Adjusting the Configuration File for Receiving SNMP Traps

Use

To use the rectraps test tool, you require a configuration file to set up the receipt of SNMP traps: use this tool to test whether the SNMP traps were correctly sent (see Testing the Correct Sending of SNMP Traps with rectraps)

You define details about the receipt of the SNMP traps in the configuration file, such as the port at which the recipient is to listen.

Features

Make the following settings in the configuration file:

  • Section [SNMP_TRAPD]
    Parameter Meaning Default

    MIB_DIR

    Directory that contains the MIB files (Management Information Base); this is required to display the received traps correctly

    . (program's directory)

    LISTEN_PORT_<x>

    Transport protocol and port number with which the traps are received; by using different values of X=0,1,2..., traps can be received by different ports

    UDP:162

    DROP_AUTH

    With SNMP Version 3, the user must authenticate himself or herself; in the case of incorrect authorization, an Authentication Failure Trap is generated. You can avoid traps of this type being displaying by setting DROP_AUTH=1

    0
  • Section [SNMP_USER]

    If you are using SNMP version 3, define one or more SNMP users which receive the SNMP traps in this section. For SNMP versions 1 and 2c, leave this section empty.

    To define users, create a line with the following format for each user:

    createUser [-e <SECURITY_ENGINE>] <USER_NAME> <AUTH_PROTOCOL>

     <AUTH_PASSPHRASE>

    The following applies here:

    Parameter Meaning

    <SECURITY_ENGINE>

    Engine ID of the application from which the SNMP traps are to be sent; this parameter is only required if INFORM=0, since the engine ID is generated during the communication if INFORM=1

    <USER_NAME>

    Name of the user

    <AUTH_PROTOCOL>

    Procedure for authenticating the message (creation of a checksum used to ensure that the message was not changed); the MD5 (Message Digest 5) procedure is supported

    <AUTH_PASSPHRASE>

    User password

Example

The template rectraps.cfg for the configuration file is in the directory for_recipient of the SNMPLIB. It has the following content:

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