Adjusting the Configuration File for Receiving SNMP Traps

You require a configuration file in the following cases to set up the receiving of SNMP traps:

• If you are using the test tool rectraps; use this tool to test whether SNMP traps were sent correctly (see Testing the Correct Sending of SNMP Traps with rectraps)
• When receiving the SNMP traps as a function of the CCMS agents (see Setting Up the Sending and Receiving of SNMP Traps Using CCMS Agents)

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.

Make the following settings in the configuration file:

• Section [SNMP_TRAPD]

  Parameter	Description	Default
  MIB_DIR	Directory that contains the MIB files (Management Information Base); this is required to display the received traps correctly Note Change this value to the path of the MIBS directory.	. (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>

  When making these specifications, the following applies:

  Parameter	Description
  <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>	Password of the user

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

[SNMP_TRAPD]DROP_AUTH=0MIB_DIR=.LISTEN_PORT_0=udp:162[SNMP_USER]createUser myuser MD5 mypasswordcreateUser -e 0x0102030405 myuser1 MD5 mypassword1

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