RMON Configuration 269
RMON Configuration Remote Monitoring (RMON) is a kind of MIB defined by Internet Engineering Task
Force (IETF). It is an important enhancement to MIB II standards. RMON is mainly
used to monitor the data traffic across a network segment or even the entire
network, and is currently a commonly used network management standard.
Network Diagram Figure 81 Network diagram for RMON configuration
Networking and
Configuration
Requirements
■Before performing RMON configuration, make sure the SNMP agents are
correctly configured.
■The switch to be tested is connected to a terminal through the console port
and to a remote NMS through the Internet. Create an entry in the extended
alarm table to monitor the statistics on the Ethernet port. If the change rate of
the entry exceeds the configured rising threshold or falling threshold, an alarm
event will be triggered.
Applicable Products
Configuration Procedure # Create the statistics entry numbered 1 to take statistics on Ethernet 1/0/1.
<3Com> system-view
[3Com] interface Ethernet 1/0/1
[3Com-Ethernet1/0/1] rmon statistics 1
[3Com-Ethernet1/0/1] quit
# Add the event entries numbered 1 and 2 to the event table, which will be
triggered by the following extended alarms.
[3Com] rmon event 1 log
[3Com] rmon event 2 trap 10.21.30.55
# Add an entry numbered 2 to the extended alarm table to allow the system to
calculate the alarm variables with the
(.1.3.6.1.2.1.16.1.1.1.9.1+.1.3.6.1.2.1.16.1.1.1.10.1) formula to get the numbers
of all the oversize and undersize packets received by Ethernet 1/0/1 that are in
correct data format and sample the numbers in every 10 seconds. When the
change ratio between samples reaches the rising threshold of 50, event 1 is
triggered; when the change ratio drops under the falling threshold, event 2 is
triggered. Set the sampling type to forever and the owner of the alarm table to
user1.
Console port
Switch
Internet
Network port
NMS
Product series Software version Hardware version
Switch 5500 Release V03.02.04 All versions
Switch 5500G Release V03.02.04 All versions
Switch 4500 Release V03.03.00 All versions
Switch 4210 Release V03.01.00 All versions