CN101257496B - Method and system for acquiring allocating information - Google Patents
Method and system for acquiring allocating information Download PDFInfo
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- CN101257496B CN101257496B CN2008100863532A CN200810086353A CN101257496B CN 101257496 B CN101257496 B CN 101257496B CN 2008100863532 A CN2008100863532 A CN 2008100863532A CN 200810086353 A CN200810086353 A CN 200810086353A CN 101257496 B CN101257496 B CN 101257496B
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Abstract
The invention relates to the communication field, and discloses a method and a system to obtain the configuration information. In the invention, when the superior device and the junior device connected with the serial link carry through the interconnection protocol to control the negotiate of the protocol IPCP layer, the superior device carries the configuration information in at least one scheduled negotiating parameter of IPCP information to transfer to the junior device. Using the technical proposal, when the superior device negotiates at the IPCP layer, the negotiating parameter that is not used at ordinary time is used to carry the configuration information, which realizes the automatic layout of the junior device. The project has wide applicability, and can use the standard protocol only to be corrected on the protocol configuration not to correct the protocol itself. In service use, the junior device with the configuration can be butted with the superior device with the configuration information, also can be butted with the common PPP opposite terminal device.
Description
Technical field
The present invention relates to the communications field, particularly obtain the method and system of configuration information.
Background technology
3G is the abbreviation of English 3rd Generation, refers to the 3G (Third Generation) Moblie technology.The first generation is simulated standard type mobile communication technology and second generation global system for mobile communications (Global System for mobileCommunication relatively, abbreviation " GSM "), code division multiple access (Code Division Multiple Access, be called for short " CDMA ") etc. the digital mobile communication technology, 3G is meant the third generation mobile communication system that multimedia communications such as radio communication and Internet are combined generally speaking.It can handle multiple media formats such as image, music, video flowing, and multiple information services such as comprising web page browsing, videoconference, ecommerce is provided.
In the 3G system, network side comprises base station controller and base station.Each base station is used to accept the subscriber equipment signal in the administrative area, gathers to base station controller by transmission channel after treatment.Base station controller focuses on the information that base station transmits is come, and the information that will handle sends to subscriber equipment by the base station.
The cost of base station controller when saving networking, a base station controller need provide large tracts of land to cover usually, and it connects and controls a plurality of base stations, and the base station that is attached thereto can be far from base station controller, its distance can reach kilometers up to a hundred, and base station distance to each other is also far away.
In view of this, in order efficiently and easily remote access and maintenance to be carried out in the base station, need set up a maintenance channel.The agreement of this maintenance channel is transmission control protocol/internetworking protocol (TransmissionControl Protocol/Internet Protocol is called for short " TCP/IP ").
The maintenance channel of IP Radio Access Network (Radio Access Network is called for short " RAN ") as shown in Figure 1.In order to guarantee the functions of the equipments logical separation, the base station provides access IP, that is, and and the concrete professional IP that uses; And safeguard IP.Setting up maintenance channel need obtain when main and safeguard IP address and relevant configuration.
Next reverse address resolution protocol (Reverse Address ResolutionProtocol is once briefly described, abbreviation " RARP "), Bootstrap agreement (Bootstrap Protocol, abbreviation " BOOTP "), DHCP (Dynamic Host Configuration Protocol, be called for short " DHCP "), and peer-peer protocol (Point-to-Point Protocol is called for short " PPP ").
The RARP agreement is a RARP, obtains the IP address by media interviews control (Medium AccessControl is called for short " MAC ") address, is a kind of early stage IP address mode that obtains automatically, and the later stage is substituted by BOOTP or DHCP.
The BOOTP agreement is a kind of older system's BOOT strapping Protocol, obtains IP address and startup file name from server when being mainly used in the non-disk workstation startup.
The DHCP agreement then is a DHCP, is the development of BOOTP agreement, from two aspects the BOOTP agreement is expanded: the one, and can make computer obtain its needed all configuration information with a message, promptly transmit the agreement of configuration information; The 2nd, allow computer to obtain IP address, the i.e. mechanism of dynamic assignment IP address fast, dynamically.
Ppp protocol is that the IP link layer protocol, particularly transmission bearer used always are the situation of E1.The negotiations process of ppp protocol is divided into LCP (Link Control Protocol is called for short " LCP ") negotiation and network control port (Network Control Port is called for short " NCP ") is consulted.Wherein, for the IP agreement, be the ipcp negotiation of NCP, this process negotiations process can distribute the IP address of PPP.
Introduce prior art scheme related to the present invention below:
Prior art scheme one:
The base station utilizes the NCP agreement of ppp link, consults and obtain network layer address.
The advantage of this scheme is that agreement is general, and general device is all supported.
Shortcoming is that the address that can utilize NCP to obtain is limited, can only obtain local terminal and peer IP address, and for other device parameter, such as maintenance channel IP address, device interior safeguards that the network segment and channel parameters etc. all can't obtain, and need static configuration.If carry out static configuration, then need manually to safeguard at remote equipment, increase workload greatly.In addition, the address that utilizes NCP to obtain has only one, the access address of equipment and safeguard that the address can not be made as different value.
Prior art scheme two:
The base station utilizes common DHCP agreement to obtain maintenance channel information.
The advantage of this scheme is that the DHCP agreement is generally supported, can obtain the network segment, gateway address, DNS information such as (DOMAIN NAME SYSTEM are called for short " DNS "), and configuration is simple.
Shortcoming is that the DHCP agreement only can be supported the automatic configuration on the ethernet medium at present, can not support that the configuration on the serial links such as PPP is obtained, and can not use on links such as E1/T1.And in 3G RAN network, E1/T1 is very common delivering path, and this has caused the use of DHCP in the RAN network to be subjected to bigger restriction.
The main cause that the DHCP agreement can not be moved on PPP is, DHCP needs broadcast capability, and PPP does not support broadcast capability, the hardware address that needs the equipment of filling in the part DHCP message, as media interviews control (Medium Access Control, be called for short " MAC ") address, and do not have hardware address among the PPP.
Summary of the invention
The technical problem underlying that each execution mode of the present invention will solve provides a kind of method and system that obtains configuration information.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of method of obtaining configuration information, comprise that the upper and lower level equipment that connects with serial link carries out interconnection protocol control protocol IPCP layer when consulting, this higher level equipment is carried at configuration information at least one predetermined consultation parameter of IPCP message and is transferred to this subordinate equipment.
Embodiments of the present invention also provide a kind of system that obtains configuration information, comprise the upper and lower level equipment that connects with serial link;
Comprise the module of consulting to set up ppp link by the IPCP layer in the described upper and lower level equipment;
Described higher level equipment also comprises configuration information is carried at the module that is transferred to described subordinate equipment at least one predetermined consultation parameter of IPCP message.
By relatively can finding, higher level equipment can carry configuration information by obsolete consultation parameter at ordinary times when the IPCP layer is consulted, realize the automatic configuration of subordinate equipment.This scheme applicability is wide, can utilize standard agreement, only need make amendment on protocol configuration, does not need to revise agreement itself.In actual use, adopt the subordinate equipment of this configuration to dock, also can dock with common PPP opposite equip. with the higher level equipment that carries configuration information.
Description of drawings
Fig. 1 is the maintenance channel schematic diagram of IP RAN;
Fig. 2 is the system configuration schematic diagram that obtains configuration information according to embodiment of the present invention;
Fig. 3 is the method flow schematic diagram that obtains configuration information according to first embodiment of the invention;
Fig. 4 is the schematic flow sheet that carries out dhcp process on ppp link according to first embodiment of the invention;
Fig. 5 is the method flow schematic diagram that obtains configuration information according to third embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Need to prove, alleged ppp link is a kind of generalized concept among the present invention, comprise the various links that use agreement in the ppp protocol family, as Multi-link Point to Point Protocol (Multi Link Point to PointProtocol, be called for short " MLPPP ") link, based on the peer-peer protocol of Ethernet (Point to PointProtocol over Ethernet is called for short " PPPoE ") link etc.
First execution mode of the present invention relates to the technical scheme that obtains device configuration information on the technical scheme of transmitting DHCP message on the ppp link and ppp link by the DHCP message.
As shown in Figure 2, the system that obtains configuration information comprises the upper and lower level equipment that connects with ppp link.Be included in the subordinate equipment on the ppp link by the module of DHCP message to higher level's device request configuration information; Be included in the module that sends configuration information on the ppp link by the DHCP message to subordinate equipment in the higher level equipment.The ppp link of upper and lower level equipment can be based upon on any serial transmission line, and serial transmission line includes but not limited to RS232 serial ports, E1, T1, J1, E3, T3 etc.
The step that subordinate equipment obtains configuration from higher level equipment as shown in Figure 3.
In step 310, between upper and lower level equipment, set up ppp link.Specifically, default configuration ppp link on subordinate equipment in advance, this subordinate equipment can be automatically carries out the PPP connection requests having on the serial transmission lines such as E1 like this.
Higher level equipment responds the PPP connection requests on serial transmission lines such as E1, by the NCP agreement of standard P PP, give information such as subordinate equipment distribution interface IP address.
After subordinate equipment and higher level equipment are successfully set up ppp link, enter step 320, subordinate equipment on ppp link by the DHCP message to higher level's device request configuration information.
After this enter step 330, higher level equipment sends configuration information by the DHCP message to subordinate equipment on ppp link.
Above-mentioned steps 320 and step 330 all relate to transmission of dhcp message on PPP.Because existing DHCP agreement generally can only can not be carried out DHCP in the ethernet link support on ppp link, carry out DHCP on ppp link, need carry out certain expansion to DHCP, the DHCP frame structure is as shown in table 1.
Table 1
The main cause that DHCP can not move on ppp link has 2 points, the one, DHCP needs broadcasting, and there is not broadcast capability on the ppp link, the 2nd, need hardware address among the DHCP, hardware address is exactly media interviews control (Medium Access Control in ethernet link, be called for short " MAC ") address, and do not have MAC Address in the ppp link.
The present invention solves the support issue of PPP to DHCP by the following method:
When the end points of ppp link is received the DHCP message that needs broadcasting, this DHCP message is sent to the opposite end by this ppp link.
When needing in the DHCP message of ppp link transmission, to need to fill in hardware address (chaddr), but use the sign of the equipment of ppp link to insert this DHCP message unique identification as hardware address.
When Dynamic Host Configuration Protocol server is devices allocation IP address, but with the sign of this equipment of unique identification in the DHCP message be the IP address binding of this devices allocation.
Wherein, but the sign of unique identification ppp link is one of following:
Set in advance certain sign in equipment, this sign can be provided with by other agreement, and preferably the whole network is unique;
The link No. of ppp link is fit to have only on each ppp link the situation of a dhcp client equipment;
The physical port numbering of ppp link.
But when using the sign of the equipment of ppp link to insert the DHCP message unique identification as hardware address, can fill out by the equipment that is positioned at ppp link transmission DHCP message one side, also can fill out, can all fill out by both sides by the equipment that is positioned at ppp link reception DHCP message one side.The scheme that both sides are all filled out is better compatible when the common networking of equipment of different vendor, does not worry that the equipment of other factory of opposite end is filled out relevant information not according to the mode that this manufacturer requires.
An object lesson of the DHCP reciprocal process on ppp link as shown in Figure 4, the definition of wherein DHCP message can be referring to standard agreement RFC1541 etc.
In step 410, subordinate equipment sends DHCPDISCOVER (discovery) message on the ppp link of having set up.This machine IP inserts the address address of current PPP port.
After this enter step 420, higher level equipment is received the DHCP DISCOVER message on the ppp link, inserts the ppp link sign at message when higher level equipment receives.
Higher level equipment is according to DHCP distributing IP address algorithm, the distributing IP address, with the hardware address in institute's IP address allocated and the DHCP DISCOVER message (being the ppp link sign in this example) binding, send DHCP OFFER message to subordinate equipment by ppp link then.Server in the message (server), client (client) can fill in into the address address at ppp link two ends, also can not fill in.
After this enter step 430, subordinate equipment is received DHCP OFFER message, sends DHCPrequest (request) message again, to higher level's device request device configuration information.
After this enter step 440, higher level equipment is received the request of subordinate equipment, issues DHCP ACK (replying) message and gives subordinate equipment, can carry the configuration information of equipment in the DHCP scaling option.Also can use other fields of dhcp response, such as sname, fields such as file are carried the configuration information of equipment.
Present embodiment does not have specific requirement to upper and lower level equipment, and as an example, higher level equipment can be a base station controller, and subordinate equipment can be the base station.Can finish the configuration of base station by definition DHCP frame OPTION field, disposable obtaining safeguarded IP and inserted the IP address.
In an object lesson, the Option type of employing is 43, and is as shown in table 2, and the particular content of Option custom field is as shown in table 3.
| Option type (1 byte) | Length | Self-defined Magic number (4 byte) | Make field type by oneself |
| 43 | The length of whole expansion option | ?0xDEADBEAF | Referring to table |
Table 2
| Type id | Length | The |
| 1 | 16 | The unique sign in base station |
| 2 | 1 | The port type that base station requests is sent, fe/ppp/mp/.... |
| 3 | The Ip address size | Base station maintenance IP |
| 4 | The IP mask-length | Base station maintenance IP mask |
| 5 | The Ip address size | Base station maintenance passage opposite end IP |
| 6 | The IP mask-length | Base station maintenance passage opposite end IP mask |
| 7 | The Ip address size | Obtain the server address of base station configuration |
| 8 | Indefinite, maximum 100 bytes | Obtain the FTP path of base station configuration, be legal pathname. |
| 9 | Indefinite, maximum 16 bytes | Obtain FTP user's name of base station configuration |
| 10 | Indefinite, maximum 16 bytes | Obtain the ftp password of base station configuration |
Table 3
On PPP, pass through dhcp process, the base station can disposablely obtain all required configuration informations of maintenance channel, thereby can on serial links such as E1/T1, obtain device configuration information automatically by PPP, significantly reduced the workload of manual maintenance, and protocol compatibility is good, the support of existing DHCP agreement can be made full use of, existing DHCP management maintenance instrument can be used.
In the present embodiment, as a preferred version, disposable all the required configuration informations of maintenance channel that obtain in base station are appreciated that also and can finish the transmission of configuration information several times, and each dhcp process only passes the configuration information of a part.
Second execution mode of the present invention improves on first execution mode, higher level equipment and/or subordinate equipment be at the transmission subordinate equipment during to the DHCP message of higher level's device request configuration information, but add the sign of this ppp link of unique identification in this DHCP message;
But this higher level equipment sends the configuration information corresponding with the sign of this ppp link of unique identification by the DHCP message to this subordinate equipment.
For example, when higher level equipment is received DHCP DISCOVER message, according to the ppp link of collecting this DHCPDISCOVER message, ppp link number is write in this DHCPDISCOVER message as hardware address, and number find corresponding configuration information according to this ppp link, by the DHCPACK message this configuration information is carried to subordinate equipment.
By adopting the allocation strategy of subordinate equipment configuration information and ppp link binding, can realize that equipment disposition is relevant with physical location, at original website exchange device more, perhaps existing equipment replacing place can not need maintenance work, obtains automatically.In whole network configuration, only need be configured at the central apparatus node like this, downstream site can obtain configuration automatically, significantly reduces the workload of configuration conflict and configuration.
The 3rd execution mode of the present invention relates to the technical scheme that obtains device configuration information in ppp link by the DHCP message.
The system configuration of obtaining configuration information comprises the upper and lower level equipment that connects with serial link as shown in Figure 2; Serial transmission line includes but not limited to RS232 serial ports, E1, T1, J1, E3, T3 etc.
All comprise the module of consulting to set up ppp link by the IPCP layer in the upper and lower level equipment;
Higher level equipment also comprises configuration information is carried at the module that is transferred to subordinate equipment at least one predetermined consultation parameter of IPCP message.
The same with first execution mode, present embodiment does not have specific requirement to upper and lower level equipment, and as an example, higher level equipment can be a base station controller, and subordinate equipment can be the base station, and configuration information can be the required configuration information of the maintenance channel of base station.
As shown in Figure 5, upper and lower level equipment carries out the negotiation of LCP layer earlier.Carrying out the IPCP layer again after the LCP layer is consulted to finish consults.When the IPCP layer was consulted, this higher level equipment was carried at configuration information at least one predetermined consultation parameter of IPCP message and is transferred to this subordinate equipment.
The IPCP layer consults specifically to comprise following steps:
Subordinate equipment sends to higher level equipment and consults to initiate message;
After higher level equipment is received and is consulted to initiate message, in the message of responding to subordinate equipment, carry PrimaryDNS Server Address (primary dns server address), Primary NBNS Server Address (main NBNS server address), Secondary DNS Server Address (from dns server address), Secondary NBNS Server Address (from the NBNS server address) etc. and consult option, consult to carry in the option configuration information that subordinate equipment needs at these;
After subordinate equipment is received and is consulted option, from options such as Primary DNS Server Address, PrimaryNBNS Server Address, Secondary DNS Server Address, Secondary NBNSServer Address, obtain configuration information, reply response message ACK;
After higher level equipment is received ACK, send negotiation to subordinate equipment and finish message.
Use for fear of the address mistake takes place when docking with general PPP interface equipment, can arrange special IP address, perhaps special rule limits and differentiates.Such as 172.168.89.89, as special P rimary DNS Server Address, what expression was carried is the maintenance channel configuration information.
Also can adopt the method for address check, adopt Primary DNS Server Address (perhaps any one other negotiate address) and Secondary DNS Server Address certain rule to carry out verification, be kept to a fixing particular values such as Secondary DNS Server Address mutually with Primary DNS Server Address, what reach the affirmation transmission is the purpose of maintenance channel configuration information.
Do not meet pre-defined rule if find the information of obtaining, then judge and do not use these to consult option, this moment, subordinate equipment can give the NACK response of corresponding option.
In the present embodiment, higher level equipment carries configuration information by obsolete consultation parameter at ordinary times when the IPCP layer is consulted, realize the automatic configuration of subordinate equipment.This scheme applicability is wide, can utilize standard agreement, only need make amendment on protocol configuration, does not need to revise agreement itself.In actual use, adopt the subordinate equipment of this configuration to dock, also can dock with common PPP opposite equip. with the higher level equipment that carries configuration information.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (5)
1. method of obtaining configuration information, it is characterized in that, the upper and lower level equipment that connects with serial link carries out interconnection protocol control protocol IPCP layer when consulting, this higher level equipment is carried at configuration information at least one predetermined consultation parameter of IPCP message and is transferred to this subordinate equipment, and described IPCP message is by being provided with particular value or adopting specific rule to carry out verification to the value in described at least one predetermined consultation parameter and indicate at least one predetermined consultation parameter in the described IPCP message and carry described configuration information in described at least one predetermined consultation parameter.
2. the method for obtaining configuration information according to claim 1 is characterized in that, described serial transmission line is one of following: RS232 serial ports, E1, T1, J1, E3, T3.
3. the method for obtaining configuration information according to claim 1 is characterized in that, carries described predetermined consultation parameter of joining information and be one of following or its combination in any:
“Primary?DNS?Server?Address”、“Primary?NBNS?Server?Address”、“Secondary?DNS?Server?Address”、“Secondary?NBNS?Server?Address”。
4. a system that obtains configuration information is characterized in that, comprises the upper and lower level equipment that connects with serial link;
Comprise the module of consulting to set up ppp link by the IPCP layer in the described upper and lower level equipment;
Described higher level equipment also comprises configuration information is carried at the module that is transferred to described subordinate equipment at least one predetermined consultation parameter of IPCP message, and described IPCP message is by being provided with particular value or adopting specific rule to carry out verification to the value in described at least one predetermined consultation parameter and indicate at least one predetermined consultation parameter in the described IPCP message and carry described configuration information in described at least one predetermined consultation parameter.
5. the system that obtains configuration information according to claim 4 is characterized in that described higher level equipment is a base station controller, and described subordinate equipment is the base station;
Described configuration information is the required configuration information of the maintenance channel of base station.
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| CN2008100863532A CN101257496B (en) | 2006-11-13 | 2006-11-13 | Method and system for acquiring allocating information |
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| CNB2006101466659A Division CN100426816C (en) | 2006-11-13 | 2006-11-13 | Method and system for sending DHCP message and obtaining configuration information by PPP line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101640923A (en) | 2009-08-20 | 2010-02-03 | 深圳华为通信技术有限公司 | Method and device for acquiring network configuration information |
| CN102413541A (en) * | 2010-09-25 | 2012-04-11 | 中兴通讯股份有限公司 | Node parameter configuring method and system |
| CN101984581A (en) * | 2010-11-04 | 2011-03-09 | 中兴通讯股份有限公司 | Method and system for opening data communication network |
| CN103051651B (en) * | 2011-10-17 | 2017-12-26 | 中兴通讯股份有限公司 | Minimum activation number of links processing method and processing device |
| CN102710760B (en) * | 2012-05-24 | 2015-07-22 | 杭州华三通信技术有限公司 | Embedded network terminal synchronous configuration method and equipment |
| CN104618520B (en) * | 2013-11-04 | 2018-06-15 | 华为技术有限公司 | IP address configuration method, equipment and system |
| CN104702430A (en) * | 2013-12-10 | 2015-06-10 | 中兴通讯股份有限公司 | Method and system for managing networks, and network element devices |
| CN105471640B (en) * | 2015-11-24 | 2019-04-12 | 中国电信股份有限公司 | Remote antenna engineering parameter cognitive method, system and antenna |
| CN106161102B (en) * | 2016-08-12 | 2019-07-09 | 李纯雅 | A kind of IP RAN network optimization emulation mode and system |
| WO2018137192A1 (en) * | 2017-01-25 | 2018-08-02 | 华为技术有限公司 | Signal transmission channel processing method, device, and system |
| CN107040410A (en) * | 2017-03-30 | 2017-08-11 | 上海斐讯数据通信技术有限公司 | System and implementation method that a kind of dynamic state server configuration data is found automatically |
| CN109510777B (en) * | 2018-11-09 | 2022-02-22 | 迈普通信技术股份有限公司 | Flow table arranging method and device and SDN controller |
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