Routing setting method and multicast networking system
A multicast group and routing technology, applied in the field of communication, can solve problems such as packet loss and failure of multicast data to pass through
Active Publication Date: 2021-04-06
NEW H3C TECH CO LTD
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[0004] However, when the routing device receives multicast data, it will first perform RPF (Reverse Path Forwarding, reverse path forwarding) check on the multicast data to determine whether the interface receiving the multicast data is between the routing device and the multicast source. If it is on the shortest path, the multicast data will be forwarded, and the multicast data forwarded from the backup forwarding path will inevitably fail the RPF check, which will eventually lead to packet loss
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[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments It is a part of the embodiments of the present disclosure, but not all of them. The components of the disclosed embodiments generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0024] Accordingly, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary sk...
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The present disclosure provides a routing setting method and a multicast network, and the multicast network includes a first multicast routing device and a target convergence point corresponding to a target multicast group. The target rendezvous point receives the multicast traffic forwarded by the first multicast routing device through different paths, and when the received multicast traffic is detection traffic including the detection flag, it searches the target rendezvous point for the RPF corresponding to the source address of the detection traffic Route and multicast route corresponding to the destination address of the detection traffic; in the found RPF route, set the interface where the target convergence point receives the detection traffic as the backup RPF interface, and in the found multicast route, set the target convergence point to receive The interface of the detection traffic is set as the backup inbound interface, so that the multicast traffic whose forwarding path is consistent with the detection traffic can pass the RPF check at the target rendezvous point.
Description
technical field [0001] The present disclosure relates to the technical field of communications, and in particular, to a routing setting method and a multicast networking system. Background technique [0002] PIM-SM (Protocol Independent Multicast-Sparse Mode, protocol-independent multicast-sparse mode) is a multicast routing protocol in sparse mode. The core task of realizing multicast forwarding is to construct and maintain RPT (Rendezvous Point Tree, shared tree ). The RPT selects a routing device as a common root node RP (Rendezvous Point, rendezvous point), and the receiver of the request multicast data and the multicast source that sends the multicast data interact with the RP to realize the forwarding of the multicast data. [0003] The multicast data sent by the multicast source to any multicast group is first sent to the RP corresponding to the multicast group, and then the RP distributes the multicast data along the RPT of the multicast group. When the forwarding ...
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IPC IPC(8): H04L12/703H04L12/721H04L12/741H04L12/927H04L45/28H04L45/74H04L47/80
CPCH04L45/28H04L45/38H04L45/745H04L47/806
Inventor 林慧王伟
Owner NEW H3C TECH CO LTD