Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Reverse path forwarding inspection method and device

A technology of reverse path forwarding and checking method, applied in the field of communication, can solve problems such as RPF checking failure, affecting multicast message forwarding, long synchronization time of unicast routing, etc., and achieves the effect of avoiding checking failure

Active Publication Date: 2013-02-27
XINHUASAN INFORMATION TECH CO LTD
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when a network device fails and the unicast routes need to be resynchronized, due to the large number of unicast routes in the unicast routing table, the unicast route synchronization time will be very long, resulting in the failure of unicast route synchronization, making RPF The check fails and affects the forwarding of multicast packets

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
  • Reverse path forwarding inspection method and device
  • Reverse path forwarding inspection method and device
  • Reverse path forwarding inspection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] An embodiment of the present invention provides a reverse path forwarding check method, which is applied to a network device (such as routers and switches, etc.), such as figure 2 As shown, the method includes:

[0029] In step 201, the unicast routing management module notifies the multicast routing management module of the information that the unicast routing will fail to synchronize after learning that the unicast routing synchronization time is greater than the preset time (which can be set according to the actual experience value) event. ; Wherein, the event that the synchronization time of the unicast route is greater than the preset time includes but is not limited to: a GR (Graceful Restart, smooth restart) event or an active / standby switchover event.

[0030] In the embodiment of the present invention, by analyzing the unicast routin...

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 a reverse path forwarding inspection method and a reverse path forwarding inspection device. The method comprises the following steps: a unicast routing management module informs a multicast routing management module about the information on unicast routing synchronous failure, after knowing an event that the unicast routing synchronization time is larger than the preset time; the multicast routing management module backups unicast routing corresponding to reverse path forwarding (RPF) inspection after knowing the information on unicast routing synchronous failure; and after synchronization failure of the unicast routing corresponding to the RPF inspection, the multicast routing management module performs RPF inspection by utilizing the backup unicast routing. According to the reverse path forwarding inspection method and the reverse path forwarding inspection device, the RPF inspection failure can be avoided after the event that the unicast routing synchronization time is larger than the predetermined time occurs.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a reverse path forwarding checking method and equipment. Background technique [0002] like figure 1 As shown in , it is a schematic diagram of a multicast network. In a multicast network, the destination address field of an IP packet (multicast packet) is a multicast group address, and the multicast source is directed to the address identified by this multicast group address. Groups send multicast packets; therefore, network devices on the forwarding path often need to forward multicast packets received from one incoming interface to multiple outgoing interfaces in order to send multicast packets to multiple receivers. [0003] In the prior art, in order to process the same multicast information from different peers received by the same network device on different interfaces, it is necessary to perform RPF (Reverse Path Forwarding, reverse path forwarding) check on the i...

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): H04L12/26H04L12/703H04L45/28
Inventor 王伟
Owner XINHUASAN INFORMATION TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com