CN1798138A - Implement method for increasing reliability of M2PA protocol - Google Patents
Implement method for increasing reliability of M2PA protocol Download PDFInfo
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- CN1798138A CN1798138A CN 200410098890 CN200410098890A CN1798138A CN 1798138 A CN1798138 A CN 1798138A CN 200410098890 CN200410098890 CN 200410098890 CN 200410098890 A CN200410098890 A CN 200410098890A CN 1798138 A CN1798138 A CN 1798138A
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Abstract
The method includes: starts up the protective timer at the terminal making the interaction of M2PA protocol message and waiting the response from the opposite end; when the protective timer is over, deletes the link between two ends occupied by the message interaction. The invention is used to avoid hanging out of the link due to no response received.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of implementation method of the M2PA of raising protocol reliability.
Background technology
The M2PA agreement is the SS7 MTP2-User Peer-to-Peer Adaptation Layer agreement, and the M2PA agreement cooperates MTP2 (two-layer message hop) protocol function that similar former arrowband net can be provided on IP network with SCTP (SCTP) agreement.Be that the M2PA agreement can provide identical with MTP2, reliable transport layer services for MTP3 (three layers of message transfer part) with Stream Control Transmission Protocol.The position of M2PA protocol stack in network as depicted in figs. 1 and 2, wherein, schematic diagram when Fig. 1 is used for the point-to-point butt joint network configuration of symmetry for M2PA; Schematic diagram when Fig. 2 is used for the IP signaling gateway for M2PA.
As can be seen, the M2PA agreement has shielded the difference of bottom transmission medium.For the MTP3 agreement, in its implementation procedure, can consider that bottom transmission is IP network, or traditional TDM (time division multiplexing) network.And, because M2PA is the adaptation layer of equity, the signaling conversion that SGW is undertaken by the MTP3 layer, so message can repeatedly be transferred at IP network.Can provide the good network fail safe at SGW aspect the fail safe of network.
During the butt joint of described M2PA agreement, comprise the handling process when receiving that at an end processor breaks down message, as shown in Figure 3, described flow process may further comprise the steps:
Step 31:M2PA Link State is " service attitude " (promptly handling " In Service " state), at this moment, if A end is received " processor stall " that upper-layer protocol issues (LPO) message, then can send the link-state message of Link Status Processor Outage (inefficacy of Link State processor) to the B end, after the B end is received, report " remote processor machine fault " (RPO) message to upper-layer protocol;
Step 32:A end receives that " the processor stall recovery " of sending is (LPR) during primitive, can send the link-state message of Link Status Processor Recovered (recovery of Link State processor) to the opposite end, after the B end is received, report " fault recovery of remote processor machine " (RPR) message to upper-layer protocol, simultaneously, execution in step 33;
Step 33:B end is to the message of A end loopback Link Status Ready (Link State is ready);
After step 34:A end is received this Link Status Ready message, also respond the B end with Link Status Ready message;
Step 35: to the treatment step of step 34, the link between A, B end just can normally transmit subscriber data message through step 32.
From above-mentioned handling process as can be seen, after A end sent Link Status Processor Recovered message, two kinds of following situations may cause link to hang and can't recover:
(1) after the B end is received the Link Status Processor Recovered message of A end, never respond Link Status Ready message, like this, the A end will be in always waits for Link StatusReady condition of information, causes link to be hung;
(2) receive the Link Status Ready message that B holds when the A end, do not respond Link StatusReady always, like this, the B end will be in always waits for Link Status Ready condition of information, causes link to be hung.
Obviously, not this can't the recovered link situation of hanging in actual networking is used, the permission to occur.Yet, at present, also do not provide a kind of processing mode of protecting to solve the problem that the link that may occur in the above-mentioned situation is hung and can't be recovered.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the implementation method that the purpose of this invention is to provide a kind of M2PA of raising protocol reliability, solve the link that when the Link State processor breaks down, may occur and hang problem, to improve the reliability of M2PA protocol application.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of implementation method of the M2PA of raising protocol reliability, comprising:
A, the M2PA protocol message is mutual carrying out, and waits for that an end of opposite end echo reply message starts the protection timer;
B, when described protection timer expiry, then remove the link that this interacting message takies between two ends.
Described steps A comprises:
A1, the protection timer is set respectively for carrying out the mutual two ends of M2PA protocol message;
A2, when an end when the opposite end sends message and waits for the response of opposite end, start the protection timer that local terminal is provided with.
Described steps A 2 comprises:
When an end is known the local processor fault recovery, send the Link State processor to the opposite end and recover message, and start the protection timer of local terminal.
Described steps A 2 comprises:
When an end receives that the Link State processor of sending the opposite end recovers message, send the ready message of Link State to the opposite end, and start the protection timer of local terminal.
Described step B also comprises:
B1, when receiving the response message that the opposite end is returned, then stop described protection timer.
Described step B1 also comprises:
When an end that sends the recovery of Link State processor is received the ready message of sending the opposite end of Link State, then stop described protection timer.
Described step B1 also comprises:
When an end that sends the recovery of Link State processor is received the ready message of sending the opposite end of Link State, also to the ready message of opposite end return link state.
Described step B1 also comprises:
When an end that sends the ready message of Link State is received the ready message of returning the opposite end of Link State, then stop described protection timer.
Described step B further comprises:
When described protection timer expiry, the link that then this interacting message between two ends is taken disconnects, and waits for that the link between two ends restarts.
As seen from the above technical solution provided by the invention, among the present invention, owing to adopted in message interaction process, the mode of timer is set for an end of wait acknowledge message, make at timer expiry, described link can be removed in the time of promptly can't receiving response message, the link circuit resource that takies is discharged.Therefore, can effectively avoid in message interaction process, owing to can't receive that the message of the response of opposite end causes link to hang the appearance of situation based on the M2PA agreement.Thereby effectively improved the reliability in the M2PA protocol application process.
Description of drawings
Fig. 1 for M2PA be applied to the symmetry point-to-point butt joint network in the protocol stack structure schematic diagram;
Fig. 2 is applied to protocol stack structure schematic diagram in the IP signaling gateway for M2PA;
Fig. 3 is the handling process schematic diagram during processor stall in the prior art;
Fig. 4 and Fig. 5 are the flow chart of method of the present invention.
Embodiment
Core of the present invention is in the process of M2PA interacting message, for the two ends of interacting message are provided with the corresponding protection timer, and starts described protection timer at an end of wait acknowledge message.Like this, if do not receive the response message that the opposite end is returned at the appointed time, then disconnect the link between two ends, and wait for restarting of link, so that the link circuit resource that takies can be used by other interacting message ends, effectively improved the reliability that realizes interacting message based on the M2PA agreement.
The specific implementation of method of the present invention comprises respectively at realizing the processing procedure at the two ends of interacting message based on the M2PA agreement as shown in Figure 4 and Figure 5, will describe respectively below.
With situation shown in Figure 3 is example, in the processing procedure of A end the method for the invention as shown in Figure 4, may further comprise the steps:
Step 41:A end is " local processor fault " (LPO) state, when knowing the local processor fault recovery, then the time point T1 place in Fig. 3 sends the link-state message of Link Status ProcessorRecovered (recovery of Link State processor) to the B end;
Step 42: when the A end sends described link-state message, start the protection timer of local terminal, and wait for the Link Status Ready message that the B end returns;
The timing length of described protection timer can be set according to factors such as link operating positions;
Step 43: whether the described protection timer of real-time judge is overtime, if overtime, then execution in step 46, otherwise, execution in step 44:
Step 44: judge further whether the A end receives the opposite end, promptly whether receives the LinkStatus Ready message that the B end is sent, if receive, then execution in step 45, otherwise, execution in step 43;
Step 45: before described protection timer expiry, receive Link Status Ready message, then stop to protect timer, and send Link Status Ready message to the B end; Afterwards, if there are not other faults, then link can provide the user data transmission service.
Step 46: the protection timer expiry, then hold the link chain rupture between A end and B end, and wait for restarting of this link at A.
Above-mentioned steps 41 can effectively avoid the A among Fig. 3 to hold because do not receive that Link Status Ready message causes corresponding link to be hung to the processing procedure of step 46.
Be example still, in the processing procedure of B end the method for the invention as shown in Figure 5, specifically may further comprise the steps with situation shown in Figure 3:
Step 51:B end is " remote processor machine fault " (RPO) state, and when the Link Status Processor Recovered link-state message of receiving that the A end is sent, then to the opposite end, promptly the A end returns LinkStatus Ready message;
Step 52: when the B end sends described Link Status Ready message, the protection timer that startup B end is provided with, and wait for that receiving A holds the Link Status Ready message of returning;
The timing length of described protection timer can be set according to factors such as link operating positions equally;
Step 53: whether the described protection timer of real-time judge is overtime, if overtime, then execution in step 56, otherwise, execution in step 54:
Step 54: judge further whether the B end receives the opposite end, promptly whether receives the LinkStatus Ready message that the A end is sent, if receive, then execution in step 55, otherwise, execution in step 53;
Step 55: receive the Link Status Ready message that the A end is sent before described protection timer expiry, then stop described protection timer, afterwards, if there are not other faults, then link can provide the user data transmission service.
Step 56: the protection timer expiry, then hold the link chain rupture between A end and B end, and wait for restarting of this link at B.
Above-mentioned steps 51 can effectively avoid the B among Fig. 3 to hold because do not receive that Link Status Ready message causes corresponding link to be hung to the processing procedure of step 56.
In sum, utilize the present invention, can guarantee that the side a and b among Fig. 3 all can not receiveed the response owing to receiving, promptly Link Status Ready message causes link to be hung and can't recover, and has realized purpose of the present invention.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (9)
1, a kind of implementation method that improves the M2PA protocol reliability is characterized in that, comprising:
A, the M2PA protocol message is mutual carrying out, and waits for that an end of opposite end echo reply message starts the protection timer;
B, when described protection timer expiry, then remove the link that this interacting message takies between two ends.
2, the implementation method of raising M2PA protocol reliability according to claim 1 is characterized in that described steps A comprises:
A1, the protection timer is set respectively for carrying out the mutual two ends of M2PA protocol message;
A2, when an end when the opposite end sends message and waits for the response of opposite end, start the protection timer that local terminal is provided with.
3, the implementation method of raising M2PA protocol reliability according to claim 2 is characterized in that described steps A 2 comprises:
When an end is known the local processor fault recovery, send the Link State processor to the opposite end and recover message, and start the protection timer of local terminal.
4, the implementation method of raising M2PA protocol reliability according to claim 2 is characterized in that described steps A 2 comprises:
When an end receives that the Link State processor of sending the opposite end recovers message, send the ready message of Link State to the opposite end, and start the protection timer of local terminal.
5, according to the implementation method of claim 1,2,3 or 4 described raising M2PA protocol reliability, it is characterized in that described step B also comprises:
B1, when receiving the response message that the opposite end is returned, then stop described protection timer.
6, the implementation method of raising M2PA protocol reliability according to claim 5 is characterized in that described step B1 also comprises:
When an end that sends the recovery of Link State processor is received the ready message of sending the opposite end of Link State, then stop described protection timer.
7, the implementation method of raising M2PA protocol reliability according to claim 6 is characterized in that described step B1 also comprises:
When an end that sends the recovery of Link State processor is received the ready message of sending the opposite end of Link State, also to the ready message of opposite end return link state.
8, the implementation method of raising M2PA protocol reliability according to claim 7 is characterized in that described step B1 also comprises:
When an end that sends the ready message of Link State is received the ready message of returning the opposite end of Link State, then stop described protection timer.
9, according to the implementation method of claim 1,2,3 or 4 described raising M2PA protocol reliability, it is characterized in that described step B further comprises:
When described protection timer expiry, the link that then this interacting message between two ends is taken disconnects, and waits for that the link between two ends restarts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410098890 CN1798138A (en) | 2004-12-20 | 2004-12-20 | Implement method for increasing reliability of M2PA protocol |
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| CN 200410098890 CN1798138A (en) | 2004-12-20 | 2004-12-20 | Implement method for increasing reliability of M2PA protocol |
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| CN1798138A true CN1798138A (en) | 2006-07-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008031290A1 (en) * | 2006-09-08 | 2008-03-20 | Zte Corporation | A method for deleting quickly the m2pa failure link |
| CN101127763B (en) * | 2006-09-07 | 2011-06-22 | 中兴通讯股份有限公司 | A method for recovery synchronization of transmission signaling L2 peer adaptation layer SN |
| CN102457406A (en) * | 2010-10-27 | 2012-05-16 | 深圳市金蝶友商电子商务服务有限公司 | Method for detecting abnormal disconnection of client side in Internet communication application and server |
-
2004
- 2004-12-20 CN CN 200410098890 patent/CN1798138A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127763B (en) * | 2006-09-07 | 2011-06-22 | 中兴通讯股份有限公司 | A method for recovery synchronization of transmission signaling L2 peer adaptation layer SN |
| WO2008031290A1 (en) * | 2006-09-08 | 2008-03-20 | Zte Corporation | A method for deleting quickly the m2pa failure link |
| CN102457406A (en) * | 2010-10-27 | 2012-05-16 | 深圳市金蝶友商电子商务服务有限公司 | Method for detecting abnormal disconnection of client side in Internet communication application and server |
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Open date: 20060705 |