CN107342830B - A kind of realization Packet Transport Network performance deterioration localization method - Google Patents
A kind of realization Packet Transport Network performance deterioration localization method Download PDFInfo
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- 230000004807 localization Effects 0.000 title claims abstract description 8
- 230000004044 response Effects 0.000 claims abstract description 52
- 238000012423 maintenance Methods 0.000 claims abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
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- 230000010287 polarization Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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Abstract
This application provides a kind of realization Packet Transport Network performances to deteriorate localization method, this method comprises: by sending LB request message, enable intermediate PTN device and purpose PTN device auto-returned LB response message, and the timestamp for sending the message is carried in response message, source PTN device receives the timestamp of LB response message by record, and the timestamp carried in response message determines the chain-circuit time delay between two neighboring PTN device, to determine whether the delay performance of the link deteriorates.So as to quickly position delay performance deterioration link, and improve maintenance efficiency.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of realization Packet Transport Network performance deteriorates localization method.
Background technique
With the aggravation that carrier market competes, user experience becomes the emphasis of operator's concern.For basic bearer network
For network layers face, need persistently to improve the end-to-end QoS security mechanism based on customer perception.Group transmission network at present
(PTN) during carrying set-off special line or mobile base station passed-back traffic, lack effective end to end performance deterioration positioning means.
PTN network is using the tunnel layered service provider (LSP) the perhaps OAM mechanism of pseudo-wire (PW) or use at present
It is inserted into the mode of external meters probe, can monitor the performance deterioration of teleservice.But when detect performance deterioration with
Afterwards, there is packet loss in maintenance personnel's positioning or the position of delay performance deterioration is extremely difficult.
It is that PTN carries set-off special line networking schematic diagram referring to Fig. 1, Fig. 1.Metropolitan area PTN network is generally divided into metro core, converges
Poly- and three levels of access, network structure are relative complex.
Existing OAM mechanism is performance detection mechanism end to end.It, can be with for the performance deterioration that access layer occurs
Comprehensive judgement is carried out by landing service on access ring, does not detect that performance is bad on the LSP as reached company branch equipment 1
Change, and passes through the LSP that the corresponding PTN device of company branch equipment 1 reaches in company branch equipment 2 and performance deterioration occur, it can
With Primary Location performance deterioration point in company branch equipment 1 to the PTN chain road between company branch equipment 2.But for converging
Poly layer and core layer, business are relative complex, it is difficult to which positioning performance deteriorates point.
Summary of the invention
In view of this, the application provides a kind of realization Packet Transport Network performance deterioration localization method, it being capable of quick polarization
Link can be deteriorated, and improves maintenance efficiency.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A kind of realization Packet Transport Network PTN performance deteriorates localization method, applied to include N number of PTN device PTN in, by N
A PTN device is arranged according to from the sequence of source PTN device, intermediate PTN device and purpose PTN device, wherein source PTN device is
Safeguard that the PTN device where destination node MEP, intermediate PTN device are the PTN device where Maintenance Intermediate Point MIP, purpose PTN in source
Equipment is the PTN device where purpose MEP, this method comprises:
Source PTN device sends loopback LB request message；
When intermediate PTN device receives LB request message, LB request message is sent to purpose PTN device；And it is set to source PTN
Preparation send LB response message, carries the timestamp for sending the LB response message；
When purpose PTN device receives LB request message, LB response message is sent to source PTN device, carries and sends the LB
The timestamp of response message；
When source PTN device receives the LB response message that intermediate PTN device and purpose PTN device are sent, record is received
The timestamp of LB response message, and obtain the timestamp carried in the LB response message；
Source PTN device according to record, and the timestamp that obtains calculate the link between two neighboring PTN device when
Prolong；When the time delay of calculating is greater than default delay threshold, the link performance deterioration between the two neighboring PTN device is determined；It is no
Then, determine that the link performance between the two neighboring PTN device is normal.
As can be seen from the above technical solution, make intermediate PTN device and purpose by sending LB request message in the application
PTN device can auto-returned LB response message, and in response message carry send the message timestamp, source PTN device
Determine that two neighboring PTN is set by recording the timestamp carried in the timestamp and response message that receive LB response message
Link between standby prolongs, to determine whether the performance of the link deteriorates.Link is deteriorated so as to quick positioning performance, and is improved
Maintenance efficiency.
Detailed description of the invention
Fig. 1 is that PTN carries set-off special line networking schematic diagram；
Fig. 2 is PTN schematic diagram in the embodiment of the present application；
PTN performance deteriorates positioning flow schematic diagram in Fig. 3 the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples,
Technical solution of the present invention is described in detail.
A kind of realization Packet Transport Network performance deterioration localization method is provided in the embodiment of the present application, is applied to include source PTN
In the PTN of equipment, intermediate PTN device and purpose PTN device, source PTN device is that source safeguards that the PTN where destination node (MEP) is set
Standby, intermediate PTN device is the PTN device where Maintenance Intermediate Point (MIP), and purpose PTN device is that the PTN where purpose MEP is set
It is standby.
Referring to fig. 2, Fig. 2 is PTN schematic diagram in the embodiment of the present application.The PTN device being connected in Fig. 2 with company branch equipment
For source PTN device, i.e. PTN device 1, the MEP in the PTN device is source MEP, and the PTN device being connected with corporate HQ's equipment is
Purpose PTN device, i.e. PTN device 5, the MEP in the PTN device are purpose MEP, other PTN devices are intermediate PTN device, should
Node in PTN device is MIP.
N number of PTN device in the present embodiment in PTN is according to from source PTN device, intermediate PTN device and purpose PTN device
Sequence arranges, in Fig. 2, from source PTN device, intermediate PTN device to purpose PTN device serial number 1 to 5.Below with reference to attached
Figure is described in detail in the embodiment of the present application and realizes that PTN performance deteriorates position fixing process.Here PTN performance deteriorates, i.e. each in PTN
The performance of link between PTN device deteriorates, the performance deterioration of link refer to link whether congestion etc..
Referring to Fig. 3, PTN performance deteriorates positioning flow schematic diagram in Fig. 3 the embodiment of the present application.Specific steps are as follows:
Step 301, source PTN device sends LB request message.
Step 302, when intermediate PTN device receives LB request message, LB request message is sent to purpose PTN device；And
LB response message is sent to source PTN device, carries the timestamp for sending the LB response message.
Step 303, when purpose PTN device receives LB request message, LB response message is sent to source PTN device, is carried
Send the timestamp of the LB response message.
In the embodiment, intermediate PTN device and purpose PTN device increase the function of sending LB response message, that is, exist
When receiving LB request message, LB response message is returned to source PTN device, and carry in the LB response message and send the LB
The timestamp of response message.
Intermediate PTN device sends the realization co-occurrence of LB request message to purpose PTN device when receiving LB request message
There is realization.
LB request message is sent in the embodiment and the priority of LB response message is set as preferential with LSP service message
Grade is identical, is able to reflect network because of packet loss phenomenon caused by congestion.If the priority of service message changes, sends LB and ask
It asks the priority of message and LB response message equally to follow variation, that is, keeps consistent with LSP service priority.
Step 304, when source PTN device receives the LB response message that intermediate PTN device and purpose PTN device are sent,
Record receives the timestamp of LB response message, and obtains the timestamp carried in the LB response message.
Pair source PTN device obtains the timestamp carried in the LB response message when receiving a LB response message, i.e.,
End PTN device sends the timestamp of the LB response message, and records the timestamp for receiving the LB response message；It need to also be in transmission pair
When answering LB request message, record sends the timestamp of corresponding LB request message.
Step 305, source PTN device is according to record, and the timestamp obtained calculates the chain between two neighboring PTN device
The time delay on road；When the time delay of calculating is greater than default delay threshold, determine that the link performance between the two neighboring PTN device is bad
Change；Otherwise, it determines the link performance between the two neighboring PTN device is normal.
The time delay of link in the present embodiment between two neighboring PTN device includes: double between two neighboring PTN device
To the chain-circuit time delay in LB response message direction between chain-circuit time delay and two neighboring PTN device.
The calculation method of the two-way link time delay between two neighboring PTN device is provided first below:
When two neighboring PTN device arrives i+1 PTN device for i-th, between i-th and i+1 PTN device
Two-way link time delay delayI~i+1Are as follows:
As i=1,
As i > 1,
Wherein, i is 1 integer for arriving N, tampSSFor the timestamp for sending LB request message；To receive i+1
The timestamp for the correspondence LB response message that PTN device is sent；To receive the correspondence LB response that i-th of PTN device is sent
The timestamp of message.
Then the chain-circuit time delay in LB response message direction between two neighboring PTN device is provided:
When two neighboring PTN device arrives i+1 PTN device for i-th, between i-th and i+1 PTN device
The chain-circuit time delay in LB response message directionAre as follows:
As i=1,
As i > 1,
Wherein,The timestamp of LB response message is sent for i+1 PTN device；It is set for i-th of PTN
Preparation send the timestamp of corresponding LB response message.
The present embodiment in specific implementation, can determine unidirectional chain-circuit time delay, can also determine the link of twocouese
Time delay；If two kinds of time delays all determine, when determining the two-way link between two neighboring PTN device, there are links, and LB is rung
When answering message direction link normal, the LB request message direction link between two neighboring PTN device is determined.
According to concrete application, default delay threshold, which is arranged, for twocouese and one direction can be the same or different.
In specific implementation, the timestamp for sending the message can also be carried in LB request message, receiving the LB
When request message, record receives the timestamp of the LB request message, thus in intermediate PTN device and purpose PTN device,
The link performance for positioning LB request message direction deteriorates position.
It is realized unidirectional and two-way by way of beating timestamp in the embodiment when sending LB message in PTN device
Latency measurement, with positioning performance deteriorate position.
In conclusion the application cannot terminate and respond LM/DM message by the PTN device routed in order to avoid LSP
This intrinsic mechanism, by being extended to LB mechanism, this feature of LB message can be received and dispatched by inheriting in-between PTN device,
When sending LB message in PTN device by way of beating timestamp, unidirectional and two-way latency measurement is realized, with polarization
Position can be deteriorated.
It by the technical program, solves the performance deterioration that can only find teleservice in PTN network, and can not achieve
That section of link is quickly positioned in maintenance process and the problem of performance deterioration occurs, substantially increases maintenance efficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (4)
1. a kind of realization Packet Transport Network PTN performance deteriorates localization method, applied to include N number of PTN device PTN in, it is special
Sign is, N number of PTN device is arranged according to from the sequence of source PTN device, intermediate PTN device and purpose PTN device, wherein source
PTN device is the PTN device where source maintenance destination node MEP, and intermediate PTN device is that the PTN where Maintenance Intermediate Point MIP is set
Standby, purpose PTN device is the PTN device where purpose MEP, this method comprises:
Source PTN device sends loopback LB request message；
When intermediate PTN device receives LB request message, LB request message is sent to purpose PTN device；And it is sent out to source PTN device
LB response message is sent, the timestamp for sending the LB response message is carried；
When purpose PTN device receives LB request message, LB response message is sent to source PTN device, carries and sends LB response
The timestamp of message；
When source PTN device receives the LB response message that intermediate PTN device and purpose PTN device are sent, record receives LB and rings
The timestamp of message is answered, and obtains the timestamp carried in the LB response message；
Source PTN device is according to record, and the timestamp that obtains calculates the time delay of the link between two neighboring PTN device；When
When the time delay of calculating is greater than default delay threshold, the link performance deterioration between the two neighboring PTN device is determined；Otherwise, really
Link performance between the fixed two neighboring PTN device is normal；
Wherein, the method further includes:
The priority for sending the LB request message and LB response message is set as and layered service provider LSP service message
Priority is identical.
2. the method according to claim 1, wherein the time delay of the link between the two neighboring PTN device
It include: the two-way link time delay between two neighboring PTN device；
It is double between i-th and i+1 PTN device when two neighboring PTN device arrives i+1 PTN device for i-th
To chain-circuit time delay delayI~i+1Are as follows:
As i=1,
As i > 1,
Wherein, i is 1 integer for arriving N, tampSSFor the timestamp for sending LB request message；It is set to receive i+1 PTN
The timestamp for the correspondence LB response message that preparation is sent；To receive the correspondence LB response message that i-th PTN device is sent
Timestamp.
3. according to the method described in claim 2, it is characterized in that, the time delay of the link between the two neighboring PTN device
Further include: the chain-circuit time delay in LB response message direction between two neighboring PTN device；
When two neighboring PTN device arrives i+1 PTN device for i-th, LB is rung between i-th and i+1 PTN device
Answer the chain-circuit time delay in message directionAre as follows:
As i=1,
As i > 1,
Wherein,The timestamp of LB response message is sent for i+1 PTN device；It is sent for i-th of PTN device
The timestamp of corresponding LB response message.
4. according to the method described in claim 3, it is characterized in that, the method further includes:
When determine the two-way link between two neighboring PTN device there are link performance deterioration, and LB response message direction link
When performance is normal, the LB request message direction link performance deterioration between two neighboring PTN device is determined.
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| WO2019152509A1 (en) * | 2018-01-31 | 2019-08-08 | Assia Spe, Llc | Systems and methods for broadband communication link performance monitoring |
| CN114338465A (en) * | 2020-09-25 | 2022-04-12 | 华为技术有限公司 | Network anomaly determination method and device |
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| EP2408128A1 (en) * | 2010-07-15 | 2012-01-18 | Alcatel Lucent | Interworking agent adapted to interact between network and Precision Time Protocol entities |
| CN102594582A (en) * | 2011-01-14 | 2012-07-18 | 中兴通讯股份有限公司 | Looping back method and system of message |
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| CN103888295B (en) * | 2014-03-07 | 2017-03-15 | 烽火通信科技股份有限公司 | The method and system of LSP quick detections are realized in PTN/IPRAN webmasters based on loopback |
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|---|---|---|---|---|
| CN101420383A (en) * | 2008-12-12 | 2009-04-29 | 北京邮电大学 | ECMP path soft resuming method in MPLS-TP packet transmission network |
| CN101631016A (en) * | 2009-04-14 | 2010-01-20 | 华中科技大学 | Time synchronization method of fieldbus |
| EP2408128A1 (en) * | 2010-07-15 | 2012-01-18 | Alcatel Lucent | Interworking agent adapted to interact between network and Precision Time Protocol entities |
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