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Irregular medium protecting method for passive optical network

A passive optical network and heterogeneous technology, which is applied in the direction of data exchange network, multiplexing system selection device, digital transmission system, etc., can solve the problems of complex implementation, and achieve the effect of simple implementation and mature technology

Active Publication Date: 2007-10-10
ZTE CORP
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Problems solved by technology

[0015] Aiming at the defects and deficiencies existing in the prior art, the purpose of the present invention is to propose a heterogeneous media protection method for passive optical networks, to overcome the complex implementation and the need to define additional standard protocols in the existing heterogeneous media protection methods. Problems and defects, providing a simple and efficient method to realize PON network service protection

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  • Irregular medium protecting method for passive optical network
  • Irregular medium protecting method for passive optical network
  • Irregular medium protecting method for passive optical network

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] In the preferred embodiment of the present invention, a DSL line is used as a backup line, and the specific steps are as shown in Figure 6, including:

[0050] (1) Service configuration of OLT and ONU: first configure PON link and DSL link respectively, PON link is the main line, and DSL link is the backup line.

[0051] (2) divide the protected port of each ONU into a VLAN, promptly VLAN-ONU1 to VLAN-ONUnn as shown in Figure 3; Simultaneously divide the unprotected port of each ONU into another VLAN, promptly as Figure 3 shows VLAN1 to VLANn. In order to ensure the SLA (service-level agreement, quality of service agreement) of switching from the active service channel to the standby service channel, the services that need to be protected here can occupy equal bandwidth on the PON and DSL links.

[0052] (3) Divide each port of the OLT and the port connected t...

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Abstract

The protection method includes steps (1) partitioning main line and spare line for a protected device at user end into same VLAN; (2) partitioning each protected port of device at office end into VLAN, where port of device at user end connected to the port at office end is located; (3) starting up MSTP protocol at device at office end and device at user end, and setting up number of port of main line smaller than number of port of spare line; (4) when fault occurs in main line, multiple spanning tree protocol removes shield for VLAN corresponding to ports on main line, rearranges operation to spare line from main line, and shields VLAN corresponding to ports on main line. Comparing with prior art, the invention does not need to define protocol in addition, and provides simple realizing method.

Description

technical field [0001] The present invention relates to a protection method for a passive optical network (PON for short), in particular to a protection method for heterogeneous media of a passive optical network. Background technique [0002] PON is a single-fiber bidirectional optical access network adopting a point-to-multipoint (Point To Multi Point, referred to as P2MP) structure. (Optical Network Unit, hereinafter referred to as ONU) or optical network terminal (Optical Network Terminal, hereinafter referred to as ONT) and optical distribution network (Optical Distribution Network, hereinafter referred to as ODN). The typical topology of PON is a tree type, and ODN provides an optical transmission channel between the OLT at the central office and the ONU at the user side. ONU and ONT are collectively referred to as ONU in this document. [0003] The protection reversal of PON means that in order to improve the security of the network, usually the PON network will set...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/74H04B10/20H04B10/08H04L29/06
CPCH04Q11/0067H04L12/2861H04L12/2885H04L12/4641H04L45/22H04L45/28H04Q2011/0081
Inventor 李明生张宏熙
Owner ZTE CORP
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