Installation guide

Switch Management
7-10
2. Select the Statistics tab from within the SNMP Access screen.
3. Refer to the following read-only statistics displayed within the SNMP Access Statistics screen:
V2/V3 Metrics Displays the individual SNMP Access events capable of having a
value tracked for them. The metrics range from general SNMP
events (such as the number of SNMP packets in and out) to specific
error types that can be used for troubleshooting SNMP events
(such as Bad Value and Read-Only errors).
Values Displays the current numerical value for the SNMP V2/V3 Metric
described on the left-hand side of the screen. The value equals the
number of times the target event has occurred. This data is helpful
in troubleshooting SNMP related problems within the network.
Usm Statistics Displays SNMP v3 events specific to Usm. The User-based Security
Model (USM) decrypts incoming messages. The module then
verifies authentication data. For outgoing messages, the USM
module encrypts PDUs and generates authentication data. The
module then passes the PDUs to the message processor, which
then invokes the dispatcher.
The USM module's implementation of the SNMP-USER-BASED-
SM-MIB enables SNMP to issue commands to manage users and
security keys. The MIB also enables the agent to ensure a
requesting user exists and has the proper authentication
information. When authentication is done, the request is carried
out by the agent.
Values Displays the current numerical value for the Usm Metric described
on the left-hand side of the screen. The value equals the number of
times the target event occurred. This data is helpful in
troubleshooting Usm (Authentication and Encryption) related
problems within the network.