Unlock instant, AI-driven research and patent intelligence for your innovation.

Exit port route filtering method and device

A filtering method and export path technology, applied in the field of communication, can solve problems such as the inability to implement on-demand release routes

Active Publication Date: 2012-06-06
HUAWEI TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the router advertises the IRT, it does not identify which type of VPN route filtering the IRT is used for. Therefore, in the prior art, when the peer performs egress route filtering, the route cannot be released on demand.

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
  • Exit port route filtering method and device
  • Exit port route filtering method and device
  • Exit port route filtering method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to figure 1 , figure 1 The flow chart of Embodiment 1 of the egress route filtering method provided by the embodiment of the present invention, the egress route filtering method includes:

[0029] S101: Receive a network layer reachability information packet, where the network layer reachability information packet carries an input routing target IRT.

[0030] In practical applications, the router at the sending end uses RT as a route, and sends it to the peer (receiving router) in the form of an MP-BGP network layer reachability information NLRI message; the peer receives the NLRI message to implement The ORF of the RT; wherein, the RT includes the IRT, that is, the NLRI message carries the IRT. For the format of the NLRI message, refer to the relevant regulations in RFC4684.

[0031] S102: Obtain the IRT and the virtual private network to which the IRT belongs according to the network layer reachability information message.

[0032] In this embodiment, the ro...

Embodiment 2

[0047] refer to figure 2 , figure 2 The flow chart of Embodiment 2 of the egress route filtering method provided by the embodiment of the present invention, the egress route filtering method includes:

[0048] S201: Receive a network layer reachability information packet, where the network layer reachability information packet carries an input routing target IRT.

[0049] In practical applications, the router at the sending end and the router at the receiving end are two adjacent routers, and the two adjacent routers have respectively established different types of VPN neighbors. The sending router uses RT as a route, and sends it to the peer (receiving router) in the form of MP-BGP network layer reachability information NLRI message; the peer receives the NLRI message to implement RT-based ORF; , the RT includes the IRT, that is, the NLRI message carries the IRT. For the format of the NLRI message, refer to the relevant regulations in RFC4684.

[0050] S202: Obtain send...

Embodiment 3

[0072] refer to image 3 , image 3 The flow chart of Embodiment 3 of the egress route filtering method provided by the embodiment of the present invention, the egress route filtering method includes:

[0073] S301: Receive a network layer reachability information packet, where the network layer reachability information packet carries an input routing target IRT.

[0074] In practical applications, the router at the sending end and the router at the receiving end are adjacent routers. After the two adjacent routers successfully negotiate the VPN ORF address family capability, the router at the sending end uses RT as a route and uses the address family (1, 132 ) is sent to the peer (receiving router) in the form of the network layer reachability information NLRI message of MP-BGP; the peer receives the NLRI message to realize ORF based on RT; wherein, the RT includes the IRT , that is, the NLRI message carries the IRT. For the format of the NLRI message, refer to the relevan...

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 embodiment of the invention provides an exit port route filtering method and a device. The exit port route filtering method comprises the following steps: receiving a network-layer accessibility information message carrying an input route target (IRT); acquiring the IRT and a virtual private network to which the IRT belongs according to the network-layer accessibility information message; andcarrying out the exit port route filtering according to the IRT and the virtual private network to which the IRT belongs. The embodiment can distribute the route according to needs when carrying out the exit port route filtering.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an egress route filtering method and device. Background technique [0002] The existing outbound route filtering (ORF, Outbound Route Filtering) technology of a virtual private network (VPN, Virtual Private Network) supports all VPNs that use a route target (RT, Route Target) for route filtering. Wherein, the VPN using RT for route filtering is divided into the following four types: Internet Protocol Version 4 Layer 3 Virtual Private Network (IPv4 L3VPN, Internet Protocol version 4 Layer 3 VPN), Internet Protocol Version 6 Layer 3 Virtual Private Network (IPv6 L3VPN, Internet Protocolversion 6 Layer 3 VPN), Layer 2 virtual private network (L2VPN, Layer2 VPN) and virtual private local area network (VPLS, Virtual Private LAN service). [0003] The RT is an extended community attribute of the border routing protocol (BGP, Border Gateway Protocol), and is used for routing fil...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L12/701
Inventor 刘桂艳倪辉赵伟
Owner HUAWEI TECH CO LTD