Systems and methods for path record handling in a fabric without host stack cooperation in a high performance computing environment. In a case where the subnet manager has determined homogenous subnet/fabric or semi-homogenous subnet/fabric status for the current topology, but is still receiving path queries, the subnet manager can use the relevant status to avoid any route evaluation and generate path record either only based on the configuration status of the requesting port in the homogenous case, or by comparing the configuration status of both ports in the semi-homogenous case.

A traffic controller device for distributing or otherwise controlling the distribution of routing information may be included in a telecommunications network. The traffic controller may receive routing tables from a plurality of network devices, such as one or more provider edge devices of the network. The traffic controller, upon receiving the routing information from the provider edge devices, may generate a routing table associated with each device providing the routing information. The traffic controller may also provide updates to one or more of the networking devices associated with the controller. The traffic controller may alter or update, at the traffic controller, the routing table associated with the target provider edge device based on the network policy. The routing information in the routing table for that device and maintained by the traffic controller may be updated with a new route or new local preferred parameter value.

Embodiments of the present disclosure relate to assisting forwarding of multicast traffic over Ethernet Virtual Private Network (EVPN) from a multicast source to a host multi-homed to multiple provider edge (PE) devices. Embodiments are based on the inclusion of an Ethernet Segment Identification (ESI) to EVPN type-6 routes advertised by PE devices which received a multicast Join message. Other PE devices receiving such routes are able to determine whether they belong to the ES identified by the ESI and to determine whether they are designated forwarders (DFs) for the host. Furthermore, PE devices which are the DFs are configured to re-originate the EVPN type-6 routes, i.e. re-send the advertisements, indicating themselves as DFs. This ensures that a remote PE device associated with the multicast source will also send multicast traffic to such DF PE devices, which, in turn, would allow the multicast traffic to successfully reach the host.

A packet processing method and a related apparatus are provided. The method includes: obtaining a first packet including first indication information, wherein the first indication information is used to indicate a data flow corresponding to the first packet; determining a target flow entry in an integrated flow table based on the first indication information, wherein the integrated flow table includes at least one flow entry, each flow entry includes a unified match entry and a comprehensive behavior entry, the unified match entry uniquely identifies a data flow, a unified match entry of the target flow entry identifies the same data flow as indicated by the first indication information; and performing an operation on the first packet based on a comprehensive behavior entry included in the target flow entry.

A communication structure comprises: a central node that is a communication data center of a network-on-chip and used for broadcasting or multicasting communication data to a plurality of leaf nodes; a plurality of leaf nodes that are communication data nodes of the network-on-chip and used for transmitting the communication data to the central node; and forwarder modules for connecting the central node with the plurality of leaf nodes and forwarding the communication data, wherein the plurality of leaf nodes are divided into N groups, each group having the same number of leaf nodes, the central node is individually in communication connection with each group of leaf nodes by means of the forwarder modules, the communication structure is a fractal-tree structure, the communication structure constituted by each group of leaf nodes has self-similarity, and the forwarder modules comprises a central forwarder module, leaf forwarder modules, and intermediate forwarder modules.

A method includes receiving, by processing circuitry of a first network device, an indication of a logical address associated with an interface to a second network device and adding, by the processing circuitry, an entry to a forwarding table of the first network device, the entry in the forwarding table specifying the logical address. The method further includes adding, by the processing circuitry, an entry to a resolver database of the first network device to which the entry in the forwarding table specifying the logical address points and resolving, by the processing circuitry, the logical address to a hardware address of the second network device. In response to determining an existing next hop entry of a next hop database of the first network device corresponds to the hardware address of the second network device, the method includes pointing, by the processing circuitry, the entry in the resolver database to the existing next hop entry in the next hop database without adding an additional entry to the next hop database for the second network device.

Virtual machine environments are provided in the switches that form a network, with the virtual machines executing network services previously performed by dedicated appliances. The virtual machines can be executed on a single multi-core processor in combination with normal switch functions or on dedicated services processor boards. Packet processors analyze incoming packets and add a services tag containing services entries to any packets. Each switch reviews the services tag and performs any network services resident on that switch. This allows services to be deployed at the optimal locations in the network. The network services may be deployed by use of drag and drop operations. A topology view is presented, along with network services that may be deployed. Services may be selected and dragged to a single switch or multiple switches. The management tool deploys the network services software, with virtual machines being instantiated on the switches as needed.

A subnet of a logically isolated network within a provider network may be shared between client accounts of the provider network. A request to share a subnet of a logically isolated network created for one client account with another client account may be received. A link between an account object for the other client account and a shared subnet object for the subnet may be stored. When a request to host a resource with the subnet is received, an evaluation of the graph may indicate whether the request to place the host is permitted. If permitted, the resource for the other client host may be hosted within the subnet.

The technology disclosed herein enables multi-path routing in virtual edge systems of a virtual network environment. In a particular embodiment, a method provides establishing a connection for a communication with a client outside of the virtual network environment through a first virtual edge system of a plurality of virtual edge systems. The method further provides generating state information about the connection that indicates properties of the connection with respect to the first virtual edge system and updating a state information base of the first virtual edge system with the state information. Also, the method provides transferring the state information to one or more other virtual edge systems of the plurality of virtual edge systems and updating respective state information bases of the one or more other virtual edge systems with the state information.

A relay device includes an acquisition unit that acquires, upon detection of a change of settings concerning a network environment of an external system or the relay device, information related to the change; a generation unit that generates setting change information for causing settings of the external system to match settings of the relay device with reference to the information acquired by the acquisition unit; and an information setting unit that causes the setting change information generated by the generation unit to be set in the external system by transmitting the setting change information to the external system.