Abstract: Techniques disclosed herein provide an approach for providing throughput resilience during link failover when links are aggregated in a link aggregation group (LAG). In one embodiment, failure of a link in the LAG may be detected, and a Transmission Control Protocol/Interact Protocol (TCP/IP) stack notified to ignore packet losses and not perform network congestion avoidance procedure(s) for one round-trip timeout (RTO) period. In a virtualized system in particular, a virtual switch may be configured to generate events in response to detected link failures and notify TCP/IP stacks of a hypervisor and/or virtual machines (VMs) of the link failures. In turn, the notified TCP/IP stacks of the hypervisor and/or VMs may ignore packet losses and not perform network congestion avoidance procedure(s) for one RTO period.

Abstract: Exemplary methods, apparatuses, and systems of packet processing utilize an ordered sequence of packet processing services to process a packet having a destination. The packet is a native, non-proprietary network packet that uses a standard network protocol and standard packet format. The packet processing services include a plurality of physical and/or virtual services. The ordered sequence is determined by applying one or more policy rules. A virtual service insertion platform manages routing of the packet to each service in the ordered sequence of services until all services have processed the packet, then the packet is forwarded to the packet destination.