CN1925415A - Method and device for inverting mode match verifying of protected field both extremities protecting group - Google Patents
Method and device for inverting mode match verifying of protected field both extremities protecting group Download PDFInfo
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- CN1925415A CN1925415A CN 200510093412 CN200510093412A CN1925415A CN 1925415 A CN1925415 A CN 1925415A CN 200510093412 CN200510093412 CN 200510093412 CN 200510093412 A CN200510093412 A CN 200510093412A CN 1925415 A CN1925415 A CN 1925415A
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Abstract
This invention discloses one inverse mode matching test method of protection set, which comprises the following steps: a, two ends of protection area send inverse automatic protection signal with local end protection set to partner end; b, local end receives APS signal for analysis and to judge whether the part end protection set inverse mode and local end protection end type to generate alarm indication. This invention comprises signal send module, signal receive and analysis module, compare module and alarm generation module.
Description
Technical field
The present invention relates to network protection, refer to the Switch mode coupling method of calibration and the device of a kind of protected field two ends protection group especially.
Background technology
In transmission network; generally the transmitting terminal network element is called protected field to zone between the receiving terminal network element; in the network element of protected field two ends, control logic can be set; in order to switching of the service aisle of controlling this network element and protection passage, the control logic that we will controls one or more pairs of service aisles and protect passage to switch is referred to as the protection group.
ATM (Asynchronous Transfer Mode, asynchronous transfer mode) protection group Switch mode (being that service aisle and protection passage are directly switched mutually) has two kinds: unidirectional switching and two-way switching.
So-called unidirectional switching when being exactly one of them service disconnection of sending direction or receive direction, is only switched the active link of this direction, and the active link of another one direction is not switched; Even the A end sends business datum to the B end, and A end sending direction active link fault then A is held the sending direction active link to be switched on the transmission link of protection passage, and the receive direction active link is not switched.
So-called two-way switching is exactly no matter to receive and dispatch any one direction service disconnection, and the active link of transmitting-receiving both direction is switched simultaneously; Even the A end sends business datum to the B end, and A end sending direction active link fault then not only holds A the sending direction active link to be switched on the transmission link of protection passage, simultaneously A termination debit is switched on the reception link of protection passage to active link.
Only stipulated use APS (Automatic ProtectionSwitching in ITUT (I.630) standard at present, APS) the agreement cell different coded system of K2 byte of carrying, realization is mated verification to the protected mode (being 1+1 protection mode and 1: 1 protected mode) of protected field two ends protection group, does not then produce the alarm indication that do not match if match; And do not have regulation how the Switch mode of protection group to be mated the method for verification.
In actual use; when the protected mode of protection group is protection in 1: 1 or 1: during the N protection; if the Switch mode of protected field two ends protection group does not match; promptly an end is two-way switching; when the other end is unidirectional switching; switch when any end wherein, all can cause service disconnection, but can not produce any alarm indication.
As shown in Figure 1, suppose to adopt 1: 1 protected mode between transmitting terminal (A end) network element and receiving terminal (B end) network element, during the regular traffic state, business datum transmits by the service aisle between A end and the B end.
If the protection group Switch mode of A end configuration is a unidirectional switching, the protection group Switch mode of B end configuration is two-way switching, if the active link fault of A end sending direction, the B end is received alarm signal, B end protection group starts service aisle and protects switching of passage, because the protection group Switch mode of B end configuration is two-way switching, then the active link of transmit-receive position is switched simultaneously; Switch finish after, send switching notification message to A end, by OMA (Operation, Administration and Maintenance) the cell notice A end that carries the K1K2 byte, the protection group of B end has taken place to switch.The A end also needs to switch accordingly after receiving the switching notification message of B end transmission; But because the Switch mode of A end configuration is a unidirectional switching, then the A end is only switched the active link of sending direction, and the active link of receive direction is not switched, as shown in Figure 2, like this, because B holds the active link of sending direction to switch, and A holds the active link of corresponding receive direction not carry out corresponding switching, make A termination debit to service disconnection, and without any alarm indication.
Summary of the invention
The invention provides the Switch mode coupling method of calibration of a kind of protected field two ends protection group; in order to solve exist in the prior art at 1: 1 or 1: under the N protected mode; when the Switch mode of protected field two ends protection group does not match; after if wherein an end generation protection group is switched, cause service disconnection and don't can produce the problem of any alarm indication.
The invention provides the Switch mode coupling method of calibration of a kind of protected field two ends protection group, be applied to optical-fiber network, this method comprises:
A, protected field two ends network element send APS (APS) cell of the Switch mode that carries local terminal protection group respectively to the opposite end;
B, local terminal network element are resolved after receiving the APS cell that the opposite end sends, if it is inequality with the Switch mode of local terminal protection group to judge the Switch mode of opposite end protection group, then produces alarm and indicate.
Described APS cell sends by service aisle and/or the protection passage of setting up between the network element of protected field two ends.
The APS cell that carry K1K2 byte of described APS cell for using in existing ITUT (I.630) standard, and in this APS cell, expand a K3 byte, the Switch mode information of using this K3 byte to carry local terminal protection group sends to the opposite end; And after receiving the APS cell that the opposite end sends, extract described K3 byte and resolve, obtain the Switch mode information of opposite end protection group.
The two ends network element sends described APS cell by setting cycle to the opposite end.
According to said method of the present invention, among the described step B, the number of times inequality as if the Switch mode of the Switch mode of judging local terminal protection group continuously and opposite end protection group reaches preset threshold, then produces described alarm indication.
Counter is set, in order to count described number of times inequality respectively in the network element of two ends.
If it is identical with the Switch mode of opposite end protection group to judge the Switch mode of local terminal protection group, then make described counter O reset.
If do not receive the APS cell that the opposite end sends in several setting cycles continuously, then make described counter O reset.
Among the described step B,, then abandon the APS cell of reception if it is identical with the Switch mode of opposite end protection group to judge the Switch mode of local terminal protection group; Otherwise, preserve the APS cell information that receives.
Behind alarm clearing, the APS cell information that deletion is preserved.
Protection group Switch mode coupling calibration equipment provided by the invention comprises:
The cell sending module: the APS cell that sends the Switch mode that carries local terminal protection group is to the opposite end;
Cell receives parsing module: receive the APS cell that the opposite end sends, and resolve;
Comparison module: the Switch mode of the protection group of the Switch mode of the opposite end protection group that parses and local terminal setting is compared, if do not match, then output signal is to the alarm generation module;
Alarm generation module: produce alarm indication signal.
According to said apparatus of the present invention, also include a counter, be connected with described comparison module, when the Switch mode of judging two ends protection group when comparison module does not match, output signal to counter, make the count value of counter add 1; When comparison module is judged the Switch mode coupling of two ends protection group, output signal to counter, make counter O reset.
The other end of this counter links to each other with the alarm generation module, and when the count value of counter was the division of a ci poem value of setting, alarm module then produced the alarm indication.
Beneficial effect of the present invention is as follows:
(1) whether the present invention's Switch mode that can detect protected field two ends working group in real time mates, and when not matching, sends alarm signal; Therefore; adopt the inventive method when the Switch mode of Switch mode that detects an end working group and other end working group is inequality; can in time adjust, thereby efficiently solve under 1: 1 protected mode the do not match problem of the service disconnection that causes of Switch mode owing to two ends working group.
(2) the inventive method utilizes service aisle and the protection passage set up between the network element of protected field two ends to transmit working group's Switch mode, realizes simple, convenient.
Description of drawings
Fig. 1 is that the business datum of protected field two ends network element under normal condition transmits schematic diagram;
When Fig. 2 is the service aisle fault, the Switch mode of the two ends protection group link switchover schematic diagram under the state that do not match;
Fig. 3 protected mode under by service aisle and protection passage transmission carries the APS cell schematic diagram of protection group Switch mode information for the present invention at 1: 1;
Fig. 4 is the present invention 1: carry the APS cell schematic diagram of protection group Switch mode information by service aisle and the transmission of protection passage under the N protected mode;
Fig. 5 will have the cell byte structure schematic diagram that the APS cell expands a K3 byte now for the present invention;
Fig. 6 is apparatus of the present invention structural representation.
Embodiment
As shown in Figure 3, be to send by service aisle and protection passage under 1: 1 protected mode to carry the APS cell schematic diagram of protection group Switch mode information, as shown in the figure, protected field two ends network element sends APS (APS) cell of the Switch mode that carries local terminal protection group respectively to the opposite end; After the local terminal network element is received the APS cell that the opposite end sends, parse the Switch mode information of the opposite end protection group of wherein carrying, and compare, if both unanimities, show that then the Switch mode that protection group in two ends is provided with is identical with the protection group Switch mode of local terminal setting; If both are inconsistent, then produce the alarm indication, the prompting user should adjust the protection group Switch mode that is provided with in the network element of two ends, makes it consistent.
In the said method of the present invention, can utilize the service aisle of having set up between the network element of protected field two ends to transmit in order to the APS cell that carries protection group Switch mode information; Also can on the protection passage, transmit,, also can on service aisle and protection passage, transmit this APS cell simultaneously for fear of working or protecting passage that the situation of interruption is arranged.
Fig. 4 is 1: carry the APS cell schematic diagram of protection group Switch mode information by service aisle and the transmission of N protection passage under the N protected mode; it realizes that principle is identical with 1: 1 protected mode, only sends the APS cell (also can select N the one or more transmissions in the protection passage to carry the APS cell of protection group Switch mode information) that carries protection group Switch mode information simultaneously on N protection passage.
The APS cell that carries protection group Switch mode information in the said method can be the APS cell that carries K1, K2 byte that uses in existing ITUT (I.630) standard; K3 byte of expansion in this existing APS cell, the Switch mode information of using this K3 byte to carry local terminal protection group sends to the opposite end.
For example: the value of definition K3 byte is:
00000000 is the unidirectional switching pattern;
00000001 is two-way Switch mode.
The K3 byte can be arranged in the payload of ATM cell, as shown in Figure 5, the K3 byte can be placed on any one position of 4～48byte (byte) of payload.
In said method of the present invention, the two ends network element can send described APS cell to the opposite end respectively by setting cycle; And after receiving the APS cell that the opposite end sends, if continuously several times (such as 3 times) to judge the Switch mode of local terminal protection group inequality with the Switch mode of opposite end protection group, then produce alarm and indicate.Can certainly be set at the Switch mode of the Switch mode of once judging local terminal protection group and opposite end protection group when inequality; just produce the alarm indication; but considering might be owing to network transmits reasons such as the shake of signal or error code; a corresponding threshold value generally should be set; when the Switch mode of the Switch mode of judging local terminal protection group continuously and opposite end protection group number of times inequality reaches the threshold value that sets, just produce the alarm indication.
For the Switch mode that counts local terminal protection group and the Switch mode number of times inequality of opposite end protection group; counter can be set respectively in the network element of two ends; when the Switch mode of the Switch mode of judging a local terminal protection group and opposite end protection group is inequality; make counter add 1; when the count value of counter reaches setting threshold, produce the alarm indication.
In said method of the present invention,, then can abandon the APS cell of reception if it is identical with the Switch mode of opposite end protection group to judge the Switch mode of local terminal protection group; Otherwise, the APS cell information that receives can be preserved, and generate respective record, for future reference as the network element log category information.
In order to save the network element memory space, behind this alarm clearing, also can remove the APS cell information of preservation.
According to said method of the present invention, the present invention provides a kind of protection group Switch mode coupling calibration equipment in addition, as shown in Figure 6, comprising:
The cell sending module: the APS cell that sends the Switch mode that carries local terminal protection group is to the opposite end;
Cell receives parsing module: receive the APS cell that the opposite end sends, and resolve;
Comparison module: the Switch mode of the protection group of the Switch mode of the opposite end protection group that parses and local terminal setting is compared, if do not match, then output signal is to the alarm generation module;
Alarm generation module: produce alarm indication signal.
In said apparatus of the present invention, can also comprise a counter, be connected with described comparison module, when the Switch mode of judging two ends protection group when comparison module does not match, output signal to counter, make the count value of counter add 1; When detecting two ends Switch mode coupling, then make counter clear 0, and counting no longer; If several (as 3) sense cycle are not received the APS cell (as under the situation of link down) that carries the K3 byte continuously, then make counter clear 0.
In sum, whether the Switch mode that adopts the present invention can detect protected field two ends working group in real time mates, and when not matching, sends alarm signal; The network management personnel can in time adjust by the prompting of alarm signal; make the Switch mode of protected field two ends working group consistent, thereby efficiently solve under 1: 1 protected mode owing to the Switch mode of the two ends working group problem of service interruption that causes inequality.
The inventive method utilizes service aisle and the protection passage set up between the network element of protected field two ends to transmit working group's Switch mode, realizes simple, convenient.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1, a kind of Switch mode of protected field two ends protection group coupling method of calibration, this method comprises:
A, protected field two ends network element send APS (APS) cell of the Switch mode that carries local terminal protection group respectively to the opposite end;
B, local terminal network element are resolved after receiving the APS cell that the opposite end sends, if it is inequality with the Switch mode of local terminal protection group to judge the Switch mode of opposite end protection group, then produces alarm and indicate.
2, the method for claim 1 is characterized in that, described APS cell sends by service aisle and/or the protection passage of setting up between the network element of protected field two ends.
3, method as claimed in claim 2, it is characterized in that, the APS cell that carry K1, K2 byte of described APS cell for using in existing ITUT (I.630) standard, and in this APS cell, expand a K3 byte, the Switch mode information of using this K3 byte to carry local terminal protection group sends to the opposite end; And after receiving the APS cell that the opposite end sends, extract described K3 byte and resolve, obtain the Switch mode information of opposite end protection group.
4, method as claimed in claim 3 is characterized in that, the two ends network element sends described APS cell by setting cycle to the opposite end.
5, the method for claim 1 is characterized in that, among the described step B, the number of times inequality as if the Switch mode of the Switch mode of judging local terminal protection group continuously and opposite end protection group reaches preset threshold, then produces described alarm indication.
6, method as claimed in claim 5 is characterized in that, counter is set respectively in the network element of two ends, in order to count described number of times inequality.
7, method as claimed in claim 6 is characterized in that, if it is identical with the Switch mode of opposite end protection group to judge the Switch mode of local terminal protection group, then makes described counter O reset; Perhaps
If do not receive the APS cell that the opposite end sends in continuous a plurality of setting cycles, then make described counter O reset.
8, the method for claim 1 is characterized in that, among the described step B, if it is identical with the Switch mode of opposite end protection group to judge the Switch mode of local terminal protection group, then abandons the APS cell of reception; Otherwise, preserve the APS cell information that receives.
9, method as claimed in claim 8 is characterized in that, behind alarm clearing, and the APS cell information that deletion is preserved.
10, a kind of protection group Switch mode coupling calibration equipment is characterized in that comprising:
The cell sending module: the APS cell that sends the Switch mode that carries local terminal protection group is to the opposite end;
Cell receives parsing module: receive the APS cell that the opposite end sends, and resolve;
Comparison module: the Switch mode of the protection group of the Switch mode of the opposite end protection group that parses and local terminal setting is compared, if do not match, then output signal is to the alarm generation module;
Alarm generation module: produce alarm indication signal.
11, protection group Switch mode coupling calibration equipment as claimed in claim 10, it is characterized in that, also include a counter, be connected with described comparison module, when the Switch mode of judging two ends protection group when comparison module does not match, output signal to counter, make the count value of counter add 1; When comparison module is judged the Switch mode coupling of two ends protection group, output signal to counter, make counter O reset.
12, protection group Switch mode coupling calibration equipment as claimed in claim 11; it is characterized in that; the other end of described counter links to each other with the alarm generation module, and when the count value of counter reached preset threshold, output signal produced alarm indication signal to the alarm generation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100934125A CN100450020C (en) | 2005-08-29 | 2005-08-29 | Method and device for inverting mode match verifying of protected field both extremities protecting group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100934125A CN100450020C (en) | 2005-08-29 | 2005-08-29 | Method and device for inverting mode match verifying of protected field both extremities protecting group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1925415A true CN1925415A (en) | 2007-03-07 |
| CN100450020C CN100450020C (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100934125A Expired - Fee Related CN100450020C (en) | 2005-08-29 | 2005-08-29 | Method and device for inverting mode match verifying of protected field both extremities protecting group |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075279A (en) * | 2011-01-27 | 2011-05-25 | 杭州华三通信技术有限公司 | Configuration method and equipment for auto protocol switch (APS) working mode |
| CN103297274A (en) * | 2013-06-08 | 2013-09-11 | 华为技术有限公司 | Auto-negotiation method for automatic protection switching (APS) and receiving end device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2605601B2 (en) * | 1993-11-08 | 1997-04-30 | 日本電気株式会社 | APS channel capture circuit |
| CN1126331C (en) * | 1999-11-04 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Automatically protected switching method and device in high rate SDH loop |
| JP2003298474A (en) * | 2002-04-01 | 2003-10-17 | Furukawa Electric Co Ltd:The | Line identification method and system thereof |
| CN1499747A (en) * | 2002-11-07 | 2004-05-26 | 华为技术有限公司 | Method for implementing protection and restoration for intelligent optical network |
-
2005
- 2005-08-29 CN CNB2005100934125A patent/CN100450020C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075279A (en) * | 2011-01-27 | 2011-05-25 | 杭州华三通信技术有限公司 | Configuration method and equipment for auto protocol switch (APS) working mode |
| CN102075279B (en) * | 2011-01-27 | 2015-04-15 | 杭州华三通信技术有限公司 | Configuration method and equipment for auto protocol switch (APS) working mode |
| CN103297274A (en) * | 2013-06-08 | 2013-09-11 | 华为技术有限公司 | Auto-negotiation method for automatic protection switching (APS) and receiving end device |
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| Publication number | Publication date |
|---|---|
| CN100450020C (en) | 2009-01-07 |
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