Message forwarding method and device

A message forwarding and message technology, applied in the field of communications, can solve the problems of inability to properly configure path protection and resource waste, and achieve the effect of reasonably and effectively configuring path protection and avoiding resource waste.

CN107171977AActive Publication Date: 2017-09-15ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-09-15

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Abstract

The invention provides a message forwarding method and device. The method comprises the steps of: receiving a message to be sent to BFER (Bit-Forwarding Egress Routers) in BIER-TE (Bit Index Explicit Replication-Traffic Engineering), and a route identifier, wherein the route identifier is used for indicating a primary route and a standby route for sending the message to a next hop bit of BFR(Bit Forwarding Router) of a first BFR from the first BFR; according to the router identifier, determining a bitstring for forwarding the message to the BFER; and filling the bitstring into the message, and according to the bitstring, forwarding the message. By the message forwarding method and device provided by the invention, the problem of resource waste in the related art, which is caused by a case that route protection cannot be correctly and reasonably configured, is solved, thereby achieving effects of reasonably and effectively configuring route protection and avoiding resource waste.
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Description

technical field

[0001] The present invention relates to the communication field, in particular, to a message forwarding method and device. Background technique

[0002] With the rapid development of Software Defined Network (SDN) technology and Network Function Virtualization (NFV) in recent years, the controllability of network deployment is becoming stronger and more complicated. It also became higher and higher. Especially for intermediate networks such as core networks and aggregation networks, in order to adapt to different services and meet different deployment requirements, the control methods are becoming more and more complicated. Especially for multicast applications such as Multicast Virtual Private Network (MVPN for short) and Internet Protocol Television (IPTV for short), etc., the number of intermediate network node states required increases exponentially.

[0003] For this reason, the industry proposes a new technology for constructing a multicast forwarding...

Examples

specific Embodiment 1

[0091] Figure 4 It is the forwarding diagram of the BIER FRR message proposed according to Embodiment 1 of the present invention, Figure 5 It is the FRR forwarding table proposed according to Embodiment 1 of the present invention, such as Figure 4 As shown, Pxx represents the bits assigned to the link by the controller, for example, Figure 4 P1 in the table indicates that the controller allocates P1 for the link from BFIR to BFR2, P2 indicates that the controller allocates P2 for the link from BFIR to BFR1, and P12 indicates that the controller allocates FRR from BFIR to BFR2 (the primary path is BFIR-BFR2, and the backup path Assign P12 to BFIR-BFR1-BFR2). Combine below Figure 4 and Figure 5 The process in this embodiment is described, including the following steps:

[0092] Step S401, when the multicast packet arrives at the BFIR node, generate the original BitString as P2, P4, P9, P12, P5, P6, P7, P8, such as Figure 4 shown.

[0093] In step S402, the BFIR for...

specific Embodiment 2

[0096] Figure 6 According to the forwarding diagram of the BIER FRR message proposed in the second embodiment of the present invention, as Figure 6 As shown, Pxx represents the bits allocated by the controller to the link, such as Figure 6P1 in the table indicates that the controller allocates P1 for the link from BFIR to BFR2, P2 indicates that the controller allocates P2 for the link from BFIR to BFR1, and P12 indicates that the controller allocates FRR from BFIR to BFR2 (the primary path is BFIR-BFR2, and the backup path Assign P12 to BFIR-BFR1-BFR2). When the path to BFR2 through BFIR fails, the multicast data packet can reach BFER1 and BFER2 through the backup path BFIR-BFR1. The FRR forwarding table in this embodiment can also refer to Figure 5 , combined below Figure 5 and Figure 6 The process in this embodiment is described, the process includes the following steps:

[0097] Step S501, when the multicast data packet arrives at the BFIR node, generate the or...

specific Embodiment 3

[0108] Figure 9 According to the forwarding diagram of the BIER FRR message proposed in Embodiment 3 of the present invention, Figure 10 It is the FRR forwarding table proposed according to the third embodiment of the present invention, such as Figure 9 As shown, P xx Represents the bits assigned to the link by the controller, such as Figure 9 P1 in the table indicates that the controller allocates P1 for the link from BFIR to BFR1, P4 indicates that the controller allocates P4 for the link from BFR1 to BFR3, and P12 indicates that the controller allocates FRR from BFIR to BFR3 (the primary path is BFIR-BFR3, and the backup path P12 is allocated for BFIR-BFR2-BFR3), and P13 means that the controller allocates P13 for another FRR from BFIR to BFR3 (the primary path is BFIR-BFR3, and the backup path is BFIR-BFR1-BFR3). The process in this embodiment is described below, including the following steps:

[0109] Step S601, when the multicast packet arrives at the BFIR node, ...