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Transmission method, apparatus and system of BIER control information

A technology for controlling information and transmission methods, applied in the field of network communication, to achieve the effect of saving memory occupation and processing time and mechanism, and avoiding information leakage

Inactive Publication Date: 2017-05-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The publication of the existing BIER control message is published through the extended IGP or BGP (Border Gateway Protocol, Border Gateway Protocol), such as the IGP protocol, which will flood the message to all nodes of the BFR in the entire BIER domain, and for For some control messages, such as which multicast group addresses are connected to the border, or which VPN (Virtual Private Network, virtual private network) information is added to the border, these information only need to be exchanged between border nodes. For forwarding nodes, it is not necessary to learn it, and the existing flooding mechanism cannot satisfy this point. To establish corresponding channels between border nodes, for the existing IGP protocol or BIER, corresponding expand

Method used

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  • Transmission method, apparatus and system of BIER control information
  • Transmission method, apparatus and system of BIER control information
  • Transmission method, apparatus and system of BIER control information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a method for transmitting BIER control information, such as Figure 4 shown, including the following steps:

[0038] Step 401, when BFIR constructs the BIER data message, carry the instruction information used to indicate that the BIER data message carries control information in the message header;

[0039] In step 402, when the BFIR constructs the BIER data message, the control information is carried in the message body.

[0040] In the above step 401, when the BFIR constructs the BIER data message, it also carries the bitstring of the BFER that needs to receive the BIER data message in the message header. After the above step 402, after the construction of the BIER data message is completed, all The BFIR sends the BIER data message to the lower-level node in the BIER domain. The BFER that receives the BIER data message directly decapsulates the control information in the message body and sends it to the control plane according to the indicat...

Embodiment 2

[0045] This embodiment provides a BFIR for sending BIER control information, such as Figure 5 As shown, the BFIR includes a first construction module 501 and a second construction module 502, wherein:

[0046] The first construction module 501 is configured to, when constructing a BIER data message, carry indication information in the message header for indicating that the BIER data message carries control information;

[0047] The second construction module 502 is configured to carry the control information in the message body when constructing the BIER data message.

[0048] Wherein, the first construction module 501 carries indication information for indicating that the BIER data message carries control information in the message header, including:

[0049] The first construction module 501 carries the indication information for indicating that the BIER data packet carries control information in the protocol proto field of the packet header.

[0050] This embodiment also...

application example 1

[0057] This example is an example of encapsulating and sending a message carrying control information in the BIER data message format when border nodes need to communicate with each other about the multicast group information that their nodes access.

[0058] Such as figure 1 The border node BFIR1 of BFIR1 has locally joined a multicast group, and obtains the bitstring of the border node that needs to communicate according to the user configuration, the centralized distribution of the controller, or the distributed control plane. For example, the nodes that need to receive are BFER1 and BFER2, then this The bit mapped by the two nodes will be set in the bitstring.

[0059] BFIR1 press as Figure 7 the format described, or a similar format extension, Figure 7 The type value in the format is used to indicate that this is a packet of locally joined multicast group information. image 3 shown behind the BIER header, and place the image 3 In the proto field, the value is set ...

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Abstract

The invention discloses a transmission method, apparatus and system of BIER (Bit Indexed Explicit Replication) control information, which can transmit control information in an easy and highly efficient manner and prevent control information overload. The method includes the following steps: a bit forwarding ingress router (BFIR) constructs a BIER datagram, a datagram header carries indication information used for indicating that the BIER datagram carries control information, and a datagram body carries the control information. A system comprises a bit forwarding ingress router (BFIR) and a bit forwarding egress router (BFER). The BFIR comprises a first construction module and a second construction module. The BFER comprises a receiving module and a de-packaging module. Through the scheme of the embodiment of the invention, access information related to mlticasting is only sensed at boundary nodes, the memory occupaion processing time and mechanism of intermediate forwarding nodes is saved, and information leakage at unrelated nodes is prevented.

Description

technical field [0001] The present invention relates to network communication technology, in particular to a method, device and system for transmitting control information in BIER (Bit Indexed Explicit Replication) technology in the multicast field. Background technique [0002] IP multicast technology realizes efficient data transmission from point to multipoint in IP network. It can effectively save network bandwidth and reduce network load, so it is widely used in real-time data transmission, multimedia conference, data copy, IPTV (Interactive Internet Television), games and simulation. The current multicast technology generally adopts PIM (Protocol Independent Multicast, protocol independent multicast) protocol (including protocol independent multicast-sparse mode (PIM-SM) and protocol independent multicast-dense mode (PIM-DM)), MSDP (Multicast Source Discovery Protocol, Multicast Source Discovery Protocol) and other implementations, a common feature of these multicast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18
CPCH04L12/18
Inventor 廖婷胡方伟张征
Owner ZTE CORP
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