Setting up the Software for DS3 Redundancy

Message Configuring for Redundancy

After installation, the host must send the Standby Line Card Configure message to the DS3 card that will be designated as the standby card. This message must indicate the Card Type and Action of the standby line card. For more information on this message, consult the API Reference.

Switchover Process

If the CSP Matrix Series 3 Card detects a line card failure, the host receives an Alarm message followed by a Card Status Report. The host then sends the Line Card Switchover message to indicate the slot number of the following:

• The line card that has failed--Originating Slot Number

• The standby line card--Destination Slot Number

After confirming that the two cards are of the same type, the CSP Matrix Series 3 Card instructs the Standby I/O to connect to the incoming/outgoing DS3 coaxial cable.

When the standby line card is in service, the host receives a Card Status Report. The host then configures the card the same way that the failed line card was configured, and the switchover is finished.