CN103067073B - A kind of management method of black link optical interface and device - Google Patents
A kind of management method of black link optical interface and device Download PDFInfo
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- CN103067073B CN103067073B CN201110318042.6A CN201110318042A CN103067073B CN 103067073 B CN103067073 B CN 103067073B CN 201110318042 A CN201110318042 A CN 201110318042A CN 103067073 B CN103067073 B CN 103067073B
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Abstract
The invention provides a kind of management method of black link optical interface and device, methods described includes：When two nodes are for the relation of transmission equipment and client layer equipment, judge whether transmission equipment and client layer equipment support the parameter verification function of black link optical interface；When described two nodes support the parameter verification function of described black link optical interface, parameter verification is carried out by control passage.The present invention passes through the control channel between transmission equipment and client layer equipment, realize the parameter verification of black link optical interface, the DWDM optical interface between different vendor's equipment can be made to interconnect compatible, reduce the construction cost of carrier network, and energy loss can be reduced.
Description
Technical field
The present invention relates to optical transport network field, the manager of more particularly, to a kind of black link (Blank link) optical interface
Method and device.
Background technology
In traditional optical transport network, as shown in figure 1, a client layer equipment is set with another client layer remote
Typically by optical transmission equipment come carrying signal between standby, wherein, client layer equipment can be router, switch etc..Client
Layer equipment is typically also grey optical port by white light mouth, is connected with optical transmission equipment interface.Because the beche-de-mer without spike of each client's layer interface
Number is different, therefore in transmission equipment side, needs to change client by light electric light (Optical-Electronic-Optical, OEO)
Layer white light signal is converted into meeting intensive multiplexed optical wave (the Dense Wavelength Division of optical transmission equipment demand
Multiplexing, DWDM) wavelength signals, then just optical signal carried out being multiplexed, the management of long range propagation, signal, demultiplex
With.In receiving terminal, optical transmission equipment is converted into white light signal by OEO conversion DWDM optical signal and passes to client layer setting again
Standby.Achieve the transverse compatibility of different manufacturers client layer equipment although it is so, but the OEO transducer of transport network interface is not
The cost only making carrier network increases, and also brings along larger energy loss simultaneously.
G.698.2, International Telecommunication Union's telecommunication standardsization tissue (ITU-T) proposes a kind of standardized transmission net
Equipment black LI(link interface) method.Black LI(link interface) method is meant that from the point of view of the outside of transmission net, and it is overall to be a black
Box, the optical interface parameter of the outside single channel light tributary signal of specification box, including single channel emission port Ss, single channel
Receiving port Rs and the optical fiber link parameter to Multiple Sections specify additional informational explanation, such as maximum attenuation, chromatic dispersion
With polarization mode dispersion etc..Therefore, the client layer equipment from different manufacturers is meeting black LI(link interface) method optical interface parameter
Under conditions of, you can direct-connected and optical transmission equipment single-pass pipeline joint between to realize, form the compatible of client layer equipment.
Specifically as shown in Figure 2 a, the client layer equipment from production firm B, C, D can be connected directly to from A manufacturer by DWDM optical interface
Transmission net tables of equipment channel interface on.Situation about being docked with transmission equipment by white light mouth with respect to client layer equipment, is utilized
The glory mouth docking mode of black LI(link interface) method can save an OEO transducer on each single channel, can be effective
Cost-effective and reduce energy consumption.Here, the DWDM optical interface of client layer equipment is commonly referred to as glory mouth.
Black link optical parameter is to be drawn according to the equipment and line conditions transmitting network, only meets black link mode
Interface parameters, the optical interface between different clients layer equipment vendors can be interconnected by optical transport network.It is thus desirable to light passes
Interact between SCN Space Cable Network management system and client layer equipment, carry out the negotiation verification of optical interface parameter.Then, work as optical transport network
Management system when have direct administration authority to client layer equipment, that is, optical transport network has management passage to be directly connected to visitor
The equipment of family layer, NMS can be interacted with customer equipment by NMP, judges that corresponding client layer sets
Standby optical interface whether with transmission equipment black link single channel interface compatibility.But under many circumstances, client layer equipment does not have
Interface is directly connected to transmission NMS.
Content of the invention
In view of this, present invention is primarily targeted at providing a kind of management method of black link optical interface and device, energy
DWDM optical interface interconnection between Gou Shi different vendor equipment is compatible.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that：
A kind of management method of black link optical interface, methods described includes：
When the relation that two nodes are transmission equipment and client layer equipment, judge whether are transmission equipment and client layer equipment
Support the parameter verification function of black link optical interface；
When described two nodes support the parameter verification function of described black link optical interface, joined by control passage
Number verification.
Further, judge whether transmission equipment and client layer equipment support the parameter verification of black link optical interface described
Before function, methods described also includes：
Judge whether described two nodes support LMP_WDM；
When described two nodes all support described LMP_WDM, determine whether whether described two nodes are transmission equipment
Relation with client layer equipment.
Wherein, described judge whether transmission equipment and client layer equipment support the parameter verification function of black link optical interface
For：
According to the flag bit pre-setting, judge whether described transmission equipment and client layer equipment support black link optical interface
Parameter verification function.
Further, after carrying out parameter verification by control passage, methods described also includes：
After the completion of verification, the interface of described transmission equipment and client layer equipment is set to compatibility, and on carrying out
Report.
Wherein, described parameter verification is carried out by control passage it is：
Transmission equipment sends the link general introduction carrying black link optical interface parameter TLV by control channel
(LinkSummary) message, to client layer equipment, carries out parameter verification.
A kind of managing device of black link optical interface, described device includes：Judging unit, verification unit；Wherein,
Described judging unit, for when two nodes are for the relation of transmission equipment and client layer equipment, judging that transmission sets
Whether standby and client layer equipment supports the parameter verification function of black link optical interface；
Described verification unit, for when described two nodes support described black link optical interface parameter verification function when,
Parameter verification is carried out by control passage.
Further, described judge module, is additionally operable to judge whether described two nodes support LMP_WDM；Described two
When node all supports described LMP_WDM, determine whether whether described two nodes are transmission equipment and the pass of client layer equipment
System.
Wherein, described judge module, specifically for according to the flag bit pre-setting, judging described transmission equipment and client
Whether layer equipment supports the parameter verification function of black link optical interface.
Further, described verification unit, is additionally operable to after the completion of verification, by described transmission equipment and client layer equipment
Interface is set to compatibility, and is reported.
Wherein, described verification unit, is sent by control channel specifically for triggering transmission equipment and carries black link light
The LinkSummary message of interface parameters TLV, to client layer equipment, carries out parameter verification.
The present invention passes through the control channel between transmission equipment and client layer equipment, realizes the parameter school of black link optical interface
Test, the DWDM optical interface between different vendor's equipment can be made to interconnect compatible, reduce the construction cost of carrier network, and
Energy loss can be reduced.
Brief description
Fig. 1 is traditional multi-manufacturer DWDM schematic network structure；
Fig. 2 a is the multi-manufacturer DWDM schematic network structure using black LI(link interface) method；
Fig. 2 b is to there is control signaling passage using black LI(link interface) method and between client layer equipment and transmission equipment
Multi-manufacturer DWDM schematic network structure；
Fig. 3 is the schematic flow sheet of the management method of black link optical interface of the present invention；
Fig. 4 is the detailed process schematic diagram of the management method of black link optical interface of the present invention；
Fig. 5 is the schematic flow sheet of the embodiment one of management method of black link optical interface of the present invention；
Fig. 6 is the schematic flow sheet of the embodiment two of management method of black link optical interface of the present invention；
Fig. 7 is the structural representation of the managing device of black link optical interface of the present invention.
Specific embodiment
The basic thought of the present invention is：When two nodes are for the relation of transmission equipment and client layer equipment, judge transmission
Whether equipment and client layer equipment support the parameter verification function of black link optical interface；When described two nodes support described black chain
During the parameter verification function of road optical interface, parameter verification is carried out by control passage.
In optical transport network, but probably there is control signaling between client layer equipment and transmission net equipment and led to
Road, as shown in Figure 2 b, for convenience of description, only draws a single-pass pipeline joint in Fig. 2 b, LMP dotted line is control signaling passage.
Wherein, control plane LMP Link Manager Protocol (Link Management Protocol, LMP) is usually used to and carries out optical channel chain
The verification of road attribute.The black link of transmission net equipment and client layer device optical interface therefore can be realized from the angle of control plane
Attribute verifies.
For making the object, technical solutions and advantages of the present invention become more apparent, by the following examples and referring to the drawings, right
The present invention further describes.
Fig. 3 shows the schematic flow sheet of the management method of the black LI(link interface) of the present invention, as shown in figure 3, methods described bag
Include following step：
Step 301, when two nodes are for the relation of transmission equipment and client layer equipment, judges transmission equipment and client layer
Whether equipment supports the parameter verification function of black link optical interface；
Here, transmission equipment typically optical multiplexer, demultiplexer, light bifurcated multiplexing equipment (OpticalAdd-
Drop Multiplexer, OADM) etc.；Client layer equipment can be router, switch etc..
Specifically, have been defined for LMP_WDM_CONFIG object to assist in RFC4209 LMP_WDM LMP Link Manager Protocol
Business's whether support to LMP_WDM GL, wherein flag bit W puts 1 expression and supports LMP_WDM, sets to 0 expression and does not support LMP_
WDM.Flag bit O put 1 show to send this object for client layer equipment, set to 0 represent send this object for transmission equipment.This reality
Apply in example, also LMP_WDM_CONFIG object is extended, pre-set a flag bit B, represent transmission equipment and visitor
Between the layer equipment of family, whether interaction supports the parameter verification function of black link optical interface, by judging this flag bit pre-setting
B, judges whether described transmission equipment and client layer equipment support the parameter verification function of black link optical interface, such as flag bit B
Put 1 expression to support, set to 0 expression and do not support, wherein, the LMP_WDM_CONFIG Format Object after extension specifically may be referred to table 1.
Table 1.
Step 302, when described two nodes support the parameter verification function of described black link optical interface, logical by controlling
Road carries out parameter verification；
Specifically, the optical interface parameter of black link belongs to the association attributes of link, by RFC4204 and RFC4209
Link summarize the DATA_LINK subobject that carried of (LinkSummary) message and be extended, a kind of object type type is set
=9, consult (Black linkcompatible optical parameters) for black link compatibility optical parameter, this son is right
Specific optical parameter species is contained in the sub- TLV (Type-Length-Value) of elephant.This subobject form is specifically as table 2 institute
Show：
Type=9：black link compatible optical parameters
Table 2
Wherein, the form of this sub- TLV is specifically as shown in table 3：
Table 3
The content of the species (Type) of sub- TLV, with reference to table 4, includes the optical parameter of 1 general (General)；2 single channels are sent out
Penetrate the optical parameter of end (Ss)；The optical parameter of 3 single channel receiving terminals (Rs)；Between 4 transmitting terminals and receiving terminal, (Ss to Rs) adds
Illustrative parameter；5 application codes (Application codes).Application codes uses string number or character
To represent the combination of front four kinds of parameters, can referring particularly to ITU-T G.698.2 with regard to application code.Here, for Black
The single-pass pipeline joint of link is not limited only to a kind of application code, and that is, an interface may support different passage optical interface types.
Table 4
Here, transmission equipment passes through control channel to client layer equipment transmission LinkSummary message, described
The representative that a type is 9 black link compatibility optical parameter is carried in DATA_LINK subobject in LinkSummary message
TLV, to carry out parameter verification；After client layer equipment receives LinkSummary message, inquire about this node capacity, when client layer sets
When standby interface meets the parameter definition of black link, return LinkSummaryACK message to transmission equipment, confirm that parameter verification becomes
Work(；Transmission equipment receives LinkSummaryACK message, completes the parameter verification of black link optical interface it is possible to complain to transmission
NMS, now, the existing compatibility interconnection and transmission equipment between of glory cause for gossip of client layer equipment.
Fig. 4 shows the detailed process of the management method of black link optical interface of the present invention, as shown in figure 4, methods described bag
Include following step：
Step 401, judges whether support LMP_WDM between two nodes, if all supporting, execution step 402, otherwise terminates
Currently processed flow process；
Specifically, have been defined in LMP_WDM_CONFIG object according in RFC4209LMP_WDM LMP Link Manager Protocol
Flag bit W judge whether to support LMP_WDM, such as disappeared according to the CONFIG including LMP_WDM_CONFIG object receiving
Breath, judges whether the node sending this CONFIG message supports LMP_WDM, when flag bit W puts 1, represents and supports LMP_WDM, mark
When will position W sets to 0, represent and do not support LMP_WDM.
The node receiving described CONFIG message can judge whether to support that black link light connects by inquiring about this node capacity
The parameter verification of mouth, is judged especially by flag bit W in LMP_WDM_CONFIG object, when flag bit W puts 1, represents
Support LMP_WDM, when setting to 0, represent and do not support LMP_WDM.
Step 402, when described two nodes all support LMP_WDM, determines whether whether described two nodes are visitor
Family layer equipment and transmission equipment relation, if so, execution step 403, otherwise terminate currently processed flow process；
Specifically, can judge to send by the CONFIG message including LMP_WDM_CONFIG object receiving
The node of described CONFIG message is client layer equipment or transmission equipment, specifically can be by LMP_WDM_CONFIG object
Flag bit O is judged, when flag bit O put 1 show to send this message for client layer equipment, set to 0 expression and send this message
For transmission equipment.
The node receiving described CONFIG message can judge whether to support that black link light connects by inquiring about this node capacity
The parameter verification of mouth, is judged especially by flag bit O in LMP_WDM_CONFIG object, shows to send when flag bit O puts 1
This message for client layer equipment, set to 0 represent send this message for transmission equipment.
Step 403, judges whether two nodes support the parameter verification of black link optical interface, if so, execution step 404,
Otherwise terminate currently processed flow process；
Specifically, can judge to send according to the CONFIG message including LMP_WDM_CONFIG object receiving
Whether the node of described CONFIG message supports the parameter verification of black link optical interface, specifically can pass through LMP_WDM_CONFIG
In object, flag bit B is judged, supports when flag bit B puts 1 expression, sets to 0 expression and do not support.
The node receiving described CONFIG message can judge whether to support that black link light connects by inquiring about this node capacity
The parameter verification of mouth, is judged especially by flag bit B in LMP_WDM_CONFIG object, shows to prop up when flag bit B puts 1
Hold, set to 0 expression and do not support.
Step 404, carries out parameter verification by control channel, and judges whether parameter verification is successful, if so, execution step
405, otherwise execution step 406；
Specifically, transmission equipment passes through control channel to client layer equipment transmission LinkSummary message, described
The representative that a type is 9 black link compatibility optical parameter is carried in DATA_LINK subobject in LinkSummary message
TLV, to carry out parameter verification；After client layer equipment receives LinkSummary message, inquire about this node capacity, when client layer sets
When standby interface meets the parameter definition of black link, return LinkSummaryACK message to transmission equipment, confirm that parameter verification becomes
Work(, otherwise for unsuccessful.
Step 405, when parameter verification success, the interface of described two nodes is set to compatibility, and reports net
Pipe；
Transmission equipment receives LinkSummaryACK message, completes the parameter verification of black link optical interface it is possible to complain to
To transmission NMS, now, the existing compatibility interconnection and transmission equipment between of glory cause for gossip of client layer equipment.
Step 406, when parameter verification is unsuccessful, then the interface of described two nodes is set to not have compatibility.
Fig. 5 shows the flow process of the embodiment one of the management method of black link optical interface of the present invention, as shown in figure 5, implementing
In example one, client layer equipment is router；One router connects to transmission equipment node.Router device and transmission equipment section
Direct-connected with DWDM glory mouth between point, and the method using black link.Chain of command is had to believe between transmission equipment node and router
Make passage.Chain of command signalling path generally using band outside by the way of, here, special rule are not done to its specific physical aspect
Fixed.Described embodiment one comprises the steps：
Step 501, transmission equipment node is sent to adjacent node by control passage and comprises LMP_WDM_CONFIG object
CONFIG message.
Here, flag bit W, O, B bit in described LMP_WDM_CONFIG object all puts 1, represents this transmission net section
Point supports the LMP_WDM agreement based on RFC4209, and message sending end is transmission equipment side, and only receiving node is client layer section
Point just can carry out LMP_WDM interaction, and supports to carry out black link optical interface parameter verification.
Step 502, after adjacent router node receives LMP_WDM_CONFIG object, inquires about this node capacity, when
This node also supports the LMP_WDM agreement based on RFC4209, and belongs to client's node layer, and supports black link optical interface parameter
Execution step 503 during verification.
Step 503, router node passes through control passage and returns ConfigACK message to transmission equipment node, and showing can
To carry out black link parameter verification interaction.
Step 504, transmission equipment node passes through to inquire about webmaster acquisition or by locally stored acquisition single-pass pipeline joint
Black link optical interface parameter or type.And LinkSummary message is sent to router node by control passage, carry out black chain
The verification of road optical parameter.
Here, black link optical interface parameter can include the general parameter of this transport network interface black link support
(General) it is 100GHz frequency interval, line coding bit rate is NRZ 10G；Single channel (Ss) transmitting terminal maximum, minimum
Power is+6dBm and -3dBm, and spectral range is 191.5THz to 196.2THz (C-band)；Between transmission channel and receiving channel
Light path signal to noise ratio maximum consumption is 5dB；Receiving terminal (Rs) power bracket is that -24dBm arrives -9dBm, and minimum signal to noise ratio demand is
21dB.It should be appreciated that only listing the optical parameter of part in the present embodiment.
The representative compatibility beche-de-mer without spike that a type is 9 is carried in DATA_LINK subobject in LinkSummary message
The TLV of number.This TLV contains and represents above-mentioned General, Ss, Ss to Rs, the sub- TLV of Rs parameter, for these parameter
The TLV present invention is not repeating.
Step 505, router node inquires about this node black link optical interface parameter after receiving LinkSummary message fixed
Justice, when the interface of router node meets the parameter definition of black link, returns LinkSummaryACK message to transmission node,
Confirm parameter verification success.
Specifically, when described router node supports the frequency interval of 100GHz, using the teaching of the invention it is possible to provide NRZ 10G line coding.
Between+6dBm and -3dBm, the tuning range of optical interface is in C-band scope to single pass transmission power；The light that can bear
Path noise specific consumption is more than 5dB；Receiver minimum signal to noise ratio require be less than 21dB, power tolerance range be more than or equal to-
The interval of 24dBm to -9dBm, the interface of router node meets the parameter definition of black link.
Step 506, transmission node completes black link parameter verification after receiving LinkSummaryACK message, and complains to biography
SCN Space Cable Network management system.
Now, the glory interface of router successfully realizes the compatibility interconnection and transmission equipment between.
Fig. 6 shows the flow process of the embodiment two of the management method of black link optical interface of the present invention, as shown in fig. 6, implementing
Remain router in example two to be connected by DWDM glory mouth with transmission equipment node.Exist between router and transmission net node
Band outer control passage.Initiate in embodiment two LMP_WDM for router node, black link is by the way of application code.Institute
State embodiment two to comprise the steps：
Step 601, router node is sent to adjacent node by control passage and comprises LMP_WDM_CONFIG object
CONFIG message.
Here, flag bit W=1 in described LMP_WDM_CONFIG object, represents that this node is supported based on RFC4209's
LMP_WDM agreement；Flag bit O=0, representing message sending end is client layer equipment side, and only receiving node is transmission equipment side
Node just can carry out LMP_WDM interaction, and flag bit B=1 represents this node and can support black link optical interface parameter verification.
Step 602, after adjacent transmission equipment side gusset receives LMP_WDM_CONFIG object, inquires about this node energy
Power, this node also supports the LMP_WDM agreement based on RFC4209, and belongs to transmission equipment side gusset, and supports that black link light connects
During mouth parameter verification, ConfigACK message is sent to router by control passage.
Step 603, transmission equipment node passes through to inquire about the parameter of the black LI(link interface) of present networks, and sends LinkSummary
Message, and carry corresponding black link optical interface parameter type in the sub- TLV of the Application in LinkSummary message.
The application code is taken to represent the parameter of black link in the present embodiment, when transmission equipment node finds to support
Black link optical interface parameter has two kinds of Application code1 and Application code2, and it represents two kinds of differences respectively
General, Ss, Ss to Rs, Rs parameter type.It should be appreciated that this code can be string number, may also be specific word
G.698.2 symbol, it is also possible to a combination of both, specifically can be found in.
Step 604, router node inquires about this node capacity after receiving LinkSummary message, support Application
The parameter definition of code1 and Application code2, returns LinkSummaryACK message to transmission equipment node, confirms
Parameter verification success.
Step 605, transmission equipment node receives LinkSummaryACK message, completes black link parameter verification, and complains to
To transmission NMS.
Then the glory interface of router successfully realizes the compatibility interconnection and transmission equipment between.
It should be appreciated that in step 604, if router node only supports a certain application code, such as
Application code2, then, router node just returns LinkSummaryNACK message to transmission node, carries and only props up
The sub- TLV of the Application code2 holding；Then transmission equipment node initiates LinkSummary message again, only carries
The sub- TLV of Application code2 is verified.Return to transmission node again after router node checking
LinkSummaryACK message, confirms parameter verification success.Transmission node receives LinkSummaryACK message, completes black link
Parameter verification, and complain to transmission NMS.This router glory interface only supports the ginseng of Application code2
Number, the router glory interface compatibility that can meet Application code2 with other interconnects.
Additionally, the present invention is not limited only to the point-to-point networking structure in above-described embodiment, it also is adapted for ring network, mesh
Networking structure.The network mode being not limited only to one-way transmission is simultaneously applicable to the network mode of transmitted in both directions.
Fig. 7 shows the structure of the managing device of black link optical interface of the present invention, as shown in fig. 7, described device includes：Sentence
Disconnected unit, verification unit；Wherein,
Described judging unit, for when two nodes are for the relation of transmission equipment and client layer equipment, judging that transmission sets
Whether standby and client layer equipment supports the parameter verification function of black link optical interface；
Described verification unit, for when described two nodes support described black link optical interface parameter verification function when,
Parameter verification is carried out by control passage.
Wherein, described judge module, is additionally operable to judge whether described two nodes support LMP_WDM；Specifically, according to
Have been defined for the flag bit W in LMP_WDM_CONFIG object in RFC4209LMP_WDM LMP Link Manager Protocol to judge whether to prop up
Hold LMP_WDM, such as according to the CONFIG message including LMP_WDM_CONFIG object receiving, judge to send this CONFIG
Whether the node of message supports LMP_WDM, when flag bit W puts 1, represents and supports LMP_WDM, when flag bit W sets to 0, represents and does not prop up
Hold LMP_WDM；The node receiving described CONFIG message can judge whether to support black link light by inquiring about this node capacity
The parameter verification of interface, is judged especially by flag bit W in LMP_WDM_CONFIG object, when flag bit W puts 1, table
Show support LMP_WDM, when setting to 0, represent and do not support LMP_WDM；
When described two nodes all support described LMP_WDM, determine whether whether described two nodes are that transmission sets
The standby relation with client layer equipment, specifically, can be by the CONFIG including LMP_WDM_CONFIG object receiving
Message, judges that the node sending described CONFIG message is client layer equipment or transmission equipment, specifically can pass through LMP_
In WDM_CONFIG object, flag bit O is judged, when flag bit O put 1 show to send this message for client layer equipment, set to 0
Represent send this message for transmission equipment.
The node receiving described CONFIG message can judge whether to support that black link light connects by inquiring about this node capacity
The parameter verification of mouth, is judged especially by flag bit O in LMP_WDM_CONFIG object, shows to send when flag bit O puts 1
This message for client layer equipment, set to 0 represent send this message for transmission equipment.
Wherein, described judge module, specifically for according to the flag bit pre-setting, judging described transmission equipment and client
Whether layer equipment supports the parameter verification function of black link optical interface, specifically can include LMP_WDM_ according to receive
The CONFIG message of CONFIG object, judges whether the node sending described CONFIG message supports the parameter of black link optical interface
Verification, specifically can be judged by flag bit B in LMP_WDM_CONFIG object, support when flag bit B puts 1 expression, set to 0
Represent and do not support.
The node receiving described CONFIG message can judge whether to support that black link light connects by inquiring about this node capacity
The parameter verification of mouth, is judged especially by flag bit B in LMP_WDM_CONFIG object, shows to prop up when flag bit B puts 1
Hold, set to 0 expression and do not support.
Wherein, described verification unit, is additionally operable to after the completion of verification, by the interface of described transmission equipment and client layer equipment
It is set to compatibility, and is reported, specifically, transmission equipment receives LinkSummaryACK message, completes black link
The parameter verification of optical interface is it is possible to complain to transmission NMS, now, the glory cause for gossip of client layer equipment is existing and passes
Send the compatibility interconnection between equipment.
Wherein, described verification unit, is sent by control channel specifically for triggering transmission equipment and carries black link light
The LinkSummary message of interface parameters TLV, to client layer equipment, carries out parameter verification, and specifically, transmission equipment passes through to control
Channel sends LinkSummary message to client layer equipment, takes in described LinkSummary message in DATA_LINK subobject
The TLV of the representative black link compatibility optical parameter being 9 with a type, to carry out parameter verification；Client layer equipment receives
After LinkSummary message, inquire about this node capacity, when client layer equipment interface meets the parameter definition of black link, Xiang Chuan
Send equipment to return LinkSummaryACK message, confirm parameter verification success, otherwise for unsuccessful.
In addition, it will be appreciated that the managing device of above-mentioned black link optical interface can be built in as Fig. 2 b in practical application
In shown black link transmission equipment A and client layer equipment B, C, its specific work process is essentially identical with said apparatus,
Repeat no more.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.
Claims (10)
1. a kind of management method of black link optical interface is it is characterised in that methods described includes：
When two nodes are for the relation of transmission equipment and client layer equipment, judge whether transmission equipment and client layer equipment are supported
The parameter verification function of black link optical interface；
When described two nodes support the parameter verification function of described black link optical interface, line parameter school is entered by control passage
Test.
2. described, method according to claim 1 is it is characterised in that judge whether transmission equipment and client layer equipment prop up
Before holding the parameter verification function of black link optical interface, methods described also includes：
Judge whether described two nodes support LMP_WDM；
When described two nodes all support described LMP_WDM, determine whether whether described two nodes are transmission equipment and visitor
The relation of family layer equipment.
3. method according to claim 1 is it is characterised in that described judge whether transmission equipment and client layer equipment are supported
The parameter verification function of black link optical interface is：
According to the flag bit pre-setting, judge whether described transmission equipment and client layer equipment support the ginseng of black link optical interface
Number verifying function.
4. method according to claim 1 is it is characterised in that after carrying out parameter verification by control passage, described
Method also includes：
After the completion of verification, the interface of described transmission equipment and client layer equipment is set to compatibility, and is reported.
5. the method according to any one of Claims 1-4 is it is characterised in that described enter line parameter school by control passage
Test for：
Transmission equipment is summarized LinkSummary by the link that control channel transmission carries black link optical interface parameter TLV and is disappeared
Cease to client layer equipment, carry out parameter verification.
6. a kind of managing device of black link optical interface is it is characterised in that described device includes：Judging unit, verification unit；Its
In,
Described judging unit, for when the relation that two nodes are transmission equipment and client layer equipment, judge transmission equipment with
Whether client layer equipment supports the parameter verification function of black link optical interface；
Described verification unit, for when described two nodes support described black link optical interface parameter verification function when, pass through
Control passage carries out parameter verification.
7. device according to claim 6, it is characterised in that described judging unit, is additionally operable to judge described two nodes
Whether support LMP_WDM；When described two nodes all support described LMP_WDM, determine whether that whether described two nodes are
Transmission equipment and the relation of client layer equipment.
8. device according to claim 6, it is characterised in that described judging unit, pre-sets specifically for basis
Flag bit, judges whether described transmission equipment and client layer equipment support the parameter verification function of black link optical interface.
9. device according to claim 6, it is characterised in that described verification unit, is additionally operable to after the completion of verification, by institute
State transmission equipment and the interface of client layer equipment is set to compatibility, and reported.
10. the device according to any one of claim 6 to 9 is it is characterised in that described verification unit, specifically for triggering
Transmission equipment is set to client layer by the LinkSummary message that control channel transmission carries black link optical interface parameter TLV
Standby, carry out parameter verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318042.6A CN103067073B (en) | 2011-10-19 | 2011-10-19 | A kind of management method of black link optical interface and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318042.6A CN103067073B (en) | 2011-10-19 | 2011-10-19 | A kind of management method of black link optical interface and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103067073A CN103067073A (en) | 2013-04-24 |
| CN103067073B true CN103067073B (en) | 2017-03-01 |
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Citations (3)
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| WO2009100580A1 (en) * | 2008-02-04 | 2009-08-20 | Zte Corporation | A system and method for implementing automatic discovery function in dwdm network |
| CN101888573A (en) * | 2009-05-15 | 2010-11-17 | 中兴通讯股份有限公司 | Method and system for discovering resource state between adjacent nodes automatically |
| CN102006270A (en) * | 2009-08-28 | 2011-04-06 | 华为技术有限公司 | Negotiation method of link capability information, network equipment and communication system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009100580A1 (en) * | 2008-02-04 | 2009-08-20 | Zte Corporation | A system and method for implementing automatic discovery function in dwdm network |
| CN101888573A (en) * | 2009-05-15 | 2010-11-17 | 中兴通讯股份有限公司 | Method and system for discovering resource state between adjacent nodes automatically |
| CN102006270A (en) * | 2009-08-28 | 2011-04-06 | 华为技术有限公司 | Negotiation method of link capability information, network equipment and communication system |
Non-Patent Citations (2)
| Title |
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| 《Link Management Protocol (LMP) for;J.Lang，Ed.，Sonos，Inc.;《IETF,RFC 4209》;20051031;全文 * |
| 《具有单路光接口的放大多路密集波分复用应用》;国际电信联盟;《国际电信联盟ITU-T G.698.2建议书》;20091130;正文第1页第1-9行,第3页第30行-第4页第2行,图5-1、5-2,附录Ⅱ * |
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