CN102045600A - Link protection method and device of Ethernet accessed to SDH (Synchronous Digital Hierarchy) optical network - Google Patents
Link protection method and device of Ethernet accessed to SDH (Synchronous Digital Hierarchy) optical network Download PDFInfo
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Abstract
The invention discloses a link protection method and device of an Ethernet accessed to an SDH (Synchronous Digital Hierarchy) optical network, which are used for solving the problem of poor reliability after the traditional Ethernet is accessed to the SDH optical network. The main technical scheme mainly comprises the following step of configuring a first link and a second link, wherein the first link and the second link are in main and standby relationship. The protection method comprises the following steps of: acquiring the link status information of the first link and the second link; and determining a link loading the current business and controlling the transmission of the current business on the link according to the acquisition result and the preset corresponding relationship between the acquisition result and the link loading the current business. The transmission of the current business can be timely controlled according to the link status information of the first link and the second link in main and standby relationship through the technical scheme, and the reliability of the Ethernet accessed to the SDH optical network is increased.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to link protection method and device that a kind of Ethernet inserts the SDH optical-fiber network.
Background technology
Network survivability just is meant that network still can keep the ability of acceptable quality of service grade during standing network failure and equipment failure.An important technology index that characterizes the network survivability performance is for protecting recovery time, and protection refers to that network is to recover to lose efficacy or the required consumed time of interrupting service recovery time.
Different business is different fully to the requirement of recovery time.Under the general situation, the ATM of large-scale financial institution and bank is the highest to requirement recovery time of business, generally requires less than 50ms; Common communication service is higher to the suffertibility of service outage duration, but generally also is no more than 30 minutes.These business are after process switch or router processing, transmit through optical-fiber network.Generally speaking, when transmission network break period was between 50～200ms, the connection losing probability of the reciprocal exchange of business did not have influence less than 5% substantially for No.7 nation-wide Network and cell relay service.When transmission network increased between 200ms～2s break period, reciprocal exchange of business losing probability began progressively to rise, surpass 2s after, most circuit switching connection, special line, dial business all will be lost.And when transmission network arrives 10s break period, all communication sessions all will be lost connection.And if surpass transmission network break period after 5 minutes, will cause longer time irrecoverable of the serious obstruction of switch and upper-layer service.Therefore, protection is few more recovery time, and network performance is good more.
At present; it is an importance of network development that Ethernet inserts SDH (Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)) optical-fiber network, and the SDH optical-fiber network has comparatively strict requirement for reliability; protection is long more recovery time, and then reliability is poor more.At present; the protection mechanism that Ethernet adopted generally all has long protection recovery time, therefore, and for a long time; the one of the main reasons that the restriction Ethernet uses on the SDH optical-fiber network is exactly the poor reliability of Ethernet, can not satisfy the strict demand of SDH optical-fiber network for reliability.
Summary of the invention
In view of this, link protection method and device that the embodiment of the invention provides a kind of Ethernet to insert the SDH optical-fiber network are used to solve the problem that existing Ethernet inserts poor reliability behind the SDH optical-fiber network.
The embodiment of the invention is achieved through the following technical solutions:
According to an aspect of the embodiment of the invention, provide a kind of Ethernet to insert the link protection method of SDH optical-fiber network.
The Ethernet that provides according to the embodiment of the invention inserts the link protection method of SDH optical-fiber network, disposes first link and second link, and described first link and described second link be main and standby relation each other; Described guard method comprises:
Obtain the link-state information of described first link and described second link;
According to obtaining result and the default corresponding relation that obtains result and the link of carrying current business, determine the link of carrying current business and control current business on the described link of determining, to transmit.
According to another aspect of the embodiment of the invention, also provide a kind of Ethernet to insert the link protection device of SDH optical-fiber network.
The Ethernet that provides according to the embodiment of the invention inserts the link protection device of SDH optical-fiber network, comprising:
The link configuration unit is used to dispose first link and second link, and described first link and described second link be main and standby relation each other;
Control unit, be used to obtain the link-state information of first link and second link of described link configuration configuration of cells, according to obtaining result and the default corresponding relation that obtains result and the link of carrying current business, determine the link of carrying current business and control current business on the described link of determining, to transmit.
Above-mentioned at least one technical scheme that provides by the embodiment of the invention, dispose first link and second link of main and standby relation each other, obtain the link-state information of this first link and second link, according to obtaining result and the default corresponding relation that obtains result and the link of carrying current business, determine the link of carrying current business and control current business on the link of determining, to transmit, thereby can be in time according to first link of main and standby relation and the link-state information of second link each other, the transmission of control current business has improved the reliability after Ethernet inserts the SDH optical-fiber network.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with the embodiment of the invention one, is not construed as limiting the invention.In the accompanying drawings:
The link configuration schematic diagram that Fig. 1 provides for the embodiment of the invention;
The link configuration structure chart that Fig. 2 provides for the embodiment of the invention;
The Ethernet that Fig. 3 provides for the embodiment of the invention inserts the link protection method flow chart of SDH optical-fiber network;
The Ethernet that Fig. 4 provides for the embodiment of the invention inserts the link protection device schematic diagram of SDH optical-fiber network.
Embodiment
Improve the implementation that Ethernet inserts the reliability behind the SDH optical-fiber network in order to provide; the embodiment of the invention provides a kind of Ethernet to insert the link protection method and the device of SDH optical-fiber network; below in conjunction with Figure of description the preferred embodiments of the present invention are described; be to be understood that; preferred embodiment described herein only is used for description and interpretation the present invention, and is not used in qualification the present invention.And under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
According to the embodiment of the invention, at first need to dispose two links, as shown in Figure 1, dispose two links of main and standby relation each other between Ethernet and the SDH optical-fiber network, first link and second link main and standby relation each other among Fig. 1, and first link is primary link, and second link is a standby link, in the practical application, can according to circumstances specify any link in first link and second link is primary link.
In the embodiment of the invention, generally cooperate with cross board and finish link configuration, specifically as shown in Figure 2 by database, Ethernet links to each other with database 1 and database 2 respectively by the Ethernet service interface plate, wherein, database 1 corresponding first link, database 2 corresponding second links; Database 1 and database 2 are connected to cross board respectively, this cross board is according to the link-state information control data plate 1 of database 1 and database 2 and the operating state of database 2, cross board is connected to the SDH optical-fiber network by tabula rasa or database 3, according to this annexation, two corresponding links are:
First link: database 1-＞cross board-＞tabula rasa or database 3;
Second link: database 2-＞cross board-＞tabula rasa or database 3.
According to Fig. 2, Ethernet links to each other with database 2 with database 1 respectively by two ports on the Ethernet service interface plate, and each forms a service link.These two links all move LACP (Link AggregationControl Protocol, Link Aggregation Control Protocol), system port (VCG port) by two blocks of data plates is connected to same cross board through core bus respectively, and inserts the SDH optical-fiber network by tabula rasa or database 3; Above-mentioned two links are main and standby relation each other, when primary link is in running order, and energy normal transmission two-way services, at this moment, standby link is in guard mode, not transport service.The above-mentioned Ethernet interface veneer operation standard LACP agreement that links to each other with Ethernet; and two ports that this veneer links to each other with database 1 and database 2 are configured to same LACP aggregation group; database 1 be configured to the LACP aggregation group with the registered permanent residence and database 2 separately with the registered permanent residence; configuration LACP aggregation group waits and realizes by slot number, port numbers, the polymerization group number of configuration data plate; when two different ports of the database of same groove item are joined the polymerization group number when identical; think that then these two ports are to belong to same aggregation group, these two ports are protected relation each other.
Further, a group id of configuration data plate 1 is identical with a group id of database 2, and promptly the SystemID in the LACP protocol attribute of configuration data plate 1 and database 2 difference correspondences is identical with the Key value.
When particular configuration data plate 1 and database 2, configuration data generally comprises: database slot number, port numbers, whether work, whether protect, LACP attributes such as lag time, recovery time, with the registered permanent residence and the incidence relation of system port and the capacity configuration information of system port etc.
According to the embodiment of the invention, to the layoutprocedure of database 1 and database 2 dual mode can be arranged, be specially:
Mode one, dispose the configuration data of first link and second link respectively, and be saved in the database 1 of the first link correspondence and the database 2 of the second link correspondence respectively, the configuration data of this first link and second link is complementary, and promptly can realize identical business function according to the configuration data of configuration.
The configuration data of mode two, configuration first link also is saved to the database 1 of this first link correspondence, and the configuration data that database 1 is preserved directly copies to the database 2 of the second link correspondence, finishes configuration.This mode by duplicating the quick configuration that realizes link, has improved the efficient of link configuration with respect to mode one.According to this mode, can guarantee that main/slave link realizes identical configuration quickly, database 1 configuration data can be saved and be replicated.Wherein, copy operation can be finished at webmaster, also can directly finish at the database local operation.Configuration data is kept on magnetic disk media or the database FLASH with document form, and is replicated to finish the identical configuration to database 2.Particularly, when copy operation during, can realize by following process at the database local operation:
By netting twine or Serial Port Line a debugging PC is connected with database 1, the configuration information that database 1 is preserved passes on this PC with ASCII character stream binary file format by network interface or serial ports, and be kept on this PC, then, by identical connection mode, promptly this PC is connected to database 2, the ASCII character stream binary file of being preserved on this PC is sent to database 2 by netting twine or Serial Port Line.
In the embodiment of the invention, the configuration of Ethernet service that database 1 and database 2 are accepted including, but not limited to EPL/EVPL (promptly can only with a system port form incidence relation with the registered permanent residence), EPLAN/EPVLAN (promptly one can with a plurality of system port form incidence relations with the registered permanent residence), EPTREE/EVPTREE (promptly one with the registered permanent residence can with a plurality of system port formation incidence relations), and the type of service that two blocks of data plates dispose is identical.The system port that database links to each other with cross board promptly is configured to the business of ethernet type of the same race because of institute's configuration service relation and user's interruption-forming incidence relation with the registered permanent residence and system port.The VCG capacity configuration of the system port of database 1 and system port is identical respectively with the VCG capacity configuration of the system port of database 2 and system port.
According to the embodiment of the invention, finish above-mentioned configuration after, enable LACP and heartbeat detection mechanism, wherein:
Enable the LACP agreement, be the LACP processing capacity of log-on data plate port, send out starting command by webmaster, database is received the LACP processing capacity that starts after the starting command its port, wherein, the LACP processing capacity is meant the defined standard processing capacity of 802.3AD standard;
Enable heartbeat detection mechanism, promptly give database 1 and database 2 by cross board or center control and treatment plate or center power board timed sending handshake information, and the response message of shaking hands of wait database 1 and database 2, do not reach set point number if receive the response message of shaking hands of database feedback, then think this database heartbeat failure, the link that promptly links to each other with this database occurs unusually.
According to above configuration, the Ethernet that example of the present invention provides inserts the link protection method of SDH optical-fiber network, as shown in Figure 3, comprises the steps:
In the above-mentioned steps 301, realize obtaining by heartbeat detection mechanism for the link-state information of first link and second link, particularly, finish first link and second link respectively after the configuration of corresponding database, enable heartbeat detection mechanism, and obtain the link-state information (response message of promptly shaking hands) that database reports.
In the above-mentioned steps 302, obtain the corresponding relation of the link of result and carrying current business, can comprise following several:
When obtaining the result is that the link of the just standing relation of link of all normally or all unusual or primary relation of the Link State of first link and second link is unusual, and then the link of Dui Ying carrying current business is the link of primary relation in first link and second link; Wherein, determine according to whether getting access to the link-state information (response message of promptly shaking hands) that link reports whether this link is normal, if get access to the link-state information that link reports, determine that then this link is normal, do not reach set point number if get access to the link-state information that link reports, determine that then this link is unusual, wherein, set point number can determine that to the reliability that will reach the reliability of requirement is high more according to system, then corresponding set point number is more little, as is made as 1.
To be that the link of primary relation in first link and second link is equipped with the link of relation unusually normal when obtaining the result, and then the link of Dui Ying carrying current business is to be equipped with the link that concerns in first link and second link.
According to the embodiment of the invention, can also detect the running status of link by LACP, and when detecting link failure, give cross board linkdown notification.
In the above-mentioned steps 303, the control current business is transmitted on the described link of determining, comprising:
When current business place link was same link with the link of determining, the control current business continued transmission on its place link, promptly do not carry out link switchover;
When current business place link was different link with the described link of determining, the control current business switches on definite link to be transmitted.
Above control procedure is generally all realized by cross board.
The detailed process of above-mentioned link switchover following (switching to standby link with primary link is example):
The database of cross board chain linked to owner road correspondence sends main the commentaries on classics and is equipped with order, when the database of primary link correspondence receives that main commentaries on classics is ordered fully, this database is forbidden the transmitting-receiving ena-bung function of main port earlier, put the current state machine and be treated to the state of peeling off, and make the opposite end also take place to peel off accordingly by LACP bag notice opposite end; In addition, the database of primary link correspondence is by inserting relevant alarm to these all time slots of related VCG system port with the registered permanent residence, and the notice cross board connects by main corresponding time slot with switching to another standby database (being the database of standby link correspondence);
Cross board sends alternation of hosts's order fully to the database of standby link correspondence, when the database of standby link correspondence receives that the alternation of hosts orders fully, all time slot alarms of related VCG system port are inserted in the cancellation earlier of this database, open the distribution of services ena-bung function of this standby port then, thereby make standby link possess normal professional transmission-receiving function and become primary link.
Corresponding with the foregoing description, the present invention also provides a kind of Ethernet to insert the link protection device of SDH optical-fiber network, as shown in Figure 4, comprising:
Wherein:
Preferably, among the embodiment, above-mentioned link configuration unit 401 specifically is used for:
Dispose the configuration data of first link and be saved to the database of the first link correspondence, the configuration data that the database of this first link correspondence is preserved copies to the database of the second link correspondence; Or,
Dispose the configuration data of first link and second link respectively, and be saved in this first link and each self-corresponding database of second link respectively, wherein, the configuration data of first link and second link is complementary.
Preferably, among the embodiment, above-mentioned link configuration unit 401 also is used for:
Behind configuration first link and second link, enable the Link Aggregation Control Protocol LACP function and the heartbeat detection mechanism of this first link and second link respectively.
Preferably, among the embodiment, above-mentioned control unit 402 specifically is used for:
Obtaining the result is the link of the just standing relation of link of all normally or all unusual or primary relation of the Link State of first link and second link when unusual, determines that the link of carrying current business is the link of primary relation in first link and second link;
Obtain the result be the link of primary relation in first link and second link be equipped with relation unusually link just often, the link of determining the carrying current business is the link that is equipped with relation in described first link and described second link.
Preferably, among the embodiment, above-mentioned control unit 402 specifically is used for:
When current business place link was same link with the described link of determining, the control current business was in its place link transmission;
When current business place link was different link with the described link of determining, the control current business switched to definite described link transmission.
Be to be understood that; the function that the link protection device that this embodiment provides is realized is corresponding one by one with the link protection method flow process that the foregoing description provides; install the more detailed handling process that each functional unit is realized for this; in said method embodiment, done detailed description, be not described in detail herein.
Above-mentioned at least one technical scheme that provides by the embodiment of the invention, dispose first link and second link of main and standby relation each other, obtain the link-state information of this first link and second link, according to obtaining result and the default corresponding relation that obtains result and the link of carrying current business, determine the link of carrying current business and control current business on the link of determining, to transmit, thereby can be in time according to first link of main and standby relation and the link-state information of second link each other, the transmission of control current business has improved the reliability after Ethernet inserts the SDH optical-fiber network.
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 (10)
1. the link protection method of an Ethernet access SDH optical-fiber network is characterized in that dispose first link and second link, described first link and described second link be main and standby relation each other; Described guard method comprises:
Obtain the link-state information of described first link and described second link;
According to obtaining result and the default corresponding relation that obtains result and the link of carrying current business, determine the link of carrying current business, and the control current business is transmitted on the described link of determining.
2. the method for claim 1 is characterized in that, disposes first link and second link, comprising:
Dispose the configuration data of first link and be saved to the database of the described first link correspondence, the configuration data that the database of the described first link correspondence is preserved copies to the database of the second link correspondence; Or,
Dispose the configuration data of first link and second link respectively, and be saved in described first link and each self-corresponding database of second link respectively, the configuration data of described first link and described second link is complementary.
3. method as claimed in claim 1 or 2 is characterized in that, behind configuration first link and second link, also comprises:
Enable the Link Aggregation Control Protocol LACP function and the heartbeat detection mechanism of described first link and second link respectively.
4. the method for claim 1 is characterized in that, the described corresponding relation that obtains the link of result and carrying current business comprises:
If to be the Link State of first link and second link all normally or all unusual or the link of the just standing relation of link of primary relation is unusual for the described result of obtaining, then the link of Dui Ying carrying current business is the link of primary relation in described first link and described second link;
If the link that the described result of obtaining is the link of primary relation in first link and second link to be concerned unusually fully is normal, then the link of Dui Ying carrying current business is the link that is equipped with relation in described first link and described second link.
5. as claim 1 or 4 described methods, it is characterized in that the control current business is transmitted, and comprising on the described link of determining:
If current business place link is same link with the described link of determining, then control current business in its place link transmission;
If current business place link is different links with the described link of determining, then controls current business and switch to definite described link transmission.
6. the link protection device of an Ethernet access SDH optical-fiber network is characterized in that, comprising:
The link configuration unit is used to dispose first link and second link, and described first link and described second link be main and standby relation each other;
Control unit, be used to obtain the link-state information of first link and second link of described link configuration configuration of cells, according to obtaining result and the default corresponding relation that obtains result and the link of carrying current business, determine the link of carrying current business, and the control current business is transmitted on the described link of determining.
7. the device of stating as claim 6 is characterized in that, described link configuration unit specifically is used for:
Dispose the configuration data of first link and be saved to the database of the described first link correspondence, the configuration data that the database of the described first link correspondence is preserved copies to the database of the second link correspondence; Or,
Dispose the configuration data of first link and second link respectively, and be saved in described first link and each self-corresponding database of second link respectively, the configuration data of described first link and described second link is complementary.
8. as claim 6 or 7 described devices, it is characterized in that described link configuration unit also is used for:
Behind configuration first link and second link, enable the Link Aggregation Control Protocol LACP function and the heartbeat detection mechanism of described first link and second link respectively.
9. device as claimed in claim 6 is characterized in that, described control unit specifically is used for:
In the described result of obtaining is the link of the just standing relation of link of all normally or all unusual or primary relation of the Link State of first link and second link when unusual, determines that the link of carrying current business is the link of primary relation in described first link and described second link;
The described result of obtaining be the link of primary relation in first link and second link be equipped with relation unusually link just often, the link of determining the carrying current business is the link that is equipped with relation in described first link and described second link.
10. as claim 6 or 9 described devices, it is characterized in that described control unit specifically is used for:
When current business place link was same link with the described link of determining, the control current business was in its place link transmission;
When current business place link was different link with the described link of determining, the control current business switched to definite described link transmission.
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| CN2009101800234A CN102045600A (en) | 2009-10-22 | 2009-10-22 | Link protection method and device of Ethernet accessed to SDH (Synchronous Digital Hierarchy) optical network |
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| CN2009101800234A CN102045600A (en) | 2009-10-22 | 2009-10-22 | Link protection method and device of Ethernet accessed to SDH (Synchronous Digital Hierarchy) optical network |
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| WO2012159346A1 (en) * | 2011-07-26 | 2012-11-29 | 华为技术有限公司 | Service load allocating method, apparatus and communication system |
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Application publication date: 20110504 |