Status and Statistics
RMON
59 Cisco Sx350, SG350X, SG350XG, Sx550X & SG550XG Series Managed Switches, Firmware Release 2.2.5.x
4
To view technical support information useful for debugging purposes:
STEP 1 Click Status and Statistics > Diagnostics > Tech-Support Information.
STEP 2 Click Generate.
Information from a variety of show CLI commands is displayed.
NOTE Generation of output from this command may take some time. When the information is
generated, you can copy it from the text box in the screen.
RMON
RMON (Remote Networking Monitoring) enables an SNMP agent in the device to proactively
monitor traffic statistics over a given period and send traps to an SNMP manager. The local
SNMP agent compares actual, real-time counters against predefined thresholds and generates
alarms, without the need for polling by a central SNMP management platform. This is an
effective mechanism for proactive management, provided that you have set the correct
thresholds relative to your network’s base line.
RMON decreases the traffic between the manager and the device since the SNMP manager
does not have to poll the device frequently for information, and enables the manager to get
timely status reports, since the device reports events as they occur.
With this feature, you can perform the following actions:
• View the current statistics (from the time that the counter values cleared). You can also
collect the values of these counters over a period of time, and then view the table of
collected data, where each collected set is a single line of the History tab.
• Define interesting changes in counter values, such as “reached a certain number of late
collisions” (defines the alarm), and then specify what action to perform when this
event occurs (log, trap, or log and trap).
Statistics
The Statistics page displays detailed information regarding packet sizes and information
regarding physical layer errors. The information is displayed according to the RMON
standard. An oversized packet is defined as an Ethernet frame with the following criteria:
• Packet length is greater than MRU byte size.
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