Gate controlled frame or packet replication and elimination function in cloud environment

A gate controller in a network for packet or frame replication and elimination, the gate controller comprising:

• at least one processor;
• at least one memory connected to the at least one processor and storing program code that is executed by the at least one processor to perform operations comprising:
• obtaining downstream information indicating which application instance in an application cluster is downstream active needing to send a stream of packets or frames in a downstream direction through the network;
• based on the downstream information, controlling a gate within a gate cluster that is associated with the downstream active application instance to be in an open state which operates to forward the stream of packets or frames in the downstream direction from the downstream active application instance to an associated packet or frame replication entity for replication and transmission via at least two disjoint paths through the network;
• and
• triggering the packet or frame replication entity to reset a sequence number generation function based on the downstream information.