Method for realizing muti-casting in BGP/MPLS VPN

A multicast and multicast protocol technology, applied in the field of virtual private network, can solve problems such as multicast packet inheritance, multicast forwarding performance bottlenecks, increased PE equipment costs, etc., and achieve the effect of reducing requirements

Active Publication Date: 2006-10-25
HUAWEI TECH CO LTD
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Second, the GRE encapsulation and decapsulation process needs to be processed by a network processor (NP), which not only increases the cost of PE equipment but also causes a bottleneck in the multicast forwarding performance within the MVPN
[0007] Third, although Multi-Protocol Label Switching (MPLS) is deployed in the P network, when the multicast packets in the MVPN traverse the P network, they cannot be forwarded on the MPLS Label Switching Path (LSP), ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for realizing muti-casting in BGP/MPLS VPN
  • Method for realizing muti-casting in BGP/MPLS VPN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] A typical MVPN networking structure is as follows: figure 1 shown. For simplicity, the following only describes one MVPN. Among them: PE-1, PE-2, and PE-3 are respectively connected to CE-1, CE-2, and CE-3 through interfaces bound to VRF Red, and the above three CEs belong to VPN Red. CE-1 is connected to the multicast source, the source IP address of the multicast data packet sent by the multicast source is S, and the destination IP address (that is, the multicast group address) is G. CE-3 connects the receivers of the multicast group.

[0026] The process of realizing multicast in BGP / MPLS VPN of the present invention is as follows: figure 2 Said:

[0027] Step 201, discover all PEs belonging to the same MVPN.

[0028] Normally, a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses method for implementing multicast in virtual private network of boundary gateway protocol/multiple label switch BGP/MPLS VPN. The method includes steps: (1) finding out periphery routers PE supplied by all service providers in same multicast virtual private network MVPN; (2) building full interlinked virtual circuit PW among found PE, the PW connects to multicast virtual route forwarding table MVRF one-to-one correspondence to MVPN on two ends PE; (3) when multicast packet inside MVPN passes through network of multiple label switch/internet protocol MPLS/IP of service providers, entry PE forwards PW bound to MVRF to exit PE; based on PW of receiving the multicast packet, the exit PE of having received multicast packet determines MVRF the multicast packet belongs to; then the exit PE forwards the multicast packet through MVRF.

Description

technical field [0001] The invention relates to the field of border gateway protocol / multi-protocol label switching virtual private network (BGP / MPLSVPN), in particular to a method for realizing multicast in BGP / MPLS VPN. Background technique [0002] RFC2547 defines the method of establishing a virtual private network (VPN) in a multi-protocol label switching / Internet Protocol (MPLS / IP) network, that is, BGP / MPLS VPN, but RFC2547 only defines the implementation method of unicast IP VPN, and does not define How to implement multicast in BGP / MPLS VPN, that is, MVPN (Multicast VPN). Hereinafter, the VPN supporting multicast is referred to as MVPN for short. [0003] In order to realize multicast in BGP / MPLS VPN, a multicast domain (MD) method has appeared. The basic realization principle of this method is: deploy protocol independent multicast (PIM ) protocol, and assign a unique multicast IP address within the P network range to each multicast virtual private network (MVPN)...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L12/18H04L12/66H04L45/50
Inventor 李贺军
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap