Add and configure Channel Selector objects

The server-specific configuration portion of the SNMP Communication Driver hierarchy tree under the OI Server Manager starts at the Channel Selector object. This object lets you set server parameters for communication with agents (devices) in the hierarchy tree.

See Determine the hierarchical structure for more information about setting up your device hierarchy.

Add a Channel Selector object to your SNMP hierarchy

• In the console tree, right-click Configuration and then click Add Channel Selector Connection.

  The "New_ChannelSelector_000" Parameters view is displayed.

  

  Edit the object name to appropriately describe components of your specific hardware environment. If you do not rename the object at this time, a numeric sequencing system is applied. You can rename the hierarchy entry later.

Configure the Channel Selector object

The New_ChannelSelector_000 Parameters configuration view has two configurable parameters:

1. Maximum Items per request: Specify the maximum number of OID per network request. This limit can vary depending on the capability of the remote devices.

   Default value is 50, and the range is between 1 to 200.

2. Trap UDP Port: Specify the UDP port number to receive traps.The default value is 162.

3. Select Advanced. The Advanced settings dialog appears.

   The SNMP Communication Driver will function with the advanced settings defaults. It is unnecessary to change the default settings to complete your SNMP Communication Driver connectivity.

   

   The following parameters are configurable in the Advanced settings of the SNMP Communication Driver:

   Parameter	Default	Description
   Timeout: Start message	1000 ms	Specify the timeout for the message start.
   Protocol: Retries	1	Enter value to specify the number of attempts to execute the same communication before considering a communication error for this command.
   Simultaneous Requests: Maximum	1	Specify the maximum number of requests that can be sent simultaneously to all connected devices. If you plan to listen to traps sent by different devices (which are configured as device selector stations), leave the maximum and minimum at 1.
   Simultaneous Requests: Maximum per station	1	Specify the maximum number of requests that may be sent simultaneously to a single device. If you do not plan to listen to traps sent by different devices, you can set maximum and minimum values higher than 1.

   The following parameters are not applicable in the SNMP Communication Driver, or are pre-set and are not configurable in the SNMP Communication Driver. Descriptions are provided here for information purposes:

   Parameter	Description
   Timeout: End message	Reserved. Do not modify.
   Timeout: Interval between char	Specifies the timeout between each character.
   Timeout: Wait CTS	Specifies the timeout for the Clear to Send wait.
   Handshake: Control RTS	Specifies whether to use the Request to Send control.
   Handshake: Verify CTS	Specifies whether to use the Clear to Send verification type.
   Disable DTR	When disabled, no DTR signal is sent before starting a communication.
   Enable IR	Available only on Windows Embedded target systems. Enables use of Infrared interface (COM2 port) rather than a standard serial port to communicate with devices.
   Protocol: Station	Used to specify a slave address where required.
   Buffers length: Tx Buffer	Reserves memory for data transmission to the SNMP devices. Reserved. Do not modify.
   Buffers length: Rx Buffer	Reserves memory for data received from the SNMP devices. Reserved. Do not modify.