CN101674665B - Wireless transmission interface building method and wireless transmission network element - Google Patents

Abstract

Translated fromChinese

本发明实施例提供一种无线传输接口建立方法和无线传输网元，上述方法包括：获取对端网元的IP列表；根据上述IP列表配置与上述对端网元的传输链路参数；根据上述传输链路参数建立与上述对端网元的传输链路。上述无线传输网元包括：获取单元，用于获取对端网元的IP列表；参数配置单元，用于根据上述IP列表配置与上述对端网元的传输链路参数；传输链路单元，用于根据上述传输链路参数建立与上述对端网元的传输链路。本发明实施例传输链路参数配置实现简单，与现有技术手工配置相比，通过IP列表自动配置与对端网元的传输链路参数，可以减轻人工规划工作量。

Embodiments of the present invention provide a method for establishing a wireless transmission interface and a wireless transmission network element. The method includes: obtaining an IP list of a peer network element; configuring transmission link parameters with the peer network element according to the IP list; The transmission link parameter establishes a transmission link with the above-mentioned peer network element. The above-mentioned wireless transmission network element includes: an acquisition unit for obtaining an IP list of the peer network element; a parameter configuration unit for configuring transmission link parameters with the above-mentioned peer network element according to the above IP list; a transmission link unit for To establish a transmission link with the above-mentioned peer network element according to the above-mentioned transmission link parameters. The configuration of the transmission link parameters in the embodiment of the present invention is simple to implement. Compared with the manual configuration in the prior art, the automatic configuration of the transmission link parameters with the peer network element through the IP list can reduce the workload of manual planning.

Description

A kind of wireless transmission interface building method and wireless transmission network element

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of wireless transmission interface building method and wireless transmission network element.

Background technology

UMTS (Universal Mobile Telecommunications System; UMTS) in the system, interface is the IUB interface between NodeB (base station) and the RNC (Radio Network Controller, radio network controller); LTE (Long Term Evolution; Long Term Evolution) in the system, base station eNodeB (evolution base station) and MME (Mobility Management Entity, mobile management entity)/SGW (Serving Gateway; Gateway) interface between is the S1 interface, and the interface between the base station is an X2 interface: between the IUB interface or the agreement between S1 interface and X2 interface comprise signaling surface protocol and user plane protocol.

Signaling surface protocol can be SCTP (Stream Control Transmission Protocol; SCTP) agreement; User plane protocol can be UDP (User Datagram Protocol, UDP) agreement or GTPU (GPRS Tunnel Protocol user plane).

In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem: current, the transmission link parameter that need dispose for the coffret between network element mainly comprises address information and office direction information, and is through the human configuration address information at present; As: { opposite end IP, Peer-Port, local terminal IP; The local terminal port } and office direction information { signaling link numbering, local terminal IP}; Because need manual work to set up each incidence relation, thus there is redundant human configuration, and after relation is fixed up between the network element; Also need the adjacent transmission information of manual maintenance, the system that makes realizes more complicated, and the planning amount is bigger.

Summary of the invention

The embodiment of the invention provides a kind of wireless transmission interface building method and wireless transmission network element, realizes simply can alleviating the artificial planning workload.

On the one hand, the embodiment of the invention provides a kind of wireless transmission interface building method, and said method comprises: the IP tabulation of obtaining the opposite end network element; Said IP tabulation comprises: signaling plane IP tabulation, user plane IP tabulation; Said signaling plane IP tabulation comprises the port of opposite end network element, the IP address of opposite end network element, the sign of opposite end network element; Said user plane IP tabulation comprises the IP address of opposite end network element and the sign of opposite end network element; Transmission link parameter according to above-mentioned IP list configuration and above-mentioned opposite end network element; According to the transmission link of above-mentioned transmission link parameter foundation with above-mentioned opposite end network element.

On the other hand, the embodiment of the invention provides a kind of wireless transmission network element, and above-mentioned wireless transmission network element comprises: acquiring unit, the IP tabulation that is used to obtain the opposite end network element; Said IP tabulation comprises: signaling plane IP tabulation, user plane IP tabulation; Said signaling plane IP tabulation comprises the port of opposite end network element, the IP address of opposite end network element, the sign of opposite end network element; Said user plane IP tabulation comprises the IP address of opposite end network element and the sign of opposite end network element; Parameter configuration unit is used for the transmission link parameter according to above-mentioned IP list configuration and above-mentioned opposite end network element; Transmission link units is used for according to the transmission link of above-mentioned transmission link parameter foundation with above-mentioned opposite end network element.

Technique scheme has following beneficial effect: because adopt the IP tabulation of obtaining the opposite end network element; Transmission link parameter according to above-mentioned IP list configuration and above-mentioned opposite end network element; According to the technological means of above-mentioned transmission link parameter foundation with the transmission link of above-mentioned opposite end network element; So the transmission link parameter configuration realizes simple; Compare with the prior art manual configuration,, can alleviate the artificial planning workload through the transmission link parameter of the automatic configuration of IP tabulation with the opposite end network element.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is a kind of wireless transmission interface building method of embodiment of the invention schematic flow sheet;

Fig. 2 is an embodiment of the invention application scenarios sketch map;

Fig. 3 is the method flow sketch map of the embodiment of the invention based on Fig. 2;

Fig. 4 is a kind of wireless transmission network element of embodiment of the invention structural representation;

Fig. 5 is the another kind of wireless transmission network element of an embodiment of the invention structural representation;

Fig. 6 sets up schematic flow sheet for embodiment of the invention signaling link.

Embodiment

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

Embodiment one:

As shown in Figure 1, be a kind of wireless transmission interface building method of embodiment of the invention schematic flow sheet, said method comprises:

101, obtain the IP tabulation of opposite end network element;

102, according to the IP list configuration of above-mentioned opposite end network element and the transmission link parameter of above-mentioned opposite end network element;

103, according to the transmission link of above-mentioned transmission link parameter foundation with above-mentioned opposite end network element.

Optional, above-mentioned IP tabulation of obtaining the opposite end network element comprises: the IP tabulation that can obtain the opposite end network element from one of following opposite end network element: gateway, base station, network management server NMS, domain name resolution server DNS, radio network controller (RNC), dynamic host configuration protocol DHCP server, mobile management entity MME.This paper obtains the mode of the IP tabulation of opposite end network element; Can be to receive the message that comprises the IP tabulation that the opposite end network element sends; Perhaps after request message is obtained in network element transmission in opposite end, obtain through the opposite end network element feedback message that receives, the embodiment of the invention is not as limit.The above-mentioned IP tabulation can comprise: signaling plane IP tabulation, user plane IP tabulation; Said signaling plane IP tabulation comprises the port of opposite end network element, the IP address of opposite end network element, the sign of opposite end network element; Said user plane IP tabulation comprises the IP address of opposite end network element and the sign of opposite end network element.If above-mentioned IP tabulation is tabulated for signaling plane IP, then can: according to the signaling plane transmission link parameter of above-mentioned signaling plane IP list configuration and above-mentioned opposite end network element; According to the signaling plane transmission link of above-mentioned signaling plane transmission link parameter foundation with above-mentioned opposite end network element.If above-mentioned IP tabulation is tabulated for user plane IP, then can: according to the user plane transmission link parameter of above-mentioned user plane IP list configuration and above-mentioned opposite end network element; According to the user plane transmission link of above-mentioned user plane transmission link parameter foundation with above-mentioned opposite end network element.Before setting up transmission link, said method can also comprise: according to the office direction information of above-mentioned signaling plane IP tabulation or local network element of above-mentioned user plane IP list configuration and above-mentioned opposite end network element.

Optional, if the IP of above-mentioned opposite end network element tabulation is a plurality of IP address, after the then above-mentioned IP that obtains the opposite end network element tabulated, said method can also comprise: detect from the above-mentioned IP tabulation through accessibility and obtain the IP tabulation that can reach; Obtain the IP tabulation of mating from the above-mentioned IP tabulation that reaches, then according to above-mentioned and the IP list configuration of local terminal network element coupling and the transmission link parameter of above-mentioned opposite end network element with the local terminal network element.

Said method embodiment technical scheme of the present invention is because adopt the IP tabulation of obtaining the opposite end network element; Transmission link parameter according to above-mentioned IP list configuration and above-mentioned opposite end network element; According to the technological means of above-mentioned transmission link parameter foundation with the transmission link of above-mentioned opposite end network element; So the transmission link parameter configuration realizes simple; Compare with the prior art manual configuration,, can alleviate the artificial planning workload through the transmission link parameter of the automatic configuration of IP tabulation with the opposite end network element.

Embodiment two:

For the situation of single IP address, each network element is only safeguarded single IP address, two kinds of scenes: single signaling plane IP address+single user plane IP address; Perhaps signaling plane IP and user plane IP are combined into an IP address; If this is combined into one situation, then signaling plane IP is identical with user plane IP, below describes with first kind of situation; Second kind of situation is similar, no longer repeats to set forth.

Scheme is following: the IP tabulation of obtaining the opposite end network element; Transmission link parameter according to above-mentioned IP list configuration and above-mentioned opposite end network element; According to the transmission link of above-mentioned transmission link parameter foundation with above-mentioned opposite end network element.

Like this, the relation of network element just is mapped as the relation of IP address, is example with eNodeB and SGW/MME, under single signaling plane IP address+single user plane IP address situation:

{ opposite end IP, Peer-Port, local terminal IP, the local terminal port } of signaling plane={ eNodeB signaling plane IP address, eNodeB signaling port, MME IP address, MME Peer-Port }

{ opposite end IP, Peer-Port, local terminal IP, the local terminal port } of user plane={ eNodeB IP address, SGW IP address }

Office direction table { signaling link numbering, local terminal IP address }={ according to the signaling index that the signaling plane relation table generates, local terminal user plane IP}

For example, stream control transmission protocol (sctp) is a kind of agreement of transmitting a plurality of data flow between the two ends simultaneously that connects at network.SCTP claims " TCP of future generation " or TCPng sometimes, and it is designed at supporting telephone on the internet and connects, and phone connection request voice and other data and signaling information send simultaneously.What only need preservation is single IP address, sets up the Cheng Qian at interface, obtains the IP address table of adjacent network element, signaling plane IP list{IP address, IP port }, user plane IP list{IP address }, just can set up coffret automatically.Obtaining the method for IP tabulation, can be from gateway, DNS Server, and DHCP Server, the perhaps network element in the system (for example obtaining adjacent bast station list) from MME, the embodiment of the invention is not as limit.

The embodiment of the invention is planned transmission relation automatically, only need know the network element relation, reduces user's planning, realizes that simply application scenarios is more.

Embodiment three:

Equipment of embodiment of the invention support is supported a plurality of IP address, comprises signaling plane IP and user plane IP.Network element only need dispose local signaling plane IP and user plane IP and get final product.

Before setting up, obtain signaling plane IP List and user plane IP list at coffret, acquisition methods can be from gateway, DNS, DHCP Server, other network element etc.

For example, the signaling plane IP List{CIP1 that obtains, port one, CIP2, port 2, CIP3, port 3 ..., network element ID (optional) };

User plane IP List{UIP1, UIP2 ..., network element ID }.

ENodeB itself has only the signaling plane IP and the user plane IP address of local terminal; Set up signaling and service channel between hope and the opposite end eNodeB; Need to obtain the relevant information of opposite end eNodeB; Be exactly signaling plane IPList and user plane IP List, also can obtain signaling plane IP List or user plane IP List separately, but ordinary circumstance need be obtained all.As shown in Figure 2, be embodiment of the invention application scenarios sketch map.As shown in Figure 3, for the method flow sketch map of the embodiment of the invention, comprise the steps: based on Fig. 2

301, local terminal eNodeB is to NMS/MME acquisition request opposite end eNodeB information, and eNodeB sign in opposite end is obtained through ANR (Automatic Neighboring Relation) algorithm;

302, NMS/MME obtains the IP table data to opposite end eNodeB;

303, NMS/MME issues local terminal eNodeB to signaling plane IP list and user plane IP list;

304, local terminal eNodeB sets up signaling and service channel according to following step.

For example, local terminal eNodeB (suppose that IP list own is LocalIP1, LocalIP2) obtain adjacent network element IP list (CIP1, CIP2 CIP3), need following steps to set up signalling path:

3041, signaling plane is found automatically: as shown in Figure 6, set up schematic flow sheet for embodiment of the invention signaling link, and comprise the steps:

601, obtain CIP1, CIP2, CIP3;

602, accessibility is judged, judges CIP1, CIP2, and whether CIP3 can reach on the route level, has only and can reach, and could set up the SCTP link, if then changestep 603; Otherwise get intostep 609;

The determination methods that accessibility is judged is that PING detects, and can carry out the PING operation from local terminal eNodeB, and purpose IP is CIP1, CIP2, and CIP3 is if normal returned packet just representes that this IP can reach.Except PING detects, the accessibility detection scheme also has a lot, for example supports the BFD (two-way forwarding detection) etc. under the dynamic routing situation;

603, through the accessibility continuity testing, the IP set that acquisition can reach, CIP1 for example, CIP2;

604, get into matching process;

If 605 can reach and certainly exist relevant route table items, search purpose IP through route table items and whether mate CIP1 or CIP2; Promptly whether there is the corresponding relation between coupling LocalIP and CIP1 or the CIP2; If then changestep 606; Otherwise, changestep 609.

606, find the coupling list item, mate;

For example suppose CIP1=10.121.22.110, CIP2=10.121.23.1, LocalIP1=17.10.1.2, LocalIP1MASK=255.255.255.0, LocalIP2=17.10.2.3, there is route table items in LocalIP2MASK=255.255.255.0:

DIP?10.121.22.00MASK?255.255.255.0NEXTHOPIP?17.10.1.12

According to DIP/MASK and CIP1, the CIP2 coupling:

DIP&MASK＝CIP?1&MASK，DIP&MASK≠CIP2&MASK，

Simultaneously, relatively the NEXHOPIP&LocalIPMASK=LocalIP1&LocalIP1MASK of this route table items obtains CIP1 and LocalIP1 is a Match IP.

607, judge whether to mate successfully, if then get intostep 611; Otherwise, get intostep 608;

608, judge whether loopback interface IP:, changestep 610 if the IP address is loopback interface IP address among the IP List; Otherwise,, then changestep 609 if the IP address is not loopback interface IP address among the IP List;

609, process is ended;

610, optional IP address is mated and is got final product from loopback interface IP address.And if between network element, have many SCTP, select whether to carry out many ownership and attempt.The SCTP type is judged, judges UMTS NBAP for example, LTE X1AP, S1AP signaling etc. through high-level signaling;

611, set up the SCTP coupling;

612, set up signaling link.

3042, user plane is found automatically

User plane IP List through receiving carries out following steps:

1) reachability test: opposite end IP is carried out reachability test, for example find that { UIP} can reach, and method is the same; The effect of opposite end IP: scene 1: the BEARER (link bearer) that initiates in the opposite end sets up process, can comprise the opposite end IP of distribution, if find that this IP address is unreachable, and then direct feeding back unsuccessful; Scene 2: if in the running, find that the IP address of certain network element is unreachable, then obtain the IP table data again;

2) matching process, similar signaling plane is handled, and { opposite end IP, local terminal IP} address is right in formation.

3043, unattended station is to discovery

1) obtain signalling path corresponding net element sign:

Method 1: set up signalling path,, obtained the opposite end network element ID through protocol interaction, the S1SETUP among the S1AP (foundation) signaling for example,

Method 2: this sign also can be through the Optional Field (Optional) among the signaling plane IP List: " network element ID " obtains.

For example set up the SCTP link, be designated SCTP1, corresponding net element is designated eNodeB1.

2) active user face IP " network element ID " in the user plane tabulation: { UIP1, eNodeB1}; ,

3) utilize step 1) and step 2) the network element ID coupling that obtains, obtain office direction information table { signaling link numbering, local terminal IP address }={ SCTP1, UIP1}.

The beneficial effect that embodiment of the invention technical scheme is brought: proposed the method that the wireless transmission interface is set up automatically, realized simply relatively, alleviated the artificial planning workload, solved many IP scene, universality is good.

Embodiment four:

Corresponding to said method embodiment, as shown in Figure 4, be a kind of wireless transmission network element of embodiment of the invention structural representation, above-mentioned wireless transmission network element comprises:

Acquiringunit 401, the IP tabulation that is used to obtain the opposite end network element;

Parameter configuration unit 402 is used for the transmission link parameter according to above-mentioned IP list configuration and above-mentioned opposite end network element;

Transmission link units 403 is used for according to the transmission link of above-mentioned transmission link parameter foundation with above-mentioned opposite end network element.

Optional; Above-mentioned acquiringunit 401 is further used for obtaining from one of following opposite end network element the IP tabulation of opposite end network element: gateway, base station, network management server NMS, domain name resolution server DNS, radio network controller (RNC), dynamic host configuration protocol DHCP server, mobile management entity MME.The above-mentioned IP tabulation can comprise: signaling plane IP tabulation, user plane IP tabulation; Said signaling plane IP tabulation comprises the port of opposite end network element, the IP address of opposite end network element, the sign of opposite end network element; Said user plane IP tabulation comprises the IP address of opposite end network element and the sign of opposite end network element.

Optional, if the above-mentioned IP tabulation is signaling plane IP tabulation, then: above-mentionedparameter dispensing unit 402 is further used for the signaling plane transmission link parameter according to above-mentioned signaling plane IP list configuration and above-mentioned opposite end network element; Above-mentionedtransmission link units 403 is further used for according to the signaling plane transmission link of above-mentioned signaling plane transmission link parameter foundation with above-mentioned opposite end network element.If above-mentioned IP tabulation is tabulated for user plane IP, then: above-mentionedparameter dispensing unit 402, further according to the user plane transmission link parameter of above-mentioned user plane IP list configuration and above-mentioned opposite end network element; Above-mentionedtransmission link units 403 is further used for according to the user plane transmission link of above-mentioned user plane transmission link parameter foundation with above-mentioned opposite end network element.

Optional; As shown in Figure 5; Be the another kind of wireless transmission network element of embodiment of the invention structural representation, above-mentioned wireless transmission network element can also comprise: officedirection dispensing unit 404 except that comprising above-mentioned three unit; Be used for before setting up transmission link, according to the office direction information of above-mentioned signaling plane IP tabulation or local network element of above-mentioned user plane IP list configuration and above-mentioned opposite end network element.Above-mentioned wireless transmission network element can also comprise: detectingunit 405, be a plurality of IP address if be used for the IP tabulation of above-mentioned opposite end network element, and then after the above-mentioned IP that obtains the opposite end network element tabulates, obtain the IP tabulation that can reach from the above-mentioned IP tabulation through the accessibility detection; Matchingunit 406 is used for obtaining the IP tabulation of mating with the local terminal network element from the above-mentioned IP tabulation that reaches; Above-mentionedtransmission link units 403 is further used for according to above-mentioned and the IP list configuration of local terminal network element coupling and the transmission link parameter of above-mentioned opposite end network element.

Said apparatus embodiment technical scheme of the present invention comprises UMTS, and two kinds of standards of LTE are to other wireless standard; As long as signaling and user plane separation scene can adopt, its transmission link parameter configuration realizes simple; Compare with the prior art manual configuration,, can alleviate the artificial planning workload through the transmission link parameter of the automatic configuration of IP tabulation with the opposite end network element; In addition, the interface that can solve many IP scene is set up situation, and universality is good.

One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct related hardware to accomplish through program; Described program can be stored in the computer read/write memory medium; This program is when carrying out; Comprise above-mentioned all or part of step, described storage medium, as: ROM/RAM, disk, CD etc.

Above-described embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. a wireless transmission interface building method is characterized in that, said method comprises:

Obtain the IP tabulation of opposite end network element; Said IP tabulation comprises: signaling plane IP tabulation, user plane IP tabulation; Said signaling plane IP tabulation comprises the port of opposite end network element, the IP address of opposite end network element, the sign of opposite end network element; Said user plane IP tabulation comprises the IP address of opposite end network element and the sign of opposite end network element;

Transmission link parameter according to said IP list configuration and said opposite end network element;

According to the transmission link of said transmission link parameter foundation with said opposite end network element.

2. method according to claim 1 is characterized in that, said IP tabulation of obtaining the opposite end network element comprises:

Obtain the IP tabulation of opposite end network element from one of following opposite end network element: gateway, base station, network management server NMS, domain name resolution server DNS, radio network controller (RNC), dynamic host configuration protocol DHCP server, mobile management entity MME.

3. method according to claim 1 is characterized in that, if said IP tabulation tabulate for signaling plane IP, then:

Signaling plane transmission link parameter according to said signaling plane IP list configuration and said opposite end network element;

According to the signaling plane transmission link of said signaling plane transmission link parameter foundation with said opposite end network element.

4. method according to claim 1 is characterized in that, if said IP tabulation tabulate for user plane IP, then:

User plane transmission link parameter according to said user plane IP list configuration and said opposite end network element;

According to the user plane transmission link of said user plane transmission link parameter foundation with said opposite end network element.

5. like claim 3 or 4 said methods, it is characterized in that before setting up transmission link, said method also comprises:

Office direction information according to said signaling plane IP tabulation or local network element of said user plane IP list configuration and said opposite end network element.

6. method according to claim 1 is characterized in that, if the IP of said opposite end network element tabulation is a plurality of IP address, after the then said IP tabulation of obtaining the opposite end network element, said method also comprises:

Obtain the IP tabulation that can reach from said IP tabulation through the accessibility detection;

Obtain the IP tabulation of mating from the said IP tabulation that reaches, then with the local terminal network element

According to said and the IP list configuration of local terminal network element coupling and the transmission link parameter of said opposite end network element.

7. a wireless transmission network element is characterized in that, said wireless transmission network element comprises:

Acquiring unit, the IP tabulation that is used to obtain the opposite end network element; Said IP tabulation comprises: signaling plane IP tabulation, user plane IP tabulation; Said signaling plane IP tabulation comprises the port of opposite end network element, the IP address of opposite end network element, the sign of opposite end network element; Said user plane IP tabulation comprises the IP address of opposite end network element and the sign of opposite end network element;

Parameter configuration unit is used for the transmission link parameter according to said IP list configuration and said opposite end network element;

Transmission link units is used for according to the transmission link of said transmission link parameter foundation with said opposite end network element.

8. like the said wireless transmission network element of claim 7; It is characterized in that; Said acquiring unit is further used for obtaining from one of following opposite end network element the IP tabulation of opposite end network element: gateway, base station, network management server NMS, domain name resolution server DNS, radio network controller (RNC), dynamic host configuration protocol DHCP server, mobile management entity MME.

9. like the said wireless transmission network element of claim 7, it is characterized in that, if said IP tabulation is signaling plane IP tabulation, then:

Said parameter configuration unit is further used for the signaling plane transmission link parameter according to said signaling plane IP list configuration and said opposite end network element;

Said transmission link units is further used for according to the signaling plane transmission link of said signaling plane transmission link parameter foundation with said opposite end network element.

10. like the said wireless transmission network element of claim 7, it is characterized in that, if said IP tabulation is user plane IP tabulation, then:

Said parameter configuration unit is further according to the user plane transmission link parameter of said user plane IP list configuration and said opposite end network element;

Said transmission link units is further used for according to the user plane transmission link of said user plane transmission link parameter foundation with said opposite end network element.

11., it is characterized in that said wireless transmission network element also comprises like claim 9 or 10 said wireless transmission network elements:

The office direction dispensing unit was used for before setting up transmission link, according to the office direction information of said signaling plane IP tabulation or local network element of said user plane IP list configuration and said opposite end network element.

12., it is characterized in that said wireless transmission network element also comprises like the said wireless transmission network element of claim 7:

Detecting unit is a plurality of IP address if be used for the IP tabulation of said opposite end network element, then after the said IP that obtains the opposite end network element tabulates, obtains the IP tabulation that can reach from said IP tabulation through the accessibility detection;

Matching unit is used for obtaining the IP tabulation of mating with the local terminal network element from the said IP tabulation that reaches;

Said transmission link units is further used for according to said and the IP list configuration of local terminal network element coupling and the transmission link parameter of said opposite end network element.

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