CN103269277A - Method and system for finding link, first network element and network management equipment - Google Patents
Method and system for finding link, first network element and network management equipment Download PDFInfo
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Abstract
The invention discloses a method and system for finding a link, a first network element and network management equipment. The method for finding the link comprises the steps that step1, the first network element receives a finding parameter sent by a second physical interface of a second network element from a first physical interface, the finding parameter is the only parameter which represents the second physical interface, the first physical interface is a physical interface arranged on the first network element, and the second physical interface is a physical interface arranged on the second network element; step2, the first network element reports the finding parameter and an identification of the first physical interface to the network management equipment so that the network management equipment can find the link between the second physical interface and the first physical interface according to the finding parameter and the identification of the first physical interface. According to the mode, the method and system for finding the link, the first network element and the network management equipment can reduce complexity of finding the link, can improve operation capacity and maintenance capacity of a network, and can reduce operation cost and maintenance cost.
Description
Technical field
The present invention relates to the network management technology field, specifically relate to a kind of method for the discovery link, also relate to a kind of system for the discovery link, also relate to a kind of first network element and Network Management Equipment in addition.
Background technology
In recent years, network user amount is explosive increase, and network size just constantly develops expansion, but and the user improves constantly bandwidth and operation quality requirement, so the network O﹠M ability just seems particularly important.The basis of network O﹠M is network topology, network topology is to constitute specific arrangement mode physics or logic between the member of network, its main purpose be in the acquiring and maintaining network each network element have a annexation between information and each network element, in the time of can in network, breaking down, according to the quick fault location node of network topology.
In the prior art, find IP(Internet Protocol with Network Management Equipment, Internet protocol) network topology in the net territory is example, the discovery mode of the network topology of Network Management Equipment mainly is in conjunction with ICMP(Internet Control Message Protocol, ICMP), ARP(Address Resolution Protocol, address resolution protocol) and SNMP(Simple Network Management Protocol, Simple Network Management Protocol) etc. agreement checks the network element in the IP network territory, find all network elements, obtain the essential information of all network elements then by snmp protocol, draw topology by these essential informations.Wherein, Network Management Equipment is after finding all network elements, each network element is by LLDP(Link Layer Discovery Protocol, Link Layer Discovery Protocol) message sends state information to its neighbours' network element, receive the state information of its neighbours' network element simultaneously by the LLDP message, last Network Management Equipment carries out topological analysis to the essential information of each network element and the state information of reception, thereby finds the annexation between all network elements, and draws topology.
Yet, the present inventor finds in long-term research and development, and prior art needs the mutual receiving status information of each network element after Network Management Equipment obtains the essential information of all network elements, therefore, when the NE quantity of finding when needs was a lot, workload and complexity were higher.In addition, the Topology Discovery mode of prior art has many restrictions, can only be unfavorable for the network standardization construction at the network element in single net territory.
Summary of the invention
In view of this, it is a kind of for method and system, first network element and the Network Management Equipment of finding link that the application provides, and can reduce the complexity of finding link.
For addressing the above problem, it is a kind of for the method for finding link that the application's first aspect provides, it comprises: first network element receives the discovery parameter of second physical interface transmission of second network element from first physical interface, find that parameter is the parameter of unique sign second physical interface, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element; First network element will find that the sign of parameter and first physical interface reports Network Management Equipment, for Network Management Equipment according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
In conjunction with first aspect, in first kind of possible implementation, first network element specifically comprises from the step that first physical interface receives the discovery parameter that second physical interface of second network element sends: first network element receives the service message that second physical interface of second network element sends from first physical interface, service message is the message that link allows transmission, is filled with the discovery parameter in the service message; First network element parses the discovery parameter from service message.
In conjunction with first kind of first aspect or first aspect possible implementation, in second kind of possible implementation, first network element will find that the step that the sign of parameter and first physical interface reports Network Management Equipment specifically comprises: first network element will find that the sign of parameter and first physical interface is filled in the network management protocol message; First network element is given Network Management Equipment with the network management protocol message reporting.
In conjunction with first kind of first aspect possible implementation, in the third possible implementation, service message is SDH (Synchronous Digital Hierarchy) SDH frame, find that parameter is filled in the overhead byte of SDH frame, be specially: overhead byte has been pre-charged with default parameters, after finding that parameter is filled, default parameters is covered.
The third possible implementation in conjunction with first aspect, in the 4th kind of possible implementation, find that parameter comprises that alarm suppresses sign, first network element parses the step of finding parameter and also comprises from service message: first network element is when resolving service message, suppress sign if detect alarm, then suppress the alarm of overhead byte mismatch.
In conjunction with first aspect, first aspect first kind, second kind, the third or the 4th kind of possible implementation, in the 5th kind of possible implementation, first network element and second network element belong to different network domains.
For addressing the above problem, it is a kind of for the method for finding link that the application's second aspect provides, it comprises: Network Management Equipment receives the sign of first physical interface of the discovery parameter of first reported by network elements and first network element, find that parameter is the parameter of second physical interface of unique sign second network element, issue first physical interface by second physical interface, wherein, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element; Network Management Equipment is according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
In conjunction with second aspect, in first kind of possible implementation, Network Management Equipment receives before the step of sign of first physical interface of the discovery parameter of first reported by network elements and first network element, and also comprise: Network Management Equipment issues the discovery parameter to second network element.
In conjunction with first kind of second aspect or second aspect possible implementation, in second kind of possible implementation, the discovery parameter is issued first physical interface by second physical interface, be specially: find that parameter is filled in the service message by second network element, service message sends to first physical interface from second physical interface.
In conjunction with second kind of second aspect possible implementation, in the third possible implementation, service message is SDH (Synchronous Digital Hierarchy) SDH frame, find that parameter is filled in the overhead byte of SDH frame, be specially: overhead byte has been pre-charged with default parameters, after finding that parameter is filled, default parameters is covered.
The third possible implementation in conjunction with second aspect, in the 4th kind of possible implementation, Network Management Equipment issues the step of finding parameter to second network element and also comprises: the transmit time segments of finding parameter is set, make second network element only will find in transmit time segments that parameter is filled in the service message, will find that outside transmit time segments parameter is reduced to default parameters.
In conjunction with second aspect, in the 5th kind of possible implementation, the step of sign that Network Management Equipment receives first physical interface of the discovery parameter of first reported by network elements and first network element specifically comprises: Network Management Equipment receives the network management protocol message of first reported by network elements, and the network management protocol message is filled with the sign of first physical interface of finding parameter and first network element; Network Management Equipment parses the sign of first physical interface of finding parameter and first network element from the network management protocol message.
In conjunction with second aspect, second aspect first kind, second kind, the third, the 4th kind or the 5th kind of possible implementation, in the 6th kind of possible implementation, first network element and second network element belong to different network domains.
For addressing the above problem, the application's third aspect provides a kind of first network element, it comprises receiver module and reporting module, wherein, receiver module is used for receiving from first physical interface discovery parameter of second physical interface transmission of second network element, and will find that parameter sends to reporting module, finds that parameter is the parameter of unique sign second physical interface, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element; Reporting module is used for receiving the discovery parameter from receiver module, the sign of finding parameter and first physical interface is reported Network Management Equipment, for Network Management Equipment according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
In conjunction with the third aspect, in first kind of possible implementation, receiver module specifically comprises: receiving element, for the service message of second physical interface transmission that receives second network element from first physical interface, service message is the message that link allows transmission, is filled with the discovery parameter in the service message; Resolution unit is used for parsing the discovery parameter from service message.
In conjunction with first kind of the third aspect or the third aspect possible implementation, in second kind of possible implementation, reporting module specifically comprises: the message filler cells is used for finding that the sign of parameter and first physical interface is filled in the network management protocol message; Report the unit, be used for giving Network Management Equipment with the network management protocol message reporting.
In conjunction with first kind of the third aspect possible implementation, in the third possible implementation, service message is SDH (Synchronous Digital Hierarchy) SDH frame, second network element will find that parameter is filled in the overhead byte of SDH frame, be specially: overhead byte has been pre-charged with default parameters, second network element after will finding that parameter is filled will cover default parameters.
The third possible implementation in conjunction with the third aspect, in the 4th kind of possible implementation, find that parameter comprises that alarm suppresses sign, first network element comprises that also alarm suppresses module, resolution unit is when resolving service message, suppress sign if detect alarm, then the triggering alarm suppresses module and suppresses the alarm of overhead byte mismatch.
In conjunction with the third aspect, the third aspect first kind, second kind, the third or the 4th kind of possible implementation, in the 5th kind of possible implementation, first network element and second network element belong to different network domains.
For addressing the above problem, the application's fourth aspect provides a kind of Network Management Equipment, it comprises receiver module and link discovery module, wherein, receiver module is for the sign of first physical interface of the discovery parameter that receives first reported by network elements and first network element, and the sign that will find parameter and first physical interface sends to the link discovery module, find that parameter is the parameter of second physical interface of unique sign second network element, issue first physical interface by second physical interface, wherein, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element; The link discovery module is used for receiving the sign of finding parameter and first physical interface from receiver module, according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
In conjunction with fourth aspect, in first kind of possible implementation, Network Management Equipment also comprises and issues module, issues module and is used for issuing the discovery parameter to second network element before receiver module receives the sign of finding parameter and first physical interface.
In conjunction with first kind of fourth aspect or fourth aspect possible implementation, in second kind of possible implementation, the discovery parameter is issued first physical interface by second physical interface, be specially: find that parameter is filled in the service message by second network element, service message sends to first physical interface from second physical interface.
In conjunction with second kind of fourth aspect possible implementation, in the third possible implementation, service message is SDH (Synchronous Digital Hierarchy) SDH frame, second network element will find that parameter is filled in the overhead byte of SDH frame, be specially: overhead byte has been pre-charged with default parameters, after finding that parameter is filled, default parameters is covered.
The third possible implementation in conjunction with fourth aspect, in the 4th kind of possible implementation, issue module and also be used for arranging the transmit time segments of finding parameter, make second network element only will find in transmit time segments that parameter is filled in the service message, will find that outside transmit time segments parameter is reduced to default parameters.
In conjunction with fourth aspect, in the 5th kind of possible implementation, receiver module specifically comprises: receiving element, and for the network management protocol message that receives first reported by network elements, the network management protocol message is filled with the sign of first physical interface of finding parameter and first network element; Resolution unit is for the sign that parses first physical interface of finding parameter and first network element from the network management protocol message.
In conjunction with fourth aspect, fourth aspect first kind, second kind, the third, the 4th kind or the 5th kind of possible implementation, in the 6th kind of possible implementation, first network element and second network element belong to different network domains.
For addressing the above problem, it is a kind of for the system that finds link that the application the 5th aspect provides, and it comprises above-mentioned each first network element and above-mentioned each Network Management Equipment.
The application is used for finding the method and system of link, first network element and Network Management Equipment, first physical interface by first network element receives the discovery parameter of unique sign second physical interface that second physical interface of second network element sends, Network Management Equipment obtains the sign of finding parameter and first physical interface from first network element again, according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface, need the mutual receiving status information of each network element compared to prior art, the application finds link between the different network elements to find parameter as media, thereby can reduce the complexity of finding link, can improve the O﹠M ability of network.
Description of drawings
Fig. 1 is the schematic flow sheet that the application is used to find method first execution mode of link;
Fig. 2 is the schematic flow sheet that the application is used to find method second execution mode of link;
Fig. 3 is the schematic flow sheet that the application is used to find method the 3rd execution mode of link;
Fig. 4 is the schematic flow sheet that the application is used to find method the 4th execution mode of link;
Fig. 5 is the structural representation of the application's first network element first execution mode;
Fig. 6 is the structural representation of the application's first network element second execution mode;
Fig. 7 is the structural representation of the application's Network Management Equipment first execution mode;
Fig. 8 is the structural representation of the application's Network Management Equipment second execution mode;
Fig. 9 is the structural representation that the application is used to find system's one execution mode of link;
Figure 10 is the structural representation of the application's Network Management Equipment the 3rd execution mode;
Figure 11 is the structural representation of the application's first network element the 3rd execution mode.
Embodiment
In below describing, in order to illustrate rather than in order limiting, to have proposed the detail such as particular system structure, interface, technology, understand the application in order to cut thoroughly.Yet, not it will be clear to one skilled in the art that in having other execution mode of these details and can realize the application yet.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders the application's description.
Describe below in conjunction with accompanying drawing and concrete execution mode.Mentioned link among the application, the physical circuit that all refers to have the physical connection relation.
Consulting Fig. 1, is the schematic flow sheet that the application is used to find method first execution mode of link, and this method may further comprise the steps:
110, first network element receives the discovery parameter of second physical interface transmission of second network element from first physical interface, find that parameter is the parameter of unique sign second physical interface, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element.
Wherein, for any one net territory, each network element and other network element can both be distinguished mutually and come, each network element is by at least one physical interface access network, no matter be for the physical interface on the different network elements or for the different physical interfaces on the same network element so, by finding that parameter can uniquely characterize.That is to say, be which physical interface on which network element according to what find that parameter can learn this discovery parameter characterization.In the present embodiment, find that parameter is letter, numeral, additional character or wherein both combinations at least.
In the present embodiment, first network element and second network element can belong to different network domains or same net territory.Different network domains is owing to its network configuration difference, and according to the Topology Discovery mode of prior art, then the network element between the different network domains is mutual sends and the very difficult realization of receiving status information, and the application is also unrestricted to the net territory of application.
120, the first network elements will find that the sign of parameter and first physical interface reports Network Management Equipment, for Network Management Equipment according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
Wherein, if in the first network element access network, and have link between second physical interface of first physical interface of first network element and second network element, second network element just can carry out transfer of data by link and first network element so.Thereby find that parameter can transfer to first physical interface from second physical interface.Though link is in esse, concerning Network Management Equipment, Network Management Equipment and do not know first physical interface and second physical interface between whether have link, namely whether exist the path to connect between second physical interface and first physical interface.
The sign of first physical interface is the identifying information of first physical interface, for example can add port numbers by the IP address and constitute.And find that parameter is to issue first physical interface by second physical interface, Network Management Equipment can be according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface so.Here, find that parameter can perhaps generated by the global configuration file that each network element is implanted, thereby each network element all can be got access to the discovery parameter by the unified configuration of Network Management Equipment.
It should be noted that and to find parameter in the present embodiment as media, to the different network elements in the different network elements in the same net territory or the identical net territory, can adopt and find that parameter finds the link between each network element.In actual applications, if the link in the same net territory between network element has been found or has not needed to find, and only need to find the link of the network element between the different network domains, can arrange so with second network element and belong to other network element in same net territory when receiving the discovery parameter, will not report or not deal with, prevent that with this second network element is to the interference of other network element in same net territory.
Be different from prior art, present embodiment be used for to find that the method for link utilizes the link transmission between first physical interface of second physical interface to the first network element of second network element to find parameter, recycling is found this link of identification discovery of parameter and first physical interface, second network element only need send the discovery parameter, do not need to receive any information of first network element, thereby can reduce the complexity of finding link, after network configuration changes, link can be found in time, fast, thereby the O﹠M ability of network can be improved.In addition, for any one network element, can adopt the discovery parameter, thereby go for the multiple network environment, be conducive to the network standardization construction, save O﹠M cost.
Consulting Fig. 2, is the schematic flow sheet that the application is used to find method second execution mode of link, and this method may further comprise the steps:
210, the first network elements receive the service message of second physical interface transmission of second network element from first physical interface.
Wherein, have link between first physical interface and second physical interface, and service message is the message that link allows transmission, is filled with the discovery parameter in the service message.Find that parameter is the parameter of unique sign second physical interface, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element.
In actual conditions, carrying out transfer of data in each network needs agreement up to specification, and service message is the unit of network transmission, and therefore, service message need meet this quasi-protocol.In the present embodiment, service message is the message that carries out transfer of data between first network element and second network element, and just link allows the message of transmission.
Service message transmits with group, bag or frame usually.In the present embodiment.Service message is SDH(Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)) frame finds that parameter is filled in the overhead byte of SDH frame, and be specially: overhead byte has been pre-charged with default parameters, after finding that parameter is filled, default parameters is covered.
SDH is the suggestion according to International Telecommunications Union's telecommunication standards tissue (ITU-T), and the transmission of the numerical digit signal of the friction speed of definition provides corresponding message structure.Comprise information payload, section overhead and Administrative Unit Pointer each several part in the SDH frame again, the overhead byte of SDH frame can be regenerator section trace byte, channels track byte or signal label byte etc.Particularly, regenerator section trace byte J0 is used for repeating to send " Access Point Identifier ", makes receiving terminal confirm whether keeping connection status really with the transmitting terminal that will be connected according to J0; Channels track byte J1 is first byte of virtual container, is used for repeating to send " passage Access point identifier ", makes receiving terminal determine whether be in lasting connection status with transmitting terminal according to J1; Signal label byte C2 is used to indicate the multiple connection structure of VC frame and the character of information payload, and arranging of C2 need make receiving terminal and transmitting terminal be complementary.In addition, overhead byte can also be SONET(Synchronous Optical Network, Synchronous Optical Network) or OTN(Optical Transport Network, optical transport network) available overhead byte in the frame.
Should be noted that, in the time will finding that parameter is filled in the overhead byte, need select the configuration mode of overhead byte according to actual needs, namely need the Text Mode of configuration overhead byte to be how many bytes, hold the Capability Requirement of finding parameter to satisfy overhead byte.
Brought forward is described, because service message is the message that link allows transmission, when not filling the discovery parameter, still can at this moment, be pre-charged with default parameters in the overhead byte at link transmission SDH frame.Default parameters is for making transmitting terminal and receiving terminal synchronous.Namely be used for the normal data communication between each network element.When finding that parameter is filled, find parameter replacement default parameters, default parameters is covered.
It should be noted that default parameters might not have concrete data here, it can be sky.
Because finding parameter need unify to generate, therefore the essential information of each discovery parameter need be obtained in advance, the basic information packet purse rope unit numbering of network element and physical interface numbering, NE type, physical interface type etc., by these essential informations, just can generate the discovery parameter of first physical interface of unique sign first network element.The mode of obtaining the essential information of network element please refer to prior art, no longer describes in detail herein.
220, the first network elements parse the discovery parameter from service message.
Wherein, after first network element receives service message, will resolve service message, to obtain the data that need.Owing to find that parameter is filled in the service message, therefore, when resolving service message, can access the discovery parameter.
Network element ubiquity overhead byte mismatch alarm in present most of network.When carrying out proper communication between the network element, what fill in the SDH frame is default parameters, if what fill in the SDH frame that NE Discovery once receives is and the unmatched parameter of default parameters, network element will judge that may network to take place unusual so, just sends the alarm of overhead byte mismatch.Consider to comprise a lot of network elements in the network, if each network element finds that parameter and default parameters carry out the overhead byte mismatch and alarm when not matching detecting, will greatly increase the workload of network O﹠M, influence the normal operation of network.Therefore, in the present embodiment, find that parameter comprises that alarm suppresses sign, so that first network element when resolving service message, suppresses sign if detect alarm, just suppress the alarm of overhead byte mismatch.Find that parameter comprises alarm and suppresses sign owing to have only, then first network element detects except finding that other of parameter are any and all will send the overhead byte mismatch with the unmatched parameter of default parameters and alarm.
To be that example is elaborated to overhead byte with table 1 below.
Table 1 overhead byte is filled the example of finding parameter
| * | T | O | P | O | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
The overhead byte of SDH frame is configured to 16 byte Text Modes usually, for example J0 overhead byte (regenerator section trace byte) is configured to 16 byte Text Modes, wherein the 0th is taken by the SDH frame, be used for other information of expression, " * " represents any character, wherein can fill for the 1st to the 15th.In table 1, the 1st to the 4th is " TOPO " to be that alarm suppresses sign in this example.The 5th to the 15th, in this example i.e. " 00001011011 ", be the parameter of second physical interface of unique sign second network element.First network element can find that " TOPO00001011011 " and default parameters are unmatched when resolving, here, default parameters can arrange according to actual needs, as long as discovery parameter and default parameters are inconsistent.Be " TOPO " but first network element is at first detected, and " TOPO " to be alarm suppress sign, then first network element will suppress the overhead byte mismatch and alarm.
In actual applications, alarm inhibition sign can be set take n data bit, then residue (15-n) individual data bit is used for filling rest parameter, here, n is less than 10, then can have 99999 kinds at most and find parameter, in order to characterize the physical interface of 99999 kinds of network elements, can satisfy the demand of most of networks.
230, the first network elements will find that the sign of parameter and first physical interface is filled in the network management protocol message.
Wherein, communicate the agreement that needs to satisfy regulation between first network element and second network element, same, communicate the agreement that also will satisfy regulation between first network element and the Network Management Equipment.It is the network management protocol message.For instance, the network management protocol message can be the SNMP message.
240, the first network elements are given Network Management Equipment with the network management protocol message reporting, for Network Management Equipment according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
Wherein, after Network Management Equipment receives the network management protocol message, will resolve the network management protocol message, thereby obtain finding the sign of parameter and first physical interface.
The method that is used for the discovery link of present embodiment is when second network element sends the discovery parameter, to find that parameter is filled in the service message of link permission transmission, rely on the service message transmission to find parameter, and service message itself can be used for normal data communication, thereby do not need the new message of structure separately, can not increase the burden of network element, need not introduce new agreement and relevant negotiation mechanism yet.In addition, cover default parameters when filling owing to find parameter, therefore need not open up new byte space for finding parameter, further reduced the complexity of finding link.
Consulting Fig. 3, is the schematic flow sheet that the application is used to find method the 3rd execution mode of link, and this method may further comprise the steps:
310, Network Management Equipment receives the sign of first physical interface of the discovery parameter of first reported by network elements and first network element, finds that parameter is the parameter of second physical interface of unique sign second network element, issues first physical interface by second physical interface.
Wherein, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element.
Though Network Management Equipment is managed first network element and second network element, and do not know whether there is link between second physical interface of first physical interface of first network element and second network element.First network element can receive the discovery parameter, illustrates that the link between second physical interface and first physical interface is in esse.
320, Network Management Equipment is according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
Wherein, Network Management Equipment can know that by finding parameter an end of link is second physical interface, can know that by the sign of first physical interface other end of link is first physical interface, thereby can find the link between second physical interface to the first physical interface.
Consulting Fig. 4, is the schematic flow sheet that the application is used to find method the 4th execution mode of link, and this method may further comprise the steps:
410, Network Management Equipment issues the discovery parameter to second network element.
Wherein, Network Management Equipment is known the essential information of each network element in advance, and Network Management Equipment can be each physical interface unified distribution discovery parameter of each network element by these essential informations, thereby can guarantee to find the uniqueness of parameter.
In the present embodiment, after finding that parameter is issued to second network element, find that parameter will send to first physical interface from second physical interface, particularly, find that parameter is filled in the service message by second network element, service message sends to first physical interface from second physical interface.Alternatively, service message is the SDH frame, finds that parameter is filled in the overhead byte of SDH frame, and be specially: overhead byte has been pre-charged with default parameters, after the discovery parameter is filled, default parameters is covered.Default parameters is the parameter that network element is filled when carrying out normal data communication.
Further, alternatively, Network Management Equipment also arranges the transmit time segments of finding parameter when issuing the discovery parameter to second network element, make second network element only will find in transmit time segments that parameter is filled in the service message, will find that outside transmit time segments parameter is reduced to default parameters.
It is its basic function that network element carries out data communication, when Network Management Equipment is found link, should reduce the influence to the basic function of network element as far as possible, the transmit time segments of finding parameter is set, can prevent when finding link owing to some factor causes the unsuccessful endless loop that enters so that finding the time of link is restricted.Transmit time segments can repeat, such as transmit time segments is 5 minutes, and transmit time segments was to repeat once in the cycle with 12 hours.For instance, fill the discovery parameter in 01:00～01:05 time period and find link, fill default parameters in 01:06～13:06 time period and carry out normal data communication.
420, Network Management Equipment receives the network management protocol message of first reported by network elements, and the network management protocol message is filled with the sign of first physical interface of finding parameter and first network element.
Wherein, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element.Network Management Equipment and first network element communicate by the network management protocol message.
430, Network Management Equipment parses the sign of first physical interface of finding parameter and first network element from the network management protocol message..
440, Network Management Equipment is according to the link between identification discovery second physical interface to the first physical interface of finding parameter and first physical interface.
Wherein, Network Management Equipment does not know whether there is link between first physical interface and second physical interface in advance, Network Management Equipment is after getting access to the sign of finding parameter and first physical interface, just can find the link between second physical interface to the first physical interface, behind all link discoveries, can draw out network topology.
Consulting Fig. 5, is the structural representation of the application's first network element first execution mode.First network element 500 comprises receiver module 510 and reporting module 520.Has first physical interface 530 on first network element 500.
For any one net territory, each network element and other network element can both be distinguished mutually and come, each network element is by at least one physical interface access network, no matter be for the physical interface on the different network elements or for the different physical interfaces on the same network element so, by finding that parameter can uniquely characterize.That is to say, be which physical interface on which network element according to what find that parameter can learn this discovery parameter characterization.In the present embodiment, find that parameter is letter, numeral, additional character or wherein both combinations at least.
If in first network element, 500 access networks, and have link between second physical interface of first physical interface 530 of first network element 500 and second network element, first network element 500 just can carry out transfer of data by link and second network element so.Thereby find that parameter can transfer to first physical interface 530 from second physical interface.Whether though link is in esse, concerning Network Management Equipment, Network Management Equipment does not also know whether there is link between first physical interface 530 and second physical interface, namely exist physical pathway to connect between first physical interface 530 and second physical interface.
The sign of first physical interface 530 that reporting module 520 reports is identifying informations of first physical interface 530, can add port numbers by the IP address and constitute.And find that parameter is to issue first physical interface 530 by second physical interface, Network Management Equipment can be according to the link between identification discovery second physical interface to the first physical interface 530 of finding parameter and first physical interface 530 so.Here, find that parameter can perhaps generated by the global configuration file that each network element is implanted, thereby each network element all can be got access to the discovery parameter by the unified configuration of Network Management Equipment.
Consulting Fig. 6, is the structural representation of the application's first network element second execution mode.
Alternatively, service message is the SDH frame, and second network element will find that parameter is filled in the overhead byte of SDH frame, and be specially: overhead byte has been pre-charged with default parameters, and second network element after will finding that parameter is filled will cover default parameters.Service message is the unit of network transmission, and default parameters is used for the normal data communication between each network element.Alternatively, find to include in the parameter alarm and suppress sign, resolution unit 612 suppresses sign if detect alarm when the parsing service message, and then the triggering alarm suppresses module 630 and suppresses the alarm of overhead byte mismatch.Consider and comprise a lot of network elements in the network, if each network element finds that parameter and default parameters carry out the overhead byte mismatch and alarm when not matching detecting, the workload of network O﹠M will greatly be increased, influence the normal operation of network, find that parameter comprises alarm and suppresses sign owing to have only, then first network element 600 all will send the overhead byte mismatch with the unmatched parameter of default parameters and alarm detecting except finding that other of parameter are any.
Consulting Fig. 7, is the structural representation of the application's Network Management Equipment first execution mode.Network Management Equipment 700 comprises receiver module 710 and link discovery module 720.Network Management Equipment 700 can communicate with the first network element (not shown) and the second network element (not shown).
Though Network Management Equipment 700 is managed first network element and second network element, and whether there is link between second physical interface of first physical interface of ignorant first network element and second network element.Receiver module 710 receives the discovery parameter, and first network element obtains to find parameter to illustrate that the link between second physical interface to the first physical interface is in esse from second network element.Link discovery module 720 can know that by finding parameter an end of link is second physical interface, can know that by the sign of first physical interface other end of link is first physical interface, thereby can find the link between second physical interface to the first physical interface.
Consulting Fig. 8, is the structural representation of the application's Network Management Equipment second execution mode.Network Management Equipment 800 comprises and issues module 810, receiver module 820 and link discovery module 830.Network Management Equipment 800 can communicate with the first network element (not shown) and the second network element (not shown).Alternatively, first network element and second network element belong to different network domains.
After Network Management Equipment 800 is known the essential information of each network element in advance, can be each physical interface unified distribution discovery parameter of each network element by these essential informations, thereby can guarantee to find the uniqueness of parameter.Issue 810 of modules and be used for issuing the discovery parameter to second network element, find that parameter is the parameter of second physical interface of unique sign second network element.
In the present embodiment, after finding that parameter is handed down to second network element, find that parameter will send to first physical interface from second physical interface, be specially: find that parameter is filled in the service message by second network element, service message sends to first physical interface from second physical interface.Alternatively, service message is the SDH frame, and second network element will find that parameter is filled in the overhead byte of SDH frame, and particularly, overhead byte has been pre-charged with default parameters, after the discovery parameter is filled, default parameters is covered.Alternatively, issue module 810 when issuing the discovery parameter, the transmit time segments of finding parameter also is set, make second network element only will find in transmit time segments that parameter is filled in the service message, will find that outside transmit time segments parameter is reduced to default parameters.
Particularly, receiver module 820 comprises receiving element 821 and resolution unit 822.Receiving element 821 is used for receiving the network management protocol message of first reported by network elements, and the network management protocol message is filled with the sign of first physical interface of finding parameter and first network element.Resolution unit 822 is used for parsing from the network management protocol message sign of first physical interface of finding parameter and first network element.
Consulting Fig. 9, is the structural representation that the application is used to find system's one execution mode of link.
This system includes Network Management Equipment 910 and first network element 920.Network Management Equipment 910 is the Network Management Equipment of aforementioned embodiments, and first network element 920 is first network element of aforementioned embodiments.Network Management Equipment 910 and first network element 920 all communicate with second network element 930, the detailed process of the link between first physical interface 921 of second physical interface, 931 to first network elements 920 of Network Management Equipment 910 discoveries second network element 930 please refer to the associated description of aforementioned embodiments, the other parts of this system please refer to prior art, repeat no more herein.
Consulting Figure 10, is the structural representation of the application's Network Management Equipment the 3rd execution mode.
The sign of the discovery parameter of communication interface 12 receptions first reported by network elements and first physical interface of first network element, and will find that the sign of parameter and first physical interface sends to memory 13.Wherein, find that parameter is the parameter of second physical interface of unique sign second network element, issue first physical interface by second physical interface, first physical interface is a physical interface on first network element, and second physical interface is a physical interface on second network element.
The specific implementation process of program 131 can repeat no more referring to the associated description of method and system, first network element and the Network Management Equipment of aforementioned embodiments herein.
Consulting Figure 11, is the structural representation of the application's first network element the 3rd execution mode.
First network element 20 comprises processor 21, communication interface 22 and memory 23.First network element 20 communicates with Network Management Equipment (not shown) and the second network element (not shown).First network element 20 and second network element can belong to different network domains.
The specific implementation process of program 231 can repeat no more referring to the associated description of method and system, first network element and the Network Management Equipment of aforementioned embodiments herein.
Should be appreciated that in all execution modes that the application provides, disclosed apparatus and method can realize by alternate manner.For example, the device embodiments that more than provides only is schematic, for example, the division of module or unit, only be that a kind of logic function is divided, can have other dividing mode during actual the realization, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or directly to be coupled or to communicate to connect can be by some interfaces, the indirect coupling of device or unit or communicate to connect can be electrically, machinery or other form.
Above-mentioned functional module as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of unit to realize the purpose of present embodiment scheme according to the actual needs.
In addition, each functional module in each execution mode of the application can be integrated in the processing unit, also can be that the independent physics of each functional module exists, and also can two or more functional modules be integrated in the unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If above-mentioned integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, part or all or part of of this technical scheme that the application's technical scheme contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) or processor (processor) carry out all or part of step of the described method of each execution mode of the application.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD.
By the way, of the present invention for the method and system of finding link, first network element and Network Management Equipment second physical interface of finding unique sign second network element of parameter, second physical interface will find that again parameter issues first physical interface of first network element, Network Management Equipment obtains the sign of finding parameter and first physical interface from first network element, thereby find the link between second physical interface to the first physical interface, can reduce the complexity of finding link, improve the O﹠M ability of network, and can be applied in the multiple network environment, be conducive to the network standardization construction, save O﹠M cost.
The above only is embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (27)
1. method of be used for finding link is characterized in that described method comprises:
First network element receives the discovery parameter of second physical interface transmission of second network element from first physical interface, described discovery parameter is the parameter of described second physical interface of unique sign, described first physical interface is a physical interface on described first network element, and described second physical interface is a physical interface on described second network element;
Described first network element reports Network Management Equipment with the sign of described discovery parameter and described first physical interface, for described Network Management Equipment according to the link of described second physical interface of the identification discovery of described discovery parameter and described first physical interface between described first physical interface.
2. method according to claim 1 is characterized in that, described first network element specifically comprises from the step that first physical interface receives the discovery parameter that second physical interface of second network element sends:
Described first network element receives the service message that second physical interface of second network element sends from first physical interface, and described service message is the message that described link allows transmission, is filled with described discovery parameter in the described service message;
Described first network element parses described discovery parameter from described service message.
3. method according to claim 1 and 2 is characterized in that, described first network element specifically comprises the step that the sign of described discovery parameter and described first physical interface reports Network Management Equipment:
Described first network element is filled in the sign of described discovery parameter and described first physical interface in the network management protocol message;
Described first network element is given Network Management Equipment with described network management protocol message reporting.
4. method according to claim 2 is characterized in that, described service message is SDH (Synchronous Digital Hierarchy) SDH frame, and described discovery parameter is filled in the overhead byte of described SDH frame, is specially:
Described overhead byte has been pre-charged with default parameters, after described discovery parameter is filled, described default parameters is covered.
5. method according to claim 4 is characterized in that, described discovery parameter comprises that alarm suppresses sign, and described first network element parses described discovery parameter from described service message step also comprises:
Described first network element suppresses sign if detect described alarm when resolving described service message, then suppress the alarm of overhead byte mismatch.
6. according to each described method of claim 1 to 5, it is characterized in that described first network element and described second network element belong to different network domains.
7. method of be used for finding link is characterized in that described method comprises:
Network Management Equipment receives the sign of first physical interface of the discovery parameter of first reported by network elements and described first network element, described discovery parameter is the parameter of second physical interface of unique sign second network element, issue described first physical interface by described second physical interface, wherein, described first physical interface is a physical interface on described first network element, and described second physical interface is a physical interface on described second network element;
Described Network Management Equipment is according to the link of described second physical interface of the identification discovery of described discovery parameter and described first physical interface between described first physical interface.
8. method according to claim 7 is characterized in that, described Network Management Equipment receives before the step of sign of first physical interface of the discovery parameter of first reported by network elements and described first network element, also comprises:
Described Network Management Equipment issues described discovery parameter to described second network element.
9. according to claim 7 or 8 described methods, it is characterized in that described discovery parameter is issued described first physical interface by described second physical interface, is specially:
Described discovery parameter is filled in the service message by described second network element, and described service message sends to described first physical interface from described second physical interface.
10. method according to claim 9 is characterized in that, described service message is SDH (Synchronous Digital Hierarchy) SDH frame, and described discovery parameter is filled in the overhead byte of described SDH frame, is specially:
Described overhead byte has been pre-charged with default parameters, after described discovery parameter is filled, described default parameters is covered.
11. method according to claim 10 is characterized in that, described Network Management Equipment also comprises to the step that described second network element issues described discovery parameter:
The transmit time segments of described discovery parameter is set, makes described second network element only in described transmit time segments, described discovery parameter is filled in the described service message, outside described transmit time segments, described discovery parameter is reduced to described default parameters.
12. method according to claim 7 is characterized in that, the step of sign that described Network Management Equipment receives first physical interface of the discovery parameter of described first reported by network elements and described first network element specifically comprises:
Described Network Management Equipment receives the network management protocol message of described first reported by network elements, and described network management protocol message is filled with the sign of first physical interface of finding parameter and described first network element;
Described Network Management Equipment parses the sign of first physical interface of described discovery parameter and described first network element from described network management protocol message.
13., it is characterized in that described first network element and described second network element belong to different network domains according to each described method of claim 7 to 12.
14. a network element is characterized in that, described first network element comprises receiver module and reporting module, wherein,
Described receiver module is used for receiving from first physical interface discovery parameter of second physical interface transmission of second network element, and described discovery parameter sent to described reporting module, described discovery parameter is the parameter of described second physical interface of unique sign, described first physical interface is a physical interface on described first network element, and described second physical interface is a physical interface on described second network element;
Described reporting module is used for receiving described discovery parameter from described receiver module, the sign of described discovery parameter and described first physical interface is reported Network Management Equipment, for described Network Management Equipment according to the link of described second physical interface of the identification discovery of described discovery parameter and described first physical interface between described first physical interface.
15. first network element according to claim 14 is characterized in that, described receiver module specifically comprises:
Receiving element, for the service message that second physical interface that receives second network element from first physical interface sends, described service message is the message that described link allows transmission, is filled with described discovery parameter in the described service message;
Resolution unit is used for parsing described discovery parameter from described service message.
16. according to claim 14 or 15 described first network elements, it is characterized in that described reporting module specifically comprises:
The message filler cells is used for the sign of described discovery parameter and described first physical interface is filled in the network management protocol message;
Report the unit, be used for giving Network Management Equipment with described network management protocol message reporting.
17. first network element according to claim 15 is characterized in that, described service message is SDH (Synchronous Digital Hierarchy) SDH frame, and described second network element is filled in described discovery parameter in the overhead byte of described SDH frame, is specially:
Described overhead byte has been pre-charged with default parameters, and described second network element after described discovery parameter is filled covers described default parameters.
18. first network element according to claim 17, it is characterized in that, described discovery parameter comprises that alarm suppresses sign, described first network element comprises that also alarm suppresses module, described resolution unit is when resolving described service message, suppress sign if detect described alarm, then trigger described alarm and suppress the alarm of module inhibition overhead byte mismatch.
19., it is characterized in that described first network element and described second network element belong to different network domains according to each described first network element of claim 14 to 18.
20. a Network Management Equipment is characterized in that, described Network Management Equipment comprises receiver module and link discovery module, wherein,
Described receiver module is for the sign of first physical interface of the discovery parameter that receives first reported by network elements and described first network element, and the sign of described discovery parameter and described first physical interface sent to described link discovery module, described discovery parameter is the parameter of second physical interface of unique sign second network element, issue described first physical interface by described second physical interface, wherein, described first physical interface is a physical interface on described first network element, and described second physical interface is a physical interface on described second network element;
Described link discovery module is used for receiving from described receiver module the sign of described discovery parameter and described first physical interface, according to described second physical interface of the identification discovery of described discovery parameter and described first physical interface to the link between described first physical interface.
21. Network Management Equipment according to claim 20, it is characterized in that, described Network Management Equipment comprises also and issues module that the described module that issues is used for issuing described discovery parameter to described second network element before described receiver module receives the sign of described discovery parameter and described first physical interface.
22., it is characterized in that described discovery parameter is issued described first physical interface by described second physical interface, is specially according to claim 20 or 21 described Network Management Equipments:
Described discovery parameter is filled in the service message by described second network element, and described service message sends to described first physical interface from described second physical interface.
23. Network Management Equipment according to claim 22 is characterized in that, described service message is SDH (Synchronous Digital Hierarchy) SDH frame, and described second network element is filled in described discovery parameter in the overhead byte of described SDH frame, is specially:
Described overhead byte has been pre-charged with default parameters, after described discovery parameter is filled, described default parameters is covered.
24. Network Management Equipment according to claim 23, it is characterized in that, the described module that issues is also for the transmit time segments that described discovery parameter is set, make described second network element only in described transmit time segments, described discovery parameter is filled in the described service message, outside described transmit time segments, described discovery parameter is reduced to described default parameters.
25. Network Management Equipment according to claim 20 is characterized in that, described receiver module specifically comprises:
Receiving element, for the network management protocol message that receives described first reported by network elements, described network management protocol message is filled with the sign of first physical interface of finding parameter and described first network element;
Resolution unit is for the sign that parses first physical interface of described discovery parameter and described first network element from described network management protocol message.
26., it is characterized in that described first network element and described second network element belong to different network domains according to each described Network Management Equipment of claim 20 to 25.
27. a system that is used for finding link is characterized in that described system comprises according to each described first network element of claim 14 to 19 with according to each described Network Management Equipment of claim 20 to 26.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266530A (en) * | 2019-06-14 | 2019-09-20 | 浪潮思科网络科技有限公司 | A kind of link discovery method and device based on Opendaylight frame |
| CN111200514A (en) * | 2018-11-20 | 2020-05-26 | 中国移动通信集团有限公司 | Network element information processing method and device, network platform and storage medium |
| CN112671567A (en) * | 2020-12-16 | 2021-04-16 | 中盈优创资讯科技有限公司 | 5G core network topology discovery method and device based on service interface |
| CN112671565A (en) * | 2020-12-16 | 2021-04-16 | 中盈优创资讯科技有限公司 | 5G core network topology discovery method and device based on signaling link |
| CN113364641A (en) * | 2020-03-06 | 2021-09-07 | 烽火通信科技股份有限公司 | Loopback detection method and system for EOS (Ethernet over coax) service |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047618A (en) * | 2006-03-29 | 2007-10-03 | 华为技术有限公司 | Method and system for acquiring network route information |
| WO2011029695A1 (en) * | 2009-09-14 | 2011-03-17 | Alcatel Lucent | Method and apparatus for automatic discovery in optical transport networks |
| EP2469761A1 (en) * | 2010-12-21 | 2012-06-27 | Tektronix, Inc. | Topology detection of LTE nodes |
| CN102790950A (en) * | 2011-05-18 | 2012-11-21 | 中兴通讯股份有限公司 | Methods for neighbor topology discovery and cooperative communication of multi-interface terminal and multi-interface terminal |
-
2013
- 2013-04-22 CN CN201310140945.9A patent/CN103269277B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047618A (en) * | 2006-03-29 | 2007-10-03 | 华为技术有限公司 | Method and system for acquiring network route information |
| WO2011029695A1 (en) * | 2009-09-14 | 2011-03-17 | Alcatel Lucent | Method and apparatus for automatic discovery in optical transport networks |
| CN102498683A (en) * | 2009-09-14 | 2012-06-13 | 阿尔卡特朗讯 | Method and apparatus for automatic discovery in optical transport networks |
| EP2469761A1 (en) * | 2010-12-21 | 2012-06-27 | Tektronix, Inc. | Topology detection of LTE nodes |
| CN102790950A (en) * | 2011-05-18 | 2012-11-21 | 中兴通讯股份有限公司 | Methods for neighbor topology discovery and cooperative communication of multi-interface terminal and multi-interface terminal |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200514A (en) * | 2018-11-20 | 2020-05-26 | 中国移动通信集团有限公司 | Network element information processing method and device, network platform and storage medium |
| CN110266530A (en) * | 2019-06-14 | 2019-09-20 | 浪潮思科网络科技有限公司 | A kind of link discovery method and device based on Opendaylight frame |
| CN110266530B (en) * | 2019-06-14 | 2022-05-27 | 浪潮思科网络科技有限公司 | Link discovery method and device based on Opendataright framework |
| CN113364641A (en) * | 2020-03-06 | 2021-09-07 | 烽火通信科技股份有限公司 | Loopback detection method and system for EOS (Ethernet over coax) service |
| CN113364641B (en) * | 2020-03-06 | 2022-03-01 | 烽火通信科技股份有限公司 | Loopback detection method and system for EOS (Ethernet over coax) service |
| CN112671567A (en) * | 2020-12-16 | 2021-04-16 | 中盈优创资讯科技有限公司 | 5G core network topology discovery method and device based on service interface |
| CN112671565A (en) * | 2020-12-16 | 2021-04-16 | 中盈优创资讯科技有限公司 | 5G core network topology discovery method and device based on signaling link |
| CN112671567B (en) * | 2020-12-16 | 2023-02-21 | 中盈优创资讯科技有限公司 | 5G core network topology discovery method and device based on service interface |
| CN112671565B (en) * | 2020-12-16 | 2023-02-21 | 中盈优创资讯科技有限公司 | 5G core network topology discovery method and device based on signaling link |
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