SNMP Manager

The IMG 2020 can be configured as an SNMP Manager. An SNMP Manager is an application that performs the operational roles of generating requests to modify and retrieve management information as well as receiving the requested information and trap-event reports that are generated by the SNMP agent. The SNMP manager provides the interface between the human network manager and the management system. SNMP management applications such as Castlerock (SNMPc), and AdRem can be used and have been verified to function with the IMG 2020. The IMG 2020 however, is not limited to the SNMP manager applications mentioned above, other SNMP applications can be used. The applications mentioned above have been verified to function with the IMG 2020. To configure an SNMP Manager, follow the procedures below

Web GUI Page

Dialogic > External Network Elements > SNMP Managers > New SNMP Manager

Maximum Objects

Up to three individual SNMP Manager objects can be created per SNMP Managers object.

Field Descriptions

SNMP User Name

Every agent maintains a User Table which is used to store all the users that have access to the system via SNMP. The username is a readable string representing the name of the user. The IMG 2020 currently does not support SNMPv3 so this field is optional. To enter a Username, click in the SNMP Username field and enter the name.

SNMP Community Name

The SNMP Agent could require that an SNMP Manager send a particular password with each message. The SNMP Agent would then verify whether the SNMP Manager is authorized to access MIB information. This is used for security in SNMPv2. Most often there is one community string which is used for read-only access to an SNMP Agent. The default value for this community string is often public. Using this community string like a password, the NMS can retrieve data from network elements. Click in the SNMP Community Name field and enter the name.

When configuring multiple SNMP Managers to communicate with one SNMP agent, the SNMP Community Name must have the same value for each SNMP Manager created.

SNMP Manager IP Address

Enter the IP address of the SNMP Manager. Click in the SNMP Manager IP address field and an enter an IP address. Hit either the Tab key or the decimal key to move between the IP address fields.

SNMP Trap Port

The port that SNMP traps are received on. By Default port 162/UDP is displayed as per standard RFC's for SNMP. To change the port click in the SNMP Trap port field and enter the new trap port number.

SNMP Version

The version of SNMP is displayed here. Click in the SNMP version field and a drop down menu will display the two versions of SNMP supported. Currently the IMG 2020 supports SNMP v1 and SNMP v2c.

SNMP Timeout (ms)

The time to wait for an ACK from an SNMP Manager before timing out. The value entered will be in milliseconds. The default is set to 1500 ms (1.5 seconds). If the value needs to be changed, click in the SNMP Timeout field and enter the new value.

Trap Retries

The number of times to re-send a trap to the SNMP manager. The Default is three. To change, click in the Trap Retries field and select from drop down menu 0-5

Trap Notify Type

When the Trap Notify Type is set to "inclusive", the SNMP traps are sent. When the Trap Notify Type is set to "exclusive", the SNMP traps are not sent. This is done in the Trap Notify Type field. The two selections from the drop down menu are:

inclusive - SNMP traps are sent. (Default)
exclusive - SNMP traps are not sent.