CN102244687A - Method, device and system for acquiring multi-address message - Google Patents
Method, device and system for acquiring multi-address message Download PDFInfo
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Abstract
The invention discloses a method, device and system for acquiring a multi-address message, which belongs to the communication field and solves the problem that the communicating quality between a media gateway and a media gateway controller is influenced because the media gateway can only acquire one IP address corresponding to the media gateway controller through domain name resolution (DNS) and SCTP (Stream Control Transmission Protocol) coupling can not be established between the media gateway and the media gateway controller. The technical scheme of the invention comprises the steps of: receiving DNS request messages sent by the media gateway, obtaining more than two address messages corresponding to the media gateway controller according to the domain name of the media gateway controller, carried in the DNS request messages, and generating DNS response messages according to the more than two address messages, and sending the DNS response messages to the media gateway. The method, the device and the system for acquiring the multi-address message, which are provided by the invention, can be applied to communication between the media gateway and the media gateway controller.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of methods, devices and systems that obtain multiple-address message.
Background technology
At present, media gateway (Media Gateway, MG) can with Media Gateway Controller (MediaGateway Control, MGC) set up SCTP (Stream Control TransmissionProtocol, SCTP) coupling communicates by multiple communication links and Media Gateway Controller.Particularly, media gateway is obtained a plurality of IP address of Media Gateway Controller correspondence, and described a plurality of IP address is carried at sends to Media Gateway Controller in the initial message, Media Gateway Controller is according to setting up SCTP SCTP coupling between a plurality of IP address of carrying in the initial message and the media gateway, and a plurality of communication links and the media gateway set up by SCTP SCTP coupling in follow-up communication process communicate.
In the prior art, media gateway can be obtained the IP address of Media Gateway Controller correspondence by domain name mapping, yet, media gateway can only be obtained an IP address of Media Gateway Controller correspondence by domain name mapping, can't set up SCTP SCTP coupling between media gateway and the Media Gateway Controller, thereby influence the communication quality between media gateway and the Media Gateway Controller.
Summary of the invention
The embodiment of the invention provides the methods, devices and systems that obtain multiple-address message, in order to solve the IP address that media gateway can only be obtained the Media Gateway Controller correspondence in the prior art by domain name mapping, can't set up SCTP SCTP coupling between media gateway and the Media Gateway Controller, thereby influence the problem of the communication quality between media gateway and the Media Gateway Controller.
For achieving the above object, the embodiment of the invention adopts following technical scheme:
A kind of method of obtaining multiple-address message, comprise: the domain name mapping DNS request message that the receiving media gateway sends, according to the Media Gateway Controller domain name of carrying in the described DNS request message, obtain two above address informations of described Media Gateway Controller correspondence, generate the DNS response message according to described two above address informations, send described DNS response message to described media gateway.
A kind of domain name resolution server comprises:
Receiving element is used for the DNS request message that the receiving media gateway sends;
First acquiring unit is used for carrying the Media Gateway Controller domain name according to the DNS request message that described receiving element receives, and obtains two above address informations of described Media Gateway Controller correspondence;
First generation unit, the address information that is used for obtaining according to described acquiring unit generates the DNS response message;
Transmitting element is used for sending the DNS response message that described generation unit generates to described media gateway.
A kind of system that obtains multiple-address message comprises:
Domain name resolution server, be used for the DNS request message that the receiving media gateway sends, according to the Media Gateway Controller domain name of carrying in the described DNS request message, obtain two above address informations of described Media Gateway Controller correspondence, generate the DNS response message according to described two above address informations, send described DNS response message to described media gateway;
Media gateway, be used to send the DNS request message, described DNS request message carries the Media Gateway Controller domain name, receive the DNS response message that domain name resolution server returns according to described DNS request message, from described DNS response message, obtain two above address informations of described Media Gateway Controller correspondence.
The method of obtaining multiple-address message that the embodiment of the invention provides, device and system, domain name resolution server obtains two above address informations of Media Gateway Controller correspondence and generates the DNS response messages according to described two above address informations according to the Media Gateway Controller domain name of carrying in the DNS request message, send described DNS response message to media gateway, make media gateway from the DNS response message, obtain address information, realized media gateway is obtained the Media Gateway Controller correspondence by domain name mapping a plurality of IP address, make and set up multiple communication links between media gateway and the Media Gateway Controller, media gateway and Media Gateway Controller can communicate by described multiple communication links, thereby have guaranteed communication quality and reliability between media gateway and the Media Gateway Controller.
Description of drawings
The flow chart of the method for obtaining multiple-address message that Fig. 1 provides for the embodiment of the invention;
The flow chart of the method for obtaining multiple-address message that Fig. 2 provides for further embodiment of this invention;
The sequential chart one of the method for obtaining multiple-address message that Fig. 3 provides for yet another embodiment of the invention;
Fig. 4 is the flow chart of step 308 in the method for obtaining multiple-address message shown in Figure 3;
The sequential chart two of the method for obtaining multiple-address message that Fig. 5 provides for yet another embodiment of the invention;
The sequential chart three of the method for obtaining multiple-address message that Fig. 6 provides for yet another embodiment of the invention;
The structural representation one of the domain name resolution server that Fig. 7 provides for the embodiment of the invention;
The structural representation two of the domain name resolution server that Fig. 8 provides for the embodiment of the invention;
The structural representation three of the domain name resolution server that Fig. 9 provides for the embodiment of the invention;
Figure 10 is the structural representation of first acquiring unit in the domain name resolution server shown in Fig. 7-9;
The structural representation one of the device that obtains multiple-address message that Figure 11 provides for the embodiment of the invention;
The structural representation two of the device that obtains multiple-address message that Figure 12 provides for the embodiment of the invention;
The structural representation of the system that obtains multiple-address message that Figure 13 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, 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 belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
In order to solve the IP address that media gateway can only be obtained the Media Gateway Controller correspondence in the prior art by domain name mapping, can't set up SCTP SCTP coupling between media gateway and the Media Gateway Controller, thereby influence the problem of the communication quality between media gateway and the Media Gateway Controller., the embodiment of the invention provides a kind of methods, devices and systems that obtain multiple-address message.
As shown in Figure 1, the method for obtaining multiple-address message that the embodiment of the invention provides comprises:
In described step 101, carry the Media Gateway Controller domain name in the described DNS request message.
In described step 102, described address information comprises the IP address information, perhaps, and IP address information and IP address corresponding port number.
The method of obtaining multiple-address message that the embodiment of the invention provides, domain name resolution server obtains two above address informations of Media Gateway Controller correspondence and generates the DNS response messages according to described two above address informations according to the Media Gateway Controller domain name of carrying in the DNS request message, send described DNS response message to media gateway, make media gateway from the DNS response message, obtain address information, realized media gateway is obtained the Media Gateway Controller correspondence by domain name mapping a plurality of IP address, make and set up multiple communication links between media gateway and the Media Gateway Controller, thereby guaranteed the communication quality between MG and the MGC.
As shown in Figure 2, the method for obtaining multiple-address message that further embodiment of this invention provides comprises:
The method of obtaining multiple-address message that the embodiment of the invention provides, media gateway sends the DNS request message to domain name resolution server, make domain name resolution server obtain two above address informations of Media Gateway Controller correspondence and generate the DNS response messages according to described two above address informations according to the Media Gateway Controller domain name of carrying in the DNS request message, media gateway receives the described DNS response message that DNS returns, from this DNS response message, obtain address information, realized media gateway is obtained the Media Gateway Controller correspondence by domain name mapping a plurality of IP address, make and set up multiple communication links between media gateway and the Media Gateway Controller, thereby guaranteed the communication quality between media gateway and the Media Gateway Controller.
In order to make those skilled in the art can more be expressly understood the technical scheme that the embodiment of the invention provides, the method for obtaining multiple-address message that the embodiment of the invention provides is elaborated below by specific embodiment.
As shown in Figure 3, the method for obtaining multiple-address message that yet another embodiment of the invention provides comprises:
Step 301, domain name resolution server receiving media gateway sends the DNS request message, and described DNS request message carries the Media Gateway Controller domain name, as " domain.com ".
Optionally, described DNS request message also carries multiple-address message request indication, described multiple-address message request indication is used to ask two above address informations of described MGC domain name correspondence, media gateway can apply for obtaining multiaddress according to the actual needs, set up multiple communication links, also can only apply for an address, set up a communication link, for the low value communication that does not need to set up multilink, saved the communication resource, for the high value communication that needs are set up multilink, guaranteed the reliability of communication.
Step 302, domain name resolution server are obtained two above address informations of Media Gateway Controller correspondence according to the Media Gateway Controller domain name of carrying in the described DNS request message.
In the present embodiment, stored the corresponding relation of Media Gateway Controller domain name and address information on the domain name resolution server in advance.
Further, for to not needing to set up the low value communication of multilink, save the communication resource, to the high value communication that needs are set up multilink, guaranteed the reliability of communication, described step 302 comprises:
Domain name resolution server obtains two above address informations of described Media Gateway Controller correspondence according to Media Gateway Controller domain name of carrying in the described DNS request message and multiple-address message request indication.
In the present embodiment, the domain name resolution server can carry out the obtaining of two above address informations of Media Gateway Controller correspondence according to described multiple-address message request indication.As, when described multiple-address message request indication assignment was 1, the domain name resolution server obtained two above address informations of described Media Gateway Controller correspondence according to the Media Gateway Controller domain name of carrying in the described DNS request message.When described multiple-address message request indication assignment was 0, the domain name resolution server was according to the Media Gateway Controller domain name of carrying in the described DNS request message, and an address information obtaining described Media Gateway Controller correspondence gets final product.
Step 303, domain name resolution server generates the DNS response message according to described two above address informations.
In the present embodiment, described address information comprises the IP address information, dns server generates the DNS response message according to two above IP address informations, at this moment, described two above IP address corresponding port are unique determine and media gateway and Media Gateway Controller between use default protocol to carry out link establishment, as give tacit consent to and use SCTP SCTP to set up SCTP SCTP coupling between media gateway and the Media Gateway Controller, make domain name resolution server only need use the less communication resource when sending described DNS response message, saved the communication resource.Perhaps, carry out link and be connected the port that needs use in order not limit to Media Gateway Controller and media gateway, described address information comprises IP address and IP address corresponding port number.
Better address information in the described DNS response message of management when receiving the DNS response message in media gateway, described DNS response message can also comprise the number of described two above address informations.
Step 304, domain name resolution server sends described DNS response message to described media gateway.
Step 305, media gateway is obtained address information from described DNS response message.
Step 306, media gateway are set up two above communication links according to described two above address informations with described Media Gateway Controller.
In the present embodiment, described step 306 as shown in Figure 4, comprising:
Further, in order to ensure the QoS service quality between described media gateway and the Media Gateway Controller, the described method of obtaining multiple-address message as shown in Figure 5, also comprises:
Step 307, domain name resolution server are obtained described two above address information corresponding priorities information respectively;
Then described step 303 is:
Domain name resolution server generates the DNS response message according to described two above address informations and described two above address information corresponding priorities information.
Further, in order not limit to the communication protocol between described media gateway and the Media Gateway Controller, the described method of obtaining multiple-address message as shown in Figure 6, also comprises:
Step 308, domain name resolution server are obtained the communication protocol that described Media Gateway Controller uses according to the Media Gateway Controller domain name of carrying in the described DNS request message;
Then described step 303 is:
Domain name resolution server generates the DNS response message according to the communication protocol of described two above address informations and the use of described Media Gateway Controller.
When concrete the use, as shown in table 1, described DNS response message can comprise communication protocol, address information and the address corresponding priorities information that the number, Media Gateway Controller of described address information use, described address information comprise the IP address and with described IP address corresponding port number.
Table 1:DNS response message format
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| NUM?OF?ADDRESS | PROTOCOL |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| ADDRESS |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| PORT | PRIORITY |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| ADDRESS |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| PORT | PRIORITY |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| …… |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| ADDRESS |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| PORT | PRIORITY |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
Wherein, the number of the address information that obtains of NUM OF ADDRESS representative domain name analysis server parses; PROTOCOL represents the corresponding professional host-host protocol of this domain name; ADDRESS represents an IP address of domain name correspondence; PORT represents a port with the ADDRESS correspondence; PRIORITY represents the ADDRESS corresponding priorities, numerical value 0 can be set be limit priority, and numerical value 255 is lowest priority.
Be worth explanation the time, NUM OF ADDRESS numerical value can be 1 in the above-mentioned DNS response message format, when described NUM OF ADDRESS numerical value is 1, compatible DNS response message of the prior art.
When practical application, as, domain name resolution server receive that media gateway sends carry the DNS request message of " domain.com " time, the domain name resolution server can obtain two corresponding above address informations of " domain.com " according to " domain.com " and generate DNS response messages as shown in table 2.
Table 2: the DNS response message corresponding with " domain.com "
Concrete, when media gateway receives DNS response message as shown in table 2 as described, described media gateway draws the link that is based on SCTP SCTP that " domain.com " uses according to described DNS response message, " domain.com " corresponding port is Port1, " domain.com " used 4 IP addresses altogether, wherein IP1 priority is the highest, so IP1 is first-selected address.Media gateway generates Init message according to described address information.When Media Gateway Controller use be based on the link of SCTP SCTP the time, described media gateway sends described Init message request and sets up link based on SCTP SCTP with Media Gateway Controller.Carry out between MG and the MGC finishing the foundation of SCTP SCTP link alternately.Carry out between described media gateway and the Media Gateway Controller alternately, comprising: Media Gateway Controller returns the Init response message to described media gateway; Media gateway sends Cookie message to Media Gateway Controller; Media Gateway Controller returns the Cookie response message to media gateway.
In the present embodiment, when media gateway sends message on the IP address of limit priority can not when success, media gateway sends message on the IP address of trend time high priority.As, media gateway and domain name are for after the media gateway of " domain.com " sets up SCTP SCTP and link, media gateway goes up to IP1 and sends message, when media gateway go up to send message when unsuccessful to IP1, media gateway automatically switches to carries out the message transmission on the IP2, guaranteed the QoS service quality between media gateway and the Media Gateway Controller.
The method of obtaining multiple-address message that the embodiment of the invention provides, domain name resolution server obtains two above address informations of Media Gateway Controller correspondence and generates the DNS response messages according to described two above address informations according to the Media Gateway Controller domain name of carrying in the DNS request message, send described Media Gateway Controller response message to media gateway, make media gateway from the DNS response message, obtain address information, realized media gateway is obtained the Media Gateway Controller correspondence by domain name mapping a plurality of IP address, make and set up multiple communication links between media gateway and the Media Gateway Controller, thereby guaranteed the communication quality between media gateway and the Media Gateway Controller.
As shown in Figure 7, the domain name resolution server that the embodiment of the invention provides comprises:
Receiving element 401 is used for the DNS request message that the receiving media gateway sends; Concrete implementation method can be described referring to step 101 as shown in Figure 1, repeats no more herein.
First acquiring unit 402 is used for carrying the Media Gateway Controller domain name according to the DNS request message that described receiving element receives, and obtains two above address informations of described Media Gateway Controller correspondence; Concrete implementation method can be described referring to step 102 as shown in Figure 1, repeats no more herein.
Transmitting element 404 is used for sending the DNS response message that described generation unit generates to described media gateway.Concrete implementation method can be described referring to step 104 as shown in Figure 1, repeats no more herein.
Further, in order to ensure the QoS service quality between described media gateway and the Media Gateway Controller, as shown in Figure 8, the domain name resolution server also comprises:
Two above address information corresponding priorities information that second generation unit 406, two above address informations that are used for obtaining according to described first acquiring unit and described second acquisition unit obtain generate the DNS response message.Concrete implementation method can be described referring to step 303 as shown in Figure 5, repeats no more herein.
Further, in order not limit to the communication protocol between described media gateway and the Media Gateway Controller, as shown in Figure 9, the domain name resolution server also comprises:
The 3rd acquiring unit 407 is used for the Media Gateway Controller domain name of carrying according to the DNS request message that described receiving element receives, and obtains the communication protocol that described Media Gateway Controller uses; Concrete implementation method can be described referring to step 308 as shown in Figure 6, repeats no more herein.
The 3rd generates unit 408, and the communication protocol that the Media Gateway Controller that two above address informations that are used for obtaining according to described first acquiring unit and described the 3rd acquiring unit obtain uses generates the DNS response message.Concrete implementation method can be described referring to step 303 as shown in Figure 6, repeats no more herein.
Further, for to not needing to set up the low value communication of multilink, saved the communication resource, to the high value communication that needs are set up multilink, guaranteed the reliability of communication, as shown in figure 10, described first acquiring unit comprises:
Obtain subelement 4021, the Media Gateway Controller domain name and the multiple-address message request that are used for carrying according to described DNS request message are indicated, and obtain two above address informations of described Media Gateway Controller correspondence.
The domain name resolution server that the embodiment of the invention provides, domain name resolution server obtains two above address informations of Media Gateway Controller correspondence and generates the DNS response messages according to described two above address informations according to the Media Gateway Controller domain name of carrying in the DNS request message, send described DNS response message to media gateway, make media gateway from the DNS response message, obtain address information, realized media gateway is obtained the Media Gateway Controller correspondence by domain name mapping a plurality of IP address, make and set up multiple communication links between media gateway and the Media Gateway Controller, thereby guaranteed the communication quality between media gateway and the Media Gateway Controller.
As shown in figure 11, the device that obtains multiple-address message that the embodiment of the invention provides comprises:
Transmitting element 501 is used to send the DNS request message, and described DNS request message carries the Media Gateway Controller domain name; Concrete implementation method can be described referring to step 201 as shown in Figure 2, repeats no more herein.
Receiving element 502 is used to receive the DNS response message that dns server returns according to described DNS request message; Concrete implementation method can be described referring to step 202 as shown in Figure 2, repeats no more herein.
Acquiring unit 503 is used for obtaining from the DNS response message that described receiving element receives two above address informations of described Media Gateway Controller domain name correspondence.Concrete implementation method can be described referring to step 203 as shown in Figure 2, repeats no more herein.
Further, as shown in figure 12, the described device that obtains multiple-address message also comprises:
The device that obtains multiple-address message that the embodiment of the invention provides, media gateway sends the DNS request message to dns server, make domain name resolution server obtain two above address informations of media gateway controlling server correspondence and generate the DNS response messages according to described two above address informations according to the media gateway controlling server domain name of carrying in the DNS request message, media gateway receives the described DNS response message that domain name resolution server returns, from this DNS response message, obtain address information, realized media gateway is obtained the Media Gateway Controller correspondence by domain name mapping a plurality of IP address, make and set up multiple communication links between media gateway and the Media Gateway Controller, thereby guaranteed the communication quality between media gateway and the Media Gateway Controller.
As shown in figure 13, the system that obtains multiple-address message that the embodiment of the invention provides comprises:
Domain name resolution server 601, be used for the DNS request message that the receiving media gateway sends, according to the Media Gateway Controller domain name of carrying in the described DNS request message, obtain two above address informations of described Media Gateway Controller correspondence, generate the DNS response message according to described two above address informations, send described DNS response message to described media gateway.
Concrete structure and function are similar substantially with the device that obtains multiple-address message shown in Figure 11-12 to domain name resolution server shown in Fig. 7-10 that the foregoing description is described, repeat no more herein.
The system that obtains multiple-address message that the embodiment of the invention provides, domain name resolution server obtains two above address informations of Media Gateway Controller correspondence and generates the DNS response messages according to described two above address informations according to the Media Gateway Controller domain name of carrying in the DNS request message, send described DNS response message to media gateway, make media gateway from the DNS response message, obtain address information, realized media gateway is obtained the MGC correspondence by domain name mapping a plurality of IP address, make and set up multiple communication links between media gateway and the Media Gateway Controller, thereby guaranteed the communication quality between media gateway and the Media Gateway Controller.
The methods, devices and systems that obtain multiple-address message that the embodiment of the invention provides can be applied to communicating by letter between media gateway and the Media Gateway Controller.
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 relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, as ROM/RAM, magnetic disc or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (12)
1. a method of obtaining multiple-address message is characterized in that, comprising:
The domain name mapping DNS request message that the receiving media gateway sends;
According to the Media Gateway Controller domain name of carrying in the described DNS request message, obtain two above address informations of described Media Gateway Controller correspondence;
Generate the DNS response message according to described two above address informations;
Send described DNS response message to described media gateway.
2. method according to claim 1 is characterized in that, and is described according to the Media Gateway Controller domain name of carrying in the described DNS request message, and two above address informations obtaining described Media Gateway Controller correspondence comprise:
According to Media Gateway Controller domain name of carrying in the described DNS request message and multiple-address message request indication, obtain two above address informations of described Media Gateway Controller correspondence.
3. method according to claim 1 and 2 is characterized in that, also comprises:
Obtain described two above address information corresponding priorities information respectively, described address information comprises: the IP address information; Perhaps, IP address information and IP address corresponding port number;
Then describedly generate the DNS response messages according to described two above address informations and be:
According to described two above address informations and described two above address information corresponding priorities information, generate the DNS response message.
4. method according to claim 1 and 2 is characterized in that, also comprises:
According to the Media Gateway Controller domain name of carrying in the described DNS request message, obtain the communication protocol that described Media Gateway Controller uses;
Then describedly generate the DNS response messages according to described two above address informations and be:
Communication protocol according to described two above address informations and the use of described Media Gateway Controller generates the DNS response message.
5. a domain name resolution server is characterized in that, comprising:
Receiving element is used for the DNS request message that the receiving media gateway sends;
First acquiring unit is used for carrying the Media Gateway Controller domain name according to the DNS request message that described receiving element receives, and obtains two above address informations of described Media Gateway Controller correspondence;
First generation unit, the address information that is used for obtaining according to described acquiring unit generates the DNS response message;
Transmitting element is used for sending the DNS response message that described generation unit generates to described media gateway.
6. server according to claim 5 is characterized in that, described first acquiring unit comprises:
Obtain subelement, the Media Gateway Controller domain name and the multiple-address message request that are used for carrying according to described DNS request message are indicated, and obtain two above address informations of described Media Gateway Controller correspondence.
7. according to claim 5 or 6 described servers, it is characterized in that, also comprise:
Second acquisition unit is used to obtain two above address information corresponding priorities information that described first acquiring unit obtains;
Two above address information corresponding priorities information that second generation unit, two above address informations that are used for obtaining according to described first acquiring unit and described second acquisition unit obtain generate the DNS response message.
8. according to claim 5 or 6 described servers, it is characterized in that, also comprise:
The 3rd acquiring unit is used for the MGC domain name of carrying according to the DNS request message that described receiving element receives, and obtains the communication protocol that described MGC uses;
The 3rd generates the unit, and the communication protocol that the MGC that two above address informations that are used for obtaining according to described first acquiring unit and described the 3rd acquiring unit obtain uses generates the DNS response message.
9. a system that obtains multiple-address message is characterized in that, comprising:
Domain name resolution server, be used for the DNS request message that the receiving media gateway sends, according to the Media Gateway Controller domain name of carrying in the described DNS request message, obtain two above address informations of described Media Gateway Controller correspondence, generate the DNS response message according to described two above address informations, send described DNS response message to described media gateway;
Media gateway, be used to send the DNS request message, described DNS request message carries the Media Gateway Controller domain name, receive the DNS response message that domain name resolution server returns according to described DNS request message, from described DNS response message, obtain two above address informations of described Media Gateway Controller correspondence.
10. system according to claim 9 is characterized in that, the domain name resolution server comprises:
Receiving element is used for the DNS request message that the receiving media gateway sends;
First acquiring unit is used for carrying the Media Gateway Controller domain name according to the DNS request message that described receiving element receives, and obtains two above address informations of described Media Gateway Controller correspondence;
First generation unit, the address information that is used for obtaining according to described acquiring unit generates the DNS response message;
Transmitting element is used for sending the DNS response message that described generation unit generates to described media gateway.
11. system according to claim 10 is characterized in that, described first acquiring unit comprises:
Obtain subelement, the Media Gateway Controller domain name and the multiple-address message request that are used for carrying according to described DNS request message are indicated, and obtain two above address informations of described Media Gateway Controller correspondence.
12. system according to claim 9 is characterized in that, described media gateway comprises:
Transmitting element is used to send the DNS request message, and described DNS request message carries the Media Gateway Controller domain name;
Receiving element is used to receive the DNS response message that dns server returns according to described DNS request message;
Acquiring unit is used for obtaining from the DNS response message that described receiving element receives two above address informations of described Media Gateway Controller correspondence.
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| CN105282035A (en) * | 2015-11-09 | 2016-01-27 | 中国电子科技集团公司第三十研究所 | IP-address-bounce-based high-security network communication method |
| CN108124020A (en) * | 2016-11-28 | 2018-06-05 | 中国电信股份有限公司 | Domain name analytic method, system and equipment |
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| CN108124020A (en) * | 2016-11-28 | 2018-06-05 | 中国电信股份有限公司 | Domain name analytic method, system and equipment |
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