Method and device for realizing uninterrupted forwarding service when restarting

A technology of forwarding business and restarting, which is applied in the field of network communication, can solve problems such as the impact of online business packet loss, and achieve the effect of improving availability and maintaining uninterrupted traffic

Active Publication Date: 2017-07-04
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These services are very sensitive to traffic interruptions. For LISP network maintenance and upgrades, protocol resets and device restarts caused by software version upgrades will have a certain impact on online services.

Method used

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  • Method and device for realizing uninterrupted forwarding service when restarting
  • Method and device for realizing uninterrupted forwarding service when restarting
  • Method and device for realizing uninterrupted forwarding service when restarting

Examples

Experimental program
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Embodiment Construction

[0029] figure 1 Shown is an example diagram of the structure of a LISP network, including ETR (Engress Tunnel Router, egress tunnel router), ITR (Ingress Tunnel Router, ingress tunnel router), MS (Map Server, mapping server), MR (Map Resolver, mapping parser) and ALT (Alternative Topology, alternative topology). Among them, the two roles of ITR and ETR can be assumed by one device (called xTR), and the two roles of MS and MR can also be assumed by one device. There may be no ALT in the simplest network.

[0030] The EID in the LISP site (such as a terminal or server, etc.) is connected to the LISP network through ETR, ITR or xTR, and the ITR receives the message from the EID from the interface connected to the site, and the packet is sent to the remote LISP site or forwarded locally to a non-LISP site ; ETR receives the message from the interface connected to the LISP network, decapsulates it and sends it to the EID in the local site. In addition, the ETR registers with the M...

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Abstract

The invention provides a method for not interrupting forwarding service in the rebooting process. The method is applied to a device with an ITR forwarding plane function, wherein an LISP protocol is run on the device. The method includes the first step of holding a mapping relation table of EIDs and RLOCs when a control plane is rebooted and carrying out service forwarding according to the mapping relation table, the second step of sending a request for updating the mapping relation table to the control plane after the control plane is rebooted, and the third step of updating the mapping relation table according to the EID and RLOC mapping relation returned by the control panel. Through the technical scheme, the ITR device can normally forward service messages when software is rebooted, so traffic keeps uninterrupted, and the usability of the device is improved.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a method and a device for realizing uninterrupted forwarding service when restarting. Background technique [0002] In the traditional Internet, on the one hand, the IP address is used as the identity of the communication terminal to establish a communication connection. On the other hand, the IP address indicates the location of the terminal and is used for packet addressing and routing. The dual attributes of IP addresses have brought some unfavorable factors to the further development of the network. For example, for mobile IP, when the location of the terminal changes, its IP address will also change, and all existing connections will be interrupted. Based on these connections applications will also be interrupted. For another example, the excessive growth of the global routing table also makes the core network routers overwhelmed. [0003] In order to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
Inventor 林长望
Owner NEW H3C TECH CO LTD
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