropped by the system as a result
of ACL rules during the specified polling interval.
Alerts or alarms are
triggered for filtered/dropped packets based on the following
rules:
- Enter condition: Actual
number of filtered/dropped packets > or = High
Threshold
- Clear condition: Actual
number of filtered/dropped packets < Low Threshold
If a trigger condition
occurs within the polling interval, the alert or alarm will not
be generated until the end of the polling interval.
IMPORTANT:
These instructions
assume that ACLs have been previously configured.
Configuring Filtered/Dropped
Packet Thresholds
Use the following
example to configure the filtered/dropped packet thresholds:
configure
threshold packets-filtered-dropped
<high_thresh> [ clear <low_thresh>]
threshold poll packets-filtered-dropped interval <time>
threshold monitoring
packets-filtered-dropped
end
Forwarded Packet
Thresholds
Forwarded packet
thresholds generate alerts or alarms based on the total number of
packets that were forwarded to active system CPU(s) during the specified
polling interval. Packets are forwarded to active system CPUs when
the NPUs do not have adequate information to properly route them.
IMPORTANT:
Ping and/or
traceroute packets are intentionally forwarded to system CPUs for
processing. These packet types are included in the packet count
for this threshold.
Alerts or alarms are
triggered for forwarded packets based on the following rules:
- Enter condition: Actual
number of forwarded packets > or = High Threshold
- Clear condition: Actual
number of forwarded packets < Low Threshold
If a trigger condition
occurs within the polling interval, the alert or alarm will not
be generated until the end of the polling interval.
Configuring Forwarded
Packet Thresholds
Use the following
example to configure the forwarded packet thresholds:
configure
threshold packets-forwarded-to-cpu
<high_thresh> [ clear <low_thresh> ]
threshold poll packets-forwarded-to-cpu interval <time>
threshold monitoring
packets-forwarded-to-cpu
end