Forwarding method and forwarding device for multicast data messages based on multiple protocol label switching (MPLS)

A multicast data and packet forwarding technology, applied in the field of communication, can solve the problems of low forwarding efficiency of multicast data packets and failure to reflect the forwarding of multicast data packets, etc., and achieve the effect of improving forwarding efficiency

Active Publication Date: 2012-08-01
XINHUASAN INFORMATION TECH CO LTD
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Problems solved by technology

[0006] In the above process, there are multiple outgoing interfaces in R2, and packets need to be copied and labeled for each outgoing interface. This will

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  • Forwarding method and forwarding device for multicast data messages based on multiple protocol label switching (MPLS)
  • Forwarding method and forwarding device for multicast data messages based on multiple protocol label switching (MPLS)
  • Forwarding method and forwarding device for multicast data messages based on multiple protocol label switching (MPLS)

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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] For the convenience of description, in the following multicast transmission path from the multicast source to the multicast receiver, the multicast LSR directly connected to the multicast source is called the head (Ingress) node, and the multicast LSR directly connected to the multicast receiver is called the ingress node. LSR is called the tail (egress) node, and other multicast LSRs are called forwarding (Transit) nodes.

[0028] The main idea of ​​the present invention is: assign a unique multicast label to the multicast FEC of the multicast transmission path, and notify the multicast label to all multicast LSRs in the multicast transmission path; each multicast LSR in the multicast transmission path After the multicast LSR o...

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Abstract

The invention provides a forwarding method and a forwarding device for multicast data messages based on a multiple protocol label switching (MPLS). The method includes that specialized multicast labels are assigned to multicast forwarding equivalence class (FEC) of a multicast transmission path, the multicast labels are notified to all nodes of the multicast transmission path; when each of the multicast labels assigned to the multicast FEC are obtained by each of nodes in multicast transmission path, a multicast label forwarding table related to the multicast labels and corresponding to a multicast forwarding table of the multicast FEC is established; and the multicast data messages forwarding are performed according to the multicast label forwarding table. According to the forwarding method and the forwarding device for the multicast data messages based on MPLS, the forwarding efficiency of the multicast data messages can be improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an MPLS (multi-protocol label switching)-based multicast data message forwarding method and device. Background technique [0002] MPLS is a technology that uses labels to guide high-speed and efficient data transmission on an open communication network. By applying MPLS technology, the forwarding efficiency of unicast data packets can be effectively improved. However, high forwarding efficiency cannot be achieved for multicast data packets. . [0003] In the prior art, the realization principle of the forwarding of the multicast data message based on MPLS is the same as that of the forwarding of the unicast data message: the downstream label switching router (LSR) distributes an incoming label to the upstream LSR, and the upstream LSR sends the downstream label to the upstream LSR. The label distributed by the LSR is bound to the corresponding outgoing interface; when forw...

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Application Information

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IPC IPC(8): H04L12/56H04L45/16H04L45/50
Inventor 陈锦军
Owner XINHUASAN INFORMATION TECH CO LTD
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