Configuring a Device to Communicate with an NMS Using SNMPv2c
After SNMPv2c is configured, a managed device and an NMS can run SNMPv2c to communicate with each other. To ensure communication, you need to configure the agent and NMS. This section only describes the configuration on a managed device (the agent side). For details about configurations on an NMS, see the pertaining NMS operation guide.
Usage Scenario
SNMP has to be deployed in a network to allow the NMS to manage network devices.
If your network is of a large scale with many devices and its security requirements are not strict or the network is secure (for example, a VPN network) but services on the network are so busy that traffic congestion may occur, then the SNMPv2c can be deployed to ensure communication between the NMS and managed devices.
SNMPv2c has a security risk. Using SNMPv3 is recommended.
- Configuring Basic SNMPv2c Functions
- After basic SNMP functions are configured, the NMS can perform basic operations such as Get and Set operations on a managed device, and the managed device can send alarms to the NMS.
- (Optional) Controlling the NMS's Access to the Device
- This section describes how to specify an NMS and manageable MIB objects for SNMP based communication between the NMS and managed device to improve communication security.
- (Optional) Configuring the Trap Function
- The device can be configured to send specified traps to the NMS, which facilitates fault locating. To enhance the trap transmission security, specify parameters for sending traps.
- (Optional) Configuring the Inform Function
- The router enabled with the SNMP agent function can generate two types of notifications: trap messages and Inform messages. Trap messages are messages alerting the NMS to a condition on the network. Inform messages are trap messages that include a request for confirmation of receipt from the NMS (Inform messages are resent until a reply is received). Inform messages are more reliable than trap messages.
- (Optional) Configuring SNMP Anti-Attack
- To defense against a user's attack on other users' passwords, configuring the SNMP blacklist function to improve security.
- Verifying the Configuration for a Device to Communicate with an NMS Using SNMPv2c
- After configuring basic SNMPv2c functions, verify the configuration.