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Method for implementing message forwarding along RPR ring and RPR network

A message forwarding and message technology, which is applied in the network field, can solve problems affecting communication speed and degree of freedom, and achieve the effects of mature MPLS technology, saving equipment room space, and easy expansion

Inactive Publication Date: 2005-09-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This method must determine a special tree structure for the RPR ring, and the communication path between RPR rings can only be carried out along the tree structure, which affects the communication rate and degree of freedom

Method used

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  • Method for implementing message forwarding along RPR ring and RPR network
  • Method for implementing message forwarding along RPR ring and RPR network
  • Method for implementing message forwarding along RPR ring and RPR network

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with drawings and embodiments.

[0038] exist image 3 In , three RPR rings are interconnected through two RPR gateways. There are many edge nodes on each ring. The edge nodes collect messages from users and send them to the RPR ring. At the same time, the messages received from the users of the node on the ring are sent to the users. Messages from other nodes need to continue Forward forward. The gateway connects multiple RPR rings to complete the forwarding function between multiple rings.

[0039] Such as Figure 4 As shown, it is an encapsulation format of an RPR packet containing an MPLS label. Among them, da is the MAC address of the destination station, sa is the MAC address of the source station, tunnelLabel is a newly added MPLS label, indicating the tunnel label, using the standard MPLS label format, including a 20bit Label, 3bit exp and other information, The gateway uses Label informat...

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PUM

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Abstract

A message transmission method in plurality of RPR loop and network thereof, which contains each RPR directly connected with at least one gateway, each gateway directly connected with two or more than two RPR loop, each RPR containing one gateway and several edge nodes or only containing gateway, each edge node and gateway containing respectively MAC address, establishing whole network label exchange route through control plane, each gateway only storing local information, each cross-loop transmitted message containing one MAC address information field of destination station, one source station address information field and one MPLS label information field of said loop gateway to carry route information, defining the package format for realizing right RPR grouping route selection using tunnel label and cross-loop function, insuring whole end-to-end QoS, said gateway having MPLS label exchange router function, capable of interconnected with MPLS network, can be widely used data transmission network communication field.

Description

Technical field: [0001] The invention belongs to the field of data transmission network communication, and in particular relates to a method for realizing message forwarding between multiple RPR rings and the network. Background technique: [0002] RPR (Resilient Packet Ring) is a Layer 2 Media Access Control (MAC) technology formulated by the IEEE 802.17 working group, which can be used in LANs, MANs and WANs. RPR has nothing to do with the medium, and can use Ethernet physical layer and SDH, SONET physical layer. [0003] RPR is a double-ring structure composed of a pair of reciprocal small rings, such as figure 1 As shown, the two ringlets are respectively called ringlet 0 (ringlet0) and ringlet 1 (ringlet1), and they transmit control signals for each other when transmitting data signals. Each node on the ring is identified by a 48-bit MAC address. [0004] RPR has the characteristics of bandwidth statistical multiplexing, automatic topology discovery, fast ring protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/42H04L45/50
CPCH04L12/4637H04L12/42H04L2212/0025H04L2212/00
Inventor 徐松余方晓姣
Owner HUAWEI TECH CO LTD
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