3Com 2500 manual implementing many probes in a large network can be high

LANplex RMON Implementation 13-3

Table 13-1 RMON Groups Supported in the LANplex® System

	Group
Group	Number	Purpose
Statistics	1	Maintains utilization and error statistics for the
		segment being monitored
History	2	Gathers and stores periodic statistical samples
		from the statistics group.
Alarm	3	Allows you to define thresholds for any MIB
		variable and trigger an alarm.
Events	9	Allows you to define actions based on alarms.
		You can generate traps, log the alarm, or both.

3Com Transcend RMON requires one probe per LAN segment. Because a segment is a RMON Agents portion of the LAN separated by a bridge or router, the cost of

implementing many probes in a large network can be high.

To solve this problem, 3Com has built an inexpensive RMON probe into the Transcend SmartAgent software in each LANplex 2500 system. This probe allows you to deploy RMON widely around the network at a cost no more than that for traditional network monitors.

Placing probe functionality inside the LANplex 2500 system has these advantages:

■You can integrate RMON with normal device management

■The LANplex system can manage conditions proactively

The LANplex system associates statistics with individual ports and then takes action based on these statistics. For example, the system can generate a log event and send an RMON trap if errors on a port exceed a user-set threshold.

You must assign an IP address to the LANplex system to manage RMON. See the LANplex® 2500 Administration Console User Guide for information on how to assign an IP address.

Figure 13-1 shows an example of a LANplex RMON implementation. The LANplex 2500 system in this figure has two Fast Ethernet connections in addition to the 10BASE-T connections.