In one embodiment, an offload platform is an compute platform, adjunct to a router or other packet switching device, that performs packet processing operations including determining an egress forwarding value corresponding to the next-hop node of the packet switching device to which to send an offload-platform processed packet. The offload platform downloads forwarding information from the router, and augments it, such as, but not limited to, representing interfaces of the router as identifiable virtual interface(s) on the offload platform, and including each of one or more next-hop nodes of the router represented as an identifiable virtual adjacency and identifiable tunnel (e.g., identified by the egress forwarding value). In one embodiment, the egress forwarding value is an Multiprotocol Label Switching (MPLS) label or Segment Routing Identifier. The router identifies packets of certain packet flows to send to the adjunct offload platform, rather than processing per its routing information base.

The embodiments described herein provide mechanism that allows an embedded router software image and an application to run in the user application memory space of a general purpose computer. A connection is established with an operating system device configured to route packets between the application and the software router and route, by the software router, network traffic to and from the application by way of the connection. The application may be connected to other applications in the user application memory space or connected to applications that are external to the general purpose computer.

A system provisions global logical entities that facilitate the operation of logical networks that span two or more datacenters. These global logical entities include global logical switches that provide L2 switching as well as global routers that provide L3 routing among network nodes in multiple datacenters. The global logical entities operate along side local logical entities that are for operating logical networks that are local within a datacenter.

An example programmable integrated circuit (IC) includes a processor, a plurality of endpoint circuits, a network-on-chip (NoC) having NoC master units (NMUs), NoC slave units (NSUs), NoC programmable switches (NPSs), a plurality of registers, and a NoC programming interface (NPI). The processor is coupled to the NPI and is configured to program the NPSs by loading an image to the registers through the NPI for providing physical channels between NMUs to the NSUs and providing data paths between the plurality of endpoint circuits.

An example programmable integrated circuit (IC) includes a processor, a plurality of endpoint circuits, a network-on-chip (NoC) having NoC master units (NMUs), NoC slave units (NSUs), NoC programmable switches (NPSs), a plurality of registers, and a NoC programming interface (NPI). The processor is coupled to the NPI and is configured to program the NPSs by loading an image to the registers through the NPI for providing physical channels between NMUs to the NSUs and providing data paths between the plurality of endpoint circuits.

A method for adjusting capacity in a multi-stage routing network includes monitoring a number of available connections between a router in a first stage of a multi-stage router network and one or more routers in a second stage of the multi-stage router network. Each of the stages of the multi-stage router network may include a plurality of routers. The method may also include detecting that the number of available connections falls below a threshold number. A notification can be sent to one or more routers in a third stage of the multi-stage router network that the router in the first stage is deprioritized. The one or more routers in the third stage can be operated so that communications to the first stage are routed to one or more other routers in the first stage.

Methods and apparatus for processing data packets in a computer network are described. One general method includes receiving a data packet; examining the data packet to classify the data packet including classifying the data packet as a L2 or L3 packet and including determining at least one zone associated with the packet; processing the packet in accordance with one or more policies associated with the zone; determining forwarding information associated with the data packet; and if one or more policies permit, forwarding the data packet toward an intended destination using the forwarding information.

A method and apparatus for assembling a component in a router are provided. The router includes at least one reconfigurable component, the at least one reconfigurable component has a unique function, the method includes: obtaining attribute information of the at least one reconfigurable component in the router, wherein the attribute information comprises information on an importance and/or a using frequency of the at least one reconfigurable component in the router; coding the at least one reconfigurable component based on Huffman Coding to generate a Huffman code according to the attribute information of the at least one reconfigurable component; selecting the at least one reconfigurable component, and assembling the selected reconfigurable component to realize a routing function and to form an assembly code; and generating a routing paradigm table according to a user security requirement and the assembly code, such that the router performs the routing function according to the routing paradigm table.

An example network device includes a primary node and a standby node. The primary node engages in a routing session with a peer network device via a connected socket. The standby node includes one or more processors implemented in circuitry and configured to execute a backup replication module to receive, from the primary node, data to be written to a backup socket for the connected socket, and, in response to a switchover, to send a representation of the data to the peer network device via the backup socket.

An example network device includes a primary node and a standby node. The primary node engages in a routing session with a peer network device via a connected socket. The standby node includes one or more processors implemented in circuitry and configured to execute a backup replication module to receive, from the primary node, data to be written to a backup socket for the connected socket, and, in response to a switchover, to send a representation of the data to the peer network device via the backup socket.