CN105610994A - IP address assignment method, coaxial mediation converter (CMC) and system - Google Patents
IP address assignment method, coaxial mediation converter (CMC) and system Download PDFInfo
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- CN105610994A CN105610994A CN201410689892.0A CN201410689892A CN105610994A CN 105610994 A CN105610994 A CN 105610994A CN 201410689892 A CN201410689892 A CN 201410689892A CN 105610994 A CN105610994 A CN 105610994A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
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Abstract
The invention discloses an IP address assignment method, a coaxial mediation converter (CMC) and a system. An IP port is configured on the CMC, a CM (Cable Modem) and CPE (Customer Premise Equipment) with the same server are bound under the IP port, and a CM DHCP (Dynamic Host Configuration Protocol) server and a CPE DHCP server for CM IP address assignment and CPE IP address assignment respectively are configured for the IP port; the CMC receives a DHCP discovery message sent by the CM under the IP port and judges whether the DHCP discovery message is initiated by the CM, if yes, the DHCP discovery message is sent to the CM DHCP server, and the CM DHCP server assigns an IP address for the CM according to the received DHCP discovery message; and if not, the DHCP discovery message is initiated by the CPE, the DHCP discovery message is sent to the CPE DHCP server, and the CPE DHCP server assigns an IP address for the CPE according to the received DHCP discovery message. Thus, through the scheme provided by the invention, the IP address of the CM and the CPE with the same service under the CMC can be assigned and managed in a unified mode.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of IP address assignment method, coaxial cable intermediate conversionDevice and system.
Background technology
PON (PassiveOpticalNetwork: passive optical-fiber network)+DoCSIS (DataOverCableServiceInterfaceSpecification: wire transmission data service interface specification) EoC(EthernetOverCoax: ether data are transmitted by coaxial cable) secondary groups network technology specially forPresent Domestic broadcasting and TV bidirectional network reconstruction and external MSOCMTS (CableModemTerminationSystem:Wire line MODEM CMTS) network upgrade transformation demand, propose by HFC (HybridFiber-Coaxial: hybrid fiber coax) network drills to FTTx (Fiber-to-the-x: optical fiber access)The total solution of entering. This solution, based on PON network and DoCSIS network integration, both can be protectedExisting CMTS network investment can meet again the trend of network development that light entering and copper back, optical fiber move down simultaneously. CMC---coaxial media converter is a DoCSISEoC local side apparatus, the broadband access of DoCSIS coaxial cableHead end plays the effect of forming a connecting link in whole network, is the destination node of PON procotol, simultaneouslyAgain the starting point of DoCSIS procotol, first line of a couplet OLT (OpticalLineTerminal: optical line terminal)PON network, second line of a couplet CM (CableModem: coax modem) DoCSIS network. This product is adoptedUse DoCSIS3.0 technical standard, serve the operator that the whole world has hfc plant, connect for it provides broadbandEnter service, assist it to complete from single TV services supplier and turn to the role of integrated service operatorBecome, for vast covering user provides abundant, experiences better value-added service.
DHCP (DynamicHostConfigurationProtocol: dynamically in tradition DOCSIS systemHost configuration) Server address allocation policy have multiple, at C-DOCSIS (ChinaDataOverCableServiceInterfaceSpecification: Chinese wire transmission data service interface specification)In system, DHCPRelay can realize on OLT, also can be at CMC (CoaxialMediationConverter: coaxial cable buffer module) upper realization, but if realize by some DHCPServerCM under business of the same race and CPE (CustomerPremiseEquipment: ustomer premises access equipment) are carried outDistribute unitedly and management, need the strategy of an effective distributing IP address.
Summary of the invention
The main technical problem to be solved in the present invention is to provide in a kind of IP address assignment method, coaxial cableBetween converter and system, solve management is distributed unitedly in the IP address of the CM under business of the same race and CPEProblem.
For solving the problems of the technologies described above, the invention provides a kind of IP address assignment method, comprising:
On coaxial cable buffer module, dispose IP port, under this IP port, binding has the coaxial of identical servicesModem and ustomer premises access equipment, and dispose coax modem Dynamic Host Configuration Protocol server and ustomer premises access equipmentDynamic Host Configuration Protocol server;
The DHCP that coaxial cable buffer module receives the coax modem transmission under described IP port sends outExisting message, in the time that described DHCP finds that message is this coax modem initiation, sends out described DHCPExisting message is issued described coax modem Dynamic Host Configuration Protocol server; When described DHCP finds that message is user sideEquipment initiate time, described DHCP is found to message issues described ustomer premises access equipment Dynamic Host Configuration Protocol server.
In an embodiment of the present invention, described DHCP finds that message comprises source Media Access Control address,Described source Media Access Control address is the Media Access Control address that described DHCP finds message promoter; InstituteState coaxial cable buffer module and find that according to described DHCP the source Media Access Control address judgement in message isNo is that described coax modem is initiated;
Or described DHCP finds that message comprises the promoter's field for characterizing promoter; In described coaxial cableBetween converter find to extract promoter's field message from described DHCP, initiate according to this promoter's field judgementWhether person is described coax modem.
In an embodiment of the present invention, described IP port also disposes coax modem Agent IPWith ustomer premises access equipment Agent IP;
Described DHCP discovery message is issued described coax modem by described coaxial cable buffer moduleDynamic Host Configuration Protocol server comprises:
Described coaxial cable buffer module is selected corresponding coax modem Agent IP, coaxial by thisDescribed DHCP discovery message is issued described coax modem DHCP service by modem Agent IPDevice;
Described DHCP discovery message is issued described ustomer premises access equipment DHCP by described coaxial cable buffer moduleServer comprises:
Described coaxial cable buffer module is determined the coax modem institute that sends described DHCP discovery messageIP port, under this IP port, select corresponding ustomer premises access equipment Agent IP, establish by this user sideStandby Agent IP finds that by described DHCP message sends to corresponding ustomer premises access equipment Dynamic Host Configuration Protocol server.
In an embodiment of the present invention, described IP port arrangement has multiple ustomer premises access equipment Agent IPs;
When described coaxial cable buffer module is selected corresponding ustomer premises access equipment Agent IP, select described multipleFirst in ustomer premises access equipment Agent IP or according to mode in turn from described multiple ustomer premises access equipment Agent IPsOne of middle selection.
For solving the problems of the technologies described above, the present invention also provides a kind of IP address assignment method, comprising:
On coaxial cable buffer module, dispose IP port, under this IP port, binding has the coaxial of identical servicesModem and ustomer premises access equipment, and dispose coax modem Dynamic Host Configuration Protocol server and ustomer premises access equipmentDynamic Host Configuration Protocol server;
The DHCP that coaxial cable buffer module receives the coax modem transmission under described IP port sends outExisting message, in the time that described DHCP finds that message is this coax modem initiation, sends out described DHCPExisting message is issued described coax modem Dynamic Host Configuration Protocol server, described coax modem DHCP serviceDevice finds that according to the DHCP receiving message is for this coax modem distributing IP address; When described DHCP sends outExisting message be ustomer premises access equipment initiate time, described DHCP is found to message issues described ustomer premises access equipment DHCPServer, described ustomer premises access equipment Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is described userEnd devices allocation IP address.
In an embodiment of the present invention, described coax modem Dynamic Host Configuration Protocol server basis is receivedDHCP finds that message is that coax modem distributing IP address comprises:
Described coax modem Dynamic Host Configuration Protocol server obtains the medium access control of described coax modemAddress processed is described coax modem distributing IP address according to described Media Access Control address;
Described ustomer premises access equipment Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is that ustomer premises access equipment dividesJoining IP address comprises:
Described ustomer premises access equipment Dynamic Host Configuration Protocol server is according to the coax modem under described ustomer premises access equipmentFor described ustomer premises access equipment distributing IP address.
For solving the problems of the technologies described above, the present invention also provides a kind of coaxial cable buffer module, comprises IPPort, receiver module and processing module:
Under described IP port, binding has coax modem and the ustomer premises access equipment of identical services, and disposesCoax modem Dynamic Host Configuration Protocol server and ustomer premises access equipment Dynamic Host Configuration Protocol server;
The DHCP that described receiver module sends for the coax modem receiving under described IP port findsMessage;
Described processing module, will in the time that described DHCP discovery message is this coax modem initiationDescribed DHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server; When described DHCP finds reportLiterary composition for ustomer premises access equipment initiate time, described DHCP is found to message issues described ustomer premises access equipment DHCP and takeBusiness device.
In an embodiment of the present invention, described DHCP finds that message comprises source Media Access Control address,Described source Media Access Control address is the Media Access Control address that described DHCP finds message promoter; InstituteState processing module and find according to described DHCP the source Media Access Control address in message judges whether it is described sameAxle modem is initiated;
Or described DHCP finds that message comprises the promoter's field for characterizing promoter; Described processing module fromDescribed DHCP finds to extract promoter's field in message, judges according to this promoter's field whether promoter is instituteState coax modem.
In an embodiment of the present invention, described IP port also disposes coax modem Agent IPWith ustomer premises access equipment Agent IP;
Described DHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server by described processing moduleComprise:
Described processing module is selected corresponding coax modem Agent IP, by this coax modemDescribed DHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server by Agent IP;
Described processing module is issued described ustomer premises access equipment Dynamic Host Configuration Protocol server by described DHCP discovery message and is comprised:
Described processing module is determined the IP end at the coax modem place that sends described DHCP discovery messageMouthful, under this IP port, select corresponding ustomer premises access equipment Agent IP, by this ustomer premises access equipment Agent IPDescribed DHCP is found to message sends to corresponding ustomer premises access equipment Dynamic Host Configuration Protocol server.
In an embodiment of the present invention, described IP port arrangement has multiple ustomer premises access equipment Agent IPs;
When described processing module is selected corresponding ustomer premises access equipment Agent IP, select described multiple ustomer premises access equipmentFirst in Agent IP or select one according to mode in turn from described multiple ustomer premises access equipment Agent IPsIndividual.
For solving the problems of the technologies described above, the present invention also provides a kind of IP address assignment system, comprises coaxial electricalCable buffer module, coax modem Dynamic Host Configuration Protocol server, ustomer premises access equipment Dynamic Host Configuration Protocol server; DescribedOn coaxial cable buffer module, dispose IP port, coax modem and the user side of identical services are establishedStandby being bundled under this IP port, this IP port arrangement has coax modem Dynamic Host Configuration Protocol server and user sideEquipment Dynamic Host Configuration Protocol server;
For receiving, coax modem under described IP port sends described coaxial cable buffer moduleDHCP finds message, described DHCP find message be this coax modem initiate time, will described inDHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server; Otherwise described DHCP is found to reportDescribed ustomer premises access equipment Dynamic Host Configuration Protocol server issued in literary composition;
Described coax modem Dynamic Host Configuration Protocol server is for finding that according to the DHCP receiving message is coaxial for thisModem distributing IP address;
Described ustomer premises access equipment Dynamic Host Configuration Protocol server is for finding that according to the DHCP receiving message is described userEnd devices allocation IP address.
In an embodiment of the present invention, described coax modem Dynamic Host Configuration Protocol server basis is receivedDHCP finds that message is that coax modem distributing IP address comprises:
Described coax modem Dynamic Host Configuration Protocol server obtains the medium access control of described coax modemAddress processed is described coax modem distributing IP address according to described Media Access Control address;
Described ustomer premises access equipment Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is that ustomer premises access equipment dividesJoining IP address comprises:
Described ustomer premises access equipment Dynamic Host Configuration Protocol server according to the coax modem under described ustomer premises access equipment isDescribed ustomer premises access equipment distributing IP address.
The invention has the beneficial effects as follows:
IP address assignment method provided by the invention, coaxial cable buffer module and system, the upper configuration of CMCThere is IP port, the CM of identical services and CPE are bundled under this IP port, and divide for this IP port arrangementDo not serve for CMDHCP server and the CPEDHCP of CMIP address assignment and CPEIP address assignmentDevice; CMC receives the DHCP discovery message that the CM under IP port sends, and judges whether this DHCP finds messageBe that this CM initiates, in this way, DHCP found to message issues CMDHCP server, CMDHCP serverFind that according to the DHCP receiving message is for this coax modem distributing IP address; Otherwise DHCP finds reportLiterary composition is CPE initiation, this DHCP discovery message is issued to CPEDHCP server, described CPEDHCP serviceDevice finds that according to the DHCP receiving message is CPE distributing IP address. Visible, by provided by the inventionScheme has realized the CM of the identical services to hanging under CMC and the IP address of CPE is distributed unitedly and managed.
Brief description of the drawings
The IP address assignment system architecture schematic diagram that Fig. 1 provides for the embodiment of the present invention one;
The coaxial cable buffer module structural representation that Fig. 2 provides for the embodiment of the present invention one;
The IP address assignment method flow schematic diagram that Fig. 3 provides for the embodiment of the present invention two;
The IP address assignment method flow schematic diagram that Fig. 4 provides for the embodiment of the present invention three.
Detailed description of the invention
By reference to the accompanying drawings the present invention is described in further detail below by detailed description of the invention.
Embodiment mono-:
Shown in Figure 1, the IP address assignment system that the present embodiment provides comprises coaxial cable intermediate conversionDevice (CMC) and Dynamic Host Configuration Protocol server; Wherein Dynamic Host Configuration Protocol server comprises coax modem (CM) DHCPServer and ustomer premises access equipment (CPE) Dynamic Host Configuration Protocol server; On CMC, dispose IP port (being IPBundle),The CM of identical services and CPE are bundled under this IP port, and this IP port arrangement is respectively used to CMIP groundCMDHCP server and the CPEDHCP server of location distribution and CPEIP address assignment; The present embodiment toolBody can determine whether identical services by IP address network segment. IP address system hangs on CMC under also comprisingCM and under hang over the CPE under each CM, the CPE in the present embodiment can be specifically STB (Set Top Box),Host (main frame), IAD (integrated access equipment) etc.
The DHCP that CMC sends for the CM receiving under the IP port of its configuration finds that message (can be specificallyDHCPDISCOVER message or DHCPREQUEST message), judge that this DHCP finds whether message is to sendThis DHCP finds what the CM of message initiated, in this way, DHCP is found to message issues corresponding CMDHCP clothesBusiness device; Otherwise show that this DHCP finds that message is that CPE under this CM initiates, and finds message by this DHCPIssue corresponding CPEDHCP server;
CMDHCP server is for finding that according to the DHCP receiving message is the CM that initiates DHCP discovery messageDistributing IP address;
CPEDHCP server is for finding that according to the DHCP receiving message is to initiate DHCP to find messageCPE distributing IP address.
In the present embodiment, adopting different Dynamic Host Configuration Protocol server is CM and CPE distributing IP address, can divide and undertakeCarry, be more conducive to the utilization of resource. Certainly in application scenes, also can adopt identical DHCP be CM andCPE distributing IP address.
In the present embodiment, CMC judge DHCP find message be whether CM initiate can adopt following two kinds of sidesAt least one in formula:
Mode one: DHCP finds that message comprises source MAC (being Media Access Control address), this source MACAddress is the MAC Address that DHCP finds message promoter;
CMC obtains the MAC Address of the CM that sends DHCP discovery message, and finds to carry message from this DHCPGet source MAC, relatively whether the MAC Address of CM is identical with the source MAC extracting, in this way, andShow that DHCP finds that message is that CM initiates; Otherwise judgement DHCP discovery message is that the CPE under CM sends outRise.
In the present embodiment, CMC after judgement completes, or judgement before, also can be by the MAC of the CM obtainingAddress is inserted DHCP and is found message, can carry out autonomous judgement for CMDHCP server. Concrete,Can insert the Option82 field that DHCP finds message, DHCPRelayAgentInformationOption(82): the MAC Address that inserts CM in sub-option2:RemoteID; CMDHCP server canFurther whether equal this DHCP according to the MAC Address in RemoteID and find that message Central Plains MAC judgesThis application comes from CM and still comes from the CPE (as stb/PC/eMTA etc.) below CM.
Mode two: or DHCP finds that message comprises the promoter's field for characterizing promoter; CMC obtains and connectsThe DHCP receiving finds promoter's field of message, judges according to this promoter's field whether promoter is CM.The concrete DHCP of promoter's field in the present embodiment finds the Option60 field of message, concrete,Arranging of DHCPOption60 field is as follows:
First 6 while being docsis of OP60 character string, can determine that DHCP finds that message promoter isCable-modem (being CM);
First 4 of OP60 character string is pktc, can determine that DHCP finds that message promoter is eMTA;
First 3 of OP60 character string is STB, can determine that DHCP finds that message promoter is stb;
First 4 of OP60 character string is MSFT, can determine that DHCP finds that message promoter is PC.
What DHCP in the present embodiment found message also comprises Option43 field, wherein, and Option43 wordSection comprises: VSI (vendor specific information), and for exchanging the spy of manufacturer between Dynamic Host Configuration Protocol server and clientDetermine information, when Dynamic Host Configuration Protocol server is received the DHCP request message (Option55 that asks Option43 informationIn with 43 parameters) after, will carry Option43 replying in message, be that dhcp client distributes manufacturerThe information of specifying. The DHCP message of initiating for CPE (eMTA/PC/stb etc.) in the present embodiment can be onlyCarry Option60, do not carry Option43; As long as meet CableLabs standard, requirement for CMMust carry Option60 and Option43 simultaneously.
CMC in the present embodiment also supports DHCPRelay (being DHCP proxy) function, first line of a couplet OLT, OLTBe two layers of transmission equipment. Before CMC receives the DHCP discovery message of the CM transmission under the IP port configuring,Also be included as this IP port arrangement CM Agent IP and CPE Agent IP; CMC finds that by DHCP message issuesWhen CMDHCP server, specifically can select corresponding CM Agent IP, by this CM Agent IP by DHCPDiscovery message is issued CMDHCP server. The DHCP of institute discovery message is issued CPEDHCP server bag by CMCDraw together: CMC determines the IP port at the CM place that sends DHCP discovery message, and it is right under this IP port, to selectThe CPE Agent IP of answering, finds that by DHCP message sends to corresponding CPEDHCP by this CPE Agent IPServer.
When CMC in the present embodiment is IP port arrangement CPE Agent IP and CM Agent IP, can basisNeed to configure one or more; In the time that configuration is multiple, can select first CPE Agent IP by defaultWith CM Agent IP, or select according to mode in turn in the time selecting, certainly also can adopt other optimizationsAlgorithm is selected. For example,, when the CPE Agent IP of configuration comprises that when multiple, CMC selects corresponding CPEWhen Agent IP, select in multiple CPE Agent IPs first or according to mode in turn from multiple CPE generationIn reason IP, select one.
CMDHCP server receives that DHCP finds after message, finds that from DHCP message extracts this DHCP of transmissionFind the MAC Address of CM of message, according to this MAC Address from address pool for CM matches corresponding IPAddress. CPEDHCP server receives DHCP and finds after message, for the process of CPE distributing IP address is:
CPEDHCP server is CPE distributing IP address according to the CM under this CPE. Concrete, CPEWhile initiating DHCP discovery message, CMC judges according to the IP of CM that this CPE connects which oneself should selectCPE Agent IP under individual IP port is as the relaying IP of oneself, and CPEDHCP server also can be according to thisCPE Agent IP carries out same subnet address and distributes.
Shown in Figure 2, the coaxial cable buffer module (CMC) in the present embodiment comprise IP port,Receiver module and processing module: under this IP port, binding has coax modem and the user side of identical servicesEquipment, and dispose coax modem Dynamic Host Configuration Protocol server and ustomer premises access equipment Dynamic Host Configuration Protocol server;
The DHCP that receiver module sends for the CM receiving under this IP port finds message;
Processing module for the DHCP receiving when receiver module find message be this CM initiation time, by DHCPDiscovery message is issued coax modem Dynamic Host Configuration Protocol server; In the time that DHCP finds that message is CPE initiation,DHCP is found to message issues ustomer premises access equipment Dynamic Host Configuration Protocol server.
DHCP in the present embodiment finds that message comprises source MAC, and source MAC is that DHCP finds reportLiterary composition promoter's MAC Address; Processing module judges whether according to the source MAC in DHCP discovery messageCM initiates; Specifically comprise: processing module is obtained the MAC Address of the CM that sends DHCP discovery message, andFind extraction source MAC Address message from this DHCP, relatively the MAC Address of CM and the source MAC extractingWhether address is identical, in this way, shows that DHCP finds that message is that CM initiates; Otherwise, judge that DHCP sends outExisting message is that the CPE under CM initiates.
Or DHCP finds that message comprises the promoter's field for characterizing promoter; Processing module is sent out from DHCPIn existing message, extract promoter's field, judge according to this promoter's field whether promoter is that CM initiates.
IP port in the present embodiment also disposes coax modem Agent IP and ustomer premises access equipment agencyIP；
Processing module finds that by DHCP message issues coax modem Dynamic Host Configuration Protocol server and comprise:
Processing module is selected corresponding coax modem Agent IP, acts on behalf of by this coax modemIP finds that by DHCP message issues coax modem Dynamic Host Configuration Protocol server;
Processing module finds that by DHCP message issues ustomer premises access equipment Dynamic Host Configuration Protocol server and comprise:
Processing module is determined the IP port at the coax modem place that sends DHCP discovery message, at thisUnder IP port, select corresponding ustomer premises access equipment Agent IP, by this ustomer premises access equipment Agent IP, DHCP is sent outExisting message sends to corresponding ustomer premises access equipment Dynamic Host Configuration Protocol server.
IP port arrangement in the present embodiment has multiple ustomer premises access equipment Agent IPs;
When processing module is selected corresponding ustomer premises access equipment Agent IP, select multiple ustomer premises access equipment Agent IPsIn first or from described multiple ustomer premises access equipment Agent IPs, select one according to mode in turn.
Embodiment bis-:
The IP address assignment method that the present embodiment provides is shown in Figure 3, comprising:
Step 201: configuration of IP port on CMC, is bundled in this IP port by the CM of identical services and CPEUnder;
Step 202: for this IP port arrangement is respectively used to CMIP address assignment and CPEIP address assignmentCMDHCP server and CPEDHCP server;
Step 203:CMC receives the DHCP discovery message that the CM under IP port sends;
Step 204:CMC judges that DHCP finds that whether message is that this CM initiates, and in this way, goes to step 205;Otherwise, go to step 207;
Step 205:CMC finds that by DHCP message issues CMDHCP server;
Step 206:CMDHCP server finds that according to the DHCP receiving message is for this CM distributing IP address.
Step 207:DHCP finds that message is that CPE initiates, and DHCP is found to message issues CPEDHCP clothesBusiness device;
Step 208:CPEDHCP server finds that according to the DHCP receiving message is CPE distributing IP groundLocation.
In the present embodiment, adopting different Dynamic Host Configuration Protocol server is CM and CPE distributing IP address, can divide and undertakeCarry, be more conducive to the utilization of resource. Certainly in application scenes, also can adopt identical DHCP be CM andCPE distributing IP address.
In the present embodiment, CMC judge DHCP find message be whether CM initiate can adopt following two kinds of sidesAt least one in formula:
Mode one: DHCP finds that message comprises source MAC (being Media Access Control address), this source MACAddress is the MAC Address that DHCP finds message promoter;
CMC obtains the MAC Address of the CM that sends DHCP discovery message, and finds to carry message from this DHCPGet source MAC, relatively whether the MAC Address of CM is identical with the source MAC extracting, in this way, andShow that DHCP finds that message is that CM initiates; Otherwise judgement DHCP discovery message is that the CPE under CM sends outRise.
In the present embodiment, CMC after judgement completes, or judgement before, also can be by the MAC of the CM obtainingAddress is inserted DHCP and is found message, can carry out autonomous judgement for CMDHCP server. Concrete,Can insert the Option82 field that DHCP finds message, DHCPRelayAgentInformationOption(82): the MAC Address that inserts CM in sub-option2:RemoteID; CMDHCP server canFurther whether equal this DHCP according to the MAC Address in RemoteID and find that message Central Plains MAC judgesThis application comes from CM and still comes from the CPE (as stb/PC/eMTA etc.) below CM.
Mode two: or DHCP finds that message comprises the promoter's field for characterizing promoter; CMC obtains and connectsThe DHCP receiving finds promoter's field of message, judges according to this promoter's field whether promoter is CM.The concrete DHCP of promoter's field in the present embodiment finds the Option60 field of message, concrete,Arranging of DHCPOption60 field is as follows:
First 6 while being docsis of OP60 character string, can determine that DHCP finds that message promoter isCable-modem (being CM);
First 4 of OP60 character string is pktc, can determine that DHCP finds that message promoter is eMTA;
First 3 of OP60 character string is STB, can determine that DHCP finds that message promoter is stb;
First 4 of OP60 character string is MSFT, can determine that DHCP finds that message promoter is PC.
What DHCP in the present embodiment found message also comprises Option43 field, wherein, and Option43 wordSection comprises: VSI (vendor specific information), and for exchanging the spy of manufacturer between Dynamic Host Configuration Protocol server and clientDetermine information, when Dynamic Host Configuration Protocol server is received the DHCP request message (Option55 that asks Option43 informationIn with 43 parameters) after, will carry Option43 replying in message, be that dhcp client distributes manufacturerThe information of specifying. The DHCP message of initiating for CPE (eMTA/PC/stb etc.) in the present embodiment can be onlyCarry Option60, do not carry Option43; As long as meet CableLabs standard, requirement for CMMust carry Option60 and Option43 simultaneously.
CMC in the present embodiment also supports DHCPRelay (being DHCP proxy) function, first line of a couplet OLT, OLTBe two layers of transmission equipment. Before CMC receives the DHCP discovery message of the CM transmission under the IP port configuring,Also be included as this IP port arrangement CM Agent IP and CPE Agent IP; CMC finds that by DHCP message issuesWhen CMDHCP server, specifically can select corresponding CM Agent IP, by this CM Agent IP by DHCPDiscovery message is issued CMDHCP server. The DHCP of institute discovery message is issued CPEDHCP server bag by CMCDraw together: CMC determines the IP port at the CM place that sends DHCP discovery message, and it is right under this IP port, to selectThe CPE Agent IP of answering, finds that by DHCP message sends to corresponding CPEDHCP by this CPE Agent IPServer.
When CMC in the present embodiment is IP port arrangement CPE Agent IP and CM Agent IP, can basisNeed to configure one or more; In the time that configuration is multiple, can select first CPE Agent IP by defaultWith CM Agent IP, or select according to mode in turn in the time selecting, certainly also can adopt other optimizationsAlgorithm is selected. For example,, when the CPE Agent IP of configuration comprises that when multiple, CMC selects corresponding CPEWhen Agent IP, select in multiple CPE Agent IPs first or according to mode in turn from multiple CPE generationIn reason IP, select one.
CMDHCP server receives that DHCP finds after message, finds that from DHCP message extracts this DHCP of transmissionFind the MAC Address of CM of message, according to this MAC Address from address pool for CM matches corresponding IPAddress. CPEDHCP server receives DHCP and finds after message, for the process of CPE distributing IP address is:
CPEDHCP server is CPE distributing IP address according to the CM under this CPE. Concrete, CPEWhile initiating DHCP discovery message, CMC judges according to the IP of CM that this CPE connects which oneself should selectCPE Agent IP under individual IP port is as the relaying IP of oneself, and CPEDHCP server also can be according to thisCPE Agent IP carries out same subnet address and distributes.
Embodiment tri-:
For a better understanding of the present invention, in the present embodiment taking a kind of concrete application scenarios as example is to the present inventionDo further exemplary explanation. While realizing DHCPRelay on CMC, adopt the OLT first line of a couplet, OLT only needsTwo layers of transparent transmission of supported vlans. Shown in Figure 4, for the process of CM and CPE distributing IP address comprises:
Step 301: configuration of IP Bundle on CMC (being IP port), and by the CM of identical services andCPE, as similar IPBundle subnet, is bundled in an IPBundle;
Step 302: be this IPBundle configuration CMDHCP server, CPEDHCP server and phaseThe Agent IP of answering; In the present embodiment, be respectively what CPE of CM and distribute configuration CMDHCP server, CPEDHCP separatelyServer, its concrete configuration is as follows:
The upper IPBundle configuration of CMC is as follows:
Cmc (config) #interfacebundle1//configuration bundle1
Cmc (config-if) #ipaddress191.168.3.3255.255.255.0//CM reaches the standard graderelayip
cmc(config-if)#ipaddress191.168.4.3255.255.255.0secondary//CPEThe relayip reaching the standard grade
cmc(config-if)#ipaddress191.168.5.3255.255.255.0secondary//CPEThe relayip reaching the standard grade
cmc(config-if)#cablehelper-address172.16.1.144//CMDHCPserverIp, for to CM distribute ip
cmc(config-if)#cablehelper-address172.16.2.144cpe//CPEDHCPIp, for to CPE distribute ip
Cmc (config-if) #cablesource-verifydhcp//support DHCP mode is obtained CM/CPEIp
Cmc (config-if) #cabledhcp-giaddrpolicy1//choose from secondary typeThe 1st relayip that ipaddress reaches the standard grade as CPE;
Step 303:CM or CPE initiate DHCP find message (send DHCPdiscover message orPerson DHCPrequest message);
Step 304:CMC receives the DHCP discovery message that the CM under it sends, and extracts this DHCP and finds reportSource MAC in literary composition, and obtain the MAC Address of this CM;
Step 305:CMC judges that whether the source MAC extracting is consistent with the MAC Address of the CM obtaining,In this way, go to step 306: otherwise, go to step 308;
Step 306:CMC passes through acquiescence CMC Agent IP default gateway address (such as 191.168.3.3),(CMDHCP server has only been joined one here, institute to find message to CMDHCP server distribution DHCPOnly to forward toward 172.16.1.144);
Step 307:CMDHCP server finds that according to this DHCP the source MAC in message arrives address poolIn mate, distribute IP address under this CM, follow-up agreement and data retransmission according to matching result to CMCAll walk this affiliated IPRelayAgent (as gateway).
Step 308:CMC determines and selects according to the IP of the CM under the CPE of this DHCP discovery message of initiationCPE Agent IP under which IPBundle; Suppose that above-mentioned example has distributed the 191.168.3.0 network segment to CMIP, CMC according to this IP judgement should select the secondary default gateway under bundle1 to forward, but owing to joining2 secondary RelayIP, have a select command here, select this to walk which secondary Relay for CMCIP. CMC passes through the publicly-owned secondary IPRelayAgent gateway address of acquiescence (such as 191.168.4.3), toCPEDHCP server (172.16.2.144) distribution DHCP finds message;
Step 309: according to CM under CPE or IPBundle situation, distributed by CPEDHCP serverCorresponding IP address, follow-up agreement and data retransmission are all walked the IPRelayAgent (as gateway) under this.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not recognizeDetermine specific embodiment of the invention and be confined to these explanations. For the ordinary skill of the technical field of the inventionPersonnel, without departing from the inventive concept of the premise, can also make some simple deduction or replace,All should be considered as belonging to protection scope of the present invention.
Claims (12)
1. an IP address assignment method, is characterized in that, comprising:
On coaxial cable buffer module, dispose IP port, under this IP port, binding has the coaxial of identical servicesModem and ustomer premises access equipment, and dispose coax modem Dynamic Host Configuration Protocol server and ustomer premises access equipmentDynamic Host Configuration Protocol server;
The DHCP that coaxial cable buffer module receives the coax modem transmission under described IP port sends outExisting message, in the time that described DHCP finds that message is this coax modem initiation, sends out described DHCPExisting message is issued described coax modem Dynamic Host Configuration Protocol server; When described DHCP finds that message is user sideEquipment initiate time, described DHCP is found to message issues described ustomer premises access equipment Dynamic Host Configuration Protocol server.
2. IP address assignment method as claimed in claim 1, is characterized in that, described DHCP sends outExisting message comprises source Media Access Control address, and described source Media Access Control address is that described DHCP finds reportLiterary composition promoter's Media Access Control address; Described coaxial cable buffer module is found report according to described DHCPSource Media Access Control address in literary composition judges whether it is that described coax modem is initiated;
Or described DHCP finds that message comprises the promoter's field for characterizing promoter; In described coaxial cableBetween converter find to extract promoter's field message from described DHCP, initiate according to this promoter's field judgementWhether person is described coax modem.
3. IP address assignment method as claimed in claim 1 or 2, is characterized in that, described IPPort also disposes coax modem Agent IP and ustomer premises access equipment Agent IP;
Described DHCP discovery message is issued described coax modem by described coaxial cable buffer moduleDynamic Host Configuration Protocol server comprises:
Described coaxial cable buffer module is selected corresponding coax modem Agent IP, coaxial by thisDescribed DHCP discovery message is issued described coax modem DHCP service by modem Agent IPDevice;
Described DHCP discovery message is issued described ustomer premises access equipment DHCP by described coaxial cable buffer moduleServer comprises:
Described coaxial cable buffer module is determined the coax modem institute that sends described DHCP discovery messageIP port, under this IP port, select corresponding ustomer premises access equipment Agent IP, establish by this user sideStandby Agent IP finds that by described DHCP message sends to corresponding ustomer premises access equipment Dynamic Host Configuration Protocol server.
4. IP address assignment method as claimed in claim 3, is characterized in that, described IP portDispose multiple ustomer premises access equipment Agent IPs;
When described coaxial cable buffer module is selected corresponding ustomer premises access equipment Agent IP, select described multipleFirst in ustomer premises access equipment Agent IP or according to mode in turn from described multiple ustomer premises access equipment Agent IPsOne of middle selection.
5. an IP address assignment method, is characterized in that, comprising:
On coaxial cable buffer module, dispose IP port, under this IP port, binding has the coaxial of identical servicesModem and ustomer premises access equipment, and dispose coax modem Dynamic Host Configuration Protocol server and ustomer premises access equipmentDynamic Host Configuration Protocol server;
The DHCP that coaxial cable buffer module receives the coax modem transmission under described IP port sends outExisting message, in the time that described DHCP finds that message is this coax modem initiation, sends out described DHCPExisting message is issued described coax modem Dynamic Host Configuration Protocol server, described coax modem DHCP serviceDevice finds that according to the DHCP receiving message is for this coax modem distributing IP address; When described DHCP sends outExisting message be ustomer premises access equipment initiate time, described DHCP is found to message issues described ustomer premises access equipment DHCPServer, described ustomer premises access equipment Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is described userEnd devices allocation IP address.
6. IP address assignment method as claimed in claim 5, is characterized in that, described coaxial modulationDemodulator Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is coax modem distributing IP address packetDraw together:
Described coax modem Dynamic Host Configuration Protocol server obtains the medium access control of described coax modemAddress processed is described coax modem distributing IP address according to described Media Access Control address;
Described ustomer premises access equipment Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is that ustomer premises access equipment dividesJoining IP address comprises:
Described ustomer premises access equipment Dynamic Host Configuration Protocol server is according to the coax modem under described ustomer premises access equipmentFor described ustomer premises access equipment distributing IP address.
7. a coaxial cable buffer module, is characterized in that, comprise IP port, receiver module andProcessing module:
Under described IP port, binding has coax modem and the ustomer premises access equipment of identical services, and disposesCoax modem Dynamic Host Configuration Protocol server and ustomer premises access equipment Dynamic Host Configuration Protocol server;
The DHCP that described receiver module sends for the coax modem receiving under described IP port findsMessage;
Described processing module, will in the time that described DHCP discovery message is this coax modem initiationDescribed DHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server; When described DHCP finds reportLiterary composition for ustomer premises access equipment initiate time, described DHCP is found to message issues described ustomer premises access equipment DHCP and takeBusiness device.
8. coaxial cable buffer module as claimed in claim 7, is characterized in that, described DHCPFind that message comprises source Media Access Control address, described source Media Access Control address is that described DHCP findsMessage promoter's Media Access Control address; Described processing module is found the source in message according to described DHCPMedia Access Control address judges whether it is that described coax modem is initiated;
Or described DHCP finds that message comprises the promoter's field for characterizing promoter; Described processing module fromDescribed DHCP finds to extract promoter's field in message, judges according to this promoter's field whether promoter is instituteState coax modem.
9. coaxial cable buffer module as claimed in claim 7 or 8, is characterized in that, described inIP port also disposes coax modem Agent IP and ustomer premises access equipment Agent IP;
Described DHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server by described processing moduleComprise:
Described processing module is selected corresponding coax modem Agent IP, by this coax modemDescribed DHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server by Agent IP;
Described processing module is issued described ustomer premises access equipment Dynamic Host Configuration Protocol server by described DHCP discovery message and is comprised:
Described processing module is determined the IP end at the coax modem place that sends described DHCP discovery messageMouthful, under this IP port, select corresponding ustomer premises access equipment Agent IP, by this ustomer premises access equipment Agent IPDescribed DHCP is found to message sends to corresponding ustomer premises access equipment Dynamic Host Configuration Protocol server.
10. coaxial cable buffer module as claimed in claim 9, is characterized in that, described IP endMouth disposes multiple ustomer premises access equipment Agent IPs;
When described processing module is selected corresponding ustomer premises access equipment Agent IP, select described multiple ustomer premises access equipmentFirst in Agent IP or select one according to mode in turn from described multiple ustomer premises access equipment Agent IPsIndividual.
11. 1 kinds of IP address assignment systems, is characterized in that, comprise coaxial cable buffer module, sameAxle modem Dynamic Host Configuration Protocol server, ustomer premises access equipment Dynamic Host Configuration Protocol server; Described coaxial cable intermediate conversionOn device, dispose IP port, the coax modem of identical services and ustomer premises access equipment are bundled in this IP portUnder, this IP port arrangement has coax modem Dynamic Host Configuration Protocol server and ustomer premises access equipment Dynamic Host Configuration Protocol server;
For receiving, coax modem under described IP port sends described coaxial cable buffer moduleDHCP finds message, described DHCP find message be this coax modem initiate time, will described inDHCP discovery message is issued described coax modem Dynamic Host Configuration Protocol server; Otherwise described DHCP is found to reportDescribed ustomer premises access equipment Dynamic Host Configuration Protocol server issued in literary composition;
Described coax modem Dynamic Host Configuration Protocol server is for finding that according to the DHCP receiving message is coaxial for thisModem distributing IP address;
Described ustomer premises access equipment Dynamic Host Configuration Protocol server is for finding that according to the DHCP receiving message is described userEnd devices allocation IP address.
12. IP address assignment systems as claimed in claim 11, is characterized in that, described coaxial tuneModulator-demodulator Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is coax modem distributing IP addressComprise:
Described coax modem Dynamic Host Configuration Protocol server obtains the medium access control of described coax modemAddress processed is described coax modem distributing IP address according to described Media Access Control address;
Described ustomer premises access equipment Dynamic Host Configuration Protocol server finds that according to the DHCP receiving message is that ustomer premises access equipment dividesJoining IP address comprises:
Described ustomer premises access equipment Dynamic Host Configuration Protocol server according to the coax modem under described ustomer premises access equipment isDescribed ustomer premises access equipment distributing IP address.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689892.0A CN105610994B (en) | 2014-11-25 | 2014-11-25 | IP address allocation method, coaxial cable intermediate converter and system |
| PCT/CN2015/072444 WO2016082335A1 (en) | 2014-11-25 | 2015-02-06 | Ip address allocation method, coaxial cable intermediate converter and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689892.0A CN105610994B (en) | 2014-11-25 | 2014-11-25 | IP address allocation method, coaxial cable intermediate converter and system |
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| CN105610994A true CN105610994A (en) | 2016-05-25 |
| CN105610994B CN105610994B (en) | 2020-06-26 |
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| CN (1) | CN105610994B (en) |
| WO (1) | WO2016082335A1 (en) |
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| CN112648197B (en) * | 2020-11-30 | 2022-06-14 | 三联泵业股份有限公司 | Water pump capable of changing motion state |
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Also Published As
| Publication number | Publication date |
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| CN105610994B (en) | 2020-06-26 |
| WO2016082335A1 (en) | 2016-06-02 |
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