CN101436965B - Detection method, apparatus and system sharing access client terminal quantity - Google Patents
Detection method, apparatus and system sharing access client terminal quantity Download PDFInfo
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- CN101436965B CN101436965B CN2008102177778A CN200810217777A CN101436965B CN 101436965 B CN101436965 B CN 101436965B CN 2008102177778 A CN2008102177778 A CN 2008102177778A CN 200810217777 A CN200810217777 A CN 200810217777A CN 101436965 B CN101436965 B CN 101436965B
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Abstract
The embodiment of the invention discloses a method for detecting the number of clients in shared access, a device and a system thereof. The method for detecting the number of the clients in shared access comprises the following steps: receiving a network data packet sent by a client under a public network IP, wherein the network data packet contains characteristic information reflecting the client; acquiring a maximum transmission unit value of the client under the public network IP according to the characteristic information of the client, wherein the maximum transmission unit value of each client under the public network IP uniquely identifies each client under the public network IP; and determining the number of the client under the public network IP according to the number of the maximum transmission unit value of the client. Through the proposal, the number of the client under the public network IP can be acquired, thereby facilitating the management of an administrator.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of detection method and system of shared access main frame.
Background technology
Along with the Internet rapid development of Internet; Online rich in natural resources is producing huge attraction to more and more users; How under the situation of IP address depletion, to insert the Internet the Internet, visit Internet the Internet becomes more and more users' demand.
See also Fig. 1, for having the schematic network structure of network address translation (Network AddressTranslation is designated hereinafter simply as NAT) in the prior art.Wherein, the integrated function of NAT in the router one 0, this router one 0 is connected with main frame 1, main frame 2 and main frame 3, and like this, router one 0, main frame 1, main frame 2 and main frame 3 have been formed a sub-net.This main frame 1, main frame 2 and main frame 3 use the subnet of privately owned address to insert the Internet the Internet through router one 0; Wherein disposed a global effective address G (being public network IP address) in this router one 0, inner main frame 1, main frame 2 and the main frame 3 of subnet uses privately owned address.Source address in outer the packet of 0 pair of main frame 1 of router one, main frame 2 and main frame 3 is changed; With this outer source address of sending out in the packet of global effective address G replacement; Thereby insert the Internet the Internet; In like manner, router one 0 receives packet the destination address of packet with the privately owned address replacement of main frame 1, main frame 2 and main frame 3.From the outside, the router one 0 with nat feature is similar to the logical main frame of a Daepori, and all packets are all from this router one 0, and all responses also turn back to this router one 0.Therefore, in this way, main frame 1, main frame 2 and main frame 3 can be through router one 0 visit Internet the Internets.
The inventor is in realizing process of the present invention; Find in the prior art; Router one 0 with nat feature can be alleviated the internet-ip address problem of shortage, but from the angle of network management, this router one 0 with nat feature lets main frame 1, main frame 2 and main frame 3 visit the Internet the Internet simultaneously; Externally but show as the logical main frame of a Daepori; Like this, the keeper has no way of learning the quantity through the access main frame of this router one 0 visit Internet the Internet, is not easy to the keeper to visit the management of the access main frame of Internet through this router one 0.
Summary of the invention
The embodiment of the invention provides a kind of detection method, device and system of shared access client terminal quantity, with the number of client under the detection public network IP, thereby is convenient to the Admin Administration.
The embodiment of the invention provides a kind of the detection to share the method that inserts client terminal quantity, comprising:
Receive the network packet that client is sent under the public network IP, comprise the characteristic information that reflects client in this network packet, the characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet;
According to the maximum transmission unit value of client under this public network IP of characteristic information acquisition of this client, wherein, each client under this public network IP of maximum transmission unit value unique identification of each client under this public network IP;
Confirm the number of client under this public network IP according to the number of the maximum transmission unit value of this client.
The embodiment of the invention also provides a kind of detection system of shared access client terminal quantity, comprising:
The end-probing device; The network packet that is used for sending according to client under the public network IP reflects the characteristic information of client; Determine whether and to revise the client maximum transmission unit value to client under this public network IP; And the client that will revise maximum transmission unit value reports transmitting apparatus under the program, and the characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet;
Transmitting apparatus under this program; Be used for the client of needs modification maximum transmission unit value is made amendment to the maximum transmission unit value of this client based on the intrinsic information of this client; Wherein, each client under this public network IP has different maximum transmission unit values;
Share and insert checkout gear; Be used to receive the network packet of the characteristic information of the reflection client that client is sent under the public network IP; And obtain the maximum transmission unit value of each client of unique identification under this public network IP according to the characteristic information of this network packet, confirm the number of client under this public network IP according to the number of the maximum transmission unit value of client under this public network IP.
The embodiment of the invention provides a kind of detection system of shared access client terminal quantity again, comprising:
The district management device is used to receive the request that the client maximum transmission unit value is revised, and searches maximum transmission unit value information record, and available maximum transmission unit value is sent to client, and wherein, each client has different maximum transmission unit values;
Share and insert checkout gear; Be used to receive the network packet of the characteristic information of the reflection client that client is sent under the public network IP; And obtain the maximum transmission unit value of each client of unique identification under this public network IP according to the characteristic information of this network packet; Confirm the number of client under this public network IP according to the number of the maximum transmission unit value of client under this public network IP, the characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet.
The embodiment of the invention also provides a kind of shared access checkout gear, comprising:
Receiving element: be used to receive the network packet that client is sent under the public network IP; Comprise the characteristic information that reflects client in this network packet, the characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet;
Computing unit: be used for obtaining the maximum transmission unit value of each client under this public network IP, each client under this public network IP of maximum transmission unit value unique identification of each client under this public network IP according to the characteristic information of this client;
Confirm the unit: the number that is used for confirming client under this public network IP according to the number of the maximum transmission unit value of this client.
Can find out that by last technical scheme the MTU value corresponding through each client under this public network IP is different, just can obtain the number of client under this public network IP based on the number of MTU value under this public network IP of statistics.Therefore, the keeper can draw the number that inserts client under this public network IP based on the number of MTU value, makes things convenient for the Admin Administration.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 has network address translation and gets schematic network structure for a kind of in the prior art;
Fig. 2 is the detection method schematic flow sheet of a kind of shared access client terminal quantity of the embodiment of the invention;
Fig. 3 is the detection method schematic flow sheet of a kind of shared access client terminal quantity of the embodiment of the invention;
Fig. 4 is the detection method receiving network data bag schematic flow sheet before of a kind of shared access client terminal quantity of the embodiment of the invention;
Fig. 5 is the detection system sketch map of a kind of shared access client terminal quantity of the embodiment of the invention;
Fig. 6 shares for the embodiment of the invention and inserts the checkout gear sketch map;
Fig. 7 is an embodiment of the invention end-probing schematic representation of apparatus;
Fig. 8 is the detection system sketch map of a kind of shared access client terminal quantity of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
In communication network; The transmission of data message all is based on certain communication protocol in the network packet; Data message all has the restriction of a length in the process of transmission, this certain in a kind of communication protocol above one deck the maximum data message size that can pass through just be called MTU MTU (MaximumTransmission Unit).
Wherein, MTU MTU is relevant with maximum transfer size MSS (Maximum Segment Size).Maximum transfer size MSS is meant the maximum data segmentation that the tcp data bag in the network packet can transmit at every turn.The MSS value of each client is relevant with the MTU value of each client, so the size of MSS value can reflect the size of MTU value, the size of MSS value adds the size of packet IP head and the size of TCP head, is the size of MTU value.Like MTU value under the total main frame default situations of: Ethernet is 1500 bytes, and the MSS value is 1460 bytes, and the size that IP head and TCP head are added up is generally 40 bytes.
The detection method of client terminal quantity is through revising the MTU value of each client under the public network IP under a kind of public network IP of the embodiment of the invention; Make that each client has different MTU values under the public network IP, thereby can confirm the number of client under the public network IP according to the number of MTU value under the public network IP.
See also Fig. 2, the detection method of a kind of shared access client terminal quantity of the embodiment of the invention, this method comprises:
Step 101: receive the network packet that the public network IP client is sent, comprise the characteristic information that reflects client in this network packet;
Step 201: according to the MTU value of each client under this public network IP of unique identification under this public network IP of characteristic information acquisition of this client;
Step 301: the number of confirming client under this public network IP according to the number of the MTU value of this public network IP client.
By on can find out that the embodiment of the invention just can obtain the number of client under this public network IP through the corresponding MTU value difference of each client under this public network IP based on the number of MTU value under this public network IP.Therefore, the keeper can draw the number that inserts client under this public network IP based on the number of MTU value, makes things convenient for the Admin Administration.
Wherein, the characteristic information of this client comprises: the size of the size of data maximum transfer size MSS, IP head and TCP head in the network packet.
Further; Characteristic information to client comprises the size of data maximum transfer size MSS, IP head in the network packet and the big or small this mode of TCP head; See also Fig. 3; Before the MTU value step according to each client under this public network IP of characteristic information acquisition of this client, also comprise:
Obtain the MTU value of client according to the size of the size of data maximum transfer size MSS, IP head in the network packet and TCP head; The MTU value of this client compares with the MTU value of the client of acquiescence, confirms that according to comparative result the MTU value of client is modified.
Further, confirm that according to comparative result the MTU value of client is modified, can be unequal with the MTU value of the client of acquiescence for: the MTU value of client, then the MTU value of definite client is modified;
Wherein, when the MTU value of client equated with the MTU value of the client of acquiescence, the MTU value that can confirm as client was not modified.
When the MTU of client value is not modified, can pass through predetermined algorithm according to the intrinsic information of client under the public network IP, obtain the MTU value of unique identification client, see also the step 2012 among Fig. 3.
By on can find out, through the step 2011 among Fig. 3, through in the packet Network Based the reflection client host characteristic information, just can confirm whether the MTU value of client is modified.
Need to prove that the MTU value of the above-mentioned client of mentioning is unequal with the MTU value of the client of acquiescence, and the MTU value of client equates there is certain error with the MTU value of the client of acquiescence.
Wherein, the intrinsic information of this client is the differentiation information of client, and promptly the intrinsic information of client is different under the public network IP.The intrinsic information of this client can be the NIC address MAC (Media Access Control) of client, also can be the ID (Identification) of CPU in the client, and the embodiment of the invention is not limited thereto.
Wherein, predetermined algorithm can be hash algorithm, like hash function, i.e. and Hash mathematical equation.
Further; Intrinsic information according to client under the public network IP passes through predetermined algorithm; Obtain the unique identification client the MTU value can for: according to the Hash mathematical equation, the ID of CPU in the NIC address of client or the client is converted into number range in 576～1500 MTU value.Like this, client can just can obtain the MTU value of each client of unique identification according to the intrinsic information of client self under this public network IP through predetermined algorithm.
Through said method, client can have the MTU value of unique identification client under this public network IP.Like this, under this public network IP, can obtain the number of client under this public network IP according to the number of different MTU values.
Be example below with the Ethernet, the detection method of a kind of shared access host number of the foregoing description described:
Under public network IP, the MTU value is 1500 under each client default situations of Ethernet.At first receive this public network IP lower network packet; MTU value according to characteristic information (that is: the size of the size of maximum transfer size MSS, IP head and TCP head) the computing client end of the reflection client in this network packet; Compare according to the MTU value of client and the 1500MTU value under the client default situations; When the MTU of client value is 1500; Then the MTU value of client is not modified, and passes through predetermined algorithm according to the MAC Address of client or the ID of CPU, obtains a new MTU value.Because the ID of the MAC Address of this new client MTU value and client or CPU is relevant, so the MTU value that this new MTU value is the unique identification client.
By last, according to there being what MTU values can confirm what clients are arranged under this public network IP under this public network IP, thereby be convenient to the Admin Administration.
See also Fig. 4, before the network packet that step 101 reception public network IP client is sent, also comprise step:
Step 3011: receive the request that client MTU value is revised;
Step 3012:, search MTU value information record, and available MTU value is sent to client according to the request that this client MTU value is revised.
Wherein, MTU value information record can be stored in the memory cell.
Wherein, Each MTU value in the MTU value information record is different; Already used MTU value of client and untapped MTU value have been write down in the MTU value information record; Can untapped MTU value be sent to client through searching MTU value information record, thereby can make this client have the MTU value of this client of unique identification.
By on can find out, can make client have the MTU value of unique identification client through said method.Number based on the MTU value just can be confirmed the number of this client, thereby is convenient to the Admin Administration.
Further, based on the request that this client MTU value is revised, the MTU value information record that inquiry is stored, and available MTU value sent to after the client, can also comprise:
Step 3013:, upgrade MTU value information record according to the MTU value that sends to client.
By on can find out that client is sent the MTU value and revised request, the request of client-based MTU value modification is searched MTU value information record, and available MTU value is returned to client, thereby can make this client have different MTU values.
Wherein, to step 3011, be to send the request that the MTU value is revised by client, therefore, need in client, installing M TU value revise the program of asking.
By on can find out that client has the MTU value of unique identification client under the public network IP, like this, under this public network IP, can obtain the number of client under this public network IP according to the number of different MTU values, thereby be convenient to the Admin Administration.
Need to prove,, just can obtain the quantity of client under this public network IP under this public network IP of MTU value unique identification of each client under the situation of each client for the detection method of a kind of shared access client terminal quantity of the foregoing description.When each client under this public network IP of MTU value unique identification of client under this public network IP, can obtain the quantity of client under this public network IP according to step 101-step 301; When the MTU value of client under this public network IP equates with the MTU value of acquiescence, can revise the MTU value of client according to predetermined algorithm through the intrinsic information of client.Perhaps before the network packet that reception public network IP client is sent, revise client MTU value through step 3011-3012.
In a word, by on can find out that the embodiment of the invention just can obtain the number of client under this public network IP through the corresponding MTU value difference of each client under this public network IP based on the number of MTU value under this public network IP.Therefore, the keeper can draw the number that inserts client under this public network IP based on the number of MTU value, makes things convenient for the Admin Administration.
To said method embodiment, the embodiment of the invention also provides a kind of detection system of shared access client terminal quantity.See also Fig. 5, the detection system of a kind of shared access client terminal quantity of the embodiment of the invention comprises:
End-probing device 200; The network packet that is used for sending based on client under the public network IP reflects the characteristic information of client; Determine whether and to revise client MTU value to client under this public network IP, and the client that will revise the MTU value reports transmitting apparatus 300 under the program;
Transmitting apparatus 300 under the program, are used for the client of needs modification MTU value is made amendment to the MTU value of this client according to the intrinsic information of this client, and wherein, each client under this public network IP has different MTU values;
Share and insert checkout gear 100; Be used to receive the network packet of the characteristic information of the reflection client that client is sent under the public network IP; And obtain the MTU value of each client of unique identification under this public network IP according to the characteristic information of this network packet, confirm the number of client under this public network IP according to the number of the MTU value of client under this public network IP.
By on can find out; The client that the detection system of a kind of shared access client terminal quantity of the embodiment of the invention will be revised the MTU value through end-probing device 200 reports transmitting apparatus 300 under the program; The MTU value of this client is made amendment according to the intrinsic information of client through 300 pairs of clients that need to revise the MTU value of transmitting apparatus under the program; Like this; Share inserting checkout gear 100 can confirm the number of client under this public network IP according to the number of the MTU value of client under this public network IP, thereby is convenient to the Admin Administration.
Wherein, the intrinsic information of this client is the differentiation information of client, and promptly the intrinsic information of client is different under the public network IP.The intrinsic information of this client can be the NIC address MAC (Media Access Control) of client, also can be the ID (Identification) of CPU in the client, and the embodiment of the invention is not limited thereto.
According to the intrinsic information of this client to the MTU value of this client make amendment can for: through predetermined algorithm, obtain the MTU value of unique identification client according to the intrinsic information of client under the public network IP.
Wherein, predetermined algorithm can be hash algorithm, like hash function, i.e. and Hash mathematical equation.
Further, according to the intrinsic information of this client to the MTU value of this client make amendment can for: according to the Hash mathematical equation, the ID of CPU in the NIC address of client or the client is converted into number range in 576～1500 MTU value.Like this, client can just can obtain the MTU value of each client of unique identification according to the intrinsic information of client self under this public network IP through predetermined algorithm.
Wherein, see also Fig. 6, this is shared and inserts checkout gear 100, comprising:
Receiving element 30: be used to receive the network packet that client is sent under the public network IP, comprise the characteristic information that reflects client in this network packet;
Computing unit 50: be used for obtaining the MTU value of each client under this public network IP, each client under this public network IP of MTU value unique identification of each client under this public network IP according to the characteristic information of this client;
Confirm unit 70: the number that is used for confirming client under this public network IP according to the number of the MTU value of this client.
Wherein, a kind of executive agent of sharing step 101, step 201 and step 301 in the method that inserts client terminal quantity that detects can be shared access checkout gear 100 for this.
By on can find out that a kind of shared access checkout gear 100 of the embodiment of the invention just can obtain the number of client under this public network IP through the corresponding MTU value difference of each client under this public network IP based on the number of MTU value under this public network IP.Therefore, the keeper can draw the number that inserts client under this public network IP based on the number of MTU value, makes things convenient for the Admin Administration.
Wherein, the characteristic information of this client comprises: the size of the size of data maximum transfer size MSS, IP head and TCP head in the network packet.
Further, see also Fig. 7, this end-probing device 200 comprises:
Receiving element 21 is used for receiving the characteristic information of client is sent under the public network IP network packet reflection client;
Judging unit 23 is used for determining whether that according to the characteristic information of reflection client needs are to client modification client MTU value under this public network IP;
Wherein, the characteristic information of this client comprises: the size of the size of data maximum transfer size MSS, IP head and TCP head in the network packet.
Wherein, according to the characteristic information of reflection client determine whether needs to client under this public network IP revise client MTU value can for:
Obtain the MTU value of client based on the size of the size of data maximum transfer size MSS, IP head and TCP head; The MTU value of this client compares with the MTU value of the client of acquiescence; Unequal when the MTU of this client value with the MTU value of the client of acquiescence, confirm that then the MTU value of client is modified;
When the MTU of this client value equates that with the MTU value of the client of acquiescence the MTU value that can confirm as client is not modified.
By on can find out that receive the network packet that client is sent under the public network IP through end-probing device 200, the characteristic information of reflection client compares with the MTU value of acquiescence in the packet Network Based, can draw the client of needs modification MTU value.
It is understandable that; Transmitting apparatus 300 can divide and is arranged under end-probing device 200 in a kind of detection system of shared access client terminal quantity and the program; Also can transmitting apparatus 300 under end-probing device 200 and the program be integrated in one, the embodiment of the invention is not limited thereto.
In a word; The MTU value that can the client under this public network IP be had the unique identification client through the detection system of a kind of shared access client terminal quantity of the foregoing description; Number according to the MTU value of client under this public network IP is confirmed the number of client under this public network IP, thereby is convenient to the Admin Administration.
Further, see also Fig. 8, the embodiment of the invention provides a kind of detection system of shared access client terminal quantity again.Should share the detection system that inserts client terminal quantity comprises:
Share and insert checkout gear 100; Be used to receive the network packet of the characteristic information of the reflection client that client is sent under the public network IP; And obtain the MTU value of each client of unique identification under this public network IP according to the characteristic information of this network packet, confirm the number of client under this public network IP according to the number of the MTU value of client under this public network IP.
By on can find out that the detection system of a kind of shared access client terminal quantity of the embodiment of the invention sends to client through district management device 400 with available MTU value.Should share access checkout gear 100 and just can confirm the number of client under this public network IP, thereby be convenient to the Admin Administration based on the number of MTU value under the public network IP.
Further, MTU value information record can be stored in the memory cell, and this district management device 400 is according to sending to client MTU value, MTU value information record in the updated stored unit.
Wherein, the characteristic information of this client comprises: the size of the size of data maximum transfer size MSS, IP head and TCP head in the network packet.
Wherein, continuous see also Fig. 8, this district management device 400 comprises:
Receiving element 41 is used to receive the request that client MTU value is revised;
Need to prove; Receive the request that client MTU value is revised at district management device 400; Can client be installed in client and revise MTU value program, in the time of can guaranteeing that like this client connects Internet, need to send the request that client MTU value is revised to district management device 400 earlier.
Wherein, the executive agent of step 3011, step 3012 and the step 3013 in a kind of detection method of shared access client terminal quantity can be this district management device 400.
Further, this district management device 400 also comprises: updating block 47 is used for according to the MTU value that replies to client, MTU information record in the updated stored unit 45.
Need to prove; Continuous see also Fig. 8, the private ip network of being made up of client has constituted a Local Area Network, and this Local Area Network is provided with district management device 400; Client in this Local Area Network have only revised the MTU value through this district management device 400 after; Just can make client pass through this district management device, share the online gateway through the zone then the private ip of client is converted into publicly-owned IP, the interior client of this Local Area Network is connected with Internet.
Should share access checkout gear 100 and receive the network packet that client is sent under the public network IP (the online gateway is shared in the zone), just can confirm the number of client based on the number of MTU value under this public network IP.
Like this, client is sent the MTU value and is revised request in the Local Area Network, according to the request of the MTU value modification of client in this Local Area Network; The MTU value information record that inquiry is stored; And available MTU value returned to client, and then, MTU value information record in the updated stored unit.Like this, when another client in this Local Area Network is sent MTU value modification request, can guarantee that different client side has different MTU values in this Local Area Network based on untapped MTU value of MTU value information record distribution.
Wherein, this Local Area Network can be enterprise, school, regional local area network (LAN) such as sub-district.
It is understandable that; District management device 400 among Fig. 8 also can layout be shared online gateway and shared the access between the checkout gear 100 in the zone; Like this; The request that this client MTU value is revised need be passed through the zone and share the request that the online gateway revises this client MTU value and be transmitted to this district management device 400, and the zone is shared the gateway of surfing the Net and also need the MTU value that district management device 400 sends to client be transmitted to client then.The embodiment of the invention is not limited thereto.
Wherein, continuous see also Fig. 6, the embodiment of the invention also provides a kind of shared access checkout gear 100, comprising:
Receiving element 30: be used to receive the network packet that client is sent under the public network IP, comprise the MTU value tag information that reflects client in this network packet;
Computing unit 50: be used for MTU value, each client under this public network IP of MTU value unique identification of each client under this public network IP according to each client under this public network IP of MTU value tag information acquisition of this client;
Confirm unit 70: the number that is used for confirming client under this public network IP according to the number of the MTU value of this client.
Wherein, a kind of executive agent of sharing step 101, step 201 and step 301 in the method that inserts client terminal quantity that detects can be shared access checkout gear 100 for this.
By on can find out that a kind of shared access checkout gear 100 of the embodiment of the invention just can obtain the number of client under this public network IP through the corresponding MTU value difference of each client under this public network IP based on the number of MTU value under this public network IP.Therefore, the keeper can draw the number that inserts client under this public network IP based on the number of MTU value, makes things convenient for the Admin Administration.
Need to prove; In a kind of district management device 400 of the embodiment of the invention; Memory cell 45 can be included in the district management device 400, also can be not included in this device 400, can take plug-in mode perhaps to use the memory cell in existing equipment or the device.The embodiment of the invention does not limit this.
It is understandable that the client under the public network IP in the foregoing description can directly be connected with Internet through publicly-owned IP for: client; Also can through the router with nat feature the client private ip be converted into publicly-owned IP client is connected with Internet for: client connects through the router with nat feature, the embodiment of the invention is not limited thereto.
It is understandable that; Detection system for a kind of shared access client terminal quantity of the foregoing description; Also can increase by a data forwarding device in the public network IP exit; This data forwarding device can be transmitted to network packet to share and insert checkout gear 100, also can be transmitted to end-probing device 200.Wherein, this data forwarding device can be existing data forwarding device.One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (RandomAccess Memory, RAM) etc.
The above is merely several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the present invention and do not break away from the spirit and scope of the present invention according to application documents are disclosed.
Claims (8)
1. share the detection method that inserts client terminal quantity for one kind, it is characterized in that, comprising:
Receive the network packet that client is sent under the public network IP; Comprise the characteristic information that reflects client in the said network packet, the characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet;
Obtain the maximum transmission unit value of client under the said public network IP according to the characteristic information of said client, wherein, each client under the said public network IP of maximum transmission unit value unique identification of each client under the said public network IP;
Confirm the number of client under the said public network IP according to the number of the maximum transmission unit value of said client.
2. share to insert the detection method of client terminal quantity according to claim 1, it is characterized in that, obtain to comprise before the maximum transmission unit value step of client under the said public network IP according to the characteristic information of said client:
Obtain the client maximum transmission unit value according to the size of data maximum transfer size MSS, IP head in the network packet and the size of TCP head; The maximum transmission unit value of the client of said client maximum transmission unit value and acquiescence compares; Unequal when the maximum transmission unit value that the maximum transmission unit value and the client of client are given tacit consent to, confirm that then the maximum transmission unit value of client is modified.
3. share the detection method that inserts client terminal quantity according to claim 1, it is characterized in that, receive before the public network IP lower network packet step, comprising:
Receive the request that the client maximum transmission unit value is revised;
According to the request that said client maximum transmission unit value is revised, search maximum transmission unit value information record, and available maximum transmission unit value is sent to client.
4. like the detection method of the said shared access client terminal quantity of claim 3; It is characterized in that,, search maximum transmission unit value information record according to the request that said client maximum transmission unit value is revised; And available maximum transmission unit value sent to after the client step, also comprise:
According to the maximum transmission unit value that sends to client, upgrade maximum transmission unit value information record.
5. share the detection system that inserts client terminal quantity for one kind, it is characterized in that, comprising:
The end-probing device; The network packet that is used for sending according to client under the public network IP reflects the characteristic information of client; Determine whether and need revise the client maximum transmission unit value to client under the said public network IP, and the client that will revise maximum transmission unit value reports transmitting apparatus under the program, the characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet; Wherein, Said end-probing device comprises: receiving element is used for receiving the characteristic information of client is sent under the public network IP network packet reflection client; Judging unit is used for determining whether that according to the characteristic information of reflection client needs are to client modification client maximum transmission unit value under the said public network IP; Report the unit, the client that is used for needs are revised maximum transmission unit value reports transmitting apparatus under the said program;
Transmitting apparatus under the said program; Be used for the client of needs modification maximum transmission unit value is made amendment to the maximum transmission unit value of said client based on the intrinsic information of said client; Wherein, each client under the said public network IP has different maximum transmission unit values;
Share and insert checkout gear; Be used to receive the network packet of the characteristic information of the reflection client that client is sent under the public network IP; And obtain the maximum transmission unit value of each client of unique identification under the said public network IP according to the characteristic information of said network packet; Confirm the number of client under the said public network IP according to the number of the maximum transmission unit value of client under the said public network IP, wherein, said shared access checkout gear; Comprise: receiving element: be used to receive the network packet that client is sent under the public network IP, comprise the characteristic information that reflects client in the said network packet; Computing unit: be used for obtaining the maximum transmission unit value of each client under the said public network IP, each client under the said public network IP of maximum transmission unit value unique identification of each client under the said public network IP according to the characteristic information of said client; Confirm the unit: the number that is used for confirming client under the said public network IP according to the number of the maximum transmission unit value of said client.
6. share the detection system that inserts client terminal quantity for one kind, it is characterized in that, comprising:
The district management device is used to receive the request that the client maximum transmission unit value is revised, and searches maximum transmission unit value information record; And available maximum transmission unit value sent to client, wherein, each client has different maximum transmission unit values; Wherein, The district management device comprises: receiving element is used to receive the request that the client maximum transmission unit value is revised; Query unit is used for revising according to said client the request of MTU, inquires about maximum transmission unit value information record, and available maximum transmission unit value is replied to client;
Share and insert checkout gear; Be used to receive the network packet of the characteristic information of the reflection client that client is sent under the public network IP; And obtain the maximum transmission unit value of each client of unique identification under the said public network IP according to the characteristic information of said network packet; Confirm the number of client under the said public network IP according to the number of the maximum transmission unit value of client under the said public network IP; The characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet, wherein, said shared access checkout gear; Comprise: receiving element: be used to receive the network packet that client is sent under the public network IP, comprise the characteristic information that reflects client in the said network packet; Computing unit: be used for obtaining the maximum transmission unit value of each client under the said public network IP, each client under the said public network IP of maximum transmission unit value unique identification of each client under the said public network IP according to the characteristic information of said client; Confirm the unit: the number that is used for confirming client under the said public network IP according to the number of the maximum transmission unit value of said client.
7. the detection system of shared access client terminal quantity as claimed in claim 6 is characterized in that, said district management device also comprises:
Updating block is used for upgrading the information record of maximum transmission unit value according to the maximum transmission unit value that replies to client.
8. share the access checkout gear for one kind, it is characterized in that, comprising:
Receiving element: be used to receive the network packet that client is sent under the public network IP; Comprise the characteristic information that reflects client in the said network packet, the characteristic information of said client comprises: the size of data maximum transfer size MSS, IP head and TCP head in the network packet;
Computing unit: be used for obtaining the maximum transmission unit value of each client under the said public network IP, each client under the said public network IP of maximum transmission unit value unique identification of each client under the said public network IP according to the characteristic information of said client;
Confirm the unit: the number that is used for confirming client under the said public network IP according to the number of the maximum transmission unit value of said client.
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| CN2008102177778A CN101436965B (en) | 2008-11-29 | 2008-11-29 | Detection method, apparatus and system sharing access client terminal quantity |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101631052B (en) * | 2009-08-25 | 2012-09-05 | 杭州华三通信技术有限公司 | Method and device for detecting number of access terminals |
| CN102025567A (en) * | 2010-12-13 | 2011-04-20 | 成都市华为赛门铁克科技有限公司 | Sharing access detection method and related device |
| CN102594846B (en) * | 2012-04-05 | 2015-10-07 | 北京网御星云信息技术有限公司 | A kind of shared access management algorithm based on IP header and system |
| CN103650457B (en) * | 2013-06-26 | 2016-09-28 | 华为技术有限公司 | The detection method of a kind of shared access, equipment and terminal unit |
| CN106664223B (en) * | 2015-06-18 | 2020-03-20 | 华为技术有限公司 | Method and device for detecting number of shared access hosts |
| CN106506253B (en) * | 2016-09-08 | 2020-04-14 | 深圳先进技术研究院 | System and method for counting number of online clients based on TCP/IP communication protocol |
| CN109639628A (en) * | 2018-10-26 | 2019-04-16 | 锐捷网络股份有限公司 | Private connects behavioral value method, the network equipment, system and storage medium |
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| CN101132412A (en) * | 2007-09-26 | 2008-02-27 | 杭州华三通信技术有限公司 | Method, device and system for negotiating message length in iSCSI system |
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