Determining Monitoring Modes And Poll Rates - 3Com 3C15500 - Network Director User Manual

706 C 17: U
HAPTER SING
3C N D
OM ETWORK IRECTOR
case of the SNMP traps only mode, removes the polls entirely), but at the
cost of the detail of the monitoring information.
For example, full monitoring of a complex device may involve retrieving
state for several hundred monitors during every poll. By changing to
response monitoring mode you will reduce the number of monitors that
state is retrieved for to one (the IP Ping Service monitor), vastly reducing
the amount of traffic generated by the monitoring of that device.
However, 3Com Network Director will no longer be able to monitor links
using that device, will not be able to show you the state of, or generate
events based upon, any monitor other than the IP Ping Service monitor
on that device and will only be able to show response times in any
historical reports generated for the device.
Details of how to configure the monitoring modes used across your
network are provided in
on page 296.
Disable individual monitors. If you are monitoring a device in full
monitoring mode and there are one or more monitors that you are not
interested in then you can disable those monitors. Doing so will stop
3Com Network Director from retrieving the data for those monitors and
so will reduce the amount of traffic generated across the WAN link by
each poll for that device, but at the cost of the detail of the monitoring
information.
For example, if you are not interested in the errors on an Ethernet link
between two devices located at the same remote site then you can
disable the Ethernet Link Error Rate monitor, which will reduce the
amount of traffic generated by the monitoring of that link. However,
3Com Network Director will no longer be able to show you the state of,
or generate events based upon, the Ethernet Link Error Rate monitor on
that link, and will not be able to show errors in any historical reports
generated for the link.
Details of how to disable individual monitors are provided in
and Enabling Individual Monitors"

Determining Monitoring Modes and Poll Rates

By default 3Com Network Director will apply the automatic monitoring
mode to your whole map. This monitoring mode automatically selects
the devices that 3Com Network Director considers to be the most
important in your network and uses full monitoring for those devices and
O A M -S N
N ULTI ITE ETWORK
"Controlling Monitoring Type and Polling Rates"
on page 294.
"Disabling