Chapter 10: Snmp; Enabling Snmp; Snmp Versions And Workflow; Snmp V1 And V2 - Network Critical SmartNA-X User Manual

76 | SNMP | SmartNA-X 1G/10G Modular
SNMP

Enabling SNMP

The SNMP agent on this device is disabled by default. Enable the agent to allow SNMP hosts and management stations to
connect with this device.
1. Click on the chassis and select the SNMP tab.
2. Select the SNMP enabled checkbox, highlighted in the figure below.
3. Click Review/apply and review pending changes. To apply these changes to the system, click Apply changes or click
'X' to cancel.
Figure 63: SNMP enabled checkbox (highlighted)

SNMP versions and workflow

This device functions as an SNMP agent and supports SNMP v1, v2, and v3. It also reports system events to trap receivers
using the traps defined in the MIB that it supports.

SNMP v1 and v2

To control access to the system, a list of community entries is defined. Each community entry consists of a community
string and its access privilege. Only SNMP messages with the suitable community string and operation are responded to
by the system.
SNMP agents maintain a list of variables that are used to manage the device. The variables are defined in the Management
Information Base (MIB). The MIB presents the variables controlled by the agent.

SNMP v3

In addition to the functionality provided by SNMP v1 and v2, SNMP v3 applies access control and new trap mechanisms
to SNMPv1 and SNMPv2 PDUs. The SNMPv3 architecture introduces the User-based Security Model (USM) for
message security. The security features of USM include:
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SmartNA-X 1G/10G User Guide 1.4 2015 Network Critical Solutions Limited
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