5 results about "Protocol Independent Multicast" patented technology

A network device in a network is provided. During operation, the network device can operate as a first rendezvous point (RP) of a Bidirectional Protocol Independent Multicast (PIM-BIDIR) instance and also as a first RP of a PIM sparse mode (PIM-SM) instance. Here, the PIM-BIDIR instance can be deployed in a first segment of the network and the PIM-SM instance can be deployed in a second segment of the network. The network device can receive information associated with a first source of a first multicast group from a second RP of the PIM-SM instance. Subsequent to receiving a first join request for the first multicast group via the PIM-BIDIR instance, the network device can send a second join request of the PIM-SM instance to the first source based on the received information and forward multicast traffic received from the first source via a multicast tree of the PIM-BIDIR instance.

A programmed network device and corresponding method are provided for rebuilding a multicast state upon experiencing a failure in a network using a protocol independent multicast (PIM) protocol. The method includes receiving updates to an outgoing list (Olist) for a given multicast route (mroute) at the network component and updating a PIM cache Olist in the network component with the received updates. During a state of recovering from the failure, the method includes determining whether the PIM cache Olist matches a centralized database Olist located in a centralized database. When a match is found, the method includes publishing an mroute state from the PIM cache to the centralized database.

Systems, devices, and methods support network traffic, for example, Broadcast, unknown Unicast, and link-local Multicast (BUM) traffic, in an overlay by utilizing Protocol Independent Multicast (PIM)-Source-Specific Multicast (SSM) in an underlay, while removing dependency on PIM-Any Source Multicast (ASM). A mapping system receives a mapping registration message and / or a mapping request message of a candidate device configured with a virtual network instance, for example, a Layer 2 Virtual Network Instance (L2VNI) implemented with layer 2 flooding. In response to receiving the mapping registration message, the mapping system transmits a mapping notification message to one or more member devices of an underlay group associated with the L2VNI. The mapping notification message indicates that the candidate device has joined the underlay group. In response to receiving the mapping request message, the mapping system transmits, to the candidate device, a list indicating that the member device(s) intends to transmit the network traffic.

The invention discloses a message attack testing method and a related device, and relates to the technical field of message attack testing, and the method comprises the steps: testing equipment generates a join message, and sends the join message to tested equipment; wherein the protocol for adding the message is protocol independent multicast; the tested device receives the join message and analyzes the join message to obtain the IP address of the test device; the tested equipment judges whether the multicast neighbor relation table contains the IP address of the test equipment or not; if the message contains the IP address of the test equipment, the tested equipment generates a multicast data forwarding table item based on the join message; wherein the multicast data forwarding table item is used for determining a forwarding path of the multicast data sent by the tested equipment; and if the IP address of the test equipment is not contained, the tested equipment generates a neighbor check failure result. According to the invention, attack of malicious messages can be prevented.

Techniques for operating a network device are provided. In some embodiments, a method may comprise: forwarding multicast data packets from a source in a first customer network to a receiver in a second customer network; detecting that another PE device is forwarding the multicast data packets, wherein: Protocol Independent Multicast (PIM) is enabled on supplemental bridge domain (SBD) logical interfaces of the PE device and the another PE device, the PE device and the another PE device are PIM neighbors, and the PE device and the another PE device communicate with each other and with the receiver using the PIM protocol through an Ethernet virtual private network (EVPN). The method may further comprise determining the another PE device is an assert winner from among the PE device and the another PE device based on at least one PIM assert message, the another PE device forwarding the multicast data packets.