Citrix Systems, Inc.

Narendra Kataria

Ramanjaneyulu Y Talla

Sandhya Gopinath

Mohit Prakash Saxena

Aakash Jain

Anshul Kumar

Described embodiments provide for minimizing packet discarding in case of spiky traffic reception by using adaptive buffers. Transmission buffers may be adjusted based on traffic behavior, with the buffer size dynamically expanding or shrinking as needed, providing a cushion to hold extra packets when a buffer drain rate is slower than the buffer arrival rate.

Systems and methods to minimize packet discard in case of spiky receive traffic

The present disclosure describes systems and methods for propagating port state to intermediary devices of a cluster in a static link aggregation environment. The methods and systems include a cluster comprising a plurality of intermediary devices in communication with a network device via a static link aggregation comprising aggregated ports from different intermediary devices of the cluster. A first device of the static link aggregation is configured to detect that a health of the first device is below a predetermined threshold and, responsive to the detection, identify one or more ports in the aggregated ports as down. A second device of the link aggregation is configured to, responsive to the identification, remove the ports from a distribution list for the static link aggregation. Upon detection that a health of a device is above a predetermined threshold, the first device may identify the ports as up.

Systems and methods for propagating health of a cluster node

Emulating a NIC for packet transmission on hardware RSS unaware NICs in a multi-core system enables each of a plurality of slave packet engines to emulate a NIC for packet transmissions locally even though the actual NIC transmissions from the queue are handled by a master packet engine only. Each slave packet engine treats a local software-implemented transmission queue as a device queue and uses the local queue to keep track of status of data from the packet engine in the device output queue, handled by the master packet engine on behalf of the slave packet engines. As the master packet engine transmits the data from the queue and the status of the queue changes, the master packet engine and the slave packet engines may use pointers to keep track of which data packets are transmitted, which data packets are drained and which data packets are still in the queue.

Systems and methods of emulating a NIC for packet transmission on hardware RSS unaware NICS in a multi-core system

Systems and methods for emulating a NIC for packet transmission on hardware RSS unaware NICs in a multi-core system

The present disclosure describes systems and methods for using a cluster-based actor identifier in link aggregation control protocol communications between an actor comprising an intermediary device of a cluster of intermediary devices and a non-cluster aware device. The system and methods include a cluster of intermediary devices in communication with a link aggregation control protocol enabled network device that is unaware of the cluster. A first intermediary device of the cluster generates an actor identifier, based on a cluster identifier that identifies the cluster, for each of the intermediary devices of the cluster to use as a system identifier for link aggregation control protocol communications and one or more intermediary devices transmit to the network device a link aggregation control protocol data unit that advertises the actor identifier as the system identifier for establishing a link aggregation between the cluster and the network device.

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Karnataka, India

Narendra Kataria