SYSTEM AND METHOD FOR MAINTAINING STATE SYNCHRONIZATION IN REDUNDANT IMA GROUP PROTECTION SWITCHING

摘要

A system and method are provided for redundancy protection of IMA groups. A protection IMA state machine is synchronized with a working IMA state machine before a hot redundant switch is made. The SCCI number is transmitted directly from the working IMA state machine to the protection state machine over an IMA synchronization link, while delta information is transmitted from the working IMA state machine for use by the protection IMA state machine to derive the frame sequence number.