CN100579033C

CN100579033C - Remote command line management method of passive optical network terminal

Info

Publication number: CN100579033C
Application number: CN200710176192A
Authority: CN
Inventors: 于金辉; 唐美玲
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-10-22
Filing date: 2007-10-22
Publication date: 2010-01-06
Anticipated expiration: 2027-10-22
Also published as: CN101141309A

Abstract

The utility model relates to an Ethernet passive optical network technique, more particularly, a remote command line administration port implementation method used for the Ethernet passive optical network terminal equipment. The utility model solves the complexity and occupation of large volume of IP addresses in the existing management method. The extendable OAM channel is established between OLT and ONU and such channel can be used to conduct the remote command line management. The utility model introduces the straightforward procedures to realize the remote management for ONU, so as to facilitate the management and maintenance of EPON network.

Description

A kind of remote command line management method of passive light network terminal

Technical field

The present invention relates to EPON (Passive Optical Network, PON) technology, relate in particular to a kind of Ethernet passive optical network (Ethernet Passive Optical Network, EPON) implementation method of the remote command line management interface of terminal equipment of being used for.

Background technology

Passive optical network technique based on Ethernet is the emerging broadband passive optical network technology based on Ethernet.Its essence is the amplification of Ethernet in the Access Network field.Local side apparatus optical line terminal (the OpticalLine Terminal of EPON, OLT) as a kind of access network equipment, generally be placed in the machine room, and optical network unit (Optical Network Unit, ONU) then be placed on position as terminal equipment, as in the user family away from machine room according to different application scenarios.Long distance that distributes in view of ONU and the characteristics that disperse are carried out unified telemanagement at local side to ONU and are just seemed and be even more important.Telemanagement to ONU at present has following several mode:

OAM (Operation, Administration, Maintenance) mode: the manner belongs to the outband management mode, and ONU supports the OAM of standard OAM and user's expansion.The weak point of this mode is to increase if desired new management object, must revise the software of ONU side and OLT side simultaneously, and extensibility is not strong.

The WEB mode: the manner belongs to the in-band management mode, requires ONU that the IP address is arranged, supports the WEB agreement and the network management interface of WEB mode is provided.On this basis, utilize the Web webmaster website of Telnet ONU to come ONU is managed in the OLT side.The weak point of this mode is to realize Web webmaster more complicated, and needs ONU to support part three layer functions, and also meaning need be for each ONU distributes an IP address, and when the ONU number was big, the IP address resource that it consumed was also bigger.

The SNMP mode: the manner belongs to the in-band management mode, requires ONU that IP address and support SNMP agency are arranged, and links to each other with ONU by in-band channel in the OLT side, by the standard snmp protocol ONU is managed.This mode and WEB mode are similar, realize more complicated and need take a large amount of IP address resources.

The TR069 mode: the manner belongs to the in-band management mode, require ONU to support DSL (DigitalSubscriber Line, Digital Subscriber Line) the TR069 standard of forum is managed ONU by proprietary ACS (AutoConfiguration Servers, Automatic Configuration Server).The weak point WEB of this mode and SNMP mode are similar.

The management for the data communication network element device at present also has a kind of fairly simple mode, promptly order line management interface mode (Command Line Interface, CLI).When present ONU equipment all is to provide CLI management interface in ONU this locality basically,, also sign in on the ONU and manage by the Telnet mode even telemanagement is provided.As seen this way to manage also belongs to in-band method, also needs therefore can face complexity and IP address problem in short supply really now equally for each ONU distributes an IP address.

Summary of the invention

In view of this, one of purpose of the present invention provides a kind of remote command line management method of passive light network terminal, uses this method can solve in the existing way to manage and realizes complicated, the big technical problem of IP address occupancy.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of method of remote command line management of passive light network terminal comprises the steps,

A, on optical network unit ONU, provide command line interface CLI to be used for telemanagement;

B, ONU is managed by the extended operation management maintenance OAM passage between optical line terminal OLT and the ONU; Step B specifically comprises:

B1, definition OLT side and the shared expansion OAM frame format of ONU side; Enter into the CLI remote interface management mode of certain ONU in the OLT side; OLT sends the expansion OAM frame that starts CLI remote interface management mode to ONU; ONU enter CLI remote interface management mode, and echo message is given OLT after receiving the expansion OAM frame of described startup CLI remote interface management mode;

B2, ONU is managed by the expansion OAM passage of setting up among the step B1.

Further, among the step B2, described expansion OAM passage uses described expansion OAM frame format to realize.

Further, among the step B, as follows described ONU is managed:

Step 41: send CLI by expansion OAM passage and order to ONU;

Step 42:ONU receives the CLI order back that sends it is resolved, carries out and return execution result to OLT.

Further, among the step B, after finishing described bookkeeping, also comprise the step of closing described expansion OAM passage:

Step 51: withdraw from the order of CLI remote interface management mode to ONU by the transmission of expansion OAM passage;

After step 52:ONU receives described exiting command, carry out and withdraw from operation, and give OLT by described expansion OAM passage return results.

Adopt the method for the invention, compared with prior art,, realized, make that EPON Network Management and maintenance are convenient with the telemanagement of straightforward procedure to ONU owing to taked expansion OAM to add the way to manage of CLI.This method control realizes simply having strengthened the function of EPON equipment, and having improved the efficient and the flexibility of EPON network operation flexibly.

Description of drawings

Fig. 1 is an EPON system topo graph;

Fig. 2 is the technical solution of the present invention overview flow chart;

Fig. 3 is the example of expansion OAM frame format in the technical solution of the present invention;

Fig. 4 starts the flow chart that remote management mode is set up expansion OAM passage in the technical solution of the present invention;

Fig. 5 manages operational flowchart by long-range CLI to ONU in the technical solution of the present invention;

Fig. 6 withdraws from CLI remote interface management mode in the technical solution of the present invention, close expansion OAM channel flow figure.

Embodiment

With embodiment the present invention is described in further detail with reference to the accompanying drawings below:

Fig. 1 has introduced the EPON network topology relevant with the inventive method.As can be seen from the figure, an OLT can join a plurality of ONU by optical splitter.Downlink data load mode from OLT to ONU is time division multiplexing and physical layer broadcast mode, and promptly each downlink frame can send to the PON port of all ONU.Upstream data load mode from ONU to OLT is TDMA (Time Division MultipleAccess, a time division multiple access) mode.

Fig. 2 is the flow chart of steps of realization the inventive method, as shown in the figure,

Step 1, provide CLI management interface in ONU this locality.

Need provide the CLI management interface in ONU this locality, can manage ONU by the CLI management interface, this management interface makes this ONU terminal can receive the remote control command of OLT end.

Step 2, definition OLT side and the shared expansion OAM frame format of ONU side.

Existing OAM agreement is expanded, be defined in expansion OAM frame format and relevant parameter that OLT side and shared being used for of ONU side transmit command string and response message.

Step 3, enter into the CLI remote management mode of certain ONU, set up expansion OAM passage by the local cli interface of OLT.

Fig. 4 is the refinement flow chart of this step, and this step can further be refined as following steps:

Step 31: the CLI remote interface management mode that enters into certain ONU by the cli interface of OLT side;

Step 32:OLT sends an expansion OAM frame that has " starting long-range CLI " order to ONU, and notice ONU starts CLI;

Step 33:ONU finishes the initialization of self after receiving and starting the CLI notice, enter the cli interface management mode, and the echo command prompt is given OLT;

Step 34:OLT display reminding symbol, indication has entered into long-range CLI management mode;

OLT displays it after receiving the CMD that ONU returns, and expression has entered under the long-range CLI management mode, i.e. the expansion OAM passage between OLT and the ONU has been set up in expression, can begin the telemanagement of ONU.

Step 4, ONU is managed operation by long-range CLI.

Fig. 5 is the refinement flow chart of this step, and this step can further be decomposed into following steps:

Step 41:OLT side input CLI order sends corresponding command string to ONU by expansion OAM passage;

The handling process that step 42:ONU receives behind the CLI command string that sends is routinely resolved and is carried out it, returns execution result then and gives OLT;

Step 43:OLT shows execution result;

In fact the ONU side has been redirected to expansion OAM passage with the input and output of CLI management interface, i.e. order line order in the input of OLT side sends to the execution of ONU end by expansion OAM passage, after ONU is finished the result is fed back to the OLT end by expansion OAM passage and shows.

Step 5, withdraw from CLI remote interface management mode after having operated, close expansion OAM passage

Fig. 6 is the refinement flow chart of this step, and this step can further be decomposed into following steps:

Step 51: input " withdrawing from " order under the CLI of OLT side remote interface management mode sends corresponding command string to ONU by expansion OAM passage;

Step 52:ONU receives " withdrawing from " order that sends, and withdraws from the cli interface management mode, gives OLT by expansion OAM passage return results then;

Long-range cli interface management mode is withdrawed from step 53:OLT demonstration.

This is the format sample of the expansion OAM frame that foundation expansion OAM passage is adopted in the invention technical scheme for Fig. 3.In this example, Fig. 3 A is the claim frame form, and Fig. 3 B is the response frame form.The publicly-owned field of claim frame form and response frame form has: the source address (Source Address) of the destination address of 6 bytes (Destination Add), 2 bytes, the frame length (Length/Type) of 2 bytes, the frame subtype (Subtype) of 1 byte, the mark of 2 bytes, the Frame Check Sequence (FCS) of filling field (Pad) and 4 bytes.

Other field of claim frame is as follows: (Code, 1 byte are worth and are 0xFE extended code; ), the extended code that adopts IEEE802.3-section 5 to define; Organization identification (OUI, 3 bytes, be worth be 0xD0D09D), the extended operation sign indicating number (Ext.Opcode, 1 byte, be worth be 0x1), branch fields (Brach, 1 byte, be worth be 0x0F), the leaf field (Leaf, 2 bytes, be worth be 0x0104).

Other field of response frame is as follows: and extended code (Code, 1 byte, 0xFE), organization identification (OUI, 3 bytes, 0xD0D09D), extended operation sign indicating number (Ext.Opcode, 1 byte, 0x2), branch fields (Branch, 1 byte, 0x1), leaf (Leaf, 2 bytes, 0x0104), variable width (VariableWidth, 1 byte, 0x20), command string (Command String, 32 bytes).Wherein, the command character string field is filled different values according to different orders.

The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1, a kind of remote command line management method of passive light network terminal is characterized in that, comprises the steps:

2, method according to claim 1 is characterized in that, among the described step B2, as follows described ONU is managed:

Step 41: send CLI by expansion OAM passage and order to ONU;

3, method according to claim 1 is characterized in that, among the step B, also comprises the step of closing described expansion OAM passage after finishing described bookkeeping: