CN101409689B - Method for exchanging internet address - Google Patents
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- CN101409689B CN101409689B CN2008102272895A CN200810227289A CN101409689B CN 101409689 B CN101409689 B CN 101409689B CN 2008102272895 A CN2008102272895 A CN 2008102272895A CN 200810227289 A CN200810227289 A CN 200810227289A CN 101409689 B CN101409689 B CN 101409689B
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Abstract
The invention discloses an internet address changing method, belonging to the computer network technical field. The method is characterized in that based on a present internet protocol, internet users are divided into massive common users and a plurality of groups of high performance users. The common users use the current internet service mode of doing the best, and the high performance users are configured with high performance addresses when in need and use high quality services. By the access control, the dynamic distribution, the routing release and the bandwidth reservation of the high performance addresses in an autonomous domain, the link selection and the bandwidth reservation among domains and the charging by time, the method can provide different services to different users. With perfect expansibility and stability, the internet address changing method effectively solves important problems of the current internet which comprise the service quality (QoS) problem, the network safety problem, the sustainable development economic model, etc. And the internet address changing method provides a new architecture support for the development of wireless technology, multicast technology, and the like, of the current internet and other important technical fields.
Description
Technical field
Method for exchanging internet address belongs to technical field of the computer network.
Background technology
The Internet based on packet switching has become the most important information infrastructure in the whole world at present, and the integration of three networks of communication network, broadcasting and television network and computer network is the common recognition that technical foundation has become people with the Internet.The Internet has characteristics such as but the good survivability of extensibility is strong, flexibility is strong, omnipresent, but at present the design concept of " do not have connect, end-to-end and do one's best " of the Internet has also been brought poor stability, can't guarantee service quality (QoS) and do not had the significant problems such as economic model of distinct sustainable development.Application such as video, application in real time, P2P constantly increase for the demand of the Internet bandwidth, but the raising of router performance is subjected to the restriction of Moore's Law, cause the demand of infinite bandwidth and the contradiction of band-limited resource, the demand of fail safe simultaneously and reliability makes this contradiction intensify more.
Though carried out years of researches internet arena, the communications field and field of broadcast televisions people, for each independently problem many solutions have been proposed, but some solution has been brought problems such as extensibility from having run counter to the design concept of the Internet in essence.Simultaneously, the cost at the solution of individual problem is to cause other problems to become more serious.(the particularly U.S.) also starts some major projects at present in the world, and purpose is to redesign internet architecture, and still in view of the scale of the Internet, the whole world, it is impossible abandoning present the Internet.
The method for exchanging internet address that the present invention proposes has made full use of packet switching and Circuit-switched advantage, on the basis that does not change existing internet core agreement, internet architecture is carried out significant improvement, systematically solved service quality (QoS) problem, Security Control Problem and the sustainable development economy model problem of present the Internet.
Essential characteristic of the present invention comprises: 1) method for exchanging internet address is based on present Internet protocol, the parameter of definition high performance network application service demand, the network (service-domain) that comprises user's communication object place, opposite end, required bandwidth, corresponding service amount and needed service quality are as indexs such as time-delay, packet loss, shakes.To have the application service of QoS requirement and security requirement to be defined as the performance application service, the address definition that is used for high performance service is a high performance address, and the user of application performance application service is a high-performance user.2) Internet user is divided into the domestic consumer of magnanimity and some class high-performance users of limiting the quantity of.Domestic consumer uses common IP address, enjoys the Internet service mode of present " doing one's best ", and high-performance user uses special-purpose high performance address, enjoys the performance application that guarantees end to end performance.3), calculate required maximum concurrent communication number of processes according to the traffic carrying capacity of high-performance user and the percent of call lost of permission.On this basis, according to the route policy, calculate required high performance address quantity.According to the demand of high performance communication, calculate required high performance communication total bandwidth to bandwidth; High performance address piece and high performance communication total bandwidth are the foundations of bandwidth reservation.4) reserve some specific high performance address pieces and bind mutually with specific high performance network application service demand (parameter).5) in autonomous territory, reserve total bandwidth under the extreme case, under cross-domain situation, reserve corresponding total bandwidth for the high performance address piece for high performance address.6) between autonomous territory, select cross-domain path; For the adjacent autonomous territory in selected path, by road protocols having (BGP) issue high performance address piece static, cluster between the territory; 7) newly-increased three layers of soft switching server and three layers of access control gateway router are controlled the distribution and the use of high performance address.8) three layers of soft switching server are according to the high-performance user demand, identifying user identity, and information such as service-domain are carried out access control according to the maximum concurrent quantity that is allowed for high-performance user, dynamic assignment high performance address section simultaneously; 9) three layers of access control gateway router equipment come into force the high performance address section, control its bandwidth and mutual by with this autonomous territory Routing Protocol (iBGP or eBGP multihop etc.), the route of the high performance address section of dynamic assignment is published on the path in each management subdomain; 10) under cross-domain situation, the user uses the high performance address section of dynamic assignment to carry out high performance communication, this moment, this user's the performance and the service quality of inbound traffics can guarantee fully, and the performance of this user's outflow and service quality are guaranteed by the enforcement method for exchanging internet address by the opposite end object of communicate by letter; 11) carry out based on corresponding to the unit interval bandwidth resources usage charges of certain class application service and the charging of time product for the high performance address of dynamic assignment.
Summary of the invention
The objective of the invention is on the basis that does not change existing the Internet, systematically solve the economic model problem of service quality (QoS) problem, Security Control Problem and the sustainable development of present the Internet.Structure of the present invention comprises pre-configured the Internet infrastructure as shown in Figure 1, three layers of soft switching server in the switching architecture of address, three layers of access control gateway router in the switching architecture of address, and dynamic address user terminal.
The described method of this patent is based on existing internet protocol negotiation infrastructure.For domestic consumer, can provide no service quality to guarantee the application service of " doing one's best ".Can provide the application service that service quality guarantees and has fail safe to guarantee for the user that high performance demands is arranged.Simultaneously, the good economic model that has sustainable development based on Internet service of the present invention.
The present invention can implement in single autonomous territory, also can implement respectively in communicating pair autonomous territory separately; The present invention implements to be characterised in that in single autonomous territory and comprises following steps successively:
Method for exchanging internet address is characterized in that, described method is to implement in single autonomous territory, or implements according to the following steps in communicating pair autonomous territory separately:
Step (1): initialization
The Internet user is divided into the domestic consumer of magnanimity and some class high-performance users of limiting the quantity of, described high-performance user is meant the user of service quality and the contour performance application demand of fail safe, define the parameter of described performance application demand, the network service zone that comprises user's communication object place, opposite end, required bandwidth, corresponding service amount and the Service Quality Metrics that comprises needed time-delay, packet loss, shake;
The address that is used for this performance application demand is called high performance address, reserves some specific high performance address pieces and binds mutually with specific performance application demand parameter;
In each autonomous territory, dispose three layers of soft switching server at least, three layers of access control gateway router of subnet configuration at described high-performance user place; For the user who intends the application performance application disposes enhancement type dynamic address user terminal;
Default in the address database on three layers of soft switching server:
The high performance address number that all high-performance users need, this percent of call lost, blocking rate and route policy that is based on the traffic carrying capacity of high-performance user and permission calculates;
The bandwidth demand that the required performance application total bandwidth of all high-performance users is communicated by letter with single high performance network according to the high-performance user number of concurrent communication obtains;
Default cross-domain route in the link database on three layers of soft switching server, and bandwidth reserved:, corresponding high performance address is carried out BGP route static, cluster announce to selected cross-domain link for described performance application Route Selection;
In this autonomous territory at least one router the configuration Routing Protocol in case with this autonomous territory in all three layers of access control gateway routers set up neighborhood, make when the high performance address dynamic assignment is given described three layers of access control gateway router, the route of this high performance address correspondence is published on the routers all in this autonomous territory according to described Routing Protocol;
The signaling transmission control module comprises: reception of network-Network signaling or sending module and user-network signal receives or sending module, the described signaling transmission control module of initialization, and the scheduling controlling of wait command transmitting, signaling format comprises:
User-network signal includes: improper the withdrawing from of user ID, serial number, the common address of user's local terminal, the common address of Correspondent Node, user's local terminal high performance address section, this application demand bandwidth of user and user waited for duration and transfer instruction;
The network-Network signaling packet contains: duration and transfer instruction are withdrawed from user ID, serial number, user's local terminal high performance address section, maximum bandwidth and the improper wait of user;
Step (2): described high-performance user application according to the following steps successively uses high performance address:
Step (2.1): a certain high-performance user a among the autonomous territory X sends user-network signal UNI by described enhancement type dynamic address user terminal to described three layers of soft switching server, and high-performance user h carries out high performance communication among submit applications and the autonomous territory Z;
Step (2.2): described three layers of soft switching server are errorless in the identity of checking user a, and this moment this link on number of users also the end reach the upper limit of setting after, select a high performance address section dynamic assignment to give user a by address database, to comprise the high performance network address field by network-Network signaling NNI simultaneously, maximum bandwidth, the improper wait duration that withdraws from send three layers of access control gateway router of described user a place subnet in interior parameter; If condition does not meet, the then request of refusing user's a;
Step (2.3): described three layers of access control gateway router are configured to the high performance address that obtains dynamic assignment from three layers of soft switching server on the equipment interface that links to each other with described high-performance user place subnet, and by the bandwidth that maximum allows this interface are carried out flow restriction; By the described neighborhood of setting up with this autonomous territory Routing Protocol for preparing in advance, the route of the described high performance address section of dynamic assignment is published on the path in each management domain, start the improper timing of withdrawing from simultaneously;
Step (2.4): described three layers of access control gateway router notify three layers of soft switching server configuration to finish, and three layers of soft switching server are prepared user a is received charging by billing database; Three layers of soft switching server start the improper timing of withdrawing from;
Step (3): described high-performance user a finishes to use the performance application service successively according to the following steps:
Step (3.1): described high-performance user a notifies this performance application service of three layers of soft switching server to finish by described user-network signal UNI;
Step (3.2): described three layers of soft switching server reclaim corresponding high performance address, wait for that distributing to next requesting users uses, and revise configuration by the corresponding described three layers of access control gateway router of network-Network signaling NNI notice simultaneously;
Step (3.3): described three layers of access control gateway router stop the network interface configuration of corresponding high performance address, flow control configuration and route distribution;
Step (3.4): three layers of soft switching server stop to charge, based on notifying corresponding high-performance user corresponding to the unit interval bandwidth resources usage charges of certain class application service and the charging result of time product, the updating user data storehouse, address database and billing database, this section high performance address section discharges, and waits for that distributing to next requesting users uses.
Preferential selection at least one configuration of routers Routing Protocol in this autonomous territory in described step (1) is Internal BGP iBGP, or outer boundary Routing Protocol eBGP, or interior routing protocol IGP.
In described step (1), described high performance communication total bandwidth W＞B * N, N are described high-performance user number, and B is the bandwidth demand of single high performance network communication.
In described step (1), the maximum bandwidth that the single stream in common address can use is less than bandwidth that high performance address provided.
The experiment test result has reached the requirement of the present invention's expection.By distinguishing domestic consumer and high-performance user, be the high performance address bandwidth reserved, carry out access control according to application for high-performance user, dynamic assignment high performance address and corresponding charging, the application that systematically, through engineering approaches has successfully solved high-performance user provides service quality to guarantee that (QoS) and fail safe guarantee, and can have good economic model.
This patent module composition and intermodule relation as shown in Figure 2.Present specification describing method FB(flow block) as shown in Figure 3.The experiment test environment as shown in Figure 4.
Description of drawings
Fig. 1 internet address switched network system structure figure.
Fig. 2 internet address switching architecture module composition and intermodule relation.
Fig. 3 internet address switching network system workflow block diagram.
Fig. 4 experiment test environment network connects topological diagram.
Fig. 5 user a uses the experimental data of common address communication test.
Fig. 6 user a uses the experimental data of high performance address communication experiment.
Fig. 7 user b uses the experimental data of high performance address communication experiment.
Specific implementation process
The inventive method comprises 4 and constructs the module organic composition, i.e. and " pre-configured the Internet infrastructure ", " three layers of soft switching server ", " three layers of access control gateway router " and " dynamic address user terminal " are described below respectively.
(1) pre-configured the Internet infrastructure
The internet address switching architecture serves as the basic unit of implementing based on the agreement and the standard of present the Internet with autonomous territory.In autonomous territory, distinguish for domestic consumer and high-performance user according to demand, distribute common address for domestic consumer.Except distributing common address, also can distribute the high energy address to high-performance user, these high performance address define the network and the required bandwidth of application-specific at the both sides place of being communicated by letter, QoS parameters such as time-delay, packet loss, shake clearly.These high performance address are reserved in network, and are corresponding with required service, but not with specific user binding.
According to the traffic carrying capacity of high-performance user and the percent of call lost of permission, according to Erlang's formula
Calculate required maximum concurrent communication number of processes, wherein a is a traffic carrying capacity, and N is a concurrent user number, and E is a blocking rate.On this basis, according to the route policy, calculate required high performance address quantity.Its computing formula is: P=min (PIR, PAU-ceil (log
2N)), wherein P is required mask-length, and PIR is the cross-domain maximum mask-length that allows announcement, and PAU is 30 under the situation of IPv4, min (), ceil () and log
2() is respectively and gets minimum value, gets next integer value and be the canonical function of the logarithm at the end with 2.According to the bandwidth demand B that above-mentioned concurrent user number N communicates by letter with single high performance network, calculate required cross-domain bandwidth W, promptly select B * N≤W.
In autonomous territory, utilize the grade of service function (Service Class) of router, be reserved in bandwidth enough under the extreme case for the high performance address piece, promptly, all can guarantee required bandwidth no matter which high-performance user is high performance address distribute to.
In autonomous territory, select one or several routers and three layers of access control gateway router equipment to do route distribution configuration to each management domain, so that dynamically issue the routing iinformation of high performance address, the road reflector server that according to circumstances is preferably based on inner boundary Routing Protocol (iBGP) is as route distribution mechanism.
Between autonomous territory, select specific link, and on this link, utilize the grade of service function (ServiceClass) of router, reserve enough bandwidth for the high performance address piece, and high performance address block boundary Routing Protocol (BGP) route static, cluster is carried out in this path announce.
Adopt the quality of service configuration method and the RSVP method of standard on the present router, or quasi minimum state flow control method for Internet, in the territory or between the territory, carry out flow control for common address.
(2) three layers of soft switching server in the address exchanging method
Three layers of soft switching server in the switching architecture of address are special-purpose computer server systems.Each autonomous territory disposes three layers of soft switching server of one or more networkings.It is by signaling transmitting and scheduling module, the authenticating user identification module, and this territory and cross-domain link bandwidth are used statistical module, accounting module, territory administration module and control module are formed.Except that signaling transmitting and scheduling module, the core of each functional module is Database Systems, comprising: customer data base, address database, link database, access control gateway database and billing database.Signaling system comprises: user-network signal system (UNI) and network-Network signaling system (NNI).
Subscriber database stores user account number and authentication information, and with corresponding charge information opening relationships.Address date library storage high performance address, and concurrent several opening relationships of supporting with link and this address.The information of the cross-domain link of this autonomous territory reserved bandwidth of link data library storage and use the local terminal of this link and the common address realm of opposite end, and with address date opening relationships.The information of three layers of access control gateway router equipment of three layers of each high-performance user place subnet of this autonomous territory of access control gateway router database storage, and with user data opening relationships.Billing database and user data opening relationships.Three layers of soft switching server are accepted the request of the dynamic address user terminal of registration high-performance user by user-network signal (UNI), its parameter is: user account number and password, user's common address, the common address of high performance communication opposite end, the required bandwidth of high performance communication, the improper wait duration that withdraws from etc.The sample of the form of its XML language description is:
<uni>
＜customer id=" customerid "〉// user ID
</customer>
＜order id=" ordered "〉// serial number
</order>
＜metric name=" own-address "〉// the common address of user's local terminal
x.x.x.x
</metric>
＜metric name=" end-address "〉// common address, user opposite end
y.y.y.y
</metric>
＜metric name=" hp-prefix "〉// user's local terminal high performance address section
x.x.x.x/k
</metric>
＜metric name=" bandwidth " units=" Mbps "〉// the user's request bandwidth
30
</metric>
＜metric name=" ttl " units=" second "〉// the improper wait duration that withdraws from of user
3600
</metric>
＜metric name=" command "〉// instruction
confirm
</metric>
</uni>
Three layers of soft switching server common user database, link database, three layers of access control gateway router database authentication user's identity, whether the scope decision of examining common address of user's local terminal and common address, opposite end has three layers of access control gateway router equipment and corresponding link, whether can distribute high performance address according to the maximum concurrent number and the current concurrent number decision of corresponding address.As passing through checking, three layers of soft switching server are controlled corresponding three layers of access control gateway router equipment by network-Network signaling (NNI), and its parameter is: high performance address section, maximum bandwidth, the improper wait duration that withdraws from etc.The example of the form of its XML language description is:
<nni>
＜customer id=" customerid "〉// user ID
</customer>
＜order id=" ordered "〉// serial number
</order>
＜metric name=" prefix " unit=" IPv4 "〉// user's local terminal high performance address section
z.z.z.z/m
</metric>
＜metric name=" max_bandwidth " unit=" Mbps "〉// maximum bandwidth
30
</metric>
＜metric name=" ttl " units=" second "〉// the improper wait duration that withdraws from of user
3600
</metric>
＜metric name=" command "〉// instruction
active
</metric>
</nni>
(3) three layers of access control gateway router in the address exchanging method
Three layers of access control gateway router in the switching architecture of address are special routers.The module that routing function on the existing router loads relevant signaling transmission process realizes.It is by control module, interface module, and routing module and signaling transmitting and scheduling module four parts are formed.Control module comprises: improper timer and the webmaster client module of withdrawing from of user; Interface module comprises: network interface address configuration and flow-control module; Routing module comprises: Routing Protocol and route distribution module; Signaling transmitting and scheduling module is: network-Network signaling system (NNI) and user-network signal system.
Three layers of access control gateway router are provided with in the subnet of each high-performance user.According to statistics, Internet user's flow is the power rate and distributes, and promptly domestic consumer is most, and high-performance user is a minority, and therefore the total amount of three layers of access control gateway router is limited.
The route reflection server of the inner boundary Routing Protocol (iBGP) of the management domain in three layers of access control gateway router and the autonomous territory on all possible paths is set up neighborhood, therefore three layers of access control gateway router can on this equipment in the networking by being published in the autonomous territory in the management domain on all possible paths.
The subnet at each registration high-performance user place is equipped with three layers of access control gateway router of a networking, this equipment is communicated by letter with its three layers of soft switching server of management by network signal (NNI), distributes under its control and cancels high performance address, issues or write off relevant route, carries out or cancel port flow control.The sample of the form of its XML language description is:
<nni>
＜customer id=" customerid "〉// user ID
</customer>
＜order id=" ordered "〉// serial number
</order>
＜metric name=" prefix " unit=" IPv4 "〉// user's local terminal high performance address section
z.z.z.z/m
</metric>
＜metric name=" max_bandwidth " unit=" Mbps "〉// maximum bandwidth
30
</metric>
＜metric name=" ttl " units=" second "〉// the improper wait duration that withdraws from of user
3600
</metric>
＜metric name=" command "〉// instruction
active
</metric>
</nni>
(4) dynamic address user terminal
Dynamic address user terminal in the switching architecture of address is domestic consumer's terminal equipment of expansion.The dynamic address subscriber terminal equipment not only comprises all functions of present domestic consumer terminal, also comprises address choice and configuration module, user-network interface (UNI) signalling module etc.; Wherein UNI communicates by letter with soft switching server or three layers of access control gateway router are communicated by letter, and address choice and configuration module decision are when address that time application program is used.The sample of the form of its XML language description is:
<uni>
＜customer id=" customerid "〉// user ID
</customer>
＜order id=" ordered "〉// serial number
</order>
＜metric name=" own-address "〉// the common address of user's local terminal
x.x.x.x
</metric>
＜metric name=" end-address "〉// common address, user opposite end
y.y.y.y
</metric>
＜metric name=" hp-prefix "〉// user's local terminal high performance address section
x.x.x.x/k
</metric>
＜metric name=" bandwidth " units=" Mbps "〉// the user's request bandwidth
30
</metric>
＜metric name=" ttl " units=" second "〉// the improper wait duration that withdraws from of user
3600
</metric>
＜metric name=" command "〉// instruction
apply
</metric>
</uni>
User terminal with dynamic address can dispose a plurality of network addresss, wherein common address be arranged, by static configuration or dynamic-configuration (based on state such as DHCP or stateless) and high performance address.The dynamic address user terminal has user-network signal (UNI) module of standard, can communicate by letter with three layers of soft switching server in the switching architecture of address, and application or cancellation are for the use of high performance address.The dynamic address user terminal has under signaling drives, and the dynamic address configuration module is accomplished the address and used binding, and promptly common application is used common address, and performance application is used high performance address.
Test environment is built on real the Internet backbone network, and this end subscriber is the high-performance user of CERNET 2 different locations in the Pekinese, and the opposite end is the high-performance video server of TEIN2 Singapore node.Video Applications is used the DVTS system, and 1 road video is 30Mbps.Test environment as shown in Figure 4.
Because network bandwidth limitations, but the maximum utilized bandwidth of CERNET domestic consumer by TEIN2 is 10Mbps, therefore can't watch the video image that transmits from Singapore.It is CERNET that the territory, three layers of soft switching server place in the switching architecture of address is selected in this test, and the performance application concurrent process is 1.Have 2 three layers of access control gateway routers.BGP route policy PIR=24 according to CERNET and TEIN2.Adopt IPv4, the selected high performance address section of PAU=30 is 202.38.112.64/30.The address that attention is announced to TEIN2 static state, cluster is 202.38.112.0/24.The subnet gateway at 2 high-performance user places, Pekinese is respectively 202.112.35.34 and 202.38.97.253.This test is divided into three kinds of situations:
1) Pekinese's performance application user a uses common address to receive Singapore node DVTS video, as shown in Figure 5.The iBGP Router Reflector of noting autonomous territory AS4538 for three layers of access control gateway router neighbours 202.38.97.253 (performance application user a) and the bar number average that distributes of the high performance address of 202.38.35.34 (performance application user b) be 0 (as Fig. 5 (a)).Total route bar number in the autonomous territory is 14155 (as Fig. 5 (b)), and total route bar number that autonomous territory AS4538 is published to TEIN2 is 203 (as Fig. 5 (c)).(as Fig. 5 (d)) do not appear in high performance address section 202.38.112.64/30 in autonomous territory AS4538.Because bandwidth greater than 10Mbps can't be supported in common address, this moment video image quality very poor (as Fig. 1 in the annex).
2) Pekinese's high-performance user a application high performance address receives Singapore node DVTS video, as shown in Figure 6.At this moment, to three layers of soft switching server application high performance address, its content is high-performance user a by UNI:
<uni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12345 "〉// serial number
</order>
＜metric name=" own-address "〉// the common address of user's local terminal
202.38.97.254
</metric>
＜metric name=" end-address "〉// common address, user opposite end
202.179.252.102
</metric>
＜metric name=" bandwidth " units=" Mbps "〉// the user's request bandwidth
30
</metric>
＜metric name=" ttl " units=" second "〉// the improper wait duration that withdraws from of user
3600
</metric>
＜metric name=" command "〉// instruction
apply
</metric>
</uni>
Three layers of soft switching server is validated user by customer data base, link database, three layers of access control gateway router database and address database checking BJ-a, with the common address 202.38.97.254 coupling of local terminal, simultaneously corresponding subnet has disposed three layers of access control gateway router equipment, the common address 202.179.252.102 in opposite end has effective link can provide performance application, the maximum bandwidth 35Mbps that allows, corresponding high performance address section is 202.38.112.64/30, the maximum concurrent number of communication that allows is 1, and present concurrent number is 0.Therefore, three layers of soft switching server can allow user BJ-a to use high performance address 202.38112.64/30 communication.Three layers of soft switching server are notified three layers of access control gateway router equipment of user a place subnet by NNI.
<nni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12345 "〉// serial number
</order>
＜metric name=" prefix " unit=" IPv4 "〉// user's local terminal high performance address section
202.38.112.64/30
</metric>
＜metric name=" max_bandwidth " unit=" Mbps "〉// maximum bandwidth
35
</metric>
＜metric name=" ttl " units=" second "〉// the improper wait duration that withdraws from of user
3600
</metric>
＜metric name=" command "〉// instruction
Request
</metric>
</nni>
These three layers of access control gateway router equipment are implemented address assignment, flow control, and process such as route distribution is also replied three layers of soft switching server and is confirmed.
<nni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12346 "〉// serial number
</order>
＜metric name=" command "〉// instruction
Confirm
</metric>
</nni>
At this moment, three layers of soft switching server are notified Beijing user a by UNI, and begin to charge.
<uni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12346 "〉// serial number
</order>
＜metric name=" hp-prefix "〉// user's local terminal high performance address section
202.38.112.64/30
</metric>
＜metric name=" command "〉// instruction
Confirm
</metric>
</uni>
User a can begin performance application.As shown in Figure 6, (the bar number of performance application user's high performance address distribution a) is 1 to the iBGP Router Reflector of autonomous territory AS4538, but the bar number that the high performance address of 202.38.35.34 (performance application user b) is distributed is 0 (as Fig. 6 (a)) for three layers of access control gateway router neighbours 202.38.97.253.Total route bar number in the autonomous territory is 14156 (having increased by 1) (as Fig. 6 (b)), and total route bar number that autonomous territory AS4538 is published to TEIN2 is 203 (not increasing) (as Fig. 6 (c)).High performance address section 202.38.112.64/30 occurs in autonomous territory AS4538, and corresponding next jumped and be 202.38.97.253 (as Fig. 6 (d)).Owing to use high performance address, can support bandwidth, at this moment video image quality fine (as Fig. 2 in the annex) greater than 30Mbps.
User b also applies for using high performance address as this moment, notifies three layers of soft switching server by UNI.
<uni>
＜customer id=" BJ-b "〉// user ID
</customer>
＜order id=" 20001 "〉// serial number
</order>
＜metric name=" own-address "〉// the common address of user's local terminal
202.112.35.34
</metric>
＜metric name=" end-address "〉// common address, user opposite end
202.179.252.102
</metric>
＜metric name=" hp-prefix "〉// user's local terminal high performance address section
0.0.0.0/0
</metric>
＜metric name=" bandwidth " units=" Mbps "〉// the user's request bandwidth
30
</metric>
＜metric name=" ttl " units=" second "〉// the improper wait duration that withdraws from of user
3600
</metric>
＜metric name=" command "〉// instruction
apply
</metric>
</uni>
Three layers of soft switching server is validated user by customer data base, link database, three layers of access control gateway router database and address database checking BJ-b, with the common address 202.112.25.34 coupling of local terminal, simultaneously corresponding subnet has disposed three layers of access control gateway router equipment, the common address 202.179.252.102 in opposite end has effective link can provide performance application, the maximum bandwidth 35Mbps that allows, corresponding high performance address section is 202.38.112.64/30, the maximum concurrent number of communication that allows is 1, and present concurrent number is 1.Therefore, three layers of soft switching server can not distribute high performance address for user b.The service request of refusing user's b.
<uni>
＜customer id=" BJ-b "〉// customer ID
</customer>
＜order id=" 20002 "〉// serial number
</order>
＜metric name=" command "〉// instruction
Refuse
</metric>
</uni>
User b must wait for that certain hour asks once more.
When user a finishes high performance communication, be similar to said process, user a notifies three layers of soft switching server to cancel high performance address with UNI.
<uni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12347 "〉// serial number
</order>
＜metric name=" own-address "〉// the common address of user's local terminal
202.38.97.254
</metric>
＜metric name=" end-address "〉// common address, user opposite end
202.179.252.102
</metric>
＜metric name=" hp-prefix "〉// user's local terminal high performance address section
202.38.112.64/30
</metric>
＜metric name=" command "〉// instruction
Stop
</metric>
</uni>
Three layers of soft switching server are notified three layers of corresponding access control gateway router equipment with NNI.
<nni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12348 "〉// serial number
</order>
＜metric name=" prefix " unit=" IPv4 "〉// user's local terminal high performance address section
202.38.112.64/30
</metric>
＜metric name=" command "〉// instruction
Stop
</metric>
</nni>
The access control gateway device is cancelled high performance address, stops to announce that the road of high performance address has, and confirms to three layers of soft switching server by NNI.
<nni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12349 "〉// serial number
</order>
＜metric name=" command "〉// instruction
Confirm
</metric>
</nni>
Three layers of soft switching server are notified the user a with UNI, stop to charge, and expense is bandwidth * use duration.
<uni>
＜customer id=" BJ-a "〉// user ID
</customer>
＜order id=" 12348 "〉// serial number
</order>
＜metric name=" command "〉// instruction
Stop
</metric>
</uni>
3) another high-performance user of Pekinese b application high performance address receives Singapore node DVTS video.At this moment, high-performance user a has finished high performance communication.Similar above-mentioned 2) UNI and the communication process of NNI, user b can obtain communicating for the performance address, as shown in Figure 7.At this moment, (the bar number of performance application user's high performance address distribution a) is 0 to the iBGP Router Reflector of autonomous territory AS4538, but the bar number that the high performance address of 202.38.35.34 (performance application user b) is distributed is 1 (as Fig. 7 (a)) for three layers of access control gateway router neighbours 202.38.97.253.Total route bar number in the autonomous territory is 14156 (having increased by 1) (as Fig. 7 (b)), and total route bar number that autonomous territory AS4538 is published to TEIN2 is 203 (not increasing) (as Fig. 7 (c)).High performance address section 202.38.112.64/30 occurs in autonomous territory AS4538, and corresponding next jumped and be 202.112.35.34 (as Fig. 7 (d)).Owing to use high performance address, can support bandwidth, at this moment video image quality fine (as Fig. 3 in the annex) greater than 30Mbps.
Wherein high performance address is distributed to the course of work that user a and the variation of the relevant routing table of user b have clearly illustrated that the address switching architecture, three layers of soft switch, three layers of access control gateway router equipment and dynamic address user terminal role.The video image quality of common address can not meet the demands as we can see from the figure, and the video image quality of high performance address is fine.
Claims (4)
1. method for exchanging internet address is characterized in that, described method is to implement in single autonomous territory, or implements according to the following steps in communicating pair autonomous territory separately:
Step (1): initialization
The Internet user is divided into the domestic consumer of magnanimity and some class high-performance users of limiting the quantity of, described high-performance user is meant the user of service quality and the contour performance application demand of fail safe, define the parameter of described performance application demand, the network service zone that comprises user's communication object place, opposite end, required bandwidth, corresponding service amount and the Service Quality Metrics that comprises needed time-delay, packet loss, shake;
The address that is used for this performance application demand is called high performance address, reserves some specific high performance address pieces and binds mutually with specific performance application demand parameter;
In each autonomous territory, dispose three layers of soft switching server at least, three layers of access control gateway router of subnet configuration at described high-performance user place; For the user who intends the application performance application disposes enhancement type dynamic address user terminal;
Default in the address database on three layers of soft switching server:
The high performance address number that all high-performance users need, this percent of call lost, blocking rate and route policy that is based on the traffic carrying capacity of high-performance user and permission calculates;
The bandwidth demand that the required performance application total bandwidth of all high-performance users is communicated by letter with single high performance network according to the high-performance user number of concurrent communication obtains;
Default cross-domain route in the link database on three layers of soft switching server, and bandwidth reserved for described performance application Route Selection; To selected cross-domain link, corresponding high performance address is carried out BGP route static, cluster announce;
In this autonomous territory at least one router the configuration Routing Protocol in case with this autonomous territory in all three layers of access control gateway routers set up neighborhood, make when the high performance address dynamic assignment is given described three layers of access control gateway router, the route of this high performance address correspondence is published on the routers all in this autonomous territory according to described Routing Protocol;
The signaling transmission control module comprises: reception of network-Network signaling or sending module and user-network signal receives or sending module, the described signaling transmission control module of initialization, and the scheduling controlling of wait command transmitting, signaling format comprises:
User-network signal includes: improper the withdrawing from of user ID, serial number, the common address of user's local terminal, the common address of Correspondent Node, user's local terminal high performance address section, this application demand bandwidth of user and user waited for duration and transfer instruction;
The network-Network signaling packet contains: duration and transfer instruction are withdrawed from user ID, serial number, user's local terminal high performance address section, maximum bandwidth and the improper wait of user:
Step (2): described high-performance user application according to the following steps successively uses high performance address:
Step (2.1): a certain high-performance user a among the autonomous territory X sends user-network signal UNI by described enhancement type dynamic address user terminal to described three layers of soft switching server, and high-performance user h carries out high performance communication among submit applications and the autonomous territory Z;
Step (2.2): described three layers of soft switching server are errorless in the identity of checking user a, and after number of users does not reach the upper limit of setting yet on this link at this moment, select a high performance address section dynamic assignment to give user a by address database, to comprise the high performance network address field by network-Network signaling NNI simultaneously, maximum bandwidth, the improper wait duration that withdraws from send three layers of access control gateway router of described user a place subnet in interior parameter; If condition does not meet, the then request of refusing user's a;
Step (23): described three layers of access control gateway router are configured to the high performance address that obtains dynamic assignment from three layers of soft switching server on the equipment interface that links to each other with described high-performance user place subnet, and by the bandwidth that maximum allows this interface are carried out flow restriction; By the described neighborhood of setting up with this autonomous territory Routing Protocol for preparing in advance, the route of the described high performance address section of dynamic assignment is published on the path in each management domain, start the improper timing of withdrawing from simultaneously;
Step (2.4): described three layers of access control gateway router notify three layers of soft switching server configuration to finish, and three layers of soft switching server are prepared user a is received charging by billing database; Three layers of soft switching server start the improper timing of withdrawing from;
Step (3): described high-performance user a finishes to use the performance application service successively according to the following steps:
Step (3.1): described high-performance user a notifies this performance application service of three layers of soft switching server to finish by described user-network signal UNI;
Step (3.2): described three layers of soft switching server reclaim corresponding high performance address, wait for that distributing to next requesting users uses, and revise configuration by the corresponding described three layers of access control gateway router of network-Network signaling NNI notice simultaneously:
Step (3.3): described three layers of access control gateway router stop the network interface configuration of corresponding high performance address, flow control configuration and route distribution;
Step (3.4): three layers of soft switching server stop to charge, based on notifying corresponding high-performance user corresponding to the unit interval bandwidth resources usage charges of certain class application service and the charging result of time product, the updating user data storehouse, address database and billing database, this section high performance address section discharges, and waits for that distributing to next requesting users uses.
2. method for exchanging internet address according to claim 1, it is characterized in that, preferential selection at least one configuration of routers Routing Protocol in this autonomous territory in described step (1) is Internal BGP iBGP, or outer boundary Routing Protocol eBGP, or interior routing protocol IGP.
3. method for exchanging internet address according to claim 1 is characterized in that, in described step (1), described high performance communication total bandwidth W＞B * N, N are described high-performance user number, and B is the bandwidth demand of single high performance network communication.
4. method for exchanging internet address according to claim 1 is characterized in that, in described step (1), the maximum bandwidth that the single stream in common address can use is less than bandwidth that high performance address provided.
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| CN101567907B (en) * | 2009-05-22 | 2011-11-09 | 清华大学 | IPv6 address exchanging method for supporting cross-domain high-performance application |
| CN102752806B (en) * | 2012-06-26 | 2016-03-30 | 华为技术有限公司 | A kind of admittance control method and device |
| US9055112B2 (en) * | 2012-09-18 | 2015-06-09 | Amazon Technologies, Inc. | Dynamically allocating network addresses |
| CN103338486B (en) * | 2012-12-27 | 2015-12-23 | 上海华为技术有限公司 | Bandwidth allocation methods and system |
| CN113452811B (en) * | 2021-08-30 | 2022-01-25 | 阿里巴巴达摩院(杭州)科技有限公司 | Data communication method, device, computer storage medium and system |
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