The snmp-agent udp-port command changes the number of the port monitored by the SNMP Agent.
The undo snmp-agent udp-port command restores the configurations to default.
| Parameter | Description | Value |
|---|---|---|
| port-num | Specifies the number of the port to be monitored by an SNMP Agent. | The value is an integer that can be 161 or ranges from 1025 to 65535. |
By default, the SNMP Agent monitors port 161.
Usage Scenario
An SNMP Agent is an agent process on a device. By default, the SNMP Agent monitors port 161 on a device and responds to the NMS request, helping the NMS to manage the device. However, security risks exist because the monitored port is fixed. For example, all attack packets may be forwarded to that port, causing network congestion.
The snmp-agent udp-port command can be used to change the number of the port monitored by the SNMP Agent, to improve the security of the device.
Configuration Impact
After the snmp-agent udp-port command is used to change the port number, the SNMP Agent monitors a new port. The original SNMP connection is closed and the NMS has to connect to the device with a new port number.
Precautions
The specified port number must be the same as the one configured using the snmp-agent udp-port command. Otherwise, the NMS cannot be connected to the device.