Method and device for realizing multicast in hierarchy of virtual private LAN (Local Area Network) service (H-VPLS) network

A virtual private, service network technology, applied in the field of multicast, can solve the problem of inability to complete pruning operations, and achieve the effect of improving multicast forwarding performance and avoiding loops

Active Publication Date: 2014-01-22
HUAWEI TECH CO LTD
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Problems solved by technology

However, in the scenario where PE-AGG is the root and all UPEs are leafs to establish a P2MP LSP, when UPE1 needs to access UPE3, after the unknown unicast traffic sent by UPE1 reaches PE-AGG, PE-AGG directly forwards the unknown unicast traffic to Import P2MP LSP; because the replication point of the traffic ...

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  • Method and device for realizing multicast in hierarchy of virtual private LAN (Local Area Network) service (H-VPLS) network
  • Method and device for realizing multicast in hierarchy of virtual private LAN (Local Area Network) service (H-VPLS) network
  • Method and device for realizing multicast in hierarchy of virtual private LAN (Local Area Network) service (H-VPLS) network

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[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] figure 2 It is a flowchart of a method for implementing multicast in a layered VPN service network provided by an embodiment of the present invention. The method can be applied to the scenario where multicast message forwarding is required when the P2MP LSP technology is adopted in the H-VPLS network. Such as figure 2 As shown, the met...

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Abstract

The embodiment of the invention provides a method and a device for realizing multicast in hierarchy of a virtual private LAN (Local Area Network) service (H-VPLS) network. According to the method and the device for realizing multicast in the H-VPLS network provided by the embodiment of the invention, a P2MP LSP (Point-to-MultiPoint Layered Service Provider) is established for at least two PW (Pseudo Wire) attributes corresponding to the same VSI (Virtual Switch Instance) respectively, and all leaf nodes included by each P2MP LSP are different and all comprise root nodes; when a multicast message to be forwarded transmitted by a source node is received, the multicast message to be forwarded is forwarded by other P2MP LSPs other than the P2MP LSP with the source node as the leaf node, so that a loop is prevented from being formed during forwarding of the multicast message, and the multicast forward performance during adoption of the P2MP LSP technology in the H-VPLS network is improved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method and device for implementing multicast in a Hierarchy of Virtual Private LAN Service (H-VPLS for short) network. Background technique [0002] Virtual Private LAN Service (VPLS) is a Layer 2 Virtual Private Network (VPN) technology based on Multi-Protocol Label Switching (MPLS) and Ethernet technology. VPLS can enable users to simultaneously access the network from multiple geographically dispersed nodes and access each other, and make the connection effect between each node as if it is connected to a LAN. When VPLS forwards BUM (broadcast, unknown unicast, multicast) messages, it uses copy processing at the ingress node, and copies BUM messages on pseudowires (Pseudo Wire, PW). If there are multiple PWs using a shared When using a common path, multiple BUM packets will appear on the shared path, resulting in a waste of bandwidth. The traditional V...

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Application Information

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IPC IPC(8): H04L12/761H04L12/723H04L12/46H04L45/16H04L45/50
Inventor 王海波
Owner HUAWEI TECH CO LTD
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