snmp-agent trap source-port

Function

The snmp-agent trap source-port command specifies the number of a source port that sends trap messages.

The undo snmp-agent trap source-port command restores the default number of the source port that sends trap messages.

By default, the source port that sends trap messages is a random port.

Format

snmp-agent trap source-port port-number

undo snmp-agent trap source-port

Parameters

Parameter	Description	Value
port-number	Specifies a number for a source port that sends trap messages.	The value is an integer ranging from 1025 to 65535.

Parameter

Description

Value

port-number

Specifies a number for a source port that sends trap messages.

The value is an integer ranging from 1025 to 65535.

Views

System view

Default Level

3: Management level

Task Name and Operations

Task Name	Operations
snmp	write

Usage Guidelines

Usage Scenario

To improve network security, run the snmp-agent trap source-port command to configure a specific port to send trap messages. Therefore, the user terminal's firewall allows packets with the specified port number to pass.

Precautions

If a device sends packets to the NMS in Inform mode, and the snmp-agent trap source-port command is run to specify the source port number, SNMP uses the new source port instead of the original port to receive response packets from the NMS. As a result, SNMP cannot use the original port to receive response packets from the NMS, and packets are retransmitted.

Example

# Set the number of source port that sends SNMP agent trap messages to 1057.

<HUAWEI> system-view
[~HUAWEI] snmp-agent trap source-port 1057
Warning: This operation will change the source port number of all trap packets.
Continue?  [Y/N]:y
Info: Succeeded in changing the source port number of trap packets. 
[*HUAWEI]