CN103684841A - Network management server and link discovery comparison method - Google Patents
Network management server and link discovery comparison method Download PDFInfo
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- CN103684841A CN103684841A CN201210363543.0A CN201210363543A CN103684841A CN 103684841 A CN103684841 A CN 103684841A CN 201210363543 A CN201210363543 A CN 201210363543A CN 103684841 A CN103684841 A CN 103684841A
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Abstract
The invention provides a network management server and a link discovery comparison method. The network management server comprises a storage module used for storing a historical link data table, a receiving module used for receiving network element information reported by all network elements managed by the network management server based on a link layer discovery protocol function, a calculation module used for calculating to obtain real-time link data information according to the network element information received by the receiving module and forming a real-time link data table based on the real-time link data information, a comparison module used for comparing data link information in the historical link data table with data link information in the real-time link data table and acquiring a comparison result, and a presentation module used for presenting the comparison result. According to the network management server and the link discovery comparison method, change of link connection among the network element is directly presented when real-time link connection among the network elements is automatically acquired.
Description
Technical field
The present invention relates to the communications field, relate in particular to the comparison method of a kind of NM server and link discovery.
Background technology
Day by day huge along with communication network, the NE quantity that NM server is managed constantly expands, and links between network elements connection also can be had some change in real time, and the link often manually carrying out between network element upgrades, and to user, has brought some troubles.
Patent publication No. is CN1780250A, a kind of automatic discovering method of network topology has been proposed in the patent document that open day is on May 31st, 2006, comprise the following steps: Gateway Network Element is inquired about by timing or to each network element in network, collected the routing iinformation in its routing table by network element reach the standard grade or the roll off the production line mode of Event triggered inquiry, described routing iinformation comprises the physical connection information between network element ID and network element, by described Gateway Network Element, described routing iinformation is reported to network management system.
Although the automatic discovering method of the network topology providing in described patent document can report routing iinformation automatically, do not need manually to carry out link renewal, but user can only know the link connection situation after renewal, can not directly know which change has occurred the link connection between network element.
Summary of the invention
The object of the embodiment of the present invention is to provide the comparison method of a kind of NM server and link discovery, and between automatic acquisition network element, in real-time link connection, the situation of change directly links between network elements being connected presents.
For achieving the above object, the embodiment of the present invention provides a kind of NM server, at least manages plural network element, comprising:
Memory module, for storing a historical link tables of data;
Receiver module, the net element information reporting based on Link Layer Discovery Protocol function for receiving whole network elements of described network manager service management;
Computing module, calculates real-time link data message for the net element information receiving according to described receiver module, and forms a real-time link tables of data by described real-time link data message;
Comparing module, for the link data information of described historical link tables of data and described real-time link tables of data is compared, obtains comparison result;
Present module, for presenting described comparison result.
Wherein, preferably, the link data recording in described comparison result is:
The link data of unique link in described historical link tables of data and described real-time link tables of data.
Wherein, preferably, in described historical link tables of data and described real-time link tables of data, unique link comprises the link of the first kind and/or the link of Second Type, wherein:
In the link data table of the two ends of the link of the first kind in described historical link tables of data and described real-time link tables of data, there is no record;
All there is record at least one end of the link of Second Type in described historical link tables of data and described real-time link tables of data.
Wherein, preferably, in described historical link tables of data and described real-time link tables of data, unique link also comprises the link of the 3rd type, wherein:
The two ends of the link of the 3rd type are all in described real-time link tables of data, and one end network element of link is the network element of described network manager service management, and the other end network element of link is not the network element of described network manager service management.
Wherein, preferably, the link of the described first kind is specifically also divided into the link that increases the link of subtype and delete subtype, wherein:
The two ends that increase the link of subtype do not have record in described historical link tables of data;
The two ends of deleting the link of subtype do not have record in described real-time link tables of data.
Wherein, preferably, the module that presents of above-mentioned NM server specifically comprises:
Show module is set, for the user of described NM server, display mode is arranged;
The first display module, shows for the display mode that module arranges is set according to described demonstration link data and the Linktype that comparison obtains.
Wherein, preferably, above-mentioned network manager service implement body also comprises:
Acquisition module, the first Linktype of selecting for obtaining user;
Determination module, for the link data from described comparison result record, selecting Linktype is the link data of described the first Linktype;
Update module, for utilizing the link data of selection, upgrades the historical link tables of data of described memory module storage;
The second display module, for the link data of the historical link tables of data with after topological connected mode display update.
In order to realize object of the present invention, the embodiment of the present invention also provides a kind of comparison method of link discovery, for NM servers of at least managing two above network elements, comprising:
Receive the net element information that whole network elements of described network manager service management report based on Link Layer Discovery Protocol function;
According to the net element information receiving, calculate real-time link data message, and form a real-time link tables of data by described real-time link data message;
Link data information in pre-stored historical link tables of data and described real-time link tables of data is compared, obtain comparison result;
Present described comparison result.
Wherein, preferably, the link data recording in described comparison result is:
The link data of unique link in described historical link tables of data and described real-time link tables of data.
Wherein, preferably, in described historical link tables of data and described real-time link tables of data, unique link comprises the link of the first kind and/or the link of Second Type, wherein:
In the link data table of the two ends of the link of the first kind in described historical link tables of data and described real-time link tables of data, there is no record;
All there is record at least one end of the link of Second Type in described historical link tables of data and described real-time link tables of data.
Wherein, preferably, in described historical link tables of data and described real-time link tables of data, unique link also comprises the link of the 3rd type, wherein:
The two ends of the link of the 3rd type are all in described real-time link tables of data, and one end network element of link is the network element of described network manager service management, and the other end network element of link is not the network element of described network manager service management.
Wherein, preferably, the link of the described first kind is specifically also divided into the link that increases the link of subtype and delete subtype, wherein:
The two ends that increase the link of subtype do not have record in described historical link tables of data;
The two ends of deleting the link of subtype do not have record in described real-time link tables of data.
Wherein, preferably, in above-mentioned method, present described comparison result and specifically comprise:
User arranges display mode;
According to the display mode arranging, show link data and the Linktype that comparison obtains.
Wherein, preferably, above-mentioned method specifically also comprises:
Obtain the first Linktype that user selects;
From the link data of described comparison result record, selecting Linktype is the link data of described the first Linktype;
Utilize the link data of selecting, described historical link tables of data is upgraded;
Link data with the historical link tables of data after topological connected mode display update.
The embodiment of the present invention has at least one in following beneficial effect:
Can, between automatic acquisition network element in real-time link connection, link-attached situation of change be presented;
The calculating of the chain-link automatic finding of the whole network network element is placed on NM server, has alleviated the computation burden of single network element, thereby improved the robustness of the network operation;
Can need to display mode be set to comparison result according to user, increase friendly;
The Linktype that can select according to user, classification refreshes Topology display.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of NM server in the embodiment of the present invention;
Fig. 2 is the structural representation of another kind of NM server in the embodiment of the present invention;
Fig. 3 is the structural representation of another NM server in the embodiment of the present invention;
Fig. 4 is the schematic flow sheet of a kind of comparison method of link discovery in the embodiment of the present invention;
Fig. 5 is the schematic flow sheet of the comparison method of another kind of link discovery in the embodiment of the present invention;
Fig. 6 is the schematic flow sheet of the comparison method of another link discovery in the embodiment of the present invention.
Embodiment
For technical problem, technical scheme and advantage that the embodiment of the present invention will be solved are clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The embodiment of the present invention provides a kind of NM server, at least manages plural network element, as shown in Figure 1, comprising:
Memory module, for storing a historical link tables of data;
Receiver module, the net element information reporting based on Link Layer Discovery Protocol function for receiving whole network elements of described network manager service management;
Computing module, calculates real-time link data message for the net element information receiving according to described receiver module, and forms a real-time link tables of data by described real-time link data message;
Comparing module, for the link data information of described historical link tables of data and described real-time link tables of data is compared, obtains comparison result;
Present module, for presenting described comparison result.
The receiver module of described NM server is after receiving described net element information, computing module can calculate real-time link data message according to described net element information, and form a real-time link tables of data by described real-time link data message, comparing module can be compared the historical link tables of data in described real-time link tables of data and memory module, obtain comparison result, and finally by the described module that presents, comparison result is presented.
Described NM server, by the link data information in comparison historical link tables of data and real-time link tables of data, has obtained the situation of change of links between network elements, and has presented, and has reached object of the present invention.
In addition, the calculating that the embodiment of the present invention is found the whole network network element link is automatically placed on NM server, has alleviated the computation burden of single network element, thereby has improved the robustness of the network operation.
First NM server can create NE, and configures or obtains net element information and preserve from network element, and inquiry network element MAC Address preservation, open network element LLDP function.Configure or obtain net element information and comprise: element name, version information, veneer, port type, IP address, mask, network element state, is then saved in these information in the database of NM server.The MAC Address that the MAC Address of inquiry network element is about on network element reads in webmastering software, and MAC Address is kept in corresponding network management data storehouse.The LLDP function that network element is set on webmastering software is enabled state, is issued on network element, and the LLDP function on network element is opened.
After above-mentioned configurations completes, the net element information of the reported by network elements that the receiver module of NM server will receive; Computing module can calculate according to described net element information enforcement link data, and forms a real-time link tables of data; Comparing module, by the historical link tables of data of described real-time link tables of data and memory module storage is compared, obtains comparison result; Presenting module can present described comparison result.
Preferably, before the receiver module of described NM server receives the net element information of whole reported by network elements, user can arrange a timing parameters, controls the time range that receives the whole network reported by network elements net element information, and timing parameters comprises the term of validity, period and cycle.
For example: the timing parameters that receiver module is set is: the term of validity is from June 30,1 day to 2012 January in 2012; Period arranged by 0-23 period every day, can be set to finish since 20 o'clock by 23 o'clock; The time interval of cycle for receiving, 30 minutes.So described NM server can be on June 30,1 day to 2012 January in 2012, finish every day since 20 o'clock by 23 o'clock, every 30 minutes, receive the net element information of whole reported by network elements, by calculating real-time link data message, and form real-time link tables of data, real-time link tables of data and historical link tables of data are compared, obtain comparison result, finally by presenting module, present.
Preferably, when presenting comparison result, the real-time link tables of data that described computing module can also be calculated shows by the mode that topology connects, and facilitates user to understand the link change situation between real-time link connection and network element between network element simultaneously.
Simultaneously, should be taken into account that the main purpose of comparing is to know which variation has occurred the link connection situation between network element, be that comparison result only need to be recorded in historical link tables of data and link data different in real-time link tables of data, therefore the link data, recording in described comparison result is:
The link data of unique link in described historical link tables of data and described real-time link tables of data.
For example: the link in the historical link tables of data of described NM server storage comprises: link A-B and link C-D, link in the real-time link tables of data obtaining by computing module comprises: link A-B and link E-F, comparison result only need to record the link data of link C-D, link E-F so.
Simultaneously, can further distinguish unique link in historical link tables of data and real-time link tables of data, therefore, in described historical link tables of data and described real-time link tables of data, unique link comprises the link of the first kind and/or the link of Second Type, wherein:
In the link data table of the two ends of the link of the first kind in described historical link tables of data and described real-time link tables of data, there is no record;
All there is record at least one end of the link of Second Type in described historical link tables of data and described real-time link tables of data.
To in historical link tables of data and real-time link tables of data, be divided into two classes by unique link, the both link ends of the first kind does not have record in a tables of data therein; All there is record at link one end of Second Type or two ends in two tables of data.
By described in historical link tables of data and real-time link tables of data unique link be divided into after the link of above-mentioned two types, corresponding comparison result is also divided into three kinds of situations: the first is the link that only includes the first kind; The second is the link that only includes Second Type; The third is that the link of the first kind and Second Type has.User can arrange as required, can only show the link of the first kind, also can only show the link of Second Type, can also show the link of the first kind and Second Type simultaneously.
For example: in the link data table of a link A-B in described historical link tables of data and described real-time link tables of data, there is no record, A-B link just belongs to the link of the first kind so;
And C in another link C-D end all has record in described historical link table and real-time link table, or C, D two ends all have record in described historical link table and real-time link table, and link C-D just belongs to the link of Second Type so;
If user is set to only show the link of the first kind, that presents the link A-B that module only presents the first kind; If user is set to show the link of Second Type, that presents the link C-D that module only presents Second Type; Certainly, if user is set to two types of links, show, presenting module can present link A-B together with link C-D simultaneously.
In addition, because a link data has comprised network element ID and the port-mark of both link ends, even if therefore there is network element consistent link in two ends in historical link tables of data with in enforcement link data table, as long as the port of any one end network element is different, so all should be considered as two different links, all belong to unique link in historical link tables of data and real-time link tables of data.
For example: in historical link tables of data and real-time link tables of data, all comprise link A-B, in historical link tables of data, first port of network element A is connected with second port of network element B, in real-time link tables of data, second of network element A port is connected with second port of network element B, link A-B in historical link tables of data and the link A-B in real-time link tables of data are different so, all belong to unique link in historical link tables of data and real-time link tables of data.
Simultaneously, should be taken into account that described NM server is to calculate real-time link data message by receiving the net element information that whole network elements report based on Link Layer Discovery Protocol function, further form real-time link tables of data, in the net element information reporting, may comprise and the network element of described network manager service management net element information that be connected, non-webmaster server admin, therefore, in described historical link tables of data and described real-time link tables of data, unique link also comprises the link of the 3rd type, wherein:
The two ends of the link of the 3rd type are all in described real-time link tables of data, and one end network element of link is the network element of described network manager service management, and the other end network element of link is not the network element of described network manager service management.
For example: a network manager service management A, B, C, tetra-network elements of D, the network element being connected with A being reported by network element A comprises B and E, can obviously find out the network element that network element B is described network manager service management, but network element E does not belong to the network element of described network manager service management, the link A-E in real-time link table just belongs to the link of the 3rd type so.
, can also further classify to the link of the described first kind, the link of the described first kind is specifically also divided into the link that increases the link of subtype and delete subtype meanwhile, wherein:
The two ends that increase the link of subtype do not have record in described historical link tables of data;
The two ends of deleting the link of subtype do not have record in described real-time link tables of data.
For example: link A-B and link C-D are the link of the first kind, different is that link A-B does not have record in historical link tables of data, link C-D does not have record in real-time link tables of data, link A-B belongs to the increase subtype link in first kind link so, and link C-D belongs to the deletion subtype link in first kind link.
In obtaining the process of comparison result, if the link information existing in real-time network data information, with regard to needing continuation and the historical link tables of data in NM server, carry out cycle detection, if the two ends port that link detected not in historical link tables of data, the increase subtype link that is the first kind by this class link identification; If the link information only existing in historical link tables of data, will continue to compare with real-time link tables of data, whether the two ends port that checks link does not exist in real-time link tables of data, the deletion subtype link that is if there is no the first kind by this class link identification; If one end of link all exists in real-time link tables of data and historical link tables of data, but the other end of link detects respectively in two tables, testing result shows that the data message of two tables is inconsistent, the link that to need this link identification be Second Type.If one end of link belongs to the network element in network management data storehouse, that is to say that this network element is the network element in NM server range of management, the other end of link detects and obtains existing in real-time link tables of data, but there is not the network element port in network management data storehouse, not the network element in NM server range of management, identify the link that this link is the 3rd type.
Meanwhile, preferably, when presenting comparison result, the display mode that can set in advance according to the user of NM server shows, therefore, as shown in Figure 2, the NM server shown in Fig. 1 also comprises:
Show module is set, for user, display mode is arranged;
The first display module, shows for the display mode that module arranges is set according to described demonstration link data and the Linktype that comparison obtains.
For example: it is form that the user of NM server arranges display mode, the first display module will obtain comparison so link data and Linktype show by form.
The display mode that user arranges is varied, at this, does not describe in detail one by one.
Meanwhile, preferably, in described comparing module, obtained comparison result, and by described present module and present after, user can be according to the Linktype the presenting demonstration that refreshes the topology respectively, therefore, as shown in Figure 3, the network manager service implement body shown in Fig. 1 also comprises:
Acquisition module, the first Linktype of selecting for obtaining user;
Determination module, for the link data from described comparison result record, selecting Linktype is the link data of described the first Linktype;
Update module, for utilizing the link data of selection, upgrades the historical link tables of data of described memory module storage;
The second display module, for the link data of the historical link tables of data with after topological connected mode display update.
Described acquisition module is selected first Linktype that will upgrade for obtaining user, determination module can be from the link data of comparison result record, select Linktype to want the link data of the first Linktype of renewal for user, the link data that update module utilization is selected upgrades historical link tables of data, and the mode being connected with topology by the second display module shows.
Preferably, described the second display module can also show the link data of renewal, and facilitating user to see more intuitively specifically has which that the link upgrading has occurred.
Meanwhile, no matter user selects to upgrade the link of which kind of type, described NM server all will be updated to real-time link tables of data in memory module, to compare with new real-time link table next time.
Here to the update mode of dissimilar link, be different, link to the first kind, be there is no record in the link data table in described historical link tables of data and described real-time link tables of data of the two ends of link, when doing renewal processing, to further distinguish and increase subtype link or delete subtype link, increase subclass link when upgrading, add this class link connection in historical link tables of data, delete subclass link when upgrading, this part link of historical link tables of data need to be deleted.
For example: link A-B belongs to increases subtype link, in historical link tables of data, there is no record, upgrade and link A-B is increased in described historical link tables of data while processing; Link C-D belongs to deletion subtype link, in real-time link tables of data, there is no record, upgrades while processing and link C-D is deleted from described historical link tables of data.
Link to Second Type, all there is record at least one end that is link in described historical link tables of data and described real-time link tables of data, when upgrading, should to the link of Second Type in historical link tables of data, do change according to the link of the Second Type in real-time link tables of data and process.
For example: the link in historical link tables of data comprises: link A-C, link in real-time link tables of data comprises: link A-B, link C-D, by comparing, determine that link A-C, link A-B, link C-D are the link of Second Type so, when upgrading, will to the link of Second Type in historical link tables of data, do change according to the link of the Second Type in real-time link etc. and process, the link A-C being about in historical link tables of data changes to link A-B, link C-D.
Link to the 3rd type, be that the two ends of link are all in described real-time link tables of data, one end network element of link is the network element of described network manager service management, the other end network element of link is not the network element of described network manager service management, when doing renewal processing, if also comprise the link of other Second Types in real-time link tables of data, just should guarantee the link of the 3rd type can not added in historical link tables of data; If do not comprise any other Second Type link in real-time link tables of data, just should in described historical link tables of data, delete one end network element having comprised in the 3rd type link is the link of the network element of described network manager service management.
For example: the link in link historical link tables of data comprises: link A-B, link A-C, link B-D, link in real-time link tables of data comprises: link C-D, link A-I, wherein network element A, B, C, D are the network element of network manager service management, determine that comparison result is the link that link A-B, link A-C, link B-D, link C-D are Second Type, link A-I is the link of the 3rd type, when the 3rd type link being done to renewal processing, do not need historical link tables of data to change so.
Again for example: the link in link historical link tables of data comprises: link A-B, link A-C, link in real-time link tables of data comprises: link A-I, NM server managed network element A, B and C, now when doing renewal processing, just should delete and in historical link tables of data, delete the whole links that comprised network element A, from historical link tables of data, delete link A-B and link A-C.
Certainly, in the actual process that presents comparison result, can as required the on all four link of comparison result in historical link tables of data and real-time link tables of data also be shown and be identified, so that user sees more intuitively the link of real-time link tables of data and compares with the link in historical link tables of data, which link does not change, there is change in which link, and the link that occurs to change specifically belongs to the link of which kind of type.When classifying, updating historical link tables of data, user does not need the on all four link of comparison result in historical link tables of data and real-time link tables of data to upgrade.
In addition, the embodiment of the present invention provides the comparison method of link discovery, for NM servers of at least managing two above network elements, as shown in Figure 4, comprising:
Simultaneously, should be taken into account that the main purpose of comparing is to know which variation has occurred the link connection situation between network element, be that comparison result only need to be recorded in historical link tables of data and link data different in real-time link tables of data, therefore the link data, recording in described comparison result is:
The link data of unique link in described historical link tables of data and described real-time link tables of data.
Simultaneously, consider and can further distinguish unique link in historical link tables of data and real-time link tables of data, therefore, in described historical link tables of data and described real-time link tables of data, unique link comprises the link of the first kind and/or the link of Second Type, wherein:
In the link data table of the two ends of the link of the first kind in described historical link tables of data and described real-time link tables of data, there is no record;
All there is record at least one end of the link of Second Type in described historical link tables of data and described real-time link tables of data.
To in historical link tables of data and real-time link tables of data, be divided into two classes by unique link, the both link ends of the first kind does not have record in a tables of data therein; All there is record at link one end of Second Type or two ends in two tables of data.
By described in historical link tables of data and real-time link tables of data unique link be divided into after the link of above-mentioned two types, corresponding comparison result is also divided into three kinds of situations: the first is the link that only includes the first kind; The second is the link that only includes Second Type; The third is that the link of the first kind and Second Type has.
Simultaneously, should be taken into account that described NM server is to calculate real-time link data message by receiving the net element information that whole network elements report based on Link Layer Discovery Protocol function, further form real-time link tables of data, in the net element information reporting, may comprise and the network element of described network manager service management net element information that be connected, non-webmaster server admin, therefore, in described historical link tables of data and described real-time link tables of data, unique link also comprises the link of the 3rd type, wherein:
The two ends of the link of the 3rd type are all in described real-time link tables of data, and one end network element of link is the network element of described network manager service management, and the other end network element of link is not the network element of described network manager service management.
, can also further classify to the link of the described first kind, the link of the described first kind is specifically also divided into the link that increases the link of subtype and delete subtype meanwhile, wherein:
The two ends that increase the link of subtype do not have record in described historical link tables of data;
The two ends of deleting the link of subtype do not have record in described real-time link tables of data.
, consider when presenting comparison result, the display mode that can set in advance according to the user of NM server shows meanwhile, and therefore, as shown in Figure 5, shown in Fig. 4, the comparison method of described a kind of link discovery specifically also comprises:
Meanwhile, consider in described comparing module and obtained comparison result, and by described present module and present after, user can be according to the Linktype the presenting demonstration that refreshes the topology respectively, therefore, as shown in Figure 6, the comparison method of a kind of link discovery shown in Fig. 4 specifically also comprises:
Certainly, in the actual process that presents comparison result, can as required the on all four link of comparison result in historical link tables of data and real-time link tables of data also be shown and be identified, so that user sees more intuitively the link of real-time link tables of data and compares with the link in historical link tables of data, which link does not change, there is change in which link, and the link that occurs to change specifically belongs to the link of which kind of type.When classifying, updating historical link tables of data, user does not need the on all four link of comparison result in historical link tables of data and real-time link tables of data to upgrade.
Below in conjunction with reality, the process of whole chain-link automatic finding is elaborated.
One network manager service management A, B, C, D, E, F, G, eight network elements of H, the historical link tables of data of storing in memory module comprises: link A-B, link C-D and link E-F;
The net element information of eight reported by network elements that receiver module receives, computing module, by having calculated real-time link tables of data, comprising: link A-B, A-C, A-M, C-D and link G-H; Comparing module is compared real-time link table and historical link table, obtains the link data of unique link in described historical link tables of data and described real-time link tables of data, for: link E-F, link A-C, link A-M and link G-H.Its link A-B is consistent with link C-D in two link data tables, there is no need as comparison result shows.
Comparison result is further being classified, determining the link that link E-F and link G-H are the first kind, in the link data table of both link ends in described historical link tables of data and described real-time link tables of data, there is no record;
Determine the link that link A-C and link A-M are Second Type, network element A and C all have record in described historical link tables of data and described real-time link tables of data;
Further determine that again link A-M is the link of the 3rd type, one end network element A of link is the network element of described network manager service management, and the other end network element M of link is not the network element of described network manager service management;
Can further to the link of the first kind, classify again, determine that link E-F is for deleting subtype link, link G-H is for increasing subtype link;
Last comparison result is: the link of the deletion subtype that link E-F is the first kind, and the link of the increase subtype that link G-H is the first kind, the link that link A-C is Second Type, link A-M is the link of the 3rd type;
It is form that the user of NM server arranges display mode, and the first display module shows last comparison result by form so;
User selects deletion subtype and the Second Type of the first kind to upgrade, acquisition module can get user and select the type of upgrading, it is the deletion subtype of the first kind and the link of Second Type that determination module can be selected Linktype in comparison result, be link E-F and link A-C, update module utilizes link E-F and link A-C to upgrade historical link table, link table after renewal comprises: link A-C and link C-D, the second display module can show link A-C and link C-D by the form that topology connects.
The NM server that the present embodiment provides and chain-link automatic finding method, can, between acquisition network element in real-time link connection, present link-attached situation of change; The calculating of the chain-link automatic finding of the whole network network element is placed on NM server, has alleviated the computation burden of single network element, thereby improved the robustness of the network operation; Can need to display mode be set to comparison result according to user, increase friendly; The Linktype that can select according to user, classification refreshes Topology display.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. a NM server, at least manages plural network element, it is characterized in that, comprising:
Memory module, for storing a historical link tables of data;
Receiver module, the net element information reporting based on Link Layer Discovery Protocol function for receiving whole network elements of described network manager service management;
Computing module, calculates real-time link data message for the net element information receiving according to described receiver module, and forms a real-time link tables of data by described real-time link data message;
Comparing module, for the link data information of described historical link tables of data and described real-time link tables of data is compared, obtains comparison result;
Present module, for presenting described comparison result.
2. a kind of NM server as claimed in claim 1, is characterized in that, the link data recording in described comparison result is:
The link data of unique link in described historical link tables of data and described real-time link tables of data.
3. a kind of NM server as claimed in claim 2, is characterized in that, in described historical link tables of data and described real-time link tables of data, unique link comprises the link of the first kind and/or the link of Second Type, wherein:
In the link data table of the two ends of the link of the first kind in described historical link tables of data and described real-time link tables of data, there is no record;
All there is record at least one end of the link of Second Type in described historical link tables of data and described real-time link tables of data.
4. a kind of NM server as claimed in claim 3, is characterized in that, in described historical link tables of data and described real-time link tables of data, unique link also comprises the link of the 3rd type, wherein:
The two ends of the link of the 3rd type are all in described real-time link tables of data, and one end network element of link is the network element of described network manager service management, and the other end network element of link is not the network element of described network manager service management.
5. a kind of NM server as claimed in claim 3, is characterized in that, the link of the described first kind is specifically also divided into the link that increases the link of subtype and delete subtype, wherein:
The two ends that increase the link of subtype do not have record in described historical link tables of data;
The two ends of deleting the link of subtype do not have record in described real-time link tables of data.
6. a kind of NM server as described in claim 3,4 or 5, is characterized in that, the described module that presents specifically comprises:
Show module is set, for user, display mode is arranged;
The first display module, shows for the display mode that module arranges is set according to described demonstration link data and the Linktype that comparison obtains.
7. a kind of NM server as described in claim 3,4 or 5, is characterized in that, also comprises:
Acquisition module, the first Linktype of selecting for obtaining user;
Determination module, for the link data from described comparison result record, selecting Linktype is the link data of described the first Linktype;
Update module, for utilizing the link data of selection, upgrades the historical link tables of data of described memory module storage;
The second display module, for the link data of the historical link tables of data with after topological connected mode display update.
8. a comparison method for link discovery, for NM servers of at least managing two above network elements, is characterized in that, comprising:
Receive the net element information that whole network elements of described network manager service management report based on Link Layer Discovery Protocol function;
According to the net element information receiving, calculate real-time link data message, and form a real-time link tables of data by described real-time link data message;
Link data information in pre-stored historical link tables of data and described real-time link tables of data is compared, obtain comparison result;
Present described comparison result.
9. the comparison method of link discovery as claimed in claim 8, is characterized in that, the link data recording in described comparison result is:
The link data of unique link in described historical link tables of data and described real-time link tables of data.
10. the comparison method of link discovery as claimed in claim 9, is characterized in that, in described historical link tables of data and described real-time link tables of data, unique link comprises the link of the first kind and/or the link of Second Type, wherein:
In the link data table of the two ends of the link of the first kind in described historical link tables of data and described real-time link tables of data, there is no record;
All there is record at least one end of the link of Second Type in described historical link tables of data and described real-time link tables of data.
The comparison method of 11. link discoveries as claimed in claim 10, is characterized in that, in described historical link tables of data and described real-time link tables of data, unique link also comprises the link of the 3rd type, wherein:
The two ends of the link of the 3rd type are all in described real-time link tables of data, and one end network element of link is the network element of described network manager service management, and the other end network element of link is not the network element of described network manager service management.
The comparison method of 12. link discoveries as claimed in claim 10, is characterized in that, the link of the described first kind is specifically also divided into the link that increases the link of subtype and delete subtype, wherein:
The two ends that increase the link of subtype do not have record in described historical link tables of data;
The two ends of deleting the link of subtype do not have record in described real-time link tables of data.
The comparison method of 13. link discoveries as described in claim 10,11 or 12, is characterized in that, the described described comparison result that presents specifically comprises:
User arranges display mode;
According to the display mode arranging, show link data and the Linktype that comparison obtains.
The comparison method of 14. link discoveries as described in claim 10,11 or 12, is characterized in that, also comprises:
Obtain the first Linktype that user selects;
From the link data of described comparison result record, selecting Linktype is the link data of described the first Linktype;
Utilize the link data of selecting, described historical link tables of data is upgraded;
Link data with the historical link tables of data after topological connected mode display update.
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