CN100344132C - Method for assuring automatic protecting system regular service of Ethernet - Google Patents
Method for assuring automatic protecting system regular service of Ethernet Download PDFInfo
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- CN100344132C CN100344132C CNB2005101129538A CN200510112953A CN100344132C CN 100344132 C CN100344132 C CN 100344132C CN B2005101129538 A CNB2005101129538 A CN B2005101129538A CN 200510112953 A CN200510112953 A CN 200510112953A CN 100344132 C CN100344132 C CN 100344132C
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Abstract
The present invention discloses a method guaranteeing the normal work of a ring of an Ethernet automatic protective system (EAPS), which comprises that a spare site is arranged in an assistant site on a ring of an EAPS. When the change of the working state of a main site is judged by the spare site, the spare site notifies other sites on the ring of an EAPS to refresh an address list of media access control (MAC). The spare site and other sites refresh the address list of MAC, and transmission is executed according to the refreshed address list of MAC. After the working state of the main site is changed, the present invention can guarantee that the spare site notifies each site of the ring of an EAPS to refresh the address list of MAC according to the communicating condition of a current actual site. Thus, each site executes the transmission based on the correct MAC address in a subsequent transmission process. Thus, the normal work of the ring of an EAPS is guaranteed.
Description
Technical field
The present invention relates to Ethernet automatic protective system (EAPS) technology, guarantee the method for EAPS ring operate as normal after particularly relating to a kind of operating state and changing when home site.
Background technology
The EAPS ring is by a home site and a plurality of loop network structure of forming from website.Transmission has business datum and a control messages in EAPS ring.Under initial normal condition, for business datum, the spare physical port of home site obstruction self side, guarantee when service data transmission, the EAPS ring is a chain, rather than a ring-type, thereby avoids unknown unicast and the broadcast (sites) in turn of broadcasting under loop network to take place; For control messages, home site need not to block the spare physical port of self side, that is to say that when transmitting control message the EAPS ring is a ring-type, thereby make home site after the transmission of EAPS ring, can receive from the opposite side physical port from the control messages that a side physical port sends.
At present, in order to guarantee EAPS ring operate as normal, EAPS ring fault handling method and EAPS ring fault recovery processing method have been proposed.Fig. 1 is the structural representation of EAPS ring.Referring to Fig. 1; at on the EAPS ring from website or link occurs fault; the EAPS ring fault handling method that is provided at present comprises: when home site or slave station point detect on the EAPS ring after website or link occurs fault; trigger the EAPS ring protection by home site and switch processing procedure; just; at first; home site is opened the spare physical port that self blocks; so that each website on the EAPS ring is communicated with; then; home site notifies each to refresh medium access control (MAC) address table from website; respectively after receiving notice, refresh mac address table, promptly remove employed mac address table under front port under initial normal condition, and relearn and set up a mac address table from website; when the subsequent transmission business datum, each website is finished transmission according to the mac address table of being set up.
Referring to Fig. 1, when on the EAPS ring after the fault recovery of website or link, the EAPS ring fault recovery processing method that is provided at present comprises: after home site or slave station point detect fault that slave station point or link take place and recovered, trigger the loop circuit state handoff procedure by home site, just, at first, home site sends fault recovery message to each from website, and each carries out the time point that switches from website by this fault recovery message informing; When arriving the time point of carrying out switching, home site blocks the spare physical port of self, and, home site and refresh mac address table from website, promptly remove employed mac address table under front port under interim state, and relearn and set up a mac address table, when the subsequent transmission business datum, each website is finished transmission according to the mac address table of being set up.
By above description as can be seen, the method of the assurance EAPS ring operate as normal that is proposed at present is at the processing method from website and link occurs fault and fault recovery except that home site on the EAPS ring, and the processing method that does not change at the operating state of home site, that is to say, do not break down at home site, being operating state becomes processing method behind the fault case from normal state, also not at the home site fault recovery, being operating state becomes processing method after the normal state from fault case, like this, after the operating state of home site changes, home site can't notify each to refresh mac address table from website, each also just can't refresh mac address table according to the real site connection situation of EAPS ring from website, thereby can't guarantee the transmission of follow-up business data, can't guarantee the operate as normal of EAPS ring.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of the EAPS of assurance ring operate as normal, to guarantee that the EAPS ring can operate as normal after the operating state of home site changes.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method that guarantees EAPS ring operate as normal is provided with backup site from website on the EAPS ring, this method also comprises:
A, backup site judge whether the operating state of home site becomes fault case or become normal state from fault case from normal state, if, execution in step B then;
Other each website refreshes the media access control MAC address table on B, the backup site notice EAPS ring;
C, backup site and described other website refresh mac address table, and carry out transmission according to the mac address table after refreshing.
The described step that backup site is set comprises: be set to backup site apart from nearest one of home site from website on the EAPS ring, or according on the EAPS ring respectively from numbering of number order of website maximum or minimum be set to backup site from website.
The described step that backup site is set comprises: be set to backup site with at least two on the EAPS ring respectively from website;
Before steps A, this method further comprises: the backup site of specifying an operate as normal in set backup site;
Described judgement and notice are to be carried out by specified backup site.
In steps A, the operating state of judging home site when backup site whether when normal state becomes fault case,
Described step B comprises: the physical port of backup site by self both sides send respectively carry some switching time the home site fault notification message to described other each website;
In step C, the described step that refreshes mac address table comprises: backup site and described other each website arrive the mac address table of removing respectively when putting switching time under the EAPS ring upper port that home site just often uses in timing, learn and set up a mac address table according to the actual connection situation of website on the current EAPS ring;
In step C, the mac address table behind described the refreshing is the current mac address table of setting up.
This method further comprises: in advance access control list (ACL) regulations is kept in the set backup site, wherein, defines the feature of HELLO detect-message in the described access control list (ACL) regulations;
In steps A, described judgement comprises: backup site is according to the feature of the HELLO detect-message of access control list (ACL) regulations definition, whether judgement does not receive the HELLO detect-message that home site sends in predefined time span, if think that then the operating state of home site becomes fault case from normal state.
Before steps A, this method further comprises: when home site was in normal state and need to send the HELLO detect-message, home site physical port by self both sides on the EAPS ring sent the HELLO detect-message respectively;
In steps A, described judgement comprises: backup site is judged in predefined time span the HELLO detect-message that whether does not all receive home site from the physical port of self any side and sent, if think that then the operating state of home site becomes fault case from normal state.
In steps A, the operating state of judging home site when backup site whether when fault case becomes normal state,
Described step B comprises: backup site is carried the home site fault recovery message of some switching time to described other each website by the physical port transmission of self one or both sides;
In step C, the described step that refreshes mac address table comprises: backup site and described other each website arrive mac address table under the EAPS ring upper port of using when removing in the home site fault respectively when putting switching time in timing, and learn and set up a mac address table according to the actual connection situation of website on the current EAPS ring;
In step C, the mac address table behind described the refreshing is the current mac address table of setting up.
In steps A, described judgement comprises: backup site judges whether to receive the fault recovery message that home site is sent, if think that then the operating state of home site becomes normal state from fault case.
This method further comprises: after home site broke down, backup site sent the HELLO detect-message whenever arriving predefined transmission during the cycle;
In steps A, described judgement comprises: backup site judges whether receive the HELLO detect-message that self sends in predefined time span, if think that then the operating state of home site becomes normal state from fault case.
The step that described backup site sends the HELLO detect-message comprises: backup site whenever arrive predefined transmission during the cycle physical port by self both sides send the HELLO detect-message respectively;
In steps A, described judgement comprises: backup site judges in predefined time span on the physical port of self any side whether receive the HELLO detect-message that self sends, if think that then the operating state of home site becomes normal state from fault case.
This shows, in the present invention, backup site can in time be found the variation of home site operating state, the back operating state that promptly breaks down becomes fault case from normal state, or operating state becomes normal state from fault case after the fault recovery, and, after the variation of finding the home site operating state, backup site can in time notify each website on the EAPS ring to refresh mac address table according to current real site connection situation, thereby make that each website is carried out transmission according to correct mac address table in the subsequent transmission process, thereby guaranteed the operate as normal of EAPS ring.
Description of drawings
Fig. 1 is the structural representation of EAPS ring.
Fig. 2 is the flow chart that guarantees EAPS ring operate as normal in embodiments of the present invention after the operating state of home site becomes fault case from normal state.
Fig. 3 is the flow chart that guarantees EAPS ring operate as normal in embodiments of the present invention after the operating state of home site becomes normal state from fault case.
Embodiment
According to the operation principle of EAPS ring as can be known, guarantee that the key factor of EAPS ring operate as normal comprises: each website on the EAPS ring must be communicated with, and each website must be carried out transmission by the correct mac address table of foundation.Under initial normal condition, the spare physical port of home site one side blocks, like this, no matter whether home site breaks down, each all is communicated with from website, this shows, when the operating state of home site change be home site break down or fault recovery after, the key factor that guarantees EAPS ring operate as normal is exactly to make that each in time refreshes mac address table according to the real site connection situation that EAPS encircles from website on the EAPS ring, thereby can carry out the subsequent transmission process according to correct mac address table.
At These characteristics, the present invention proposes the method for a kind of EAPS of assurance ring operate as normal, its core concept is: at the EAPS ring backup site is set from website; Backup site judges whether the operating state of home site changes, if then other each website refreshes mac address table on the backup site notice EAPS ring; Backup site and described other website refresh mac address table, and carry out transmission according to the mac address table after refreshing.
Wherein, described home site operating state changes and comprises: home site breaks down, and operating state becomes fault case from normal state, perhaps, the fault recovery of home site, its operating state becomes normal state from fault case.
In addition, whether the backup site operating state of judging home site from the method that normal state becomes fault case can be: backup site judges whether to receive the HELLO detect-message that home site is sent.Whether the operating state that backup site is judged home site from the method that fault case becomes normal state can be: backup site judges whether to receive the fault recovery message that home site is sent, and perhaps backup site judges whether the HELLO detect-message that sends from self side physical port is sent to the opposite side physical port of self.
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Fig. 2 is the flow chart that guarantees EAPS ring operate as normal in embodiments of the present invention after the operating state of home site becomes fault case from normal state.Referring to Fig. 2, after home site broke down, and operating state becomes fault case from normal state, the present invention guaranteed that the process of EAPS ring operate as normal specifically may further comprise the steps:
Step 201: at EAPS ring backup site is set from website in advance.
Here, can backup site be set according to a specific rule from website.Such as, will be nearest apart from home site, one that just directly links to each other with home site on the EAPS ring is set to backup site from website, perhaps, respectively number minimum or maximum one from the number order of website according to EAPS ring and is set to backup site etc. from website.
Step 202: in set backup site, timing device is set in advance.
Here, set timing device can be any equipment with clocking capability such as timer or counter.
Step 203: in advance the access control list (ACL) rule is kept in the set backup site.
Here, because in the prior art, each can only transmit the HELLO detect-message of home site from website, do not possess the function of this HELLO detect-message of identification, and defined the feature of HELLO detect-message in the acl rule, therefore, in this step 203, in backup site, preserve acl rule, make backup site in subsequent process, can identify the HELLO detect-message that home site is sent, thereby make the judgement whether home site breaks down by acl rule.
Step 204: when the EAPS ring was started working, backup site started the timing device that is provided with in advance in self.
Here, it can be that backup site makes counter as timing device since 0 counting that described backup site starts timing device, and perhaps, backup site makes the timer as timing device pick up counting from 0.
Step 205: when the EAPS ring was started working, when home site was in normal state, home site sent the HELLO detect-message on the EAPS ring; When home site break down become fault case from normal state after, home site stops to send the HELLO detect-message.
Here, if on the EAPS ring from website and link occurs fault, the HELLO detect-message that home site sent so is possibly because the fault that taken place and can't be sent to backup site.Such as, referring to Fig. 1, home site does not break down, be in normal state, be set to backup site from website 1, and from website 2 with from the link occurs fault between the website 3, if home site is only by self side physical port transmission HELLO detect-message, after then receiving this HELLO detect-message from website 3, because from website 2 with from the link occurs fault between the website 3, then this HELLO detect-message can't be sent to from website 2 from website 3, also just can't make this HELLO detect-message be sent to as backup site from website 1.Therefore, preferably, in this step 205, be in the home site of normal state can be on both direction promptly the physical port by self both sides send the HELLO detect-message respectively, thereby guarantee that under the situation that home site self does not break down backup site can receive the HELLO detect-message that home site sends.
In addition, on the EAPS ring, each transmits this HELLO detect-message respectively until backup site after website receives the HELLO detect-message.
Need to prove, above-mentioned steps 204 and step 205 just for convenience of description and two steps of dividing in the business realizing of reality, there is no the sequencing in the execution between step 204 and the step 205, its process is carried out simultaneously.
Step 206: backup site judges whether received the HELLO detect-message that home site is sent before the timing device timing arrives predefined time span, if then execution in step 207, otherwise execution in step 208.
Here, described predefined time span can be to transmit the required time span of one or more HELLO detect-message on the EAPS ring.
In addition, described backup site does not receive HELLO detect-message that home site sends and is meant that backup site is not promptly all receiving the HELLO detect-message that home site is sent on the physical port in self both sides on the both direction.
Need to prove, in this step 206, when backup site receives the HELLO detect-message that home site sends, backup site is to determine that according to the acl rule that is kept in self in advance received message is the HELLO detect-message, its specific implementation process is: when backup site receives a control messages, whether the feature of judging this control messages is identical with the feature of the defined HELLO detect-message of acl rule, if then determine to have received the HELLO detect-message.
Here, the specific implementation process of described judgement can be: backup site judges whether counter institute count value time corresponding length receives the HELLO detect-message that home site is sent before arriving predefined time span, perhaps, backup site judges whether time span that timer is counted receives the HELLO detect-message that home site is sent before arriving predefined time span.
Step 207: backup site restarts timing device, and carries out the existing EAPS ring course of work, finishes current flow process.
Step 208: backup site promptly sends the home site fault notification message of carrying some switching time respectively by the physical port of self both sides on both direction.
Carry out here, because home site breaks down, can't carry out transmission, therefore, can be sent on the EAPS ring each from website in order to ensure the home site fault notification message that backup site sent, in this step 208, backup site is to send the home site fault notification message on both direction respectively.
In addition, the home site fault notification message of carrying some switching time that backup site sent can be generated and sent in this step in real time by backup site, also can be pre-configured in the backup site and by backup site directly to send in this step.
On the step 209:EAPS ring other transmits the received home site fault notification message of carrying some switching time respectively from website, and preserves some switching time that carries in the home site fault notification message respectively.
Here, on the EAPS ring other carried out transmission respectively from website after receiving the home site fault notification message of carrying switching time point, thereby the home site fault notification message of guaranteeing to carry some switching time can be sent on the EAPS ring each from website.
Step 210: other website on backup site and the EAPS ring arrives when putting switching time in timing, refreshes mac address table.
Here, the described mac address table that refreshes comprises: remove the mac address table under the EAPS ring upper port of former use, and according to the real site connection situation on current EAPS ring study with set up a mac address table, this study and the process of setting up mac address table are prior art, no longer describe herein.But it should be noted that,, therefore, no longer comprise the home site that breaks down in the current mac address table of setting up because home site breaks down and is not communicated with other website.
Step 211: other website on backup site and the EAPS ring is that the current mac address table of setting up is carried out transmission course according to the mac address table after refreshing.
Here, because the mac address table of being set up in step 210 no longer comprises the home site that breaks down, therefore, then can be when carrying out transmission in this step through the home site that breaks down, that is to say, backup site and other website are to be communicated with the pairing mac address table of situation according to website on the current EAPS ring to transmit, thereby have guaranteed the reliability of transmission course, have guaranteed the operate as normal of EAPS ring.
In above-mentioned steps 210 and step 211,, therefore, no longer comprise home site in other each website on the described EAPS ring because home site breaks down.
For be implemented on the EAPS ring from website and link occurs fault and fault recovery the time guarantee EAPS ring operate as normal, when the fault recovery of home site, must make the EAPS ring return to initial normal condition, just recover the function of home site, and refresh mac address table.Therefore, comprise when the home site fault recovery in the method for assurance EAPS proposed by the invention ring operate as normal that promptly operating state guarantees that EAPS encircles the process of operate as normal when fault case becomes normal state.Referring to Fig. 3, this process specifically may further comprise the steps:
Step 301～step 302 is all identical with all descriptions of step 201～step 202.
Step 303: after home site broke down, whenever arriving predefined transmission during the cycle, backup site sent the HELLO detect-message on the EAPS ring, and starts the timing device that sets in advance.
Here, described backup site startup timing device is meant that backup site makes this timing device pick up counting from 0.
Can receive the HELLO detect-message in order to ensure home site after fault recovery, preferably, in this step, backup site can promptly send described HELLO detect-message respectively by the physical port of self both sides on both direction.
Need to prove that the HELLO detect-message that backup site sent can be generated and sent in this step in real time by backup site, also can be pre-configured in the backup site and directly send in this step by backup site.
In addition, on the EAPS ring, each transmits this HELLO detect-message that receives after website has received the HELLO detect-message, thereby makes home site can receive this HELLO detect-message.
Step 304: the home site fault recovery is that operating state becomes normal state from fault case, and home site is sent to backup site with this HELLO detect-message after receiving the HELLO detect-message.
Here, need to prove, in this step 304, the home site fault recovery is after operating state becomes normal state from fault case, home site does not block the spare physical port of self side, and other website on the EAPS ring does not send and recovers switching messages, to guarantee unifying the process that each website of triggering following switches to initial normal condition by backup site.
Step 305: backup site judges whether received the HELLO detect-message that self sends before the timing device timing arrives predefined time span, if then execution in step 306, otherwise, finish current flow process.
Here, described predefined time span can be to transmit the required time span of one or more HELLO detect-message on the EAPS ring.
In addition, described backup site receives HELLO detect-message that home site sends and is meant that backup site is promptly receiving the HELLO detect-message that self sends on the physical port in self any side on any one direction.
The specific implementation process of judging described in this step 305 can be: backup site judges whether counter institute count value time corresponding length receives the HELLO detect-message that self sends before arriving predefined time span, perhaps, backup site judges whether time span that timer is counted receives the HELLO detect-message that self sends before arriving predefined time span.
Need to prove that what above-mentioned steps 302 to step 305 was described is the process of whether being recovered by backup site active detecting home site fault.In the present invention, the also advisory backup site that can initiatively faults itself be recovered when the fault recovery by home site, thereby triggering following is changed to the EAPS ring cutting process of initial normal condition more in time, its specific implementation process is: home site fault recovery operating state is when fault case becomes normal state, home site sends fault recovery message respectively by the physical port of self both sides, respectively transmit this fault recovery message to backup site from website, after backup site receives fault recovery message, know the home site fault recovery, operating state becomes normal state from fault case, then think and should carry out the process that follow-up triggering EAPS ring cutting is changed to initial normal condition, promptly execution in step 306.
Step 306: the home site fault recovery message that backup site will be carried some switching time is sent to other each website.
Here, backup site can send described home site fault recovery message of carrying some switching time by the physical port of self side.Preferably, backup site can also send described home site fault recovery message of carrying some switching time by the physical port of self both sides, thereby guarantees that this home site fault recovery message of carrying some switching time can be sent to other all websites on the EAPS ring.
In addition, described other each website comprises that home site and other are from website.
Step 307: arrive when putting switching time in timing, home site blocks the spare physical port of self, and other each website on backup site and the EAPS ring refreshes mac address table.
Here, the described mac address table that refreshes comprises: remove employed mac address table when the home site fault, and learn and set up a mac address table according to the real site connection situation on the current EAPS ring.This study and the process of setting up mac address table are prior art, no longer describe herein, but it should be noted that, because the home site fault recovery is communicated with other website, therefore, comprise the home site of fault recovery in the current mac address table of setting up.
Step 308: each website of other on backup site and the EAPS ring is that the current mac address table of setting up is carried out transmission course according to the mac address table after refreshing.
In above-mentioned steps 307 and step 308,, therefore, include home site in other each website on the described EAPS ring because home site has recovered fault.
So far, then realized after home site fault recovery operating state becomes normal state from fault case, each website is communicated with the pairing mac address table of situation according to the website on the current EAPS ring and carries out transmission, has guaranteed the reliability of transmission course, thereby has guaranteed the operate as normal of EAPS ring.
Need to prove, because backup site also may break down, thereby can't detect the fault of home site and fault recovery and can't trigger and refresh mac address table, therefore, in order to ensure realization of the present invention, in above-mentioned Fig. 2 and process of the present invention shown in Figure 3, can be set to backup site respectively from website with a plurality of, that is to say, set backup site can be a plurality of, when the work of EAPS ring, backup site by the operate as normal of an appointment in each backup site, such as the backup site of a maximum or minimum operate as normal of the backup site of a nearest operate as normal of distance home site or numbering, carry out and detect home site fault or fault recovery, and trigger the process that refreshes mac address table of carrying out.That is to say, in the step 201 of above-mentioned process shown in Figure 2 related backup site to each step of step 203 all can be a plurality of backup site, step 204 detect to the step 208 home site whether fault and triggering carry out and refresh the related backup site of mac address table process and then be the backup site of a specified operate as normal; Above-mentioned process shown in Figure 3 301 to the step 302 related backup site can be a plurality of backup site, detect home site to the step 306 in step 303 and whether recover fault and trigger to carry out and refresh backup site related in the mac address table process and then be the backup site of a specified operate as normal.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of method that guarantees Ethernet automatic protective system EAPS ring operate as normal is characterized in that, on the EAPS ring backup site is set from website, and this method also comprises:
A, backup site judge whether the operating state of home site becomes fault case or become normal state from fault case from normal state, if, execution in step B then;
Other each website refreshes the media access control MAC address table on B, the backup site notice EAPS ring;
C, backup site and described other website refresh mac address table, and carry out transmission according to the mac address table after refreshing.
2, method according to claim 1, it is characterized in that, the described step that backup site is set comprises: be set to backup site apart from nearest one of home site from website on the EAPS ring, or according on the EAPS ring respectively from numbering of number order of website maximum or minimum be set to backup site from website.
3, method according to claim 1 is characterized in that, the described step that backup site is set comprises: be set to backup site with at least two on the EAPS ring respectively from website;
Before steps A, this method further comprises: the backup site of specifying an operate as normal in set backup site;
Described judgement and notice are to be carried out by specified backup site.
4, method according to claim 1 is characterized in that, in steps A, the operating state of judging home site when backup site whether when normal state becomes fault case,
Described step B comprises: the physical port of backup site by self both sides send respectively carry some switching time the home site fault notification message to described other each website;
In step C, the described step that refreshes mac address table comprises: backup site and described other each website arrive the mac address table of removing respectively when putting switching time under the EAPS ring upper port that home site just often uses in timing, learn and set up a mac address table according to the actual connection situation of website on the current EAPS ring;
In step C, the mac address table behind described the refreshing is the current mac address table of setting up.
5, method according to claim 4 is characterized in that, this method further comprises: in advance access control list (ACL) regulations is kept in the set backup site, wherein, defines the feature of HELLO detect-message in the described access control list (ACL) regulations;
In steps A, described judgement comprises: backup site is according to the feature of the HELLO detect-message of access control list (ACL) regulations definition, whether judgement does not receive the HELLO detect-message that home site sends in predefined time span, if think that then the operating state of home site becomes fault case from normal state.
6, according to claim 4 or 5 described methods, it is characterized in that, before steps A, this method further comprises: when home site was in normal state and need to send the HELLO detect-message, home site physical port by self both sides on the EAPS ring sent the HELLO detect-message respectively;
In steps A, described judgement comprises: backup site is judged in predefined time span the HELLO detect-message that whether does not all receive home site from the physical port of self any side and sent, if think that then the operating state of home site becomes fault case from normal state.
7, according to any described method in the claim 1 to 3, it is characterized in that, in steps A, the operating state of judging home site when backup site whether when fault case becomes normal state,
Described step B comprises: backup site is carried the home site fault recovery message of some switching time to described other each website by the physical port transmission of self one or both sides;
In step C, the described step that refreshes mac address table comprises: backup site and described other each website arrive mac address table under the EAPS ring upper port of using when removing in the home site fault respectively when putting switching time in timing, and learn and set up a mac address table according to the actual connection situation of website on the current EAPS ring;
In step C, the mac address table behind described the refreshing is the current mac address table of setting up.
8, method according to claim 7 is characterized in that, in steps A, described judgement comprises: backup site judges whether to receive the fault recovery message that home site is sent, if think that then the operating state of home site becomes normal state from fault case.
9, method according to claim 7 is characterized in that, this method further comprises: after home site broke down, backup site sent the HELLO detect-message whenever arriving predefined transmission during the cycle;
In steps A, described judgement comprises: backup site judges whether receive the HELLO detect-message that self sends in predefined time span, if think that then the operating state of home site becomes normal state from fault case.
10, method according to claim 9, it is characterized in that the step that described backup site sends the HELLO detect-message comprises: backup site whenever arrive predefined transmission during the cycle physical port by self both sides send the HELLO detect-message respectively;
In steps A, described judgement comprises: backup site judges in predefined time span on the physical port of self any side whether receive the HELLO detect-message that self sends, if think that then the operating state of home site becomes normal state from fault case.
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| CNB2005101129538A CN100344132C (en) | 2005-10-14 | 2005-10-14 | Method for assuring automatic protecting system regular service of Ethernet |
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| CNB2005101129538A CN100344132C (en) | 2005-10-14 | 2005-10-14 | Method for assuring automatic protecting system regular service of Ethernet |
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|---|---|---|---|---|
| CN100394740C (en) * | 2006-05-08 | 2008-06-11 | 杭州华三通信技术有限公司 | Method for transmitting control message and a station apparatus |
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