Patent application number | Description | Published |
20110255536 | METHOD, SYSTEM, AND APPARATUS FOR EXTRANET NETWORKING OF MULTICAST VIRTUAL PRIVATE NETWORK - A method, a system, and an apparatus for extranet networking of a multicast Virtual Private Network (VPN) are disclosed in the present invention. The method includes: establishing a multicast tunnel to a source VPN multicast instance and a multicast tunnel interface (MTI) connected to the multicast tunnel according to an added Share-Group address of a source VPN; sending an encapsulated Protocol Independent Multicast (PIM) protocol message to the MTI, forwarding the encapsulated PIM protocol message in a public network, and making the source VPN multicast instance generate a public network multicast data message of a Share-Group of the source VPN according to the encapsulated PIM protocol message; and decapsulating the received public network multicast data message of the Share-Group of the source VPN, and obtaining multicast data from the source VPN multicast instance. The present invention reduces the resource occupation of a router system, and alleviates the network load. | 10-20-2011 |
20130064245 | METHOD, APPARATUS AND SYSTEM FOR FORWARDING DATA UNDER PROTOCOL INDEPENDENT MULTICAST DUAL JOIN - Embodiments of the present invention relates to the field of communications, which complements a data forwarding method of a backup incoming interface under protocol independent multicast dual join in a PIM protocol, facilitates implementation of compatibility in various manufacturers, and reduces a restriction of a network topology on the application of the PIM protocol. The method includes: when a main incoming interface is up, forwarding, by a router, multicast data received from a backup incoming interface to the main incoming interface in a join state; and when the main incoming interface is down, before selecting a new main incoming interface and/or backup incoming interface, forwarding, by the router, the multicast data received from the backup incoming interface to all interfaces in a join state or to all other interfaces in a join state except the backup incoming interface. | 03-14-2013 |
20140082161 | METHOD AND DEVICE FOR TRANSFERRING BOOTSTRAP MESSAGE - The present invention discloses a method and a device for transferring a bootstrap message, and relates to the field of communications. The invention is intended to solve a problem in the prior art that a public network tunnel needs to be separately created for a bootstrap message, which consumes a tunnel resource. A technical solution provided in an embodiment of the present invention includes: receiving, by a first provider edge router, a bootstrap message sent by a bootstrap router; sending, by the first provider edge router, to a second provider edge router, a border gateway protocol BGP message including message content of the bootstrap message, so that after receiving the BGP message, the second provider edge router sends, to a customer edge router, the message content included in the BGP message. The embodiments of the present invention are applicable to a next generation multicast virtual private network. | 03-20-2014 |
Patent application number | Description | Published |
20120099422 | FAST CONVERGENCE METHOD, ROUTER, AND COMMUNICATION SYSTEM FOR MULTICAST - A fast convergence method, router, and communication system for multicast are disclosed. In the fast convergence method, router, and communication system for multicast, active and standby outgoing interfaces and active and standby next hops for each unicast route reaching a multicast source are calculated, and then active and standby paths are constructed according to the calculated active and standby outgoing interfaces and next hops; when the active path fails, a multicast stream sent by the multicast source is received through the standby path and forwarded; active and standby incoming interfaces and next hops of multicast do not need to be configured on the device statically, which may adapt to dynamic topology changes of the network and greatly expand the multicast stream protection scenarios. | 04-26-2012 |
20150124810 | METHOD, DEVICE, AND SYSTEM FOR CREATING BIDIRECTIONAL MULTICAST DISTRIBUTION TREE BASED ON INTERIOR GATEWAY PROTOCOL - Embodiments of the present invention provide a method, a device, and a system for creating a bidirectional multicast distribution tree based on an interior gateway protocol, the method includes: generating, according to a root address of a first node flooded by the first node through an IGP and a shortest path tree algorithm, a shortest path to another node with the first node as a source node, and constructing a flooding tree according to the shortest path; and when receiving layer 3 multicast group information flooded by an edge node, determining, according to the layer 3 multicast group information and a multicast group range that is supported by the first node, a flooding tree corresponding to each layer 3 multicast group, and performing pruning, according to the layer 3 multicast group information, to the flooding tree corresponding to each layer 3 multicast group, to generate a bidirectional multicast distribution tree. | 05-07-2015 |