STATEFUL SERVICES ON STATELESS CLUSTERED EDGE

摘要

In order to enable dynamic scaling of network services at the edge, novel systems and methods are provided to enable addition of add new nodes or removal of existing nodes while retaining the affinity of the flows through the stateful services. The methods provide a cluster of network nodes that can be dynamically resized to handle and process network traffic that utilizes stateful network services. The existing traffic flows through the edge continue to function during and after the changes to membership of the cluster. All nodes in the cluster operate in active-active mode, i.e., they are receiving and processing traffic flows, thereby maximizing the utilization of the available processing power.

主权项

1. A method comprising:
performing a stateful service for a particular flow at a first node, wherein the first node is selected from a first set of nodes based on a first hash of the particular flow; receiving, at the first node, a packet belonging to the particular flow from a second node for performing the stateful service, wherein the second node is selected from a second set of nodes based on a second hash of the particular flow.