CN101192892B - Method for preventing the multiplexing band switch cancellation for damaging the service - Google Patents
Method for preventing the multiplexing band switch cancellation for damaging the service Download PDFInfo
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- CN101192892B CN101192892B CN2006101453216A CN200610145321A CN101192892B CN 101192892 B CN101192892 B CN 101192892B CN 2006101453216 A CN2006101453216 A CN 2006101453216A CN 200610145321 A CN200610145321 A CN 200610145321A CN 101192892 B CN101192892 B CN 101192892B
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Abstract
The invention discloses a method for avoiding the revocation of the switching of the multiplexing section from causing the damage to the services, which solves the problem that the immediate revocation of the switching of the multiplexing section causes the damage to the services under the circumstance that an optical processing unit is plugged to be switched on to run once again. The bottom three bits, '100', of the K2 byte reserved in No. G. 841 proposal in the SDH frame structure is utilized as the unplugging action information of the upstream optical processing unit transmitted by the signaling to downstream optical processing unit to accomplishing protecting the switching of the multiplexing section cooperatively and avoids the revocation of the switching of the multiplexing section from causing the damage to the services. The invention can be very simply implemented, does not need to increase the additional cost and can be also extended for the circumstance that other processingunits involve the protective switching of the multiplexing section are inserted and unplugged.
Description
Technical field
The present invention relates to optical communication SDH (Synchronous Digital Hierarchy) (SDH) field, relate in particular to a kind of multiplex section rearrangement of avoiding and cancel the method that business is produced damage.
Technical background
G.841 number suggestion and G.842 number suggestion that the ITU-T of International Telecommunication Association proposes have been done regulation on algorithm and the agreement to the multiplex section protection exchanging of the SDH network equipment.G.841 number suggestion has stipulated that Signal Fail (SF) as one of condition that triggers multiplex section protection exchanging, causes that the reason of Signal Fail (SF) comprises LOS, LOF, MS-AIS, B2_EXC alarm etc.But the influence of these alarms to multiplex section protection exchanging further do not discussed in suggestion.As consider the LOS alarm, and it may be broken by optical fiber and cause, also may be by plug optical processing unit, and laser shutdown causes.LOS under the both of these case is differentiated to the influence of multiplex section protection exchanging.Disconnected in this case at optical fiber, the LOS acknowledged alarm can be cancelled multiplex section rearrangement after disappearing immediately.And under the plug of optical processing unit powered on the situation of reruning, some just can reach stable state with professional relevant electronic devices and components preheated one-section that must power on after the time in the optical processing unit.If cancel multiplex section rearrangement this moment immediately, these electronic devices and components are in a kind of unsure state because warm-up time is not enough, business are had the situation of damage with error code etc. occurring.
Summary of the invention
Defective and deficiency at the prior art existence, the invention provides a kind of multiplex section rearrangement of avoiding and cancel the method that business is produced damage, avoid multiplex section rearrangement to cancel, and business is produced damage because of the electronic devices and components on the optical processing unit are not enough warm-up time that powers on.
For achieving the above object, the present invention by the following technical solutions: a kind of multiplex section rearrangement of avoiding of the present invention is cancelled the method that business is produced damage, comprises the steps:
Steps A after the optical processing unit plug of arbitrary node powers on and reruns in the multiplex section protection group, becomes ' 100 ' to low three of the K2 byte that sends to optical processing unit, downstream, cancels after a period of time is kept in the action that this K2 is low three slotting ' 100 ';
Step B is ' 100 ' if optical processing unit, downstream detects low three of K2 byte receiving, just produces the Signal Fail alarm and the notice APS processing unit that trigger multiplex section rearrangement, starts or keeps multiplex section rearrangement;
Step C if low three of the K2 byte that optical processing unit, downstream receives is not ' 100 ', exists simultaneously because of low three of K2 is ' 100 ' the Signal Fail alarm that produces, and then enabling signal fault alarm disappearance timer is set the timing threshold value;
Step D, if optical processing unit, downstream in the timing threshold value, low three of the K2 that receives is not ' 100 ', then cancels to the APS processing unit sending the Signal Fail alarm, the APS processing unit begins to cancel multiplex section rearrangement; Otherwise the cancellation timer is kept the multiplex section rearrangement state.
Preferably: cancel in the method that generation damages to business at the described multiplex section rearrangement of avoiding, described steps A is specially: the Optical Fiber Interface Board that plug A is ordered, A point Optical Fiber Interface Board powers on and reruns, utilize ' 100 ' plug action of low three reservations of K2 byte as signaling tabula rasa transmission downstream upstream tabula rasa, low three of the K2 byte that sends to the downstream is become ' 100 ', and the action that A point Optical Fiber Interface Board K2 is low three slotting ' 100 ' continues to cancel after the second.
Preferably: cancel in the method that generation damages to business at the described multiplex section rearrangement of avoiding; described step B is specially: it is ' 100 ' that B point Optical Fiber Interface Board detects low three of K2 byte; produce the Signal Fail alarm and give the APS processing unit, trigger or keep the multiplex section rearrangement that A point and B are ordered.
Preferably: cancel in the method that generation damages to business at the described multiplex section rearrangement of avoiding, described step C is specially: B point Optical Fiber Interface Board detects low three of K2 byte and is not ' 100 ', and enabling signal inefficacy disappearance timer is set the timing threshold value.
Preferably: cancel in the method that generation damages to business at the described multiplex section rearrangement of avoiding, described step D is specially: in the timing threshold range, if the action of plug Optical Fiber Interface Board does not take place in A point once more, B point Optical Fiber Interface Board just cancellation sends the Signal Fail alarm to the APS processing unit, and A point and B point enter multiplex section rearrangement and cancel state; If the action of plug Optical Fiber Interface Board takes place the A point once more, B point Optical Fiber Interface Board changes steps A and handles again with regard to cancelling signal fault alarm disappearance timer.
Preferably: cancel in the method that generation damages to business at the described multiplex section rearrangement of avoiding, described timer threshold re-powers according to the plug of optical processing unit, and the abundant preheating of its main electronic devices and components reaches the stable state required time and sets.
The method of the invention; after the optical processing unit plug of arbitrary node powers on and reruns in the multiplex section protection group; adjacent 2 multiplex section rearrangement can be kept a period of time and can not cancel; Deng the abundant preheating of the electronic devices and components on the optical processing unit; cancel multiplex section rearrangement after stable again, avoid its electronic devices and components fluctuation of service and business is produced damage.The present invention realizes very simply, not needing to increase extra cost.Also can expand to the situation that other participates in the processing unit generation plug of multiplex section protection exchanging.
Description of drawings
Fig. 1 cancels the flow chart that business is produced the method for damage for the present invention avoids multiplex section rearrangement;
Fig. 2 is for detecting the generation and the disappearance finite state machine of the low tribute signal inefficacy of K2 (SF).
Embodiment
The main thought of the present invention be utilize K2 byte in the SDH frame structure low three G.841 reserve in number suggestion ' 100 ' transmit the plug action message of optical processing unit, upstream in the optical processing unit downstream as signaling; cooperate and finish multiplex section protection exchanging, avoid multiplex section rearrangement to cancel business is produced damage.With reference to accompanying drawing 1, the present invention includes following steps:
Steps A after the optical processing unit plug of arbitrary node powers on and reruns in the multiplex section protection group, becomes ' 100 ' to low three of the K2 byte that sends to optical processing unit, downstream, cancels after a period of time is kept in the action that this K2 is low three slotting ' 100 ';
Step B is ' 100 ' if optical processing unit, downstream detects low three of K2 byte receiving, just produces the Signal Fail alarm and the notice APS processing unit that trigger multiplex section rearrangement, starts or keeps multiplex section rearrangement;
Step C if low three of the K2 byte that optical processing unit, downstream receives is not ' 100 ', exists simultaneously because of low three of K2 is ' 100 ' the Signal Fail alarm that produces, and then enabling signal fault alarm disappearance timer is set the timing threshold value;
Step D; if optical processing unit, downstream is in the timing threshold value; low three of the K2 that receives is not ' 100 '; then cancel to the APS processing unit and send the Signal Fail alarm; the APS processing unit begins to cancel multiplex section rearrangement; otherwise the cancellation timer is kept the multiplex section rearrangement state.
The K2 byte that the optical processing unit all needs handle to receive among step B, C, the D is not made any change and is given the APS processing unit; multiplex section protection exchanging algorithm and agreement are implemented according to the G.841 number suggestion of ITU-T simultaneously; be not affected, difference just trigger among the step B Signal Fail (SF) of multiplex section rearrangement many one produce the source.Step B, C, D relate generally to optical processing unit, downstream and detect the low tribute signal of K2 the lost efficacy generation and the disappearance process of (SF), and an available state machine represents, as shown in Figure 2.
Be example with the OL64 Optical Fiber Interface Board on adjacent network element A and the B in the Multiplex Section Shared Protection Ring below, this inventive method be described in further detail:
The OL64 Optical Fiber Interface Board that step 1, plug A are ordered, A point OL64 Optical Fiber Interface Board powers on and reruns, and low three of the K2 byte that sends to the downstream is become ' 100 '.
Step 2, B point OL64 Optical Fiber Interface Board detect low three of K2 byte and produce Signal Fail (SF) and give APS processing unit for ' 100 ', trigger or keep the multiplex section rearrangement that A point and B are ordered.
Step 3, the action that A point OL64 Optical Fiber Interface Board K2 is low three slotting ' 100 ' continue to cancel after the second.
It is not ' 100 ' that step 4, B point OL64 Optical Fiber Interface Board detect low three of K2 byte, starts Signal Fail (SF) disappearance timing in three minutes.
Step 5, in timing at interval, as three minutes, if the action of plug OL64 Optical Fiber Interface Board does not take place A point once more, B point OL64 Optical Fiber Interface Board just cancellation was alarmed to APS processing unit feed signals inefficacy (SF), A point and B point enter multiplex section rearrangement and cancel state; If the action of plug OL64 Optical Fiber Interface Board takes place the A point once more, B point OL64 Optical Fiber Interface Board is just cancelled three minutes Signal Fail (SF) disappearance timers.Changeing step 1 handles again.
Claims (4)
1. avoid multiplex section rearrangement to cancel the method that business is produced damage for one kind, comprise the steps:
Steps A after the optical processing unit plug of arbitrary node powers on and reruns in the multiplex section protection group, becomes ' 100 ' to low three of the K2 byte that sends to optical processing unit, downstream, cancels after a period of time is kept in the action that this K2 is low three slotting ' 100 ';
Step B is ' 100 ' if optical processing unit, downstream detects low three of K2 byte receiving, just produces the Signal Fail alarm and the notice APS processing unit that trigger multiplex section rearrangement, starts or keeps multiplex section rearrangement;
Step C if low three of the K2 byte that optical processing unit, downstream receives is not ' 100 ', exists simultaneously because of low three of K2 is ' 100 ' the Signal Fail alarm that produces, and then enabling signal fault alarm disappearance timer is set the timing threshold value;
Step D, if optical processing unit, downstream in the timing threshold value, low three of the K2 that receives is not ' 100 ', then cancels to the APS processing unit sending the Signal Fail alarm, the APS processing unit begins to cancel multiplex section rearrangement; Otherwise the cancellation timer is kept the multiplex section rearrangement state.
2. the multiplex section rearrangement of avoiding according to claim 1 is cancelled the method that business is produced damage, it is characterized in that described steps A is specially: the Optical Fiber Interface Board that plug A is ordered, A point Optical Fiber Interface Board powers on and reruns, utilize ' 100 ' plug action of low three reservations of K2 byte as signaling tabula rasa transmission downstream upstream tabula rasa, low three of the K2 byte that sends to the downstream is become ' 100 ', and the action that A point Optical Fiber Interface Board K2 is low three slotting ' 100 ' continues to cancel after the second.
3. the multiplex section rearrangement of avoiding according to claim 1 is cancelled the method that business is produced damage; it is characterized in that described step B is specially: it is ' 100 ' that B point Optical Fiber Interface Board detects low three of K2 byte; produce the Signal Fail alarm and give the APS processing unit, trigger or keep the multiplex section rearrangement that A point and B are ordered.
4. the multiplex section rearrangement of avoiding according to claim 1 is cancelled the method that business is produced damage, it is characterized in that: described timer threshold re-powers according to the plug of optical processing unit, and the abundant preheating of its main electronic devices and components reaches the stable state required time and sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101453216A CN101192892B (en) | 2006-11-24 | 2006-11-24 | Method for preventing the multiplexing band switch cancellation for damaging the service |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101453216A CN101192892B (en) | 2006-11-24 | 2006-11-24 | Method for preventing the multiplexing band switch cancellation for damaging the service |
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| CN101192892A CN101192892A (en) | 2008-06-04 |
| CN101192892B true CN101192892B (en) | 2011-11-30 |
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| CN2006101453216A Expired - Fee Related CN101192892B (en) | 2006-11-24 | 2006-11-24 | Method for preventing the multiplexing band switch cancellation for damaging the service |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101369848B (en) * | 2008-10-17 | 2011-02-09 | 烽火通信科技股份有限公司 | Method for monitoring optical transmission network multiplex section and optical passage signal quality |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757769A (en) * | 1994-03-18 | 1998-05-26 | Fujitsu Limited | Line switching control system in synchronous communication network system |
| CN1281302A (en) * | 1999-07-15 | 2001-01-24 | 深圳市华为技术有限公司 | Protective reversing and detecting method of synchronously triggered multiplexing band under multiple securities mechanism |
| CN1791096A (en) * | 2004-12-13 | 2006-06-21 | 华为技术有限公司 | Method for distinguishing LP-S and SF-P request in multiplex section protection |
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2006
- 2006-11-24 CN CN2006101453216A patent/CN101192892B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757769A (en) * | 1994-03-18 | 1998-05-26 | Fujitsu Limited | Line switching control system in synchronous communication network system |
| CN1281302A (en) * | 1999-07-15 | 2001-01-24 | 深圳市华为技术有限公司 | Protective reversing and detecting method of synchronously triggered multiplexing band under multiple securities mechanism |
| CN1791096A (en) * | 2004-12-13 | 2006-06-21 | 华为技术有限公司 | Method for distinguishing LP-S and SF-P request in multiplex section protection |
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| CN101192892A (en) | 2008-06-04 |
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