Sms Services > Load Balancing - Multitech MultiModem iSMS SF100-G Administrator's Manual

Chapter 4 – Using the MultiModem iSMS Web Interface
SMS Services > Load Balancing
This feature provides a single interface to your Send SMS application when multiple units are needed for increased
throughput. When multiple iSMS units are available on a network, they can be set up to work together to share the
outgoing message load. This is achieved by designating one unit to be the Master and subsequent units (up to 4) to be
Slaves. Your Send SMS application does not need to make any changes when Load Balancing is enabled. The send SMS
application still uses either of the send APIs (HTTP or TCP) to submit SMS messages for sending.
When the amount of "pending" messages within the Master reaches a system threshold, the Slave units are polled by the
Master for availability, and if so available, pending messages are distributed dynamically to the slaves. Once initiated, the
Master unit uses the slaves until the send queue is reduced sufficiently below the threshold. Your Send SMS Application
can not specify the slave unit through which a particular message is sent.
The number of pending messages needed to surpass the threshold is a variable based on the length of each message
(character count per message) and the MultiModem iSMS model number. The threshold is increased as the model
number increases.
Load Balancing
Status
Check the Status box on every unit that is participating in Load Balancing and click Save.
Note: When using Load Balancing, each Slave unit must have the TCP API Status enabled. The Master unit communicates
to the slaves via TCP API access.
Slave Configuration
Slave Configuration information is only to be defined in the Master unit.
Slave#
The slave# tabs are used to identify which units are slave units and login information.
Status
This box is checked only on the Master unit. Uncheck this checkbox for all Slave units.
Username
Enter the valid administrator username needed to access the Slave unit.
Password
Enter the valid administrator password needed to access the Slave unit.
IP Address
Enter the IP Address of the Slave unit.
TCP API Port
Enter the open port used to access the Slave unit.
53 MultiModem® iSMS System Administrator's Guide