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Configuring Intrachassis LSQ Redundancy

The physical interface type rlsq specifies the pairings between primary and secondary lsq interfaces to enable redundancy. To configure a backup lsq interface, include the redundancy-options statement at the [edit interfaces rlsqnumber] hierarchy level:




redundancy-options {

primary lsq-fpc/pic/port;

secondary lsq-fpc/pic/port;
(hot-standby | warm-standby);
}

For the rlsq interface, number can be from 0 through 1023. If the primary lsq interface fails, traffic processing switches to the secondary interface. The secondary interface remains active even after the primary interface recovers. If the secondary interface fails and the primary interface is active, processing switches to the primary interface.

The hot-standby option is used with one-to-one redundancy configurations, in which one working PIC is supported by one backup PIC. It sets the requirement for the failure detection and recovery time to be less than 5 seconds. The behavior is revertive, but you can manually switch between the primary and secondary PICs by issuing the request interfaces (revert | switchover) rlsqnumber operational mode command.

The warm-standby option is used with redundancy configurations in which one backup PIC supports multiple working PICs. Recovery times are not guaranteed, because the configuration must be completely restored on the backup PIC after a failure is detected.

Note: The hot-standby option is supported only with MLPPP and CRTP configurations. The warm-standby option is also supported with LSQ FRF.15 and FRF.16 bundle configurations and with L2TP and flow monitoring services.

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