CN101060503A - A method for discovering the broad band network gateway - Google Patents
A method for discovering the broad band network gateway Download PDFInfo
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- CN101060503A CN101060503A CN 200710074528 CN200710074528A CN101060503A CN 101060503 A CN101060503 A CN 101060503A CN 200710074528 CN200710074528 CN 200710074528 CN 200710074528 A CN200710074528 A CN 200710074528A CN 101060503 A CN101060503 A CN 101060503A
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- wideband network
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Abstract
The disclosed lookup method for broadband network gateway comprises: b. access point sends request for looking up the gateway; and c. the gateway returns the gateway distribution message. This invention ensures finding out gateway in time, and improves business flexibility.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of discover method of wideband network gateway.
Background technology
At present the framework of broadband access network comprises following a few part: with the home gateway be core user network, access node (Access Node, AN), aggregation networks and wideband network gateway (Broadband Network Gateway, BNG).Wherein, home gateway also can be called cpe device (Customer Premises Equipment, ustomer premises access equipment); Access node is finished the multi-form access of user, as DSLAM (DSL Access Multiplex, DSL couple in multiplexer) etc.; Aggregation networks is finished the function of convergence and exchange; But wideband network gateway is meant application bandwidth and QoS (Quality of Service, service quality) Ce Lve IP (Interniet Protocol Internet Protocol) edge router, as BRAS (Broadband Remote Access Server, Broadband Remote Access Server) and business router etc.
Along with developing rapidly of broadband access network, access node is just becoming the multi-service linkage unit based on Ethernet.Under the situation of typical networking as shown in Figure 1, user's miscellaneous service, as Internet access, IPTV (Internet Protocol Television, IPTV), VoIP (Voice over IP, IP phone) etc. business offers the user by various terminals, various terminals are connected to access node by home gateway again, and access node is connected on the wideband network gateway that miscellaneous service can be provided, and has omitted aggregation networks among the figure.At this moment because the network side of access node is connecting a plurality of BNG, access node will determine to transmit service request from user to which BNG of network side in the service request of receiving user side and when distinguishing will ask professional.Access node addresses this problem and mainly is to use static configuration 802.1Q VLAN (Virtual LocalArea Network at present, VLAN) method of mark and relevant 802.1p priority bit is finished, and perhaps finishes by the mode of static configuration VLAN stacking.Such as, come several service VLAN of static configuration and corresponding priority level by network management system, service VLAN connects access node and professional wideband network gateway is provided, the corresponding service that the carrying wideband network gateway provides in the service VLAN, the corresponding service request of shining upon user side then is in corresponding business VLAN, and the simplest situation is to realize by port mapping.The implementation of VLAN stacking also is to realize similar static mappings.
This solution is finished by static configuration, though method is simple, is having new business to provide or during the network configuration variation of network side, flexibility and extendibility are all very poor, and supporting business carries out well.
Summary of the invention
Technical problem to be solved by this invention provides a kind of discover method of wideband network gateway, and improving access node provides professional flexibility and extendibility.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of discover method of wideband network gateway may further comprise the steps:
B, access node send the wideband network gateway request message to find wideband network gateway;
C, wideband network gateway return wideband network gateway and give out information.
Wherein, also comprise step before the described step b:
A, wideband network gateway give out information to access node transmission wideband network gateway and issue wideband network gateway.
Wherein, also comprise step after the described step c:
D, wideband network gateway send the wideband network gateway termination messages to access node and stop wideband network gateway.
Wherein, described wideband network gateway gives out information and can also can provide that the cycle sends on the professional interface at wideband network gateway.
Wherein, the content that gives out information of described wideband network gateway comprises: the network address of wideband network gateway, the available business of wideband network gateway, the priority of the available business of wideband network gateway, the employed protocol information of the available business of wideband network gateway, the time interval that gives out information and send.
Wherein, described method also comprises, will send wideband network gateway and give out information under following several situations: (1) cycle issue intervalometer is overtime; (2) the business interface startup/initialization of wideband network gateway/enable, restart/reinitialize/enable again; (3) the wideband network gateway discovery feature is opened; (4) wideband network gateway starts; (5) receive the wideband network gateway request message.
Wherein, described method also comprises, will send the wideband network gateway termination messages under following several situations: 1. close the wideband network gateway discovery feature on an interface; 2. interface is gone to enable by the keeper; 3. interface is deleted; 4. close the wideband network gateway discovery feature; 5. wideband network gateway is closed.
Wherein, wideband network gateway request message described in the step b sends under following several situations: (i) interface startup/initialization of access node/enable, restart/reinitialize/enable again; (ii) the wideband network gateway discovery feature is opened; (iii) access node starts.
Wherein, wideband network gateway described in the method gives out information, the wideband network gateway request message, the wideband network gateway termination messages is carried on the IGMP of IPv4 or the multicast listener of IPv6 finds in the protocol message.
Wherein, described wideband network gateway gives out information and is sent on the multicast address that comprises all access nodes; Described wideband network gateway request message is sent on the multicast address that includes all wideband network gateways; Described wideband network gateway termination messages is sent on the multicast address that comprises all access nodes.
The present invention has following beneficial effect:
A kind of discover method of wideband network gateway is provided, can guarantee that access node dynamically finds wideband network gateway in time, solved the static configuration problem of the wideband network gateway of access node association, having improved access node provides professional flexibility and extendibility, convenient professional carrying out.
Description of drawings
Fig. 1 is a network structure;
Fig. 2 is the discover method flow chart of wideband network gateway of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the network structure according to the embodiment of the invention, as shown in the figure, this network is made of user terminal (voice terminal 102, data terminal 104 and video terminal 106), home gateway 108, access node 110 and wideband network gateway (BNG (IPTV) 120, BNG (BRAS) 140, BNG (VoIP) 160).Wherein, various user terminals are connected to access node 110 by home gateway 108, and access node 110 is connected on a plurality of wideband network gateways by link 10,20 and 30.In the present embodiment, access node 110 adopts DSLAM, wideband network gateway BNG (IPTV) 120 can provide the IPTV business, and wideband network gateway BNG (BRAS) 140 can provide the BAS Broadband Access Server business, and wideband network gateway BNG (VoIP) 160 can provide IP telephone service.
Fig. 2 is the discover method flow chart of wideband network gateway of the present invention, as shown in the figure, the present invention includes three kinds of message: wideband network gateway gives out information, wideband network gateway request message, wideband network gateway termination messages.In an embodiment of the present invention, these message bearings are at the IGMP of IPv4 (Internet Group Management Protocol, IGMP) or in the MLD of IPv6 (Multicast Listener Discovery, the multicast listener the finds agreement) message.
The present invention includes following steps:
Wherein, wideband network gateway gives out information, and the cycle sends on the interface of the provided business of wideband network gateway, and it also can send when response wideband network gateway request message.
Specifically, will send wideband network gateway under following several situations gives out information: (1) cycle issue intervalometer is overtime; (2) the business interface startup/initialization of wideband network gateway/enable, restart/reinitialize/enable again; (3) open the wideband network gateway discovery feature; (4) wideband network gateway starts; (5) receive the wideband network gateway request message; (6) under other specific situation.
The content that wideband network gateway gives out information comprises: the address of wideband network gateway, the available business of wideband network gateway, the priority of the available business of wideband network gateway, the employed protocol information of the available business of wideband network gateway, the interval that sends of giving out information etc.
In an embodiment of the present invention, wideband network gateway gives out information and sends to access node 110 by link 10,20 and 30 respectively by wideband network gateway 120,140,160.The form that wideband network gateway gives out information is as follows:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Ad.?Interval?| Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Service | Priority | Protocol |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, Type is a type field, and the type of Indication message refers to give out information here, and for IPv4, its value is set to 0 * 40, and for IPv4, its value is set to 161, also can get other value, only otherwise conflict gets final product.
Ad.Interval is the issue spacer domain, the interval that gives out information and send that the indication cycle sends, and unit is second.
Checksum is verification and territory, verifies the correctness of message.
Service is a business domains, the business that indication provides, and its desirable value has: IPTV (1), BRAS (2), VoIP (3).Also desirable other value is convenient to expand.
Protocol is a protocol domain, and indication can provide professional employed protocol information, for different professional employed protocol information differences.As for the IPTV business, protocol information has IGMPv1 (1), IGMPv2 (2), IGMPv3 (3), MLDv1 (4), MLDv2 (5) etc.; For the BRAS business, protocol information has PPPoE (Point-to-Point Protocol overEthernet, peer-peer protocol on the Ethernet) (1), DHCP (Dynamic HostConfiguration Protocol, DHCP) (2) etc.; For the VoIP business, H.248 protocol information has (1) etc.
In this step, the wideband network gateway request message is sent by access node, is used for giving out information to the wideband network gateway request, finds wideband network gateway with this.
Wherein, when as long as access node wishes to find wideband network gateway on the link that connects, it all can send the wideband network gateway request message, and concrete condition comprises: (i) interface startup/initialization of access node/enable, restart/reinitialize/enable again; (ii) open the wideband network gateway discovery feature; (iii) access node starts; (iv) under other specific situation.
In an embodiment of the present invention, the wideband network gateway request message sends to wideband network gateway 120,140,160 by link 10,20 and 30 respectively by access node 110.The form of wideband network gateway request message is as follows:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Reserved | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, Type is a type field, and the type of Indication message refers to that here this is a request message, and for IPv4, its value is set to 0 * 41, and for IPv4, its value is set to 162.Also can get other value, only otherwise conflict gets final product.
Reserved keeps the territory, is set to zero when sending, and ignores when receiving.
Checksum is verification and territory, verifies the correctness of message.
The wideband network gateway termination messages is used for notifying the access node wideband network gateway that the business that provides is provided on the interface of issuing service.Access node can be according to certain strategy when receiving the wideband network gateway termination messages, and deletion sends the wideband network gateway of wideband network gateway termination messages from the wideband network gateway tabulation of activity.
To send the wideband network gateway termination messages under following several situations: 1. on an interface, close the wideband network gateway discovery feature; 2. interface is gone to enable by the keeper; 3. interface is deleted; 4. close the wideband network gateway discovery feature; 5. wideband network gateway is closed; 6. under other specific situation.
In an embodiment of the present invention, the wideband network gateway termination messages sends to access node 110 by link 10,20 and 30 respectively by wideband network gateway 120,140,160.The form of wideband network gateway termination messages is as follows:
0 1 2 3
0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1?2?3?4?5?6?7?8?9?0?1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Reserved | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein, Type is a type field, and the type of Indication message refers to that here this is a termination messages, and for IPv4, its value is set to 0 * 42, and for IPv4, its value is set to 163.Also can get other value, only otherwise conflict gets final product.
Reserved keeps the territory, is set to zero when sending, and ignores when receiving.
Checksum is verification and territory, verifies the correctness of message.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of discover method of wideband network gateway is characterized in that, may further comprise the steps:
B, access node send the wideband network gateway request message to find wideband network gateway;
C, wideband network gateway return wideband network gateway and give out information.
2, the discover method of wideband network gateway as claimed in claim 1 is characterized in that, also comprises step before the described step b:
A, wideband network gateway give out information to access node transmission wideband network gateway and issue wideband network gateway.
3, the discover method of wideband network gateway as claimed in claim 1 is characterized in that, also comprises step after the described step c:
D, wideband network gateway send the wideband network gateway termination messages to access node and stop wideband network gateway.
As the discover method of claim 1,2 or 3 described wideband network gateways, it is characterized in that 4, described wideband network gateway gives out information and can also can provide that the cycle sends on the professional interface at wideband network gateway.
5, the discover method of wideband network gateway as claimed in claim 4, it is characterized in that the content that described wideband network gateway gives out information comprises: the network address of wideband network gateway, the available business of wideband network gateway, the priority of the available business of wideband network gateway, the employed protocol information of the available business of wideband network gateway, the time interval that gives out information and send.
6, the discover method of wideband network gateway as claimed in claim 4 is characterized in that, described method also comprises, will send wideband network gateway and give out information under following several situations: (1) cycle issue intervalometer is overtime; (2) the business interface startup/initialization of wideband network gateway/enable, restart/reinitialize/enable again; (3) the wideband network gateway discovery feature is opened; (4) wideband network gateway starts; (5) receive the wideband network gateway request message.
7, the discover method of wideband network gateway as claimed in claim 4 is characterized in that, described method also comprises, will send the wideband network gateway termination messages under following several situations: 1. close the wideband network gateway discovery feature on an interface; 2. interface is gone to enable by the keeper; 3. interface is deleted; 4. close the wideband network gateway discovery feature; 5. wideband network gateway is closed.
8, the discover method of wideband network gateway as claimed in claim 4, it is characterized in that the request message of wideband network gateway described in the step b sends under following several situations: (i) interface startup/initialization of access node/enable, restart/reinitialize/enable again; (ii) the wideband network gateway discovery feature is opened; (iii) access node starts.
9, the discover method of wideband network gateway as claimed in claim 4, it is characterized in that wideband network gateway described in the method gives out information, the wideband network gateway request message, the wideband network gateway termination messages is carried on the IGMP of IPv4 or the multicast listener of IPv6 finds in the protocol message.
10, the discover method of wideband network gateway as claimed in claim 4 is characterized in that, described wideband network gateway gives out information and is sent on the multicast address that comprises all access nodes; Described wideband network gateway request message is sent on the multicast address that includes all wideband network gateways; Described wideband network gateway termination messages is sent on the multicast address that comprises all access nodes.
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| CN 200710074528 CN101060503A (en) | 2007-05-22 | 2007-05-22 | A method for discovering the broad band network gateway |
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| CN 200710074528 CN101060503A (en) | 2007-05-22 | 2007-05-22 | A method for discovering the broad band network gateway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209120A (en) * | 2013-03-14 | 2013-07-17 | 中兴通讯股份有限公司 | Gateway device, VoIP (Voice over Internet Portocol) call management and control system and VoIP call management and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209120A (en) * | 2013-03-14 | 2013-07-17 | 中兴通讯股份有限公司 | Gateway device, VoIP (Voice over Internet Portocol) call management and control system and VoIP call management and control method |
| CN103209120B (en) * | 2013-03-14 | 2017-04-26 | 中兴通讯股份有限公司 | Gateway device, VoIP (Voice over Internet Portocol) call management and control system and VoIP call management and control method |
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Open date: 20071024 |