In some examples, a switching system includes a plurality of fabric endpoints and a multi-stage switching fabric. A fabric endpoint of the system is configured to receive, via the switch fabric, a plurality of cell streams, wherein each cell of a cell stream of the plurality of cell stream is associated with a sequence number that defines a correct ordering of cells of the cell stream; assign subsequences of each cell stream of the plurality of cell streams to respective reorder engines of the fabric endpoint; concurrently reorder the assigned respective subsequences to produce respective ordered subsequences for the subsequences, wherein the ordered subsequences are ordered according to the correct ordering of the corresponding cell stream; interleave the respective ordered subsequences for each cell stream to produce reordered cell streams each having correctly ordered cells; and process each reordered cell stream according to the corresponding correct ordering of cells.

System and techniques for a hierarchical resource constrained networks are described herein. Device participating in the network are divided into groups. These groups correspond to vertices in a routing graph. A leader is selected amongst the devices in each group to function as a routing node connecting to other vertices of the routing graph. Client devices attach to leaf vertices in the routing graph. To reduce overhead in placing devices into the routing pools, a distributed hash table (DHT) can be used. Here, the routing pools can be given DHT IDs based on, for example, a structure of the routing graph. Device DHT IDs are used to assign them to the routing pools based on a distance metric. Routing, in this arrangement, can use the DHT IDs to efficiently compute routing pool hops when routing messages. This arrangement works well for publication-subscription (pub-sub) services.

Presented herein are techniques that enable Ethernet Virtual Private Networks (EVPNs) to support use cases where either the Layer 2 or Layer 3 route associated with a virtual endpoint is different after the virtual endpoint migrates/moves to a different location. In particular, a networking device running an overlay network detects that a virtual endpoint has migrated on the overlay network from a first computing device to a second computing device. The networking device determines a modified Layer 2/Layer 3 route for the virtual endpoint at the second computing device, as well as a sequence number for association with the modified Layer 2/Layer 3 route. The sequence number is determined based on a sequence number associated with a parent Layer 2 route for the modified Layer 2/Layer 3 route.

Methods for assisting data forwarding during convergence in a multi-homed network are disclosed. In one aspect, a first leaf node is configured to detect when a second leaf node advertises a set of Ethernet segments which are local to the first leaf and advertise reachability information for the second leaf, indicating itself as a backup for the second leaf during convergence. A spine node that receives advertisement messages from such first and second leaf nodes programs its routing table to indicate the direct route to the second leaf as the primary path and the route to the second leaf via the first leaf as a backup path to forward encapsulated packets destined to the second leaf. Upon failure of the second leaf, when the spine node receives data packets destined to the second leaf, the spine node sends the packets to the first leaf instead of the second leaf.

A system and method of transferring cells through a switch fabric having a shared memory crossbar switch, a plurality of cell receive blocks and a plurality of cell transmit blocks. The system determines, based on a number of cells queued up in respective output buffers in the cell transmit blocks, output buffers in the cell transmit blocks that can receive cells on a low latency path. The cells transferred include first cells that can be transferred on the low latency path and second cells that cannot be transferred via the low latency path. The first cells are transferred via a bypass mechanism in shared memory to the output buffers. The second cells are transferred by writing the second cells to shared memory, reading the second cells from shared memory and transferring the second cells read from shared memory to the output buffers in the cell transmit blocks.

Embodiments of the present disclosure disclose a Clos network load balancing method and apparatus. In certain embodiments, the method includes receiving, by a first switch, a first packet and determining, by the first switch, a third switch. The third switch is a switch in a second group of switches. The method includes performing, by the first switch, tunnel encapsulation on the first packet, a destination Internet Protocol (IP) address in a tunnel-encapsulated IP header being an IP address of a second switch. The method includes performing, by the first switch, Internet Protocol in Internet Protocol (IP-in-IP) encapsulation on the tunnel-encapsulated first packet and sending, by the first switch, the IP-in-IP encapsulated first packet.

Implementations of the present disclosure are directed to systems and methods for reducing the size of packet headers by using a single field to encode multiple elements. Instead of including separate fields for each element, one or more encoded fields may be used, each of which is decoded to determine two or more values for the data packet. A receiving device decodes the encoded data field to retrieve the two or more values.

A method is provided in one example embodiment and includes creating a segment organization, which includes a configuration profile. The method also includes attaching the configuration profile to a server in the segment organization. The method further includes sending the attached configuration profile to a database in a physical network.

An example system for satellite payload communications includes a digital channelizer and a regenerative communications subsystem (RCS). The digital channelizer includes a plurality of inputs for receiving a plurality of signals from a plurality of uplink beams and a plurality of outputs for outputting the plurality of signals. The RCS includes a plurality of inputs selectably coupled to the digital channelizer outputs to receive signals from selected ones of the digital channelizer outputs and a plurality of outputs selectably coupled to the digital channelizer inputs to transmit the processed signals to selected ones of the digital channelizer inputs. The RCS is configured to process selected ones of the plurality of signals to produce processed signals.

An example system for satellite payload communications includes a digital channelizer and a regenerative communications subsystem (RCS). The digital channelizer includes a plurality of inputs for receiving a plurality of signals from a plurality of uplink beams and a plurality of outputs for outputting the plurality of signals. The RCS includes a plurality of inputs selectably coupled to the digital channelizer outputs to receive signals from selected ones of the digital channelizer outputs and a plurality of outputs selectably coupled to the digital channelizer inputs to transmit the processed signals to selected ones of the digital channelizer inputs. The RCS is configured to process selected ones of the plurality of signals to produce processed signals.