What is the UDP port number for SNMP agents?

The UDP port number for Simple Network Management Protocol (SNMP) agents is 161. SNMP is widely used for network management, enabling the monitoring and control of network devices such as routers, switches, servers, and printers.

In this context, port 161 is designated specifically for SNMP agents to listen for requests from SNMP managers. When an SNMP manager sends a request, it targets this port to interact with the SNMP agents on the monitored devices. Through this interaction, the SNMP manager can retrieve data, configuration details, and status updates of various network elements.

The other port numbers listed serve different purposes. For instance, port 69 is assigned to the Trivial File Transfer Protocol (TFTP), port 162 is used for SNMP traps (which are notifications sent from agents to managers), and port 514 is associated with the Syslog protocol, which is used for logging. Each of these protocols facilitates different functions in network management and communication, further distinguishing port 161 as the designated port for standard SNMP agent communications.