CN106453086B - Label packet control plane integration method based on MPLS L2VPN business - Google Patents

Label packet control plane integration method based on MPLS L2VPN business Download PDF

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Publication number
CN106453086B
CN106453086B CN201610903811.1A CN201610903811A CN106453086B CN 106453086 B CN106453086 B CN 106453086B CN 201610903811 A CN201610903811 A CN 201610903811A CN 106453086 B CN106453086 B CN 106453086B
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control plane
label
mpls
forwarding
l2vpn business
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CN106453086A (en
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胡侃
逯利军
钱培专
李晏
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Shanghai Certusnet Information Technology Co Ltd
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Shanghai Certusnet Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention relates to a kind of label packet control plane integration method based on MPLS L2VPN business, include the following steps: that the label packet control plane of (1) MPLS L2VPN business generates the list item in public network tunnel；(2) control plane described in integrates the list item in the public network tunnel；(3) control plane described in generates label stack；(4) forwarding surface is forwarded by the message that the information of the label stack carries out MPLS L2VPN business.Using the label packet control plane integration method based on MPLS L2VPN business of this kind of structure, disposable iteration is completed by software in control plane to the MPLS label message forwarding of MPLS virtual private network in second layer network business to integrate, directly issue the label stack information that forwarding surface uses, forwarding surface is not needed in FTN, VC FTN, it is iterated in the forwarding-table items such as NHLFE, ILM and integrates logic, to significantly promote forward efficiency.

Description

Label packet control plane integration method based on MPLS L2VPN business
Technical field
The present invention relates to the MPLS L2VPN label packets of NFV network function technical field of virtualization more particularly to NFV to turn Send out technical field, in particular to a kind of label packet control plane integration method based on MPLS L2VPN business.
Background technique
In the legacy network devices of current mainstream, for example, router, interchanger, MPLS (Multi-Protocol Label Switching, multiprotocol label switching) virtual private network in second layer network business, as shown in Figure 1, i.e. MPLS L2VPN The forwarding of the MPLS label message of (Virtual Private Network, Virtual Private Network) business forwards the letter of foundation Breath is generated by control plane, then is issued to forwarding surface, to instruct forwarding surface to be forwarded use, due to turning for legacy network devices Fermentation is limited to the requirement of such as forwarding chip etc hardware, so that successive ignition is generallyd use, the mode repeatedly searched, control The forwarding information that face issues can not be done directly the integration of L2VPN label packet label stack information, but issue such as FTN (FEC to NHLFE, FEC to NHLFE), VC (Virtual Ciecuit, virtual circuit) FTN, ILM (Incoming Lable Map enters label mapping), NHLFE's (Next Hop Lable Forwarding Entry, next-hop label forwarding list item) turns Forwarding list item, as shown in Fig. 2, forwarding surface needs are iterated and integrate in these list items and complete forwarding logic.
Summary of the invention
The purpose of the present invention is overcoming the above-mentioned prior art, providing one kind, to can be realized disposable iteration whole Merge the label packet control plane integration side based on MPLS L2VPN business for directly issuing the label stack information that forwarding surface uses Method.
To achieve the goals above, of the invention that there is following constitute:
The label packet control plane integration method based on MPLS L2VPN business, includes the following steps:
(1) the label packet control plane of MPLS L2VPN business generates the list item in public network tunnel；
(2) control plane described in integrates the list item in the public network tunnel；
(3) control plane described in generates label stack；
(4) forwarding surface is forwarded by the message that the information of the label stack carries out MPLS L2VPN business.
Preferably, the list item includes FTN, VC FTN, NHLFE and ILM.
Preferably, the list item by the public network tunnel is integrated, specifically:
FEC (Forwarding Equivalence Class, forwarding equivalence class) is mapped to NHLFE by FTN, is passed through MPLS is mapped to NHLFE by ILM.
Preferably, the label stack that the generation forwarding directly uses, specifically:
NHLFE is mapped to label by opcode (Operation Code, operation code) operation code, by the label It is integrated into label stack.
Preferably, further including following steps between the step (3) and step (4):
Control plane described in (3-1) issues the label stack to forwarding surface.
Using the label packet control plane integration method based on MPLS L2VPN business in the invention, to bis- layers of MPLS The MPLS label message forwarding of virtual private networks business is completed disposable iteration by software in control plane and is integrated, and directly issues The label stack information that forwarding surface uses does not need forwarding surface and is iterated in FTN, the forwarding-table items such as VC FTN, NHLFE, ILM Logic is integrated, to significantly promote forward efficiency.
Detailed description of the invention
Fig. 1 is the flow chart of the MPLS L2VPN label packet forwarding logic of the prior art.
Fig. 2 is the logic diagram of the MPLS L2VPN label packet control plane forwarding-table item of the prior art.
Fig. 3 is the logic diagram of MPLS L2VPN label packet control plane integration process of the invention.
Specific embodiment
It is further to carry out combined with specific embodiments below in order to more clearly describe technology contents of the invention Description.
In one embodiment, it is somebody's turn to do the label packet control plane integration method based on MPLS L2VPN business, including such as Lower step:
(1) the label packet control plane of MPLS L2VPN business generates the list item in public network tunnel；
(2) control plane described in integrates the list item in the public network tunnel；
(3) control plane described in generates label stack；
(4) forwarding surface is forwarded by the message that the information of the label stack carries out MPLS L2VPN business.
In a kind of preferable embodiment, the list item includes FTN, VC FTN, NHLFE and ILM.
In a kind of preferable embodiment, the list item by the public network tunnel is integrated, specifically:
FEC is mapped to NHLFE by FTN, MPLS is mapped to by NHLFE by ILM.
In a kind of preferable embodiment, the label stack that the generation forwarding directly uses, specifically:
NHLFE is mapped to label by opcode operation code, the label is integrated into label stack.
Further include following steps between the step (3) and step (4) in a kind of preferable embodiment:
Control plane described in (3-1) issues the label stack to forwarding surface.
In a kind of specific embodiment, as shown in Figure 3, comprising the following steps:
S1: control plane generates public network tunnel FTN, VC FTN, NHLFE and ILM list item；
S2: control plane completes the integration of public network tunnel FTN, VC FTN, NHLFE and ILM list item, and generating forwarding directly makes Label stack；
S3: control plane issues the label stack of generation to forwarding surface；
S4: the message that forwarding surface directly uses label stack information to carry out MPLS L2VPN business forwards；
Using the label packet control plane integration method based on MPLS L2VPN business in the invention, to bis- layers of MPLS The MPLS label message forwarding of virtual private networks business is completed disposable iteration by software in control plane and is integrated, and directly issues The label stack information that forwarding surface uses does not need forwarding surface and is iterated in FTN, the forwarding-table items such as VC FTN, NHLFE, ILM Logic is integrated, to significantly promote forward efficiency.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that can still make Various modifications and alterations are without departing from the spirit and scope of the invention.Therefore, the description and the appended drawings should be considered as illustrative And not restrictive.

Claims (4)

1. a kind of label packet control plane integration method based on MPLS L2VPN business, which is characterized in that the method packet Include following steps:
(1) the label packet control plane of MPLS L2VPN business generates the list item in public network tunnel；
(2) control plane described in integrates the list item in the public network tunnel；
(3) control plane described in generates label stack；
(4) forwarding surface is forwarded by the message that the information of the label stack carries out MPLS L2VPN business；
The label stack that the generation forwarding directly uses, specifically:
NHLFE is mapped to label by opcode operation code, the label is integrated into label stack.
2. the label packet control plane integration method according to claim 1 based on MPLS L2VPN business, feature exist In the list item includes FTN, VC FTN, NHLFE and ILM.
3. the label packet control plane integration method according to claim 1 based on MPLS L2VPN business, feature exist In, the list item by the public network tunnel is integrated, specifically:
FEC is mapped to NHLFE by FTN, MPLS is mapped to by NHLFE by ILM.
4. the label packet control plane integration method according to claim 1 based on MPLS L2VPN business, feature exist In further including following steps between the step (3) and step (4):
Control plane described in (3-1) issues the label stack to forwarding surface.
CN201610903811.1A 2016-10-17 2016-10-17 Label packet control plane integration method based on MPLS L2VPN business Active CN106453086B (en)

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US10361949B2 (en) * 2017-03-08 2019-07-23 Juniper Networks, Inc Apparatus, system, and method for sharing labels across label-switched paths within networks

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CN101150587A (en) * 2007-10-24 2008-03-26 华为技术有限公司 A method, device and system for traffic switching of multi-protocol label switching traffic engineering
CN103124236A (en) * 2013-02-27 2013-05-29 迈普通信技术股份有限公司 Method and device for managing routes and tags

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