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Multi-domain multicast integration data distributing structure and method based on IP/MPLS/BGP

A data distribution and multicast data technology, applied in the field of computer networks, can solve problems such as limited development, limited multicast function support, insufficient address space, etc., and achieve the effect of promoting use

Inactive Publication Date: 2006-07-12
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Multicast technology in the next-generation network; the current Internet was developed in the early 1990s, and the protocol based on IPv4. With the continuous increase of Internet users and applications, IPv4 has gradually exposed a serious shortage of address space and data Lack of quality assurance in transmission, difficulty in guaranteeing data security, and limited support for multicast functions
This limits the further development of streaming media applications such as IPTV to a certain extent

Method used

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  • Multi-domain multicast integration data distributing structure and method based on IP/MPLS/BGP
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  • Multi-domain multicast integration data distributing structure and method based on IP/MPLS/BGP

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Embodiment 1

[0067] Embodiment 1: a multi-domain multicast integrated data distribution structure based on IP / MPLS / BGP,

[0068] figure 1 It is a schematic diagram of the network topology. The network includes an MPLS core multicast domain and three different IP-based PIM multicast domains.

[0069] exist figure 1 In , all IP-based PIM multicast domains are connected to the MPLS core multicast domain by using a PIM Multicast Border Router (PMBR, PIM Multicast Border Router). At the same time, the PMBR is also an edge router of the MPLS core multicast domain. From the perspective of the MPLS core multicast domain, the PMBR can be called an MPLS Multicast Border Router (MMBR, MPLS Multicast Border Router).

[0070] In the scheme, the PMBR of each PIM multicast domain also serves as the RP of the multicast domain. If the user wants to configure an additional RP in the PIM multicast domain, the anycast-RP and MSDP mechanisms must be used in the PIM multicast domain to ensure that the PMBR a...

Embodiment 2

[0078] A multi-domain multicast integrated data distribution method based on IP / MPLS / BGP, comprising the following steps;

[0079] Step 1: Multicast route establishment process in the network;

[0080] To transmit multicast data in the network, the correct multicast routing information must be established first. The establishment process of multicast routing information in the network is listed below:

[0081] Step 1: There are terminal multicast users in the edge IP-based PIM multicast domain using IGMP or MLD protocol to join or exit a multicast group;

[0082] Step 2: The PIM multicast routing protocol will generate a PIM multicast routing table according to the multicast user joining or leaving information; the PIM join / prune message triggered by the end user in the edge IP-based PIM multicast domain will reach the PMBR / MMBR;

[0083] Step 3: PMBR / MMBR updates the current multicast routing information in the multicast edge routing table MBRF;

[0084] Step 4: When a mult...

Embodiment 3

[0123] A multi-domain multicast architecture based on IP / MPLS / BGP such as image 3 As shown, the establishment process of network multicast routing information in this architecture is completed in the following steps:

[0124] Step 1: Multicast user 1 wants to join a multicast group, it first sends an IGMP / MLD join message to the DR (Designate Router, Designated Router) of multicast user 1.

[0125] Step 2: After the DR of multicast user 1 receives the IGMP / MLD message, it is processed by the PIM protocol, and a (*, multicast group address) routing item is established in the multicast routing table; the DR on the multicast user 1 The PIM protocol generates a PIM join message, which is sent to the PMBR / MMBR of multicast user 1 hop by hop.

[0126] Step 3: After receiving the PIM join message, the PMBR / MMBR of the multicast user 1 performs a hash operation on the address of the multicast group that the multicast user joins this time. The PMBR / MMBR of multicast user 1 creates a...

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Abstract

A IP / MPLS / BGP based multiple domain multicasting integration data distribution and method, said structure divides network to MPLS multicasting domain and multi - edge IP based PIM multicasting domain. Said invention puts forward MPLS multicasting edge router edge router concept and Hash method from IP multicasting address to MPLS label, solves multicasting user problem finding problem utilizing patulous BGP protocol. Said invention has two steps, step one, establishing multicasting route in network, step two, transmitting multicasting data in network. Said invention makes every multicasting user only managing own single IP multicasting domain, but service provider only managing own MPLS core multicasting domain. Said invention Present invention provides higher service expansion capacity and mobility.

Description

Technical field [0001] The invention relates to an IP / MPLS / BGP-based multi-domain multicast integrated data distribution structure and method, and a data distribution technology across multiple multicast domains, belonging to the technical field of computer networks. Background technique [0002] IP (Internet Protocol, Internet Protocol) multicast technology; multicast refers to a mechanism for synchronously (or nearly synchronously) sending data to a group of receivers. It is different from sending data to a single receiver (unicast) and sending data to all receivers on a given network (broadcast). The sender of multicast only needs to send each data packet once, and all receivers can All the data packets are received, and the duplication and forwarding of the data packets are completed by the routing nodes in the network. [0003] IP multicast refers to the mechanism of sending data realized on the IP level. IP multicast allows a collection of destination sites to be loc...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L12/24H04L45/16
Inventor 张宏科秦雅娟周华春董平杨冬王博杨水根郜帅刘颖张思东张冰怡
Owner BEIJING JIAOTONG UNIV
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