L3VPN routing iteration outlet method

A routing and iterative technology, applied in the direction of digital transmission systems, electrical components, transmission systems, etc., can solve the problem that the business convergence time cannot be controlled at the millisecond level, and achieve the effect of facilitating the control of the business convergence time

Active Publication Date: 2016-06-29
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem that the service conve...

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  • L3VPN routing iteration outlet method
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  • L3VPN routing iteration outlet method

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Embodiment Construction

[0033] The present invention provides a method for L3VPN routing iterative egress, which separates the FIB (routing and forwarding table) of the forwarding plane, that is, separates the PW (pseudowire) and TUNNEL (tunnel) routing and processes them separately, so that the main control data When a change occurs, the routing data of the PW layer and the TUNNEL layer of the forwarding plane can independently update the routing data. Therefore, when updating a routing data, there is no need to update the contents of a large number of entries in the FIB table in the forwarding plane, which is convenient for network failures in the forwarding plane. Control the service convergence time. The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] In order to control the service convergence time at the millisecond level when a network failure occurs, the network usually supports some advanced fast convergence...

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Abstract

The invention discloses an L3VPN routing iteration outlet method. The method is characterized in that an FIB of a forwarding plane can be layered and separated into a VC layer and an LSP layer respectively for iteration processing, and each layer is used to determine whether a next hop IP of current unicast routing and a direct-connected routing are in a same network segment; when the answer is yes, the forwarding information package processing can be carried out directly; otherwise, the next hop IP is used to execute a PEER command for the iteration, till the next hop IP and the direct-connected routing are in the same network segment, and then the forwarding information package processing can be carried out for the later searching of the routing tables and the searching of the PW or LSP labels. According to the invention, by layering and separating the FIB table of the forwarding plane, the routing, the PW, and the TUNNEL can be separated, and then when the main control data is changed, the independent data updating of the forwarding plane can be carried out, and the updating of a plurality of table item contents of the forwarding plane is not required during the updating of one data, and then the control of the business convergence time can be facilitated, when the network faults of the forwarding plane occurs.

Description

technical field [0001] The invention relates to a route iteration algorithm, in particular to a method for L3VPN route iteration egress. Background technique [0002] A virtual private network (Virtual Private Network; hereinafter referred to as: VPN) can interconnect outlets in different places through a public network to realize a private network that is used like a dedicated line connection. MPLSL3VPN refers to the VPN technology implemented using MPLS technology and used to transmit IP packets. Since IP works on the third layer of the 7-layer network model, it is called MPLSL3VPN. [0003] Traditional 3G / B3G networks only need the basic bearer network to provide Layer 2 capabilities to meet the needs of upper-layer network mobile service backhaul; but in LTE networks, due to the introduction of S1-Flex and X2 interfaces, the basic bearer network must have Layer 3 ability to exchange. [0004] Therefore, in the LTE network, if the L3VPN carries a large number of routes,...

Claims

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Application Information

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IPC IPC(8): H04L12/723H04L12/741H04L45/50H04L45/74
CPCH04L45/50H04L45/74
Inventor 邓凯韵湘
Owner FENGHUO COMM SCI & TECH CO LTD
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