About SNMP
An SNMP V1 agent is a software component of the SNMP service that runs on an adapter modules and gives you access to diagnostic and management information for the modules. You can use SNMP browsers, network management software, and other tools to access this data.
In addition, the SNMP agent can be configured with the IP addresses of 1 or 2 devices (typically PCs that run network management software) to be the targets of event-driven trap messages. Such messages inform the management device of events like cold starts and the inability of the software to authenticate a device.
Access the SNMP Tab
Double-click the adapter module in the Control Expert configuration to access the SNMP tab.
The SNMP agent can connect to and communicate with 1 or 2 SNMP managers. The SNMP service includes:
authentication checking by the Ethernet adapter module of any SNMP manager that sends SNMP requests
management of events or traps
SNMP Parameters
These parameters are found on the Control Expert SNMP tab:
Field |
Parameter |
Description |
Value |
|---|---|---|---|
IP Address managers |
IP Address manager 1 |
The address of the first SNMP manager to which the SNMP agent sends notices of traps. |
0.0.0.0 ... 255.255.255.255 |
IP Address manager 2 |
The address of the second SNMP manager to which the SNMP agent sends messages of traps. |
||
Agent |
Location (SysLocation) |
device location |
31 characters (maximum) |
Contact (SysContact) |
information about the person to contact for device maintenance |
||
Enable SNMP manager |
unchecked (default): You can edit the Location and Contact parameters. checked: You cannot edit the Location and Contact parameters. |
checked/unchecked |
|
Community names |
Set |
password that the SNMP agent requires to read commands from an SNMP manager (default = Public) |
15 characters (maximum) |
Get |
|||
Trap |
|||
Security |
Enable “Authentication failure” trap |
unchecked (default): not enabled. checked (enabled): The SNMP agent sends a trap message to the SNMP manager if an unauthorized manager sends a Get or Set command to the agent. |
checked/unchecked |
Offline IP Address Verification
Offline tests are done to verify that the IP addresses of the managers do not include the following types of IP addresses:
multicast: 224.0.0.0 or higher
loopback: Any address that starts with 127
broadcast: 255.255.255.255