61200290L1-1G 7-1S ECTION 7, C IRCUIT AND N ETWORK R EDUNDANCYSection 7Circuit and Network Redundancy1. INTRODUCTIONThe MX2800 provides backup measures of protection for circuit failure. The following subsectionsdescribe the possible modes of operation:• Nonredundant Mode on page 7-1 offers no backup protection• Circuit Failure Recovery Mode on page 7-2 furnishes backup protection in the event of controller cardfailure• Circuit and Network Failure Recovery Mode on page 7-3 provides the most complete mode of circuitand network protection.The descriptions given include illustrations and suggested configuration settings.NOTEThe settings may need modification based on your network configuration.2. NONREDUNDANT MODEIn Nonredundant Mode, the MX2800 houses only one controller card. There is no failure protection. In theevent of a failure, an alarm is initiated and the front panel LEDs reflect the condition. See Figure 7-1 onpage 7-1 for an illustration.Figure 7-1. Nonredundant Mode
