CN109660378B - Method, device, equipment and storage medium for maintaining normal communication of home gateway - Google Patents
Method, device, equipment and storage medium for maintaining normal communication of home gateway Download PDFInfo
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- CN109660378B CN109660378B CN201710948206.0A CN201710948206A CN109660378B CN 109660378 B CN109660378 B CN 109660378B CN 201710948206 A CN201710948206 A CN 201710948206A CN 109660378 B CN109660378 B CN 109660378B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
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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
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
Abstract
The invention discloses a method, a device, equipment and a storage medium for keeping normal communication of a home gateway, which relate to the technical field of communication, and the method comprises the following steps: when the home gateway detects that the DHCP server is in an abnormal state, the home gateway maintains the existing network resources for providing network services for users; when the home gateway detects that the DHCP server is restored to a normal state, the home gateway acquires the latest network resource distributed by the DHCP server; and the home gateway updates the existing network resources by using the latest network resources. In the time period from the abnormity of the DHCP server of the operator to the recovery, the home gateway user can still utilize the original network resource information to normally use the network service, and can not sense the phenomenon of network abnormity, thereby improving the satisfaction degree of the home gateway user and the service quality of the operator.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for maintaining normal communication of a home gateway.
Background
A Dynamic Host Configuration Protocol (DHCP), which allocates Configuration information related to an Internet Protocol (IP) to a client on a Transmission Control Protocol/Internet Protocol (TCP/IP) network, so that the client can obtain basic network routing information, thereby implementing network communication. The method is based on Bootstrap Protocol (BOOTP Protocol), and adds functions of automatically allocating available network addresses and the like on the basis of the BOOTP Protocol.
The home gateway, a network device located inside the home user, is a hub for connecting an external network and a home user network, and provides rich and efficient network services for people's daily life.
There are various ways for the home gateway to obtain network information, and at present, the application is mostly a DHCP Protocol and a Point-to-Point Protocol over Ethernet (PPPoE) Protocol based on Ethernet. Wherein the DHCP protocol is adopted by many operators in its simple and easy to use manner.
In a network environment where the DHCP protocol is used to obtain IP configuration information, if a DHCP server of an operator fails, a home gateway releases resources such as an IP address after a certain time limit according to the requirements of the standard DHCP protocol. At this time, the whole home gateway network is disconnected, and the network service cannot be provided for the user continuously.
In order to solve the problem, from the perspective of the home gateway, the invention provides a method for maintaining normal network service of the home gateway when the DHCP server of the operator is abnormal.
Disclosure of Invention
The method, the device, the equipment and the storage medium for maintaining the normal communication of the home gateway provided by the embodiment of the invention solve the problem that the home gateway cannot normally perform network communication under the abnormal condition of the DHCP server.
The method for maintaining the normal communication of the home gateway provided by the embodiment of the invention comprises the following steps:
when the home gateway detects that the DHCP server is in an abnormal state, the home gateway maintains the existing network resources for providing network services for users;
when the home gateway detects that the DHCP server is restored to a normal state, the home gateway acquires the latest network resource distributed by the DHCP server;
and the home gateway updates the existing network resources by using the latest network resources.
Preferably, after the home gateway maintains the existing network resources for providing the network service to the user when the home gateway detects that the DHCP server is in the abnormal state, the method further includes:
and the home gateway utilizes the existing network resources kept during the abnormal state of the DHCP server to continuously provide network services for the user.
Preferably, when the home gateway detects that the DHCP server is restored to a normal state, the acquiring, by the home gateway, the latest network resource allocated by the DHCP server includes:
the home gateway selects one piece of network resource information from at least one piece of available network resource information provided by the DHCP server;
and the home gateway requests the network resource corresponding to the selected network resource information from the DHCP server so that the DHCP server can allocate the network resource to the home gateway as the latest network resource according to the request and the actual network resource using condition.
Preferably, the updating, by the home gateway, the existing network resource by using the latest network resource includes:
the home gateway comparing the existing network resource with the latest network resource;
and if the existing network resource is inconsistent with the latest network resource, the home gateway updates the existing network resource by using the latest network resource.
Preferably, after the home gateway updates the existing network resource with the latest network resource, the method further includes:
and the home gateway provides network service for the user by using the latest network resource.
The device for maintaining the normal communication of the home gateway provided by the embodiment of the invention comprises the following components:
the system comprises a resource keeping module, a Dynamic Host Configuration Protocol (DHCP) server and a user interface module, wherein the resource keeping module is used for keeping the existing network resources for providing network services for users when the home gateway detects that the DHCP server is in an abnormal state;
the resource acquisition module is used for acquiring the latest network resource distributed by the DHCP server when the home gateway detects that the DHCP server is recovered to a normal state;
and the resource updating module is used for updating the existing network resources by using the latest network resources.
Preferably, the method further comprises the following steps:
and the network service module is used for utilizing the maintained existing network resources to continuously provide network services for the user when the DHCP server is in an abnormal state.
Preferably, the network service module is further configured to provide a network service to the user by using the latest network resource after the existing network resource is updated by using the latest network resource.
The equipment for maintaining the normal communication of the home gateway provided by the embodiment of the invention comprises: a processor, and a memory coupled to the processor; the memory stores a program which can run on the processor and keeps the home gateway in normal communication, and the program which keeps the home gateway in normal communication realizes the steps of the method for keeping the home gateway in normal communication when being executed by the processor.
According to an embodiment of the present invention, there is provided a storage medium, on which a program for maintaining normal communication of a home gateway is stored, where the program for maintaining normal communication of the home gateway is executed by a processor to implement the steps of the method for maintaining normal communication of the home gateway.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the time period from the abnormity of the DHCP server of the operator to the recovery, the home gateway user can still utilize the original network resource information to normally use the network service, and can not sense the phenomenon of network abnormity, thereby improving the satisfaction degree of the home gateway user and the service quality of the operator.
Drawings
Fig. 1 is a flowchart of a method for maintaining normal communication of a home gateway according to an embodiment of the present invention;
fig. 2 is a block diagram of an apparatus for maintaining normal communication of a home gateway according to an embodiment of the present invention;
FIG. 3 is a standard DHCP protocol processing flow diagram;
fig. 4 is a flow chart of DHCP protocol processing after use in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a flowchart of a method for maintaining normal communication of a home gateway according to an embodiment of the present invention, and as shown in fig. 1, the steps include:
step S101: when the home gateway detects that a Dynamic Host Configuration Protocol (DHCP) server is in an abnormal state, the home gateway maintains the existing network resources for providing network services for users.
After sending a Request message to a DHCP server to Request to continue using the existing network resources, if a message responded by the DHCP server in response to the Request message is not received, it indicates that the DHCP server is in an abnormal state, and at this time, the home gateway maintains the existing network resources for providing network services to the user, so that the network services are continuously provided to the user by using the maintained existing network resources while the DHCP server is in the abnormal state.
Step S102: and when the home gateway detects that the DHCP server is recovered to a normal state, the home gateway acquires the latest network resource distributed by the DHCP server.
When the DHCP server is in an abnormal state, the home gateway continuously sends Discover messages to the DHCP server by using the existing network resources to provide network services for users until receiving the Offer messages responded by the DHCP server, and at this time, the DHCP server is restored to be normal. And then, the home gateway obtains at least one piece of available network resource information provided by the DHCP server by analyzing the Offer message, selects one piece of network resource information from the available network resource information, and requests the DHCP server for the network resource corresponding to the selected network resource information, so that the DHCP server allocates the network resource to the home gateway as the latest network resource according to the request and the actual network resource use condition.
Step S103: and the home gateway updates the existing network resources by using the latest network resources.
The home gateway compares the existing network resource with the latest network resource, if the existing network resource and the latest network resource are consistent, the adjustment is not carried out, if the existing network resource and the latest network resource are inconsistent, the home gateway updates the existing network resource by using the latest network resource, and then the network service is provided for the user by using the latest network resource.
The network resource is a resource such as an IP address.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, and the program may be stored in a computer readable storage medium. Furthermore, the present invention may also provide a storage medium storing a program for maintaining normal communication of a home gateway, where the program for maintaining normal communication of the home gateway is executed by a processor to implement the steps of the method for maintaining normal communication of the home gateway. . The storage medium may include ROM/RAM, magnetic disk, optical disk, and U disk.
Fig. 2 is a block diagram of an apparatus for maintaining normal communication of a home gateway according to an embodiment of the present invention, as shown in fig. 2, including:
the system comprises a resource keeping module, a Dynamic Host Configuration Protocol (DHCP) server and a user interface module, wherein the resource keeping module is used for keeping the existing network resources for providing network services for users when the home gateway detects that the DHCP server is in an abnormal state;
the resource acquisition module is used for acquiring the latest network resource distributed by the DHCP server when the home gateway detects that the DHCP server is recovered to a normal state;
and the resource updating module is used for updating the existing network resources by using the latest network resources.
Further, the apparatus further comprises:
and the network service module is used for continuously providing the network service for the user by using the maintained existing network resource during the abnormal state of the DHCP server, and is also used for providing the network service for the user by using the latest network resource after the existing network resource is updated by using the latest network resource.
The device can be arranged at a home gateway, and the working process of the device is as follows: when detecting that the DHCP server is in an abnormal state according to the interaction condition of the home gateway and the DHCP server, the resource holding module holds the existing network resources so that the network service module can continuously provide network services for users by using the held existing network resources during the abnormal state of the DHCP server. And meanwhile, the state of the DHCP server is continuously detected, if the DHCP server is detected to be recovered to the normal state, the resource acquisition module acquires the latest network resource distributed by the DHCP server, then the resource updating module updates the existing network resource by using the latest network resource, and the network service module provides network service for the user by using the latest network resource.
The embodiment provides a device for maintaining normal communication of a home gateway, which includes: a processor, and a memory coupled to the processor; the memory stores a program which can run on the processor and keeps the home gateway in normal communication, and the program which keeps the home gateway in normal communication realizes the steps of the method for keeping the home gateway in normal communication when being executed by the processor.
In summary, the embodiment of the present invention provides a modified DHCP protocol flow method based on a standard DHCP protocol flow, and realizes a function of maintaining a normal network service of a home gateway under an abnormal condition of a DHCP server of an operator. The embodiment of the invention is an adjustment to the standard DHCP protocol flow.
When the DHCP server of the operator is abnormal and the DHCP message request of the home gateway cannot be responded, the home gateway does not release all the existing network resources (including IP and gateway information) according to the requirement of a DHCP protocol, but reserves the current network resource information; and meanwhile, continuously sending a DISCOVER request message of the DHCP protocol to the outside according to the requirements of the standard DHCP protocol. Under the condition that the DHCP server normally responds, the home gateway can still update the network resource information in the home gateway according to the requirement of the DHCP server, which meets the requirement of a standard DCHP protocol; when the DHCP server is abnormal and the DHCP request message of the home gateway cannot be responded, the home gateway still sends a proper DISCOVER request according to the DHCP protocol requirement, and meanwhile, continues to hold the original network resource. After the DHCP server of the operator recovers abnormally, the DHCP server of the operator can reply the request message of the home gateway normally, and the home gateway can update the network resource of the home gateway according to the information provided by the DHCP server, and at the moment, the home gateway user can still use the network service normally. In the two processes, in the time period from the abnormality of the DHCP server of the operator to the recovery, the home gateway user can still use the network service normally through the original network resource information, and the network abnormality phenomenon cannot be perceived. The embodiment of the invention can improve the service quality of a broadband operator and the satisfaction degree of a home gateway user in the abnormal scene.
Fig. 3 is a standard DHCP protocol processing flow chart, fig. 4 is a DHCP protocol processing flow chart after the use of the embodiment of the present invention, as shown in fig. 3 and fig. 4, the embodiment of the present invention can maintain normal network communication of the home gateway within the time when the DHCP server of the operator is abnormal and recovers.
After this method is used, the DHCP service of the home gateway can be divided into 3 phases. In these 3 stages, the different behaviors of the DHCP client of the home gateway can ensure that the operating network of the home gateway is normal:
stage 1: after the DHCP server operates, the DHCP server is abnormal and can normally reply the DHCP message of the home gateway.
At this stage, the home gateway operates in a standard DHCP protocol flow, the specific process is shown in fig. 3.
1.1 a DHCP client of the home gateway firstly initiates a Discover request message to enable a server to acquire basic information of the home gateway, and at the moment, the DHCP server provides available network resource information;
1.2 the home gateway explicitly requests the resource by using the available network resource information provided by the DHCP server; the DHCP server confirms whether the home gateway can use the resource or not according to the actual network resource condition;
1.3 after receiving the clear available reply of the DHCP server to the request resource, the home gateway sets the relevant network resource information of the home gateway, wherein the information comprises IP address, default gateway and DNS server address.
After the above process is finished, the home gateway user can use the normal network service.
Stage 2: the DHCP server is abnormal after running for a period of time and can not reply the DHCP message request of the home gateway.
At this stage, the home gateway will use the modified DHCP protocol flow, as shown in fig. 4. At this time:
2.1 after T1 time out (1/2T), the home gateway will send unicast request information according to the DHCP protocol request, confirming whether the existing network resources can be used further. At this point, the DHCP server will not respond.
2.2 after T2 time out (7/8T), the home gateway will send the request information of broadcast according to the DHCP protocol requirement, confirm whether it can still use the existing network resources. At this point, the DHCP server will not respond.
2.3 after T is overtime, if according to the requirement of DHCP protocol, it will need to release the existing network resource; in this embodiment, the existing network resources are reserved, and the Discover message required by the DHCP protocol is sent at the same time.
During this phase, the home gateway user can still use normal network services.
Where T is the lease period of the network resource specified by the DHCP protocol.
Stage 3: after the DHCP server is recovered abnormally, the DHCP message request of the home gateway can be replied normally.
At this stage, the home gateway will use the modified DHCP protocol flow, as shown in fig. 4. At this time:
3.1 the DHCP client of the home gateway sends Discover message required by DHCP protocol, at this time, the DHCP server will provide available network resource information;
3.2 the home gateway explicitly requires the resources to be used with the available network resource information provided by the DHCP server. The DHCP server will confirm whether the home gateway can actually use the network resources according to the actual network resource usage.
3.3 the home gateway compares the clear available reply of the DHCP server to the request resource with the existing network resource; if the resource is consistent with the previous one, no adjustment is made; otherwise, updating the network resource information of the home gateway.
The embodiment of the invention provides an adjusted DHCP protocol flow on the basis of a standard DHCP protocol flow, and under the abnormal condition of a DHCP server of an operator, the home gateway keeps the existing network routing information and IP address until the DHCP server of the operator returns to normal, and the home gateway adjusts the network routing information according to the actual condition, thereby realizing the function of keeping the home gateway in normal communication under the abnormal condition of the DHCP server of the operator.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (10)
1. A method for maintaining normal communication of a home gateway is characterized by comprising the following steps:
when detecting that a Dynamic Host Configuration Protocol (DHCP) server is in an abnormal state, a DHCP client of the home gateway keeps the existing network resources distributed for the home gateway by the DHCP server;
the DHCP client of the home gateway sends a DISCOVER message to the DHCP server while keeping the existing network resources distributed by the DHCP server for the home gateway, and receives the latest network resources distributed for the home gateway when the DHCP server is restored to a normal state;
and the DHCP client of the home gateway updates the existing network resources distributed to the home gateway by the DHCP server by using the latest network resources distributed to the home gateway by the DHCP server.
2. The method of claim 1, wherein after maintaining the existing network resources allocated by the DHCP server for the home gateway, further comprising:
and the DHCP client of the home gateway utilizes the maintained existing network resources to continuously provide network services for the user.
3. The method of claim 1, wherein the receiving the latest network resource allocated to the home gateway when the DHCP server returns to a normal state comprises:
the DHCP client of the home gateway selects one piece of network resource information from at least one piece of available network resource information provided by the DHCP server;
and the DHCP client of the home gateway requests the network resource corresponding to the selected network resource information from the DHCP server, so that the DHCP server allocates the network resource to the home gateway as the latest network resource according to the request and the actual network resource use condition.
4. The method of claim 1, wherein the step of the DHCP client of the home gateway updating the existing network resource allocated to the home gateway by the DHCP server using the latest network resource allocated to the home gateway by the DHCP server comprises:
the DHCP client of the home gateway compares the existing network resources with the latest network resources;
and if the existing network resources are not consistent with the latest network resources, the DHCP client of the home gateway updates the existing network resources by using the latest network resources.
5. The method of claim 1, after the DHCP client of the home gateway updates the existing network resource allocated to the home gateway by the DHCP server using the latest network resource allocated to the home gateway by the DHCP server, further comprising:
and the DHCP client of the home gateway provides network service for the user by utilizing the latest network resource.
6. An apparatus for maintaining normal communication of a home gateway, comprising:
the system comprises a resource keeping module, a Dynamic Host Configuration Protocol (DHCP) server and a Dynamic Host Configuration Protocol (DHCP) server, wherein the resource keeping module is used for keeping the existing network resources distributed by the DHCP server for the home gateway when the DHCP client of the home gateway detects that the DHCP server is in an abnormal state;
a resource obtaining module, configured to send a DISCOVER message to a DHCP server while a DHCP client of the home gateway maintains existing network resources allocated to the home gateway by the DHCP server, and receive a latest network resource allocated to the home gateway when the DHCP server is restored to a normal state;
and the resource updating module is used for enabling a DHCP client of the home gateway to update the existing network resources distributed to the home gateway by the DHCP server by using the latest network resources distributed to the home gateway by the DHCP server.
7. The apparatus of claim 6, further comprising:
and the network service module is used for utilizing the maintained existing network resources to continuously provide the network service for the user.
8. The apparatus of claim 6, wherein the network service module is further configured to provide the network service to the user using the latest network resource after the existing network resource is updated using the latest network resource.
9. An apparatus for maintaining normal communication of a home gateway, comprising: a processor, and a memory coupled to the processor; the memory stores a program capable of running on the processor for maintaining normal communication of the home gateway, and the program for maintaining normal communication of the home gateway realizes the steps of the method for maintaining normal communication of the home gateway according to any one of claims 1 to 5 when executed by the processor.
10. A storage medium storing a program for maintaining normal communication of a home gateway, wherein the program for maintaining normal communication of the home gateway is executed by a processor to implement the steps of the method for maintaining normal communication of the home gateway according to any one of claims 1 to 5.
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| KR20060000342A (en) * | 2004-06-28 | 2006-01-06 | 주식회사 이지브로네트웍스 | Device for enabling intra-edge routing-less premises internet protocol communication and communication method using the same |
| US7711826B2 (en) * | 2005-03-22 | 2010-05-04 | Cisco Technology, Inc. | Remote survivable DHCP for a DHCP relay agent |
| CN101729559B (en) * | 2009-12-03 | 2012-12-19 | 中兴通讯股份有限公司 | Method and system for realizing backup of DHCP server |
| CN101729610A (en) * | 2009-12-15 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for backing up DHCP SERVER |
| CN103856572B (en) * | 2012-11-30 | 2019-04-09 | 中兴通讯股份有限公司 | A kind of method and home gateway of terminal device renewed treaty IP address |
| CN104734880A (en) * | 2014-12-02 | 2015-06-24 | 重庆尊贤科技有限公司 | DHCP backup system independent of DHCP server supporting and cooperation |
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