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Message forwarding method and system in information center network

An information center network and message forwarding technology, applied in the field of network communication

Inactive Publication Date: 2019-02-26
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the analysis, search and forwarding performance of RM for GET packets will become the bottleneck of the information center network architecture

Method used

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  • Message forwarding method and system in information center network
  • Message forwarding method and system in information center network
  • Message forwarding method and system in information center network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Embodiment 1: Organization of Inter-Domain Path Identification Notification Table (PID Table)

[0106] The inter-domain path identification notification table (PID Table) is obtained through mutual negotiation and calculation between resource managers. A design method of an inter-domain path identifier notification table (PID Table) provided by an embodiment of the present invention is as follows: Figure 4 As shown, the content of the entry includes the AS number, the number of path identifier PIDs, the path identifier PID, the protocol forwarding information of the corresponding autonomous domain (such as the source and destination IP addresses in the IPv4 domain), and the forwarding port.

Embodiment 2

[0107] Embodiment 2: Organization of the service registry (SID Table)

[0108] A design method of a service registry (SID Table) provided by an embodiment of the present invention is as follows: Figure 5 As shown in , the content of the entry includes the service identifier SID, the flag bit Flag (used to distinguish whether the service is registered for this domain or for other domains), the component identifier NID or AS number of the autonomous domain, information of the autonomous domain, forwarding port, and the corresponding autonomous domain. Domain routing address information (for example, in an IPv4 domain, source and destination IP addresses are included), and entry lifetime TTL, etc.

Embodiment 3

[0110] This embodiment describes the intra-domain service parsing and forwarding mechanism, such as Image 6 shown.

[0111] When a user (Client) needs to obtain a certain service, it will first send a service request packet (GET) to the RM in the domain for service query. In this embodiment, the GET packet sent by the user is used to request the service corresponding to the service identifier SID1.

[0112] The service request packet (GET) sent by the user first arrives at the ingress border router Switch 3 . The border router Switch 3 judges and recognizes the arriving service request packet (GET). Because it is a service request packet, according to the design of the information center network, the service request packet sent by the user does not contain any protocol headers, so the resource manager RM uses the GET packet parsing module to perform separate mapping processing of identity and location, and encapsulates the service request packet domain corresponding to the ...

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Abstract

The embodiment of the present invention provides a message forwarding method and system in an information center network. The method mainly includes: the resource manager queries the service registry it manages according to the service identifier carried in the service request packet; when it finds that the service corresponding to the service identifier is in the autonomous domain, it provides forward the service request packet to the corresponding exit; when it is determined that the service corresponding to the service identifier is not in the autonomous domain, query the inter-domain path identifier notification table to obtain the inter-domain route to the next autonomous domain of the service provider corresponding to the service identifier. The path identifier and related forwarding port information forward the service request packet to the next autonomous domain. The embodiment of the present invention realizes the parsing, searching and forwarding of the service request packet in the resource manager in the information center network, and each RM only needs to manage information such as the service identification registered on it, which reduces the registration of the service content of the RM, Update, delete and other operational burden.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a message forwarding method and system in an information center network. Background technique [0002] Resource access and service acquisition are important core functions of Internet services. The traditional Domain Name System (DNS: Domain Name System) completes the mapping between domain names and host IP addresses, rather than directly facing resources; if the host address storing a resource changes, the corresponding resource needs to be re-registered. This analysis method makes the network insufficient support for resource mobility, reduces flexibility, and lacks description of resource characteristics, which is not conducive to users' acquisition of resources. In addition, DNS also has problems such as slow response speed, poor error correction capability, and error-prone configuration. [0003] In the process of network resource access and data acquisition, users ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L12/723H04L45/74H04L45/50
CPCH04L45/50H04L45/54H04L45/74H04L45/745H04L2212/00
Inventor 罗洪斌林怡温兴泵
Owner BEIJING JIAOTONG UNIV
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