WO2017000625A1 - Procédé et appareil de gestion de serveur de protocole de configuration d'hôte dynamique (dhcp) - Google Patents

Procédé et appareil de gestion de serveur de protocole de configuration d'hôte dynamique (dhcp) Download PDF

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Publication number
WO2017000625A1
WO2017000625A1 PCT/CN2016/079088 CN2016079088W WO2017000625A1 WO 2017000625 A1 WO2017000625 A1 WO 2017000625A1 CN 2016079088 W CN2016079088 W CN 2016079088W WO 2017000625 A1 WO2017000625 A1 WO 2017000625A1
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WIPO (PCT)
Prior art keywords
dhcp
server
policy
dhcp server
relay
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PCT/CN2016/079088
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English (en)
Chinese (zh)
Inventor
徐丽荣
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中兴通讯股份有限公司
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Publication date
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Publication of WO2017000625A1 publication Critical patent/WO2017000625A1/fr

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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
    • 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]

Definitions

  • the present invention relates to the field of communications, and in particular, to a dynamic host configuration protocol DHCP server management method and apparatus.
  • the user obtains an IP address through the Dynamic Host Configuration Protocol (DHCP) to implement Internet access or voice service.
  • DHCP Dynamic Host Configuration Protocol
  • the DHCP client and the DHCP server are not in a LAN.
  • the access device has a DHCP relay function. After receiving the request packet sent by the DHCP client, the DHCP relay agent converts the unicast packet to the DHCP server and forwards the response packet sent by the DHCP server to the DHCP client.
  • the DHCP client can successfully obtain the DHCP client. IP address to implement related services.
  • a user who obtains an IP address using DHCP may not be able to access the network because the IP address cannot be obtained, and the telephone may not be available. If the recovery is not obtained for a long time, the user is likely to complain.
  • the invention provides a dynamic host configuration protocol DHCP server management method and device, so as to at least solve the problem that a user cannot obtain an IP address by using DHCP.
  • a dynamic host configuration protocol DHCP server management method including:
  • the DHCP relay sends a request message of the DHCP client to the first DHCP server according to the forwarding policy
  • the DHCP relay does not receive the response packet of the first DHCP server to the request packet, and the DHCP relay according to the forwarding policy is used in the preset time period and/or the preset number of forwarding times.
  • the first DHCP server switches to the second DHCP server.
  • the forwarding policy includes at least one of the following:
  • An active/standby policy configured to send the request packet to a primary server
  • a round robin policy configured to send the request message to the configured server in a round robin
  • the DHCP relay does not receive the preset time period and/or the preset number of forwarding times. After the response packet sent by the first DHCP server to the request packet, the method includes:
  • the DHCP relay sends an alarm message to the network management, where the alarm information indicates that the first DHCP server is unavailable.
  • the method further includes:
  • the DHCP relay continues to send the request message of the DHCP client to the first DHCP server according to the forwarding policy, and notifies the first DHCP server of the response message to the request message.
  • the network management alarm is restored.
  • the alarm information includes a network IP address of the first DHCP server
  • the alarm information includes identity identification ID information of a group to which the first DHCP server belongs.
  • the switching, by the DHCP relay, the first DHCP server to switch to the second DHCP server according to the forwarding policy includes:
  • the DHCP relay switches the first DHCP service to the second DHCP server of the first DHCP server, where the first DHCP
  • the server is a primary server
  • the second DHCP server is one or more standby servers of the primary server
  • the DHCP relay rotates the first DHCP server to the next one of the second DHCP servers;
  • the DHCP relay sends the request packet to all servers configured in the subnet to which the first DHCP server belongs.
  • the method includes:
  • the DHCP relay configures a reactivation time of the first DHCP server, and when the reactivation time, the DHCP relay confirms that the first DHCP server is available;
  • the DHCP relay switches the standby server of the first DHCP server to the primary server of the first DHCP server;
  • the DHCP relay bypasses the second DHCP server to the first DHCP server;
  • the DHCP relay sends the request packet to all servers configured in the subnet to which the first DHCP server belongs.
  • a dynamic host configuration protocol DHCP server management apparatus including:
  • the sending module is configured to send, by the DHCP relay, a request message of the DHCP client to the first DHCP server according to the forwarding policy;
  • the switching module is configured to receive, in the preset time period and/or the preset number of forwarding times, the DHCP relay does not receive the response packet of the first DHCP server to the request packet, and the DHCP relay is configured according to the The forwarding policy switches the first DHCP server to a second DHCP server.
  • the forwarding policy includes at least one of the following:
  • An active/standby policy configured to send the request packet to a primary server
  • a round robin policy configured to send the request message to the configured server in a round robin
  • the apparatus comprises:
  • the alarm module is configured to send the alarm information to the network administrator, where the alarm information indicates that the first DHCP server is unavailable.
  • the device further includes:
  • the alarm recovery module is configured to: the DHCP relay continues to send the request message of the DHCP client to the first DHCP server according to the forwarding policy, and receives the response message of the first DHCP server to the request packet. In the case of the text, the network management alarm is notified to be restored.
  • the switching module includes:
  • a first switching unit configured to: when the forwarding policy is the active/standby policy, the DHCP relay switches the first DHCP service to the second DHCP server of the first DHCP server,
  • the first DHCP server is a primary server
  • the second DHCP server is one or more standby servers of the primary server;
  • a second switching unit configured to: when the forwarding policy is the round robin policy, the DHCP relay rounds the first DHCP server to the next second DHCP server;
  • the third switching unit is configured to send, when the forwarding policy is the standard policy, the DHCP relay to send the request packet to all servers configured in the subnet to which the first DHCP server belongs.
  • the DHCP relay sends a request message of the DHCP client to the first DHCP server according to the forwarding policy, and the DHCP relay does not receive the first DHCP server pair within a preset time period and/or a preset number of forwarding times.
  • the response packet of the request packet the DHCP relay switches the first DHCP server to the second DHCP server according to the forwarding policy, and solves the problem that the user cannot obtain an IP address by using DHCP, thereby improving system maintainability. And error correction.
  • FIG. 1 is a flowchart of a dynamic host configuration protocol DHCP server management method according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a dynamic host configuration protocol DHCP server management apparatus according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a method of using a DHCP server in an access device in accordance with the preferred embodiment.
  • FIG. 1 is a flowchart of a dynamic host configuration protocol DHCP server management method according to an embodiment of the present invention. As shown in FIG. 1 , the process includes The following steps:
  • Step S102 The DHCP relay sends a request message of the DHCP client to the first DHCP server according to the forwarding policy.
  • Step S104 The DHCP relay does not receive the response packet of the first DHCP server to the request packet in the preset time period and/or the preset number of forwarding times, and the DHCP relay sends the response message according to the forwarding policy.
  • a DHCP server switches to the second DHCP server.
  • the DHCP relay sends a request message of the DHCP client to the first DHCP server according to the forwarding policy, and the DHCP relay does not receive the first DHCP server pair within a preset time period and/or a preset number of forwarding times.
  • the response packet of the request packet the DHCP relay switches the first DHCP server to the second DHCP server according to the forwarding policy, and solves the problem that the user cannot obtain an IP address by using DHCP, thereby improving system maintainability. And error correction.
  • the forwarding policy includes at least one of the following:
  • a round robin policy for transmitting the request message to the configured server in a round robin
  • the first DHCP server is in the preset time period and/or the preset number of forwarding times.
  • the alarm information is sent to the network management, and the alarm information indicates that the first DHCP server is unavailable.
  • the DHCP relay continues to send the DHCP client the request packet to the first DHCP server according to the forwarding policy, and notifies the network management alarm when receiving the response packet of the first DHCP server to the request packet. restore.
  • the alarm information includes The network IP address of the first DHCP server
  • the alarm information includes the identity identification ID information of the group to which the first DHCP server belongs.
  • the DHCP relay can switch the first DHCP server to the second DHCP server according to the forwarding policy.
  • the method includes the following methods:
  • the DHCP relay switches the primary server of the first DHCP server to the standby server of the first DHCP server;
  • the DHCP relay rotates the first DHCP server to the next second DHCP server;
  • the DHCP relay sends the request packet to all servers configured in the subnet to which the first DHCP server belongs.
  • the method includes:
  • the DHCP relay configures a reactivation time of the first DHCP server, and when the reactivation time, the DHCP relay confirms that the first DHCP server is available;
  • the DHCP relay switches the first DHCP service to the second DHCP server of the first DHCP server, where the first DHCP server is a primary server, and the first The DHCP server is one or more standby servers of the primary server;
  • the DHCP relay polls the second DHCP server to the first DHCP server;
  • the DHCP relay sends the request packet to all servers configured in the subnet to which the first DHCP server belongs.
  • a dynamic host configuration protocol DHCP server management device is also provided, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again.
  • the term “module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 2 is a structural block diagram of a dynamic host configuration protocol DHCP server management apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes
  • the sending module 22 is configured to send, by the DHCP relay, a request message of the DHCP client to the first DHCP server according to the forwarding policy;
  • the switching module 24 is configured to receive, in the preset time period and/or the preset number of forwarding times, the DHCP relay does not receive the response packet of the first DHCP server to the request packet, and the DHCP relay according to the forwarding policy The first DHCP service Switch to the second DHCP server.
  • the DHCP relay agent sends a request message of the DHCP client to the first DHCP server according to the forwarding policy, and the DHCP relay does not receive the first DHCP server pair within a preset time period and/or a preset number of forwarding times.
  • the response packet of the request packet the DHCP relay switches the first DHCP server to the second DHCP server according to the forwarding policy, and solves the problem that the user cannot obtain an IP address by using DHCP, thereby improving system maintainability. And error correction.
  • the forwarding policy includes at least one of the following:
  • a round robin policy for transmitting the request message to the configured server in a round robin
  • the device further includes:
  • the alarm module is configured to send the alarm information to the network management unit, where the alarm information indicates that the first DHCP server is unavailable.
  • the device further includes: an alarm recovery module, configured to: the DHCP relay continues to send the DHCP client the request message to the first DHCP server according to the forwarding policy, and receives the first DHCP server If the response packet of the packet is requested, the network management alarm is notified to be restored.
  • an alarm recovery module configured to: the DHCP relay continues to send the DHCP client the request message to the first DHCP server according to the forwarding policy, and receives the first DHCP server If the response packet of the packet is requested, the network management alarm is notified to be restored.
  • the switching module 24 includes:
  • a first switching unit configured to: when the forwarding policy is the active/standby policy, the DHCP relay switches the first DHCP service to the second DHCP server of the first DHCP server, where the first DHCP
  • the server is a primary server, and the second DHCP server is one or more standby servers of the primary server;
  • a second switching unit configured to: when the forwarding policy is the round robin policy, the DHCP relay rounds the first DHCP server to the next second DHCP server;
  • the third switching unit is configured to send the request message to all servers configured in the subnet to which the first DHCP server belongs when the forwarding policy is the standard policy.
  • the access device is enabled with the DHCP relay
  • the device maintenance personnel can be quickly notified by means of the alarm, and the forwarding policy of the DHCP server can be used according to the system. Quickly switch to other available DHCP servers, improving system maintainability and user satisfaction.
  • FIG. 3 is a flowchart of a method for using a DHCP server in an access device according to the preferred embodiment. As shown in FIG. 3, the method includes the following steps:
  • Step S302 The DHCP relay sends a DHCP client request message to the DHCP server according to the forwarding policy.
  • Step S304 The DHCP relay forwards the request packet of the client multiple times, and does not receive the response message of the DHCP server within a certain period of time, and generates an alarm to the network management system, prompting that the current server is unavailable, and configuring the reactivation time of the server;
  • Step S306 the DHCP relay switches to an available server according to the forwarding policy.
  • Step S308 after the revival time of the DHCP server is unavailable, the DHCP relay switches to the server according to the forwarding policy;
  • Step S310 After the DHCP server that generates the alarm responds to the request message sent by the DHCP relay, the alarm is restored.
  • the forwarding policy is a policy for how to use the DHCP service, and the method includes:
  • Active/standby policy Request packets are always sent to the primary server unless the primary server is unavailable.
  • Round-robin strategy request message round-robin to be sent to the configured server
  • the DHCP relay forwards the request packet of the client multiple times, and does not receive the response message of the DHCP server within a certain period of time, wherein the number and time can be matched, and the second step is The resurrection time can also be configured;
  • the alarm information sent by the DHCP relay in the second step is different according to the forwarding policy information, and the specific information is as follows:
  • the alarm information includes the IP address of the unavailable server.
  • the alarm information includes the group ID information of the server.
  • step S306 the policy of switching to an available server is as follows:
  • Active/standby policy When the primary server is unavailable, switch to the available standby server.
  • Round robin strategy If the server that is circulated is not available, the next available server is used;
  • Standard policy Request packets are sent to all servers configured in the subnet. If all servers are unavailable, they are still sent to all servers.
  • the unavailable server has a resurrection time.
  • the DHCP relay considers that the server is available, and can send a request message to the server according to the forwarding policy.
  • the specific implementation is as follows:
  • Active/standby policy If the primary server is available, the request packet is switched to the primary server.
  • step S310 when the DHCP relay sends the request packet to the DHCP server that has not responded again, if the response is received at this time, the network management alarm is notified to be restored;
  • the DHCP relay determines which servers are available and which servers are unavailable. It generates alarms for servers that are unavailable, and notifies the device administrator which server may have problems. You can find out the problem and solve the problem in time. And can switch to an available server. After the unavailable server is restored, an alarm recovery is generated, which improves the maintainability and error correction of the system. At the same time, the user's satisfaction is improved.
  • the preferred embodiment is used to implement a method for implementing a DHCP server in an access device, which improves the maintainability and error correction of the system. At the same time, the user's satisfaction is improved.
  • step S302 the DHCP relay sends a DHCP client request message to the DHCP server according to the forwarding policy.
  • the DHCP relay forwards the request packet sent by the DHCP client to the DHCP server, and forwards the DHCP server response packet to the DHCP client.
  • the forwarding policy and server address can be configured through the NMS operation interface.
  • Step S304 the DHCP relay forwards the request message of the client multiple times, and does not receive the response message of the DHCP server within a certain period of time, sends an alarm to the network management system, prompts that the current server is unavailable, and configures the resurrection time of the unavailable server;
  • the DHCP client After receiving a request packet for a period of time, the DHCP client does not receive the response packet from the DHCP server and resends the request packet.
  • the DHCP relay receives the request packet sent by the DHCP client to the current server. If the number of times exceeds the configured number of times and the configured time has expired, the server is considered unavailable. The alarm is sent to the NMS to indicate that the current server is unavailable. The unavailable server is not always unavailable, and the server is considered available again after the resurrection time.
  • DHCP relay uses available servers according to forwarding policies
  • Step S306 the DHCP relay switches to an available server according to the forwarding policy.
  • the DHCP relay will send it to the next standby server. If the standby server behaves the same as the primary server. The standby server is also marked as unavailable. The next request message sent by the client will be sent to the next standby server of the standby server. If there is no next standby server, the primary server will be directly awake and sent to If the current forwarding policy of the DHCP relay is a round robin policy, the DHCP relay sends a request message of the DHCP client in a round robin manner. If all the servers are unavailable, the first configured server is woken up; if the current forwarding policy is used As a standard policy, it is sent to all servers every time.
  • Step S308 after the revival time of the DHCP server is unavailable, the DHCP relay switches to the server according to the forwarding policy;
  • the forwarding policy refers to step S306.
  • Step S310 After the DHCP server that generates the alarm responds to the request packet sent by the DHCP relay, the alarm is restored.
  • the DHCP relay module After the DHCP server is unavailable, the DHCP relay module sends an alarm to the NMS. The network maintenance personnel will troubleshoot which server may be faulty. It is a problem with the link, or the server itself has problems. If the request packet sent by the DHCP relay to this server receives a timely response, the system alarm is restored. Inform the network maintenance personnel that the current server has been restored to normal use.
  • the switch can be quickly switched.
  • the maintainability and error correction of the system can be greatly improved. At the same time, it improves user satisfaction and meets the needs of operators.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the above method steps:
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor performs the method steps of the foregoing embodiments according to the stored program code in the storage medium.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the DHCP relay sends a request message of the DHCP client to the first DHCP server according to the forwarding policy, and the DHCP relay does not receive the preset time period and/or the preset number of forwarding times.
  • the DHCP relay agent switches the first DHCP server to the second DHCP server according to the forwarding policy, and solves the problem that the user cannot obtain an IP address by using DHCP. Improve the maintainability and error correction of the system.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé et un appareil de gestion de serveur de protocole de configuration d'hôte dynamique (DHCP). Dans le procédé, un relais DHCP envoie un paquet de requête d'un client DHCP à un premier serveur DHCP selon une politique de transfert ; dans une période de temps préétablie et/ou dans le nombre préétabli de transferts, si le relais DHCP n'a pas reçu un paquet de réponse du paquet de requête à partir du premier serveur DHCP, le relais DHCP réalise une commutation du premier serveur DHCP à un second serveur DHCP selon la politique de transfert ; et dans la période de temps préétablie et/ou dans le nombre préétabli de transferts, si le relais DHCP n'a pas reçu le paquet de réponse du paquet de requête à partir du premier serveur DHCP, le relais DHCP envoie des informations d'alarme à un système de gestion de réseau, les informations d'alarme indiquant que le premier serveur DHCP n'est pas disponible. Par conséquent, le problème d'échec d'acquisition d'une adresse IP par utilisation du DHCP est résolu, et la maintenabilité et les performances de correction d'erreur d'un système sont améliorées.
PCT/CN2016/079088 2015-06-30 2016-04-12 Procédé et appareil de gestion de serveur de protocole de configuration d'hôte dynamique (dhcp) WO2017000625A1 (fr)

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