Network route processor using state-based switchover

Details Network route processor using state-based switchover Network route processor using state-based switchover

2004-11-12

2008-08-12

D'Agosta, Stephen M (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S219000, C370S338000, C370S392000, C455S450000, C455S451000, C455S452100, C455S452200, C455S453000, C714S004110, C714S010000, C714S011000

Reexamination Certificate

active

07411925

ABSTRACT:
Embodiments of the present invention provide for switchover from an active processor to a standby processor in a route processor system. An up-to-date copy of information used by a supervisor process at the active processor is ensured by determining necessary event states. One type of event state includes message requests, processing and replies. Three basic types of communication between three different entities (blade, wireless domain services (WDS) and supervisor) are governed by three types of communication protocols: WLCCP between a blade and WDS, LCP between a supervisor and a blade, and checkpoint-type messages between two supervisors.

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