关键词: TCP 容错 Active Replication 同步

Abstract:

It is an effective way to mask the faults of active TCP connection by providing high availability network services. This paper proposes a new fault- t olerant scheme for TCP connection, which is based on active replication. The technique uses a dispatch server and an aggregate server to synchronize mul ti-images for the same active TCP connection with the clients in order to mask the faults of the TCP connection. The experimental results show that the   technique not only provides high availability of network services, but also has less recovery time and lower overhead.

Key words: （TCP, fault-tolerance, active replication, synchronization）