Abstract: Embodiments of the present disclosure provide methods and apparatuses for network communication. A method comprises determining a link between an edge device of a second network and the first edge device of the first network is failed or the edge device of the second network is failed or an identifier of an Ethernet segment corresponding to the edge device of the second network has been changed; and advertising a first message including withdrawal of the Ethernet segment corresponding to the edge device of the second network and a corresponding substitution Ethernet segment of the second network, wherein the corresponding substitution Ethernet segment of the second network can be used by one or more other edge devices of the first network receiving the first message to switch routes associated with the Ethernet segment corresponding to the edge device of the second network to the corresponding substitution Ethernet segment of the second network.

Abstract: Embodiments of the disclosed techniques include methods, apparatus, and instructions for split-horizon filtering in an Ethernet virtual private network (EVPN), where an EVPN instance includes a plurality of provider edges (PEs) that forward traffic for a plurality of customer edges (CEs). In one embodiment, a method includes advertising a set of single Broadcast, Unknown unicast, or Multicast (BUM) identifiers, each in an Inclusive Multicast Ethernet tag (IMET) route from a PE of the EVPN instance to one other PE within the plurality of PEs, where each PE that shares an Ethernet segment with the PE is advertised with one unique BUM identifier; and forwarding by the PE, BUM packets from another PE of the EVPN instance to one or more CEs coupled to the PE based on a single BUM identifier encapsulated within the BUM packets.

Abstract: Embodiments of the present disclosure provide methods and apparatuses for network communication. A method comprises determining a link between an edge device of a second network and the first edge device of the first network is failed or the edge device of the second network is failed or an identifier of an Ethernet segment corresponding to the edge device of the second network has been changed; and advertising a first message including withdrawal of the Ethernet segment corresponding to the edge device of the second network and a corresponding substitution Ethernet segment of the second network, wherein the corresponding substitution Ethernet segment of the second network can be used by one or more other edge devices of the first network receiving the first message to switch routes associated with the Ethernet segment corresponding to the edge device of the second network to the corresponding substitution Ethernet segment of the second network.

Abstract: A method is implemented by a network device acting as a switch in a data plane of a software defined networking (SDN) network. The switch is communicatively coupled to a controller in a control plane of the SDN network, where the controller manages packet processing functionality of the switch. The method to provide data storage resource sharing information to the controller so that the controller can manage data storage resource utilization of the switch. The method includes determining which tables stored in the switch share a data storage resource of the switch and transmitting data storage resource sharing information to the controller, where the data storage resource sharing information includes an indication of the tables that share the data storage resource.

Abstract: A method is implemented by a network device acting as a switch in a data plane of a software defined net-working (SDN) network. The switch is communicatively coupled to a controller in a control plane of the SDN network, where the controller manages packet processing functionality of the switch. The method to provide data storage resource sharing information to the controller so that the controller can manage data storage resource utilization of the switch. The method includes determining which tables stored in the switch share a data storage resource of the switch and transmitting data storage resource sharing information to the controller, where the data storage resource sharing information includes an indication of the tables that share the data storage resource.