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Data message forwarding method and device in position and identity separation protocol network

A technology for separating data packets and protocols, which is applied in the field of network communication and can solve the problems of high ITR work pressure and reduced forwarding performance

Active Publication Date: 2014-08-06
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] This application provides a data message forwarding method and device in a location and identity separation protocol network, aiming to solve the problem of high working pressure of ITR and reduced forwarding performance existing in the prior art

Method used

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  • Data message forwarding method and device in position and identity separation protocol network
  • Data message forwarding method and device in position and identity separation protocol network
  • Data message forwarding method and device in position and identity separation protocol network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The data packet forwarding method in the LISP network of the embodiment of the present application includes the following aspects:

[0051] (1) Control plane

[0052] The front-end router enables the mapping acquisition function (LISP Map-pull function), and then sends a LISP Map-pull (mapping acquisition) message to the ITR according to a preset period, wherein the LISP Map-pull message is used to indicate the sending of the LISP The front-end router of the Map-pull message has enabled the mapping acquisition function, and the LISP Map-pull message carries the IP address of the interface connected to the ITR on the front-end router with the mapping acquisition function enabled. For example, the preset period is 30 seconds.

[0053] For the convenience of description, the front-end router mentioned below refers to the front-end router with the LISP Map-pull function enabled.

[0054] Among them, the format of the LISP Map-pull message can be found in Figure 4 , the ...

Embodiment 2

[0113] In the embodiment of this application, as image 3 The actual networking shown is taken as an example, and the method in the first embodiment above is described in detail. Such as image 3 As shown, terminal 1 is connected to ITR through a front-end router, and terminal 2 is connected to ETR1. The IP address of terminal 1 is 100.1.1.2, the IP address of the interface P1 connected to ITR on the front router is 10.1.1.1, the IP address of ITR is 1.1.1.1, the IP address of ETR1 is 2.1.1.1, and the IP address of terminal 2 It is 200.1.1.2.

[0114] After the front-end router enables the LISP Map-pull function, it sends a LISP Map-pull message to the ITR, where the destination IP address in the IPv4 header of the LISP Map-pull message is 1.1.1.1, and the source IP address is 10.1. 1.1, the Source Port is automatically assigned by the front-end router, and the value of the prefix routing locator is set to the IP address 10.1.1.1 of the P1 interface on the device.

[0115]...

Embodiment 3

[0124] Regarding the method in the first embodiment above, the embodiment of the present application provides a device for forwarding data packets in a LISP network to which the method can be applied.

[0125] In one embodiment, software implementation is taken as an example, such as Figure 9 As shown, the data message forwarding device applied in the ITR includes the following modules: receiving module 301, obtaining module 302, LISP encapsulating module 303 and sending module 304, wherein:

[0126] A receiving module 301, configured to receive LISP data packets and user data packets without LISP encapsulation;

[0127] The obtaining module 302 is used to obtain the destination RLOC corresponding to the destination EID of the user data packet when the receiving module 301 receives the user data packet sent by the front-end router without LISP encapsulation;

[0128] The LISP encapsulation module 303 is configured to encapsulate the user data message received by the receivin...

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Abstract

The invention discloses a data message forwarding method and device in a position and identity separation protocol network. The data message forwarding method comprises the steps that when an ITR receives an LISP data message sent by a front router, forwarding is carried out according to a purpose RLOC of the LISP data message; when the ITR receives a user data message, without LISP packaging, sent by the front router, a purpose RLOC corresponding to a purpose EID of the user data message is obtained, the user data message is packaged into an LISP data message according to the obtained purpose RLOC and then is forwarded, and the purpose EID and the purpose RLOC are sent to the front router. According to the data message forwarding method and device in the position and identity separation protocol network, the ITR shares part of list look-up and forwarding work with the front router, the work pressure of the ITR is relieved, and when multiple front routers exist, the ITR will share the work pressure of list look-up g and forwarding with the multiple front routers, and the performance pressure of the ITR is largely relieved.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a data message forwarding method and device in a Location and Identity Separation Protocol (Locator / ID Separation Protocol, LISP) network. Background technique [0002] LISP (Location / ID Separation Protocol, Location and Identity Separation Protocol) provides a data packet routing method, which can realize the seamless migration of mobile devices between different wireless networks without changing the terminal software. LISP divides the original IP (Internet Protocol, Internet Protocol) address into EID (End Point Identifier, terminal identification) and RLOC (Routing Locator, routing location identification), where EID is the IP address of the terminal (mobile device or VM), It does not have the global routing function, and RLOC is used for network-wide routing. The main terms in LISP are introduced below. [0003] EID: It is the IP address assigned wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/741H04L12/721H04L45/74
Inventor 孙策顾雷雷
Owner NEW H3C TECH CO LTD
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