SNMP Trap Receiver wizard
Use the SNMP Trap Receiver wizard to configure the SNMP Trap Receiver. It will allow you to:
• Turn on/off the SNMP Trap Receiver
• Set the port number for the receiver
• Specify whether to accept all v1/v2c traps or only traps with certain community strings
• Specify whether to accept all v3 traps or only authenticated traps
• Create / delete SNMP v1/v2c community strings or SNMP v3 credentials
• Community strings/credentials stored on NetIM are encrypted
Perform the following procedure to enable and configure the SNMP Trap Receiver.
To enable and configure the SNMP Trap Receiver
1. Choose Configure > All Settings > Integrate: SNMP Trap Receiver. The SNMP Trap Receiver Settings wizard appears.
2. SNMP Trap Receiver:
– Click On to turn on the SNMP Trap Receiver.
– Click Off to disable the SNMP Trap Receiver.
3. Port Number—Set the port number for the Trap Receiver to listen on. The default setting is 162.
4. SNMP v1/v2c Traps—Select whether to accept all SNMP v1/v2c traps or only authenticated traps.
5. SNMP v3 Traps—Select whether to accept all readable SNMP v3 traps or to accept only authenticated traps.
– To accept all readable traps means that if a trap is not using an authentication method, but NetIM has the credentials to read it, it will be accepted.
– To accept only authenticated traps means to only accept traps that use an authentication method, provided NetIM has valid credentials for them.
6. Click Next.
(This step appears only if you selected Accept Only Authenticated Traps under SNMP v1/v2c Traps in Basic Settings.)
7. Enter the community strings you want to use to validate SNMP v1/v2c traps.
To hide the display of community strings, select Hide Community Strings in the lower-right.
The community string list in the Trap Receiver does not affect the community string list in the Global Discovery Settings.
To add community strings, use one of the following methods:
– Enter a community string in the Community String field and click Add.
– Click the Load From File icon (above the community string list), and select a file to import.
For examples and a description of the requirements for this file, refer to the snmpTrapCommStrings.txt file, which is located on NetIM core in the following directory:
<install_dir>/input/trapReceiver
8. Click Next.
Enter the credentials you would like to use to validate SNMP v3 traps. Only the User Security Model (USM) is supported by NetIM.
To hide the display of passwords, select Hide Passwords in the lower right.
The credential list in the Trap Receiver does not affect the credential list in the Global Discovery Settings.
9. Add credentials using either of the following methods:
• Enter credentials in the following text fields and click Add.
– Security Level—Select the security level of the trap to be received.
– Username—Enter the username used to authenticate the trap.
– Auth Protocol—Select the authorization protocol of the trap.
– Auth Password—Enter the password used to authenticate the trap.
– Priv Protocol—Select the privacy protocol of the trap.
– Priv Password—Enter the privacy password used to authenticate the trap.
– Engine ID: Enter the engine ID of the device that is sending the trap. If you do not know the Engine ID, you can enter the Host and Port Number and click Get Engine ID.
Engine IDs are required by SNMP for authenticating and decrypting v3 traps. They may be either preconfigured on your devices or configured by your network administrator. If your network administrator has configured the engine ID for your devices, you will need to acquire that information before entering credentials.
– Host: The hostname or IP address of the device that is sending the traps.
– Port: The SNMP communication port of the device that is sending the traps.
• Click the Load From File icon above existing credentials list, and select a file to import.
For examples and a description of the requirements for this file, refer to the snmpTrapv3UsmCredentials.txt file, which is located in <install_dir>/input/trapReceiver.
10. Click Next.
11. Review the SNMP Trap Receiver settings. If you need to make a change, click Previous, if not click Finish.