Monitoring the AP Using RMON
6-10
Monitoring the AP Using RMON
The AP supports four of the nine Remote Network Monitoring MIB (RMON) groups:
•Statistics - Contains statistics measured by the probe for the wired LAN and the
wireless LAN interfaces.
•History - Records periodic statistical samples from a network and stores them for later
retrieval.
•Alarm - Periodically takes statistical samples from variables in the probe and
compares them to previously configured thresholds. If the monitored variable crosses
a threshold, an event is generated.
•Event - Controls the generation and notification of events from this device.
The settings for these groups can only be accessed with a Network Management System.
The console port and AP Manager cannot change or view the RMON group settings.
When the AP is initialized, two statistics groups are generated. One group is for the wired
interface and one is for the wireless interface. Also, two History groups are generated for
each interface. One group has a short term polling period of 30 seconds and one has a long
term polling period of 30 minutes.
The AP 2000 has the following limits for the RMON MIB because of memory limitations:
•A maximum of six Statistics groups.
•A maximum of four History groups, with a maximum of 200 “buckets”, also called
samples, for all groups. You can reconfigure each group. For example, you could
assign 80 buckets each to the long and short term History groups assigned to the wired
interface, and 20 buckets each to the long and short term History groups assigned to
the wireless interface. This example does not exceed the maximum of 200 buckets.
•A maximum of ten Alarm groups.
•A maximum of ten Event groups.