Route filtering method for achieving LDP in IPRAN system

A filtering method and routing technology, applied in the field of communication, can solve the problems affecting the efficiency and stability of LDP, and achieve the effect of improving the efficiency and stability of LDP, ensuring normal operation, and enhancing flexibility.

Active Publication Date: 2018-10-23
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is that in the existing IPRAN sys

Method used

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  • Route filtering method for achieving LDP in IPRAN system
  • Route filtering method for achieving LDP in IPRAN system
  • Route filtering method for achieving LDP in IPRAN system

Examples

Experimental program
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specific Embodiment 1

[0058] In this embodiment, in order to reduce unnecessary consumption, improve the efficiency and stability of LDP, and ensure the normal operation of the network, the route sent to the LDP module is filtered in a way that matches the route prefix list one by one, that is, That is, when creating a routing filtering mode, different routing prefix lists will be created according to different routing filtering strategies. The filtering mode implements the configuration of the filtering strategy by binding a routing prefix list.

specific Embodiment 2

[0060] The filtering mode of this embodiment includes ALL filtering mode and PREFIX-LIST filtering mode;

[0061] When filter mode is ALL filter mode, do not bind any filter list (route prefix list), do not limit, if route management module of the present invention only sends 32 routes in the system to LDP module by default, as long as it is 32 bits route, it will be sent directly to the LDP module, and the ALL filtering method is the default filtering method;

[0062] When the filter mode is changed to PREFIX-LIST filter mode, all routes in the system will be recalculated, and the routes will be compared one by one with a route prefix list bound to the PREFIX-LIST filter mode to match the eligible routes ; Cancel the unqualified route from the LDP module, and set the flag bit of the corresponding route from the sent state (1) to the unsent state (0); set the qualified and flag bit to the unsent state (0) Send the route to the LDP module, and set the flag bit of the correspon...

specific Embodiment 3

[0064] Such as figure 2 As shown, in this embodiment, according to different routing filtering strategies, different routing prefix lists are created, and the binding of routing prefix lists and corresponding routing filtering modes includes the following steps:

[0065] Step S211 , according to different routing filtering strategies, create different routing prefix lists in the IPRAN system, and configure the range of routes through each routing prefix list, and the routing filtering strategy is realized by configuring the routing prefix list.

[0066] Step S212, enabling the filtering policy of the routing prefix list.

[0067] Step S213, determine whether the specified filtering mode is ALL filtering mode or PREFIX-LIST filtering mode; if it is ALL filtering mode, no binding operation is performed; otherwise, step S214 is executed.

[0068] Step S214, binding the PREFIX-LIST filtering mode with the corresponding routing prefix list.

[0069] If you modify the filter cond...

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Abstract

The invention discloses a route filtering method for achieving an LDP in an IPRAN system. The route filtering method comprises the following steps that route filtering modes are created, and corresponding route filtering strategies are configured; a route management module filters routes according to the route filtering mode to obtain the routes meeting the condition; and the routes which are notsent to the LDP module in the routes meeting the condition are determined by means of the states marked by newly-added route mark bits and sent to the LDP module, and the mark bits are set to be a sent state. According to the method, the route filtering strategies are configured by creating route prefix lists, the routes sent to the LDP modules are filtered according to the route prefix list, unnecessary consumption is reduced, the efficiency and the stability of the LDP are improved, and normal operation of a VPN is guaranteed.

Description

technical field [0001] The invention relates to the field of communication technologies such as data and IP transmission equipment, and in particular to a route filtering method for realizing LDP in an IPRAN system. Background technique [0002] Routing is a very important function in the IP switching system. It mainly works on the third layer of the OSI (Open System Interconnection, Open System Interconnection) reference model. It is applied to three-layer devices such as three-layer switches and routing devices to guide IP Message forwarding. Routing is divided into dynamic routing, static routing and direct routing. Static routing is a fixed route manually configured by the configuration personnel. Direct routing is generated by configuring the Layer 3 interface IP of the device. Dynamic routing is generated by OSPF (Open Shortest Path First, open shortest path first), RIP (Routing Information Protocol, routing information protocol), ISIS (Intermediate system to intermed...

Claims

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Application Information

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IPC IPC(8): H04L12/723H04L12/741H04L12/745H04L45/50H04L45/74H04L45/748
CPCH04L45/50H04L45/745H04L45/748
Inventor 童振宇刘攀徐婧
Owner FENGHUO COMM SCI & TECH CO LTD
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