HANDLING PACKETS TRAVELLING FROM LOGICAL SERVICE ROUTERS (SRs) FOR ACTIVE-ACTIVE STATEFUL SERVICE INSERTION

A non-transitory computer-readable storage medium that includes a set of instructions which, in response to execution by a processor of a computer system, cause the processor to perform a method of packet handling for active-active stateful service insertion, wherein the method comprises:

• in response to detecting a first packet from a first active logical service router (SR), wherein the first active logical SR and a second active logical SR are both associated with the service endpoint address and configured to operate in an active-active mode,
• generating and storing state information that associates (a) the first active logical SR and (b) first tuple information specified by the first packet;
• and
• sending the first packet towards a destination capable of processing the first packet and responding with a second packet;
• and
• in response to detecting the second packet from the destination responsive to the first packet,
• selecting the first active logical SR over the second active logical SR based on the state information and second tuple information specified by the second packet;
• and
• sending the second packet towards the first active logical SR for processing according to a stateful service.

A computer system, comprising:

• a processor;
• and
• a non-transitory computer-readable medium having stored thereon instructions that, when executed by the processor, cause the processor to:
• in response to detecting a first packet from a first active logical service router (SR), wherein the first active logical SR and a second active logical SR are both associated with the service endpoint address and configured to operate in an active-active mode,
• generate and store state information that associates (a) the first active logical SR and (b) first tuple information specified by the first packet;
• and
• send the first packet towards a destination capable of processing the first packet and responding with a second packet;
• and
• in response to detecting the second packet from the destination responsive to the first packet,
• select the first active logical SR over the second active logical SR based on the state information and second tuple information specified by the second packet;
• and
• send the second packet towards the first active logical SR for processing according to a stateful service.