Approaches for routing a packet in a network having multiple cells each comprising a parent node and one or more child nodes include establishing and storing an identifier table including one or more link identifiers associated with the child node(s); upon receiving the packet, generating a string of one or more bits based at least in part on the link identifier(s); and transmitting the packet and the generated string to the child node(s).

Approaches for recovering a connectivity failure in a network having multiple cells, each (i) supporting communication among multiple transceiver nodes, (ii) being capable of receiving and transmitting a packet and (iii) being associated with a parent node and one or more child nodes, include assigning a rank number to each of the nodes; upon detecting a connectivity failure of one of the nodes to its parent node, searching for a new parent node based at least in part on the rank numbers assigned to the nodes; and upon identifying the new parent node within a first predetermined time period, reconnecting said one of the nodes to the network by associating it with the new parent node.

Techniques are described to automatically activate and deactivate standby backup paths in response to changing bandwidth requirements in an adaptive private network (APN). The APN includes one or more regular active wide area network (WAN) links in an active mode and an on-demand WAN link in a standby mode. The on-demand WAN link is activated to supplement the conduit bandwidth when an available bandwidth of the conduit falls below a pre-specified trigger bandwidth threshold and the conduit bandwidth usage exceeds a usage threshold of a bandwidth of the conduit that is being supplied by the active paths (BWc). The on-demand WAN link is deactivated to standby mode when an available bandwidth of the conduit is above the pre-specified trigger bandwidth threshold and the conduit bandwidth usage drops below the usage threshold of BWc techniques for adaptive and active bandwidth testing of WAN links in an APN are also described.

A method of providing a path between bridges of a first network segment. The first network segment is configured using a Spanning Tree Protocol (STP). The method includes providing a second network segment interconnecting first and second bridges of said first network segment. The second network segment is operable to transmit frames adherent to a High-availability Seamless Redundancy (HSR) network control protocol and to discard the STP control data frames. The method also includes modifying at a first Redundancy Box (RedBox) STP control data frames to form modified data frames adherent to the HSR protocol. The method also includes modifying at a second RedBox, the modified data frames to re-form the STP control data frames.

System and method for supporting node role attributes in a high performance computing environment. In accordance with an embodiment, a node role attribute can comprise a vendor defined subnet management attribute. When a subnet manager attempts to discover a high performance computing environment, such as an InfiniBand subnet, or a switch topology, identifying a topology is quite complex when subnet manager can only observe connectivity, without context behind the connectivity (the roles of the different nodes in the connectivity). However, when a subnet has a node role attribute enabled, the subnet manager can map the interconnect more effectively as it can discover not only the connectivity during the initial sweep, but it can also discover the role of each node discovered, thus leading to a more efficient interconnect discovery.

Systems and methods for supporting SMP connectivity checks across virtual router in a high performance computing environment. In accordance with an embodiment, SMA model enhancements allow for the possibility to send a packet (i.e., SMP) that is addressed to a local router port. The SMA where the packet is addressed can receive the packet, and then apply a new attribute that defines that the requested information is on a remote node (e.g., connected by a physical link across subnets). In accordance with an embodiment, the SMA can operate as a proxy (receives a SMP and sends another request), or the SMA can modify the original packet and send it on as an inter-subnet packet.

A cloud-end data multicast method includes: obtaining a multicast packet, the multicast packet carrying a tenant identifier, a destination address, and a source address; and searching for a multicast group according to the tenant identifier and the destination address. The multicast group includes multicast members. The method also includes obtaining routes corresponding to the multicast members; generating a routing tree according to the routes corresponding to multicast members; and obtaining member addresses corresponding to the multicast members. The method also includes obtaining an address list containing addresses of target members that are identified to receive the multicast packet by performing address filtering according to the source address and the member addresses; encapsulating the multicast packet; and delivering the encapsulated multicast packet to the target members according to the address list and the routing tree.

Embodiments of the present disclosure generally relate to the field of electronic data communications, and more specifically to transport methods for hierarchical data networks in relation to providing address-less data transport of data packets. An order is introduced or associated with nodes to establish relationships, and the order may be stored in the form of a tree topology in a data structure. The order of nodes is thus known, and logic and/or other data sets, data payloads, etc., may be transmitted across the nodes, wherein the steps to execute the transmission are more efficient due to the properties of the ordered nodes. Each node in the plurality of nodes is comprised of a plurality of network interfaces, which through pairwise joining, forms a data network of a tree topology.

Multicast traffic in a virtual extensible local area network (VXLAN). In some embodiments, a method is provided. The method includes registering a network device as a virtual extensible local area network (VXLAN) tunnel endpoint (VTEP) of a VXLAN. The VXLAN includes an overlay network and the overlay network is implemented on an underlay network. The method also includes receiving multicast traffic from the multicast source. The method further includes transmitting the multicast traffic to one or more multicast receivers using the underlay network.

In one embodiment, a method is performed. A spine node in communication with a network may determine a subtree of a shadow cone of the spine node. The subtree may comprise a plurality of nodes and a plurality of links connecting pairs of the nodes. The spine node may determine a disaggregated route to a first leaf node to which a disaggregated prefix may be attached. The disaggregated route may be propagated to the plurality of the nodes of the subtree.