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28-12 Riverstone Networks RS Switch Router User Guide Release 8.0
Troubleshooting RMON RMON Configuration
28.5 TROUBLESHOOTING RMON
If you are not seeing the information you expected with an
rmon show
command, or if the network management
station is not collecting the desired statistics, first check that the port is up. Then, use the
rmon show status
command to check the RMON configuration on the RS.
Check the following fields on the
rmon show status
command output:
1.
Make sure that RMON has been enabled on the RS. When the RS is booted, RMON is off by default.
RMON is enabled with the
rmon enable
command.
2.
Make sure that at least one of the RMON support levels—Lite, Standard, or Professional—is turned
on with the
rmon set lite|standard|professional
command.
3.
Make sure that RMON is enabled on the port for which you want statistics. Use the
rmon set
ports
command to specify the port on which RMON will be enabled.
4.
Make sure that the control table is configured for the report that you want. Depending upon the
RMON group, default control tables may be created for all ports on the RS. Or, if the RMON group
is not one for which default control tables can be created, you will need to configure control table
entries using the appropriate
rmon
command.
If you or your application are unable to create a control table row, check the
snmp show status
output for errors.
Make sure that there is a read-write community string. Verify that you can ping the RS and that no ACLs prevent
you from using SNMP to access the RS.
5.
Make sure that RMON has not run out of memory.
rs#
rmon show status
RMON Status
-----------
* RMON is ENABLED
* RMON initialization successful.
+--------------------------+
| RMON Group Status |
+-------+--------+---------+
| Group | Status | Default |
+-------+--------+---------+
| Lite | On | Yes |
+-------+--------+---------+
| Std | On | Yes |
+-------+--------+---------+
| Pro | On | Yes |
+-------+--------+---------+
RMON is enabled on: et.5.1, et.5.2, et.5.3, et.5.4, et.5.5, et.5.6, et.5.7, et.5.8
RMON Memory Utilization
-----------------------
Total Bytes Available: 48530436
Total Bytes Allocated to RMON: 4000000
Total Bytes Used: 2637872
Total Bytes Free: 1362128