CN102970391A

CN102970391A - Domain name query processing method, server and system

Info

Publication number: CN102970391A
Application number: CN2012105239715A
Authority: CN
Inventors: 王新宇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2013-03-13
Anticipated expiration: 2032-12-07
Also published as: CN102970391B

Abstract

The embodiment of the invention provides a domain name query processing method, a server and a system. The domain name query processing method comprises the following steps of: receiving a domain name query request sent by a user terminal; determining a first ISP (Internet Service Provider) server with highest residual network processing capacity in each ISP server; feeding back the IP (Internet Protocol) address of the first ISP server to the user terminal. A DNS (Domain Name System) in the embodiment of the invention firstly determines the first ISP server with the highest residual network processing capacity in each current ISP server currently after receiving the domain name query request sent by the user terminal, and then feeds back the IP address of the first ISP server to the user terminal, so that the resources of each ISP server in the managed network are reasonably utilized, and the network load is reasonably distributed; moreover, when the user terminal visits the network, the connected ISP server is the ISP server with the highest residual network processing capacity in the current network, so that a success rate and access speed of the user terminal accessing a website are improved, and customer satisfaction is improved.

Description

Inquiry of the domain name processing method, server and system

Technical field

The embodiment of the invention relates to the communication technology, relates in particular to a kind of inquiry of the domain name processing method, server and system.

Background technology

(Domain Name System is called for short: DNS) be a kind ofly to provide domain name (Domain Name) and Internet protocol (Internet Protocol, abbreviation: the IP) service system of address transition for the Internet user domain name system.

Along with popularizing of Internet technology, (the Internet Service Provider of ISP, be called for short: ISP) can't use the support of separate unit isp server from the access of a large number of users on the Internet, ISP need to dispose many isp servers for the website of oneself realize load sharing.These isp servers all are mapped to the domain name of this website, i.e. same domain name, but each isp server uses respectively separately different IP addresses.Record the mapping relations between the IP address of domain name and each isp server on the dns server, (Resource Record is called for short: RR) to be called resource record.When user terminal passed through the domain name access website, dns server can be chosen a RR from database, and the IP address corresponding this RR offers user terminal, thereby so that user terminal can be according to isp server corresponding to this IP address access.

The dns server of prior art adopts the mode that RR is carried out poll that the IP address of isp server is provided to user terminal, when certain isp server breaks down or off-line, when perhaps the load of certain isp server is large, dns server still can offer user terminal with its IP address, thereby causes user terminal lower to access failure or the access speed of website.

Summary of the invention

In view of this, the embodiment of the invention provides a kind of inquiry of the domain name processing method, server and system, realizing rationally the sharing of network load, and improves success rate and the access speed of user terminal access website.

First aspect, the embodiment of the invention provide a kind of inquiry of the domain name processing method, comprising: receive the inquiry of the domain name request that user terminal sends; Determine the first the strongest isp server of rest network disposal ability in each isp server; The IP address of described the first isp server is fed back to described user terminal.

In the possible implementation of the first of first aspect, before the first isp server that the rest network disposal ability is the strongest in described definite each isp server, also comprise: inquire about the RR corresponding with each isp server, obtain the rest network disposal ability of each isp server.

The implementation possible according to the first of first aspect or first aspect, in the possible implementation of the second, before the inquiry of the domain name request that described reception user terminal sends, also comprise: interface statistics data from each isp server to each isp server inquiry that obtain; According to described interface statistics data, determine the rest network disposal ability of each isp server.

The implementation possible according to the second of first aspect in the third possible implementation, also comprises: if N continuous is inferior to the failure of isp server query interface statistics, then determine described isp server off-line, described N is the integer greater than 2.

The implementation possible according to the second of first aspect in the 4th kind of possible implementation, describedly obtained the interface statistics data of each isp server to the inquiry of each isp server, comprising:

Send the capability query request message of snmp protocol to each isp server;

Receive the capability query response message of the snmp protocol of each isp server feedback, comprise the interface statistics data of corresponding isp server in each capability query response message.

The implementation possible according to the second of first aspect, in the 5th kind of possible implementation, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

According to the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors;

Described according to described interface statistics data, determine the rest network disposal ability of each isp server, comprising:

Obtain described rest network disposal ability E according to formula (1):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets–(⊿ifInErrors+⊿ifOutErrors)×ifMtu) （1）

Wherein, T is that test period ⊿ ifInOctets is that the byte number ⊿ ifOutOctets that received in test period is that to have sent byte number ⊿ ifInErrors in test period be that test period the make a mistake input packet count ， ⊿ ifOutErrors that abandons of internal cause is the test period output grouping number that abandons of internal cause mistake.

According to the 5th kind of possible implementation of first aspect, in the 7th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifIutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, and isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards;

Obtain described rest network disposal ability E according to formula (2):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets–(⊿ifInErrors+⊿ifOutErrors+⊿ifInDiscards+⊿ifOutDiscards)×ifMtu) （2）

Wherein, T be test period ⊿ ifInOctets be the byte number ⊿ ifOutOctets that received in test period be sent in test period byte number ⊿ ifInErrors be test period internal cause make a mistake the input packet count ⊿ ifOutErrors that abandons be test period the output grouping that abandons of internal cause mistake count ⊿ ifIDiscards be in test period isp server CPU because of have little time to process the input packet count ， ⊿ ifOutDiscards that abandons be test period inner joint have little time to send the output grouping number that abandons.

According to the 5th kind of possible implementation of first aspect, in the 8th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifIErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol;

Obtain described rest network disposal ability E according to formula (3):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets–(⊿ifInErrors+⊿ifOutErrors+⊿ifInDiscards+⊿ifOutDiscards+⊿ifInUnknownProtos)×ifMtu) （3）

Wherein, T be test period ⊿ ifInOctets be the byte number ⊿ ifOutOctets that received in test period be sent in test period byte number ⊿ ifInErrors be test period internal cause make a mistake the input packet count ⊿ ifOutErrors that abandons be test period the output grouping that abandons of internal cause mistake count ⊿ ifInDiscards be in test period isp server CPU because of have little time to process the input packet count ⊿ ifOutDiscards that abandons be test period inner joint have little time to send the output grouping that abandons to Shuo ， ⊿ ifInUnknownProtos be the test period input packet count that abandons because receiving invalidation protocol of interior isp server.

According to the 5th kind of possible implementation of first aspect, in the 9th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the total amount of byte ifOutOctets that has sent;

Obtain described rest network disposal ability E according to formula (4):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets) （4）

Wherein, T is that test period ， ⊿ ifInOctets is that the byte number ， ⊿ ifOutOctets that has received in test period has sent byte number in test period.

According to the 5th kind of possible implementation of first aspect, in the tenth kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the unicast packet that receives and be delivered to the upper strata is counted ifInUcastPkts, receive and be delivered to the multicast packet count ifInNUcastPkts on upper strata, the unicast packet that receives and send from the upper strata is counted ifOutUcastPkts, the multicast packet count ifOutNUcastPkts that receives and send from the upper strata;

Obtain described rest network disposal ability E according to formula (5):

E=∑(ifSpeed×T/8(ifInUcastPkts+ifInNUcastPkts)×ifMtu (ifOutUcastPkts+ifOutNUcastPkts)×ifMtu) （5）

Wherein, T is test period; ⊿ ifInUcastPkts is for receiving and be delivered to the unicast packet number on upper strata within test period; ⊿ ifInNUcastPkts is for receiving and be delivered to the multicast packet count on upper strata within test period; the unicast packet number of ⊿ ifOutUcastPkts for receiving and send from the upper strata within test period, the multicast packet count of ⊿ ifOutNUcastPkts for receiving and send from the upper strata within test period.

Second aspect, the embodiment of the invention provide a kind of inquiry of the domain name processing method, comprising:

Receive the capability query request message of the snmp protocol of dns server transmission;

Capability query response message to described dns server feedback snmp protocol comprises the interface statistics data in the described capability query response message.

In the possible implementation of the first of second aspect, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

The implementation possible according to the first of second aspect, in the possible implementation of the second, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors.

The implementation possible according to the first of second aspect, in the third possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, and isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards.

The implementation possible according to the first of second aspect, in the 4th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol.

The implementation possible according to the first of second aspect, in the 5th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the total amount of byte ifOutOctets that has sent.

The implementation possible according to the first of second aspect, in the 6th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the unicast packet that receives and be delivered to the upper strata is counted ifInUcastPkts, receive and be delivered to the multicast packet count ifInNUcastPkts on upper strata, the unicast packet that receives and send from the upper strata is counted ifOutUcastPkts, the multicast packet count ifOutNUcastPkts that receives and send from the upper strata.

The third aspect, the embodiment of the invention provide a kind of dns server, comprising:

Receiver module is used for receiving the inquiry of the domain name request that user terminal sends; Select module, be used for determining the first the strongest isp server of each isp server rest network disposal ability; Feedback module is used for the IP address of described the first isp server is fed back to described user terminal.

In the possible implementation of the first of the third aspect, described dns server also comprises: enquiry module, be used for the inquiry RR corresponding with each isp server, and obtain the rest network disposal ability of each isp server.

The implementation possible according to the first of the third aspect or the third aspect, in the possible implementation of the second, also comprise: statistical module, be used for obtaining to each isp server inquiry the interface statistics data of each isp server, according to described interface statistics data, determine the rest network disposal ability of each isp server.

The implementation possible according to the second of the third aspect, in the third possible implementation, also comprise: determination module, if it is inferior to the failure of isp server query interface statistics to be used for N continuous, then determine described isp server off-line, described N is the integer greater than 2.

The implementation possible according to the second of the third aspect, in the 4th kind of possible implementation, described statistical module comprises: transmitting element is used for to the capability query request message of each isp server transmission snmp protocol; Receiving element for the capability query response message of the snmp protocol that receives each isp server feedback, comprises the interface statistics data of corresponding isp server in each capability query response message.

The implementation possible according to the second of the third aspect, in the 5th kind of possible implementation, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

The 5th kind of possible implementation according to the third aspect, in the 6th kind of possible implementation, described interface statistics data, comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors;

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (1):

Wherein, T is that test period ⊿ ifInOctets is that the byte number ⊿ ifOutOctets that received in test period is that to have sent byte number ⊿ ifOnErrors in test period be that test period the make a mistake input packet count ， ⊿ ifOutErrors that abandons of internal cause is the test period output grouping number that abandons of internal cause mistake.

The 5th kind of possible implementation according to the third aspect, in the 7th kind of possible implementation, the interface statistics data of described statistical module counts, comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards;

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (2):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets-(⊿ifInErrors+⊿ifOutErrors+⊿ifInDiscards+⊿ifOutDiscards)×ifMtu) （2）

Wherein, T be test period ⊿ ifInOctets be the byte number ⊿ ifOutOctets that received in test period be sent in test period byte number ⊿ ifInErrors be test period internal cause make a mistake the input packet count ⊿ ifOutErrors that abandons be test period the output grouping that abandons of internal cause mistake count ⊿ ifInDiscards be in test period isp server CPU because of have little time to process the input packet count ， ⊿ ifOutDiscards that abandons be test period inner joint have little time to send the output grouping number that abandons.

The 5th kind of possible implementation according to the third aspect, in the 8th kind of possible implementation, the interface statistics data of described statistical module counts, comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifOnDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol;

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (3):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets–(⊿ifInErrors+⊿ifOutErrors+⊿ifInDiscards+⊿ifOutDiscards+⊿ifInUnknownProtos)×ifMtu)（3）

Wherein, T be test period ⊿ fInOctets be the byte number ⊿ ifOutOctets that received in test period be sent in test period byte number ⊿ ifInErrors be test period internal cause make a mistake the input packet count ⊿ ifOutErrors that abandons be test period the output grouping that abandons of internal cause mistake count ⊿ ifInDiscards be in test period isp server CPU because of have little time to process the input packet count ⊿ ifOutDiscards that abandons be test period inner joint have little time to send the output grouping that abandons to Shuo ， ⊿ ifInUnknownProtos be the test period input packet count that abandons because receiving invalidation protocol of interior isp server.

The 5th kind of possible implementation according to the third aspect, in the 9th kind of possible implementation, the interface statistics data of described statistical module counts, comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the total amount of byte ifOutOctets that has sent;

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (4):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets) （4）

Wherein, T is that test period ， ⊿ fInOctets is that the byte number ， ⊿ ifOutOctets that has received in test period has sent byte number in test period.

The 5th kind of possible implementation according to the third aspect, in the tenth kind of possible implementation, the interface statistics data of described statistical module counts, comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the unicast packet that receives and be delivered to the upper strata is counted ifInUcastPkts, receive and be delivered to the multicast packet count ifInNUcastPkts on upper strata, the unicast packet that receives and send from the upper strata is counted ifOutUcastPkts, the multicast packet count ifOutNUcastPkts that receives and send from the upper strata;

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (5):

E=∑(ifSpeed×T/8–(⊿ifInUcastPkts+⊿ifInNUcastPkts)×ifMtu–(⊿ifOutUcastPkts+⊿ifOutNUcastPkts)×ifMtu) （5）

Fourth aspect, the embodiment of the invention provide a kind of isp server, comprising:

Receiver module is for the capability query request message of the snmp protocol that receives the dns server transmission; Feedback module is used for comprising the interface statistics data to the capability query response message of described dns server feedback snmp protocol in the described capability query response message.

In the possible implementation of the first of fourth aspect, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

The implementation possible according to the first of fourth aspect, in the possible implementation of the second, described interface statistics data, comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors.

The implementation possible according to the first of fourth aspect, in the third possible implementation, described interface statistics data comprise:

The implementation possible according to the first of fourth aspect, in the 4th kind of possible implementation, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifIutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol.

The implementation possible according to the first of fourth aspect, in the 5th kind of possible implementation, described interface statistics data comprise:

The implementation possible according to the first of fourth aspect, in the 6th kind of possible implementation, described interface statistics data comprise:

The 5th aspect, the embodiment of the invention provide a kind of system, comprise the isp server in the arbitrary possible implementation of dns server in each possible implementation of asking the third aspect and at least one fourth aspect.

The inquiry of the domain name processing method of the embodiment of the invention, server and system, mutual by dns server and isp server, obtain the rest network disposal ability of each isp server, after the inquiry of the domain name request that receives the user terminal transmission, determine first the first the strongest isp server of rest network disposal ability in each isp server of current time, IP address with this first isp server feeds back to user terminal again, the reasonable utilization of each isp server resource and the reasonable distribution of network load in the network that realization is managed this dns server, also so that the isp server that user terminal connects when access websites is always the strongest isp server of rest network disposal ability in the current network, thereby improve success rate and the access speed of user terminal access website, experience thereby make the user obtain optimum user, thereby improve user satisfaction.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the flow chart of inquiry of the domain name processing method one embodiment of the present invention;

Fig. 2 is the flow chart of another embodiment of inquiry of the domain name processing method of the present invention;

Fig. 3 is the again flow chart of an embodiment of inquiry of the domain name processing method of the present invention;

Fig. 4 is the again signaling process figure of an embodiment of inquiry of the domain name processing method of the present invention;

Fig. 5 is the structural representation of dns server one embodiment one of the present invention;

Fig. 6 is the structural representation of another embodiment of dns server of the present invention;

Fig. 7 is the again structural representation of an embodiment of dns server of the present invention;

Fig. 8 is the structural representation of isp server one embodiment of the present invention;

Fig. 9 is the structural representation of domain name treatment system one embodiment of the present invention.

Embodiment

For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment 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 obtains under the creative work prerequisite.

The user terminal that relates among the application, referring to provide the equipment that is communicated with the data of the Internet to the user, can be that wireless terminal also can be catv terminal, and concrete form can be desktop computer, notebook computer, panel computer etc.

Fig. 1 is the flow chart of inquiry of the domain name processing method one embodiment of the present invention, and the executive agent of this embodiment is dns server, and as shown in Figure 1, the method for present embodiment can comprise:

The inquiry of the domain name request that step 101, reception user terminal send.

Concrete scene can for, the user is by user terminal access one concrete website, then user terminal can send to dns server the inquiry of the domain name request of this website, at this moment, dns server receives this inquiry of the domain name request.

Step 102, determine the first the strongest isp server of rest network disposal ability in each isp server.

Particularly, dns server is in running, no matter whether receive the message that user terminal sends, dns server can pass through Simple Network Management Protocol (Simple Network ManagementProtocol, be called for short: SNMP), regularly to each isp server acquisition interface statistics, bandwidth ifSpeed for example, the total amount of byte ifInOctets that interface has received, the total amount of byte ifOutOctets that interface has sent etc., adopt specific algorithm, the rest network disposal ability E that for example can establish isp server is: the total amount of byte that the fixed cycle inner joint can transmit deducts the total amount of byte that has received and sent at this fixed cycle inner joint, obtains the rest network disposal ability E of each isp server.The rest network disposal ability E of a certain isp server has reflected the size of the data volume that can receive, process and send at this isp server of current time and the speed of response speed, if the numerical value of the rest network disposal ability E of an isp server is larger, illustrate that the data volume that this isp server can receive, processes and send is larger, response speed is faster, that is to say that the response speed of the website that the connected success rate of user terminal is larger and user terminal is experienced is faster.

Therefore, when receiving the inquiry of the domain name request that user terminal sends, dns server can with this constantly the isp server of the numerical value maximum of rest network disposal ability E as the first the strongest isp server of rest network disposal ability.

Step 103, the IP address of described the first isp server is fed back to described user terminal.

Particularly, dns server can obtain by inquiry RR the IP address of the first isp server, and this IP address is fed back to user terminal.

Present embodiment, dns server is by after the inquiry of the domain name request that receives the user terminal transmission, determine first the first the strongest isp server of rest network disposal ability in each isp server of current time, IP address with this first isp server feeds back to user terminal again, the reasonable utilization of each isp server resource and the reasonable distribution of network load in the network that realization is managed this dns server, also so that the isp server that user terminal connects when access websites is always the strongest isp server of rest network disposal ability in the current network, thereby improve success rate and the access speed of user terminal access website, experience thereby make the user obtain optimum user, thereby improve user satisfaction.

The below adopts several specific embodiments, and the technical scheme of embodiment of the method shown in Figure 1 is elaborated.

Fig. 2 is the flow chart of another embodiment of inquiry of the domain name processing method of the present invention, and the executive agent of this embodiment is dns server, and as shown in Figure 2, the method for present embodiment can comprise:

S201, obtain the interface statistics data of each isp server to the inquiry of each isp server.

Particularly, dns server can regularly send the capability query request message of snmp protocol to each isp server, receive the capability query response message of the snmp protocol of each isp server feedback, comprise the interface statistics data of corresponding isp server in each capability query response message.

Described interface statistics data can (Management InformationBase version 2 be called for short: at least a data among the network interface item ifEntry MIB-2) for the management information bank version 2.

MIB-2 is a branch in the management object database under the internet device administrative standard agreement SNMP, and its branch node is 1.3.6.1.2.1, (being iso.org.dod.internet.mgmt.mib-2).MIB-2 has defined TCP/IP, and (Transfer Control Protocol/Internet Protocol, be called for short: management information TCP/IP) wherein, comprises network interface item ifEntry.

Described interface statistics data for example are among the network interface item ifEntry: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors.

In addition, if continuous three times to isp server query interface statistics failure, then determine this isp server off-line, the value of the rest network disposal ability E of this isp server can be set to 0., with continuous three foundations to isp server query interface statistics failure conduct judgement isp server off-line, be a kind of preferred version herein, the present invention is not as limit.

S202, according to described interface statistics data, determine the rest network disposal ability of each isp server.

Particularly, dns server adopts the rest network disposal ability of suitable each isp server of Algorithm Analysis, and present embodiment provides following several mode:

Mode one: obtain described rest network disposal ability E according to formula (1):

Mode two: obtain described rest network disposal ability E according to formula (2):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets(⊿ifInErrors+⊿ifOutErrors+⊿ifInDiscards+⊿ifOutDiscards)×ifMtu) （2）

Mode two is on the basis of mode one, considered that also isp server CPU has little time to send the computational methods that the output grouping number that abandons draws because having little time to process the input packet count that abandons and interface.Correspondingly, in step S201, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards.

Mode three: obtain described rest network disposal ability E according to formula (3):

Mode three is on the basis of mode two, also considered the computational methods that isp server draws because of the input packet count that receives invalidation protocol and abandon.Correspondingly, in step S201, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol.

Mode four: obtain described rest network disposal ability E according to formula (4):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets) （4）

Mode four is on the basis of mode one, ignores the packet count that abandons because of any reason and assigns the byte of all acceptance and transmission as effective byte, and the computational methods that draw.Correspondingly, in step S201, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the total amount of byte ifOutOctets that has sent.

Mode five: obtain described rest network disposal ability E according to formula (5):

Mode five is all not identical with the algorithm idea of aforesaid way one ~ mode four, is to utilize the packet count of processing through the upper strata indirectly to analyze rest network disposal ability E.Correspondingly, in step S201, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the unicast packet that receives and be delivered to the upper strata is counted ifInUcastPkts, receive and be delivered to the multicast packet count ifInNUcastPkts on upper strata, the unicast packet that receives from the upper strata and send is counted ifOutUcastPkts, the multicast packet count ifOutNUcastPkts that receives and send from the upper strata.

More than in each mode, because statistics is regularly to upgrade, the numerical value of the rest network disposal ability E of each isp server that therefore obtains also is regularly to upgrade, this numerical value changes along with the actual operating state of each isp server, can think its rest network disposal ability of real-time reflection.Dns server can also be associated the rest network disposal ability E that obtains each isp server with RR, i.e. periodic refreshing RR so that dns server can by inquire about rest network disposal ability that RR directly obtains each isp server with and the IP address.

The inquiry of the domain name request that S203, reception user terminal send.

S204, determine the first the strongest isp server of rest network disposal ability in each isp server.

Particularly, inquire about the RR corresponding with each isp server, obtain the rest network disposal ability of each isp server, can be with the isp server of the numerical value maximum of rest network disposal ability E as the first the strongest isp server of rest network disposal ability, and can from RR, obtain the IP address of the first isp server.

S205, the IP address of the first isp server is fed back to described user terminal.

Present embodiment, by regularly obtain the interface statistics data of each isp server to each isp server inquiry, and according to described interface statistics data, the rest network disposal ability of each isp server of real-time analysis, when being implemented in the inquiry of the domain name request solution that receives the user terminal transmission, the strongest isp server of rest network disposal ability in the current time network can be offered user terminal, thereby the reasonable utilization of each isp server resource and the reasonable distribution of network load in the network of realizing this dns server is managed, and the success rate that connects when making user's access websites is protected.

Fig. 3 is the again flow chart of an embodiment of inquiry of the domain name processing method of the present invention, and the executive agent of this embodiment is isp server, and as shown in Figure 3, the method for present embodiment can comprise:

The capability query request message of the snmp protocol that S301, reception dns server send.

S302, to the capability query response message of dns server feedback snmp protocol, comprise the interface statistics data in the described capability query response message.

Particularly, the interface statistics data can be at least a data among the network interface item ifEntry among the MIB-2.

Present embodiment, corresponding with the step S201 in the technical scheme of the corresponding embodiment of Fig. 2, capability query request message by receiving the snmp protocol that dns server sends and to the capability query response message of dns server feedback snmp protocol, and in the capability query response message, comprising the mode of interface statistics data, realization offers dns server with the interface statistics data of this isp server.

Present embodiment is when specific implementation, alternatively, corresponding to the mode one in embodiment illustrated in fig. 2, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors.

Present embodiment is when specific implementation, alternatively, corresponding to the mode two in embodiment illustrated in fig. 2, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards.

Present embodiment is when specific implementation, alternatively, corresponding to the mode three in embodiment illustrated in fig. 2, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol.

Present embodiment is when specific implementation, alternatively, corresponding to the mode four in embodiment illustrated in fig. 2, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the total amount of byte ifOutOctets that has sent.

Present embodiment is when specific implementation, alternatively, corresponding to the mode five in embodiment illustrated in fig. 2, the interface statistics data can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the unicast packet that receives and be delivered to the upper strata is counted ifInUcastPkts, receive and be delivered to the multicast packet count ifInNUcastPkts on upper strata, the unicast packet that receives and send from the upper strata is counted ifOutUcastPkts, the multicast packet count ifOutNUcastPkts that receives and send from the upper strata.

Fig. 4 is the again signaling process figure of an embodiment of inquiry of the domain name processing method of the present invention, as shown in Figure 4, the quantity of isp server is 2, by dns server and each isp server (isp server 1 ~ isp server 2) mutually mutual process the inquiry of the domain name processing method that present embodiment provides is described in detail, the method for present embodiment can comprise:

S401, dns server regularly send the capability query request message of snmp protocol to isp server 1.

S402, dns server regularly send the capability query request message of snmp protocol to isp server 2.

During actual the use, the execution of step S401 and step S402 does not have the restriction of sequencing, and these two steps can be carried out simultaneously, also can carry out in any order.

S403, isp server 1 comprise the interface statistics data to the capability query response message of dns server feedback snmp protocol in the described capability query response message.

S404, isp server 2 comprise the interface statistics data to the capability query response message of dns server feedback snmp protocol in the described capability query response message.

During actual the use, the execution of step S404 and step S404 does not have sequencing, and these two steps can be carried out simultaneously, also can carry out in any order.

S405, dns server are determined the rest network disposal ability of isp server 1 according to described interface statistics data.

S406, dns server are determined the rest network disposal ability of isp server 2 according to described interface statistics data.

During actual the use, the execution of step S405 and step S406 does not have sequencing, and these two steps can be carried out simultaneously, also can carry out in any order.And, in step S405 and step S406, determine the mode of the network throughput E of each isp server, can use any one mode in middle mode one ~ mode five embodiment illustrated in fig. 2, need to prove, to the calculating of the rest network disposal ability of each isp server, need to use same way herein.

S407, terminal send the inquiry of the domain name request to dns server.

S408, dns server are determined the first the strongest isp server of rest network disposal ability in each isp server.

S409, the IP address of described the first isp server is fed back to described user terminal.

S410, according to the IP address that receives, the access isp server.

If the first isp server is isp server 1, then the terminal access isp server 1.

Present embodiment, by the information interaction between dns server and each isp server, be that dns server is to each isp server difference query interface statistics, each isp server is respectively to dns server feedback interface statistics, make dns server can obtain the rest network disposal ability of each isp server, thereby can feed back to user terminal in the IP address of user terminal isp server that the rest network disposal ability is the strongest during by the domain name access website, thereby improve success rate and the access speed of user terminal access website.

The quantity of isp server is 2 in above-described embodiment, and when reality is used, the quantity of isp server is not limit, can be for greater than any integer of 1, and dns server send to each isp server the query requests message order, the order of each isp server feedback query response message and the rest network disposal ability that dns server is determined each isp server order all in no particular order.

Fig. 5 is the structural representation of dns server one embodiment of the present invention, as shown in Figure 5, the device of present embodiment can comprise: receiver module 11, selection module 12 and feedback module 13, wherein, receiver module 11 is used for receiving the inquiry of the domain name request that user terminal sends, select module 12 to be used for determining the first the strongest isp server of each isp server rest network disposal ability, feedback module 13 is used for the IP address of described the first isp server is fed back to described user terminal.

The device of present embodiment can be for the technical scheme of carrying out embodiment of the method shown in Figure 1, and its realization principle and technique effect are similar, repeat no more herein.

Fig. 6 is the structural representation of another embodiment of dns server of the present invention, as shown in Figure 6, the device of present embodiment is on the basis of apparatus structure shown in Figure 4, further, can also comprise: enquiry module 14, this enquiry module 14 is used for the inquiry RR corresponding with each isp server, obtains the rest network disposal ability of each isp server.

Fig. 7 is the again structural representation of an embodiment of dns server of the present invention, and as shown in Figure 7, the device of present embodiment further, can also comprise on the basis of apparatus structure shown in Figure 5:

Statistical module 15 and determination module 16, statistical module 15 are used for obtaining to each isp server inquiry the interface statistics data of each isp server, according to described interface statistics data, determine the rest network disposal ability of each isp server; If determination module 16 continuous three times to the failure of isp server query interface statistics, then determine described isp server off-line.

Further, statistical module 15 can comprise transmitting element 151, receiving element 152 and statistical disposition unit 153.Transmitting element 151 is used for sending to each isp server the capability query request message of snmp protocol; Receiving element 152 is used for the capability query response message of the snmp protocol of each isp server feedback of reception, comprises the interface statistics data of corresponding isp server in each capability query response message; Statistical disposition unit 153 is used for according to described interface statistics data, determines the rest network disposal ability of each isp server.

Further, the interface statistics data obtained of statistical module 15 can be at least a data among the network interface item ifEntry among the MIB-2.

Further alternatively, the interface statistics data that statistical module 15 obtains, comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors;

Statistical module 15, concrete being used for obtains described rest network disposal ability E according to formula (1):

Further alternatively, the interface statistics data that statistical module 15 obtains comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, and isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards;

Statistical module 15, concrete being used for obtains described rest network disposal ability E according to formula (2):

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol;

Statistical module 15, concrete being used for obtains described rest network disposal ability E according to formula (3):

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the total amount of byte ifInOctets that has received, the total amount of byte ifOutOctets that has sent;

Statistical module 15, concrete being used for obtains described rest network disposal ability E according to formula (4):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets) （4）

Wherein, T is that test period ， ⊿ ifInOctets is that the byte number ， ⊿ ifOutOctets that has received in test period is the byte number that has sent in test period.

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed(unit is the bit per second), the unicast packet that receives and be delivered to the upper strata is counted ifInUcastPkts, receive and be delivered to the multicast packet count ifInNUcastPkts on upper strata, the unicast packet that receives and send from the upper strata is counted ifOutUcastPkts, the multicast packet count ifOutNUcastPkts that receives and send from the upper strata;

Statistical module 15, concrete being used for obtains described rest network disposal ability E according to formula (5):

The device of present embodiment can be for the technical scheme of carrying out embodiment of the method shown in Figure 2, and its realization principle and technique effect are similar, repeat no more herein.

Fig. 8 is the structural representation of isp server one embodiment of the present invention, as shown in Figure 8, the device of present embodiment can comprise: receiver module 21, feedback module 22, wherein, receiver module 21 is used for the capability query request message of the snmp protocol of reception dns server transmission, feedback module 22 is used for comprising the interface statistics data to the capability query response message of described dns server feedback snmp protocol in the described capability query response message.

The interface statistics data that feedback module 22 comprises in the response message of dns server feedback can be at least a data among the network interface item ifEntry among the MIB-2.

Further alternatively, the interface statistics data that feedback module 22 comprises in the response message of dns server feedback, can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors.

Further alternatively, the interface statistics data that feedback module 22 comprises in the response message of dns server feedback, can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards.

Further alternatively, the interface statistics data that feedback module 22 comprises in the response message of dns server feedback, can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol.

Further alternatively, the interface statistics data that feedback module 22 comprises in the response message of dns server feedback can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the total amount of byte ifOutOctets that has sent.

Further alternatively, the interface statistics data that feedback module 22 comprises in the response message of dns server feedback, can comprise: the maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the unicast packet that receives and be delivered to the upper strata is counted ifInUcastPkts, receive and be delivered to the multicast packet count ifInNUcastPkts on upper strata, the unicast packet that receives and send from the upper strata is counted ifOutUcastPkts, the multicast packet count ifOutNUcastPkts that receives and send from the upper strata.

The device of present embodiment can be for the technical scheme of carrying out embodiment of the method shown in Figure 3, and its realization principle and technique effect are similar, repeat no more herein.

Fig. 9 is the structural representation of domain name treatment system one embodiment of the present invention, and as shown in Figure 9, the system of present embodiment comprises: dns server and at least one isp server, and wherein, dns server can adopt the structure of the arbitrary device embodiment of Fig. 5 ~ Fig. 7; At least one isp server can adopt the structure of the device embodiment of Fig. 8.Its accordingly, can execution graph 1 ~ Fig. 4 in the technical scheme of either method embodiment, it realizes that principle and technique effect are similar, repeats no more herein.

One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can be finished by the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program is carried out the step that comprises above-mentioned each embodiment of the method when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.

Claims

1. an inquiry of the domain name processing method is characterized in that, comprising:

Receive the inquiry of the domain name request that user terminal sends;

Determine the first the strongest isp server of rest network disposal ability in each isp server;

The IP address of described the first isp server is fed back to described user terminal.

2. method according to claim 1 is characterized in that, before the first isp server that the rest network disposal ability is the strongest in described definite each isp server, also comprises:

Inquire about the RR corresponding with each isp server, obtain the rest network disposal ability of each isp server.

3. method according to claim 1 and 2 is characterized in that, before the inquiry of the domain name request that described reception user terminal sends, also comprises:

Obtain the interface statistics data of each isp server to each isp server inquiry;

According to described interface statistics data, determine the rest network disposal ability of each isp server.

4. method according to claim 3 is characterized in that, also comprises:

If N continuous is inferior to the failure of isp server query interface statistics, then determine described isp server off-line, described N is the integer greater than 2.

5. method according to claim 3 is characterized in that, describedly obtains the interface statistics data of each isp server to the inquiry of each isp server, comprising:

Send the capability query request message of snmp protocol to each isp server;

6. method according to claim 3 is characterized in that, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

7. method according to claim 6 is characterized in that, described interface statistics data comprise:

Obtain described rest network disposal ability E according to formula (1):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifIutOctets–(⊿ifInErrors+⊿ifOutErrors)×ifMtu) （1）

8. method according to claim 6 is characterized in that, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, and isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, and interface has little time to send and the output grouping that abandons is counted ifOutDiscards;

Obtain described rest network disposal ability E according to formula (2):

9. method according to claim 6 is characterized in that, described interface statistics data comprise:

The maximum data packet byte number ifMtu that can transmit, bandwidth ifSpeed, the total amount of byte ifInOctets that has received, the input packet count ifInErrors that abandons because making a mistake, the total amount of byte ifOutOctets that has sent, the output grouping that abandons because making a mistake is counted ifOutErrors, isp server CPU is because having little time to process the input packet count ifInDiscards that abandons, interface has little time to send and the output grouping that abandons is counted ifOutDiscards, the input packet count ifInUnknownProtos that isp server abandons because receiving invalidation protocol;

Obtain described rest network disposal ability E according to formula (3):

10. method according to claim 6 is characterized in that, described interface statistics data comprise:

Obtain described rest network disposal ability E according to formula (4):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets) （4）

11. method according to claim 6 is characterized in that, described interface statistics data comprise:

Obtain described rest network disposal ability E according to formula (5):

E=∑(ifSpeed×T/8(ifInUcastPkts+ifInNUcastPkts)×ifMtu (ifIutUcastPkts+ifOutNUcastPkts)×ifMtu) （5）

12. an inquiry of the domain name processing method is characterized in that, comprising:

13. method according to claim 12 is characterized in that, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

14. method according to claim 13 is characterized in that, described interface statistics data comprise:

15. method according to claim 13 is characterized in that, described interface statistics data comprise:

16. method according to claim 13 is characterized in that, described interface statistics data comprise:

17. method according to claim 13 is characterized in that, described interface statistics data comprise:

18. method according to claim 13 is characterized in that, described interface statistics data comprise:

19. a dns server is characterized in that, comprising:

Receiver module is used for receiving the inquiry of the domain name request that user terminal sends;

Select module, be used for determining the first the strongest isp server of each isp server rest network disposal ability;

Feedback module is used for the IP address of described the first isp server is fed back to described user terminal.

20. dns server according to claim 19 is characterized in that, also comprises:

Enquiry module is used for the inquiry RR corresponding with each isp server, obtains the rest network disposal ability of each isp server.

21. according to claim 19 or 20 described dns servers, it is characterized in that, also comprise:

Statistical module is used for inquiring about the interface statistics data of obtaining each isp server to each isp server, according to described interface statistics data, determines the rest network disposal ability of each isp server.

22. dns server according to claim 21 is characterized in that, also comprises:

Determination module if it is inferior to the failure of isp server query interface statistics to be used for N continuous, is then determined described isp server off-line, and described N is the integer greater than 2.

23. dns server according to claim 21 is characterized in that, described statistical module comprises:

Transmitting element is used for to the capability query request message of each isp server transmission snmp protocol;

Receiving element for the capability query response message of the snmp protocol that receives each isp server feedback, comprises the interface statistics data of corresponding isp server in each capability query response message;

The statistical disposition unit is used for according to described interface statistics data, determines the rest network disposal ability of each isp server.

24. dns server according to claim 21 is characterized in that, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

25. dns server according to claim 24 is characterized in that, described interface statistics data comprise:

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (1):

26. dns server according to claim 24 is characterized in that, the interface statistics data of described statistical module counts comprise:

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (2):

27. dns server according to claim 24 is characterized in that, the interface statistics data of described statistical module counts comprise:

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (3):

28. dns server according to claim 24 is characterized in that, the interface statistics data of described statistical module counts comprise:

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (4):

E=∑(ifSpeed×T/8-⊿ifInOctets-⊿ifOutOctets) （4）

29. dns server according to claim 24 is characterized in that, the interface statistics data of described statistical module counts comprise:

Described statistical module specifically is used for:

Obtain described rest network disposal ability E according to formula (5):

30. an isp server is characterized in that, comprising:

Receiver module is for the capability query request message of the snmp protocol that receives the dns server transmission;

Feedback module is used for comprising the interface statistics data to the capability query response message of described dns server feedback snmp protocol in the described capability query response message.

31. isp server according to claim 30 is characterized in that, described interface statistics data are at least a data among the network interface item ifEntry among the MIB-2.

32. isp server according to claim 31 is characterized in that, described interface statistics data comprise:

33. method according to claim 31 is characterized in that, described interface statistics data comprise:

34. isp server according to claim 31 is characterized in that, described interface statistics data comprise:

35. isp server according to claim 31 is characterized in that, described interface statistics data comprise:

36. isp server according to claim 31 is characterized in that, described interface statistics data comprise:

37. a system is characterized in that, comprises in the claim 19 ~ 29 each described isp server in each described dns server and at least one claim 30 ~ 36.