CN108307002A - A kind of DHCP message processing method and processing device - Google Patents
A kind of DHCP message processing method and processing device Download PDFInfo
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- CN108307002A CN108307002A CN201810438541.0A CN201810438541A CN108307002A CN 108307002 A CN108307002 A CN 108307002A CN 201810438541 A CN201810438541 A CN 201810438541A CN 108307002 A CN108307002 A CN 108307002A
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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]
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0876—Aspects of the degree of configuration automation
- H04L41/0886—Fully automatic configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/562—Brokering proxy services
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Automation & Control Theory (AREA)
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Abstract
The invention discloses a kind of dynamic host configuration protocol DHCP message processing method and device, the method includes:DHCP proxy node is received from business network and is asked, and the request for virtual machine or physical machine for distributing IP address;The DHCP proxy node obtains IP address according to the request in managing network from DHCP service node;The DHCP proxy node sends the IP address obtained to the virtual machine or physical machine.This method by disposing DHCP proxy node in the data center, the DHCP proxy node has the free forwarding capability between business network and management network by message or message, to realize automatically configuring for IP address, save management cost, and the operation of administrator's manual configuration IP address is also avoided, joint efficiency is improved.
Description
Technical field
This application involves network communication technology field more particularly to a kind of DHCP message processing method and processing devices.
Background technology
In data center's building process, it will usually which the O&M pipe of at least one independent service area and a concentration is set
Manage area.Wherein, service area is for disposing various types of operation systems, and operation management area is for disposing various software and hardware systems
Management and operation platform, and be isolated with business network.
Specifically, it is deployed with various management nodes in operation management area, is deployed with for all kinds of industry in each service area
The virtual machine or physical machine of business system.Wherein, each management node being deployed in operation management area is used for as service area
Virtual machine or physical machine provide management and operation platform.
To realize address network interconnection agreement (Internet Protocol, IP) of virtual machine or physical machine in service area
Unified management, would commonly be used for distribution IP address dynamic host configuration protocol (Dynamic Host Configuration
Protocol, DHCP) service node is deployed in operation management area.When administrator provides a virtual machine or object in some service area
When reason machine, virtual machine or physical machine need to send DHCP request by business network to obtain IP address.The DHCP is a kind of
Double layer network agreement, the business network of service area and two floor of management network in operation management area are obstructed, cause dhcp broadcast cannot
It is sent to the DHCP service node in operation management area from the virtual machine or physical machine of service area, and then leads to virtual machine or physical machine
IP address can not be automatically configured using dhcp broadcast.
Invention content
The application is by disposing a DHCP proxy node so that the DHCP proxy node can will be obtained from business network
The dhcp broadcast taken, by managing forwarded to the DHCP service node in management node, to solve because of service network
Virtual machine or physical machine caused by the isolation of network and management network cannot achieve the problem of IP address automatically configures.
Specifically, this application discloses following technical schemes:
In a first aspect, this application provides a kind of dynamic host configuration protocol DHCP message processing method, the method packet
It includes:DHCP proxy node is received from business network and is asked, and the request is used to indicate distributes IP address for virtual machine or physical machine;
The DHCP proxy node sends the request to DHCP service node, is taken from DHCP according to the request in managing network
Business node obtains IP address;And send the IP address to the virtual machine or physical machine.
Optionally, the request includes the DHCP Discover broadcasting packets in DHCP protocol.
Optionally, the IP address can be carried by the DHCP Offer messages in DHCP protocol.
Present aspect may be implemented the message between management network and business network by configuration DHCP agent node and forward,
And then it is virtual machine or physical machine automatic IP address allocation.
With reference to first aspect, in a kind of realization method of first aspect, the DHCP proxy node connects from business network
Receiving request includes:The DHCP proxy node receives the request from the virtual machine or physical machine by the first network interface card,
First network interface card is for accessing the business network, to realize request the sending and receiving in business network.
With reference to first aspect, in another realization method of first aspect, the DHCP proxy node is in management network
It is middle that IP address is obtained from DHCP service node according to the request, including:The DHCP proxy node is received by the second network interface card
The DHCP service node is according to the IP address of the request distribution, and second network interface card is for accessing the management net
Network, to realize the IP address sending and receiving in managing network.
With reference to first aspect, in another realization method of first aspect, first network interface card is located at second net
On host where blocking, the DHCP proxy node deployment is in the host where second network interface card.
Second aspect, present invention also provides a kind of DHCP proxy nodes, including receiving module and sending module, wherein
The receiving module is asked for being received from business network, and is asked from DHCP service section according to described in managing network
Point obtains IP address, and the request is used to indicate distributes IP address for virtual machine or physical machine;The sending module is used for institute
It states virtual machine or physical machine sends the IP address.
In conjunction with second aspect, in a kind of realization method of second aspect, the receiving module is specifically used for passing through first
Network interface card receives the request from the virtual machine or physical machine, and first network interface card is for accessing the business network.
In conjunction with second aspect, in another realization method of second aspect, the receiving module is specifically used for by the
Two network interface cards receive the DHCP service node according to the IP address of the request distribution, and second network interface card is for accessing institute
State management network.
In conjunction with second aspect, in another realization method of second aspect, first network interface card is located at second net
On host where blocking, the DHCP proxy node deployment is in the host where second network interface card.
The third aspect, present invention also provides a kind of data center, the data center includes at least one computing device,
Each computing device includes processor and memory, and at least one processor is executed for controlling DHCP proxy section
Point, DHCP service node and virtual machine,
The DHCP proxy node, for from business network receive ask, in manage network according to it is described ask from
DHCP service node obtains IP address, and sends the IP address to virtual machine or physical machine, wherein the request is for referring to
It is shown as the virtual machine or physical machine distribution IP address.
In conjunction with the third aspect, in a kind of realization method of the third aspect, the processor is specifically used for described in control
DHCP proxy node receives the request from the virtual machine or physical machine by the first network interface card, and first network interface card is used for
Access the business network.
In conjunction with the third aspect, in another realization method of the third aspect, the processor is specifically used for described in control
DHCP proxy node receives the IP address of the DHCP service node according to the request distribution by the second network interface card, described
Second network interface card is for accessing the management network.
In conjunction with the third aspect, in another realization method of the third aspect, first network interface card is located at second net
On host where blocking, the DHCP proxy node deployment is in the host where second network interface card.
Fourth aspect, present invention also provides a kind of computer storage media, which can be stored with finger
It enables, when instruction execution can be realized described in the various realization methods in first aspect and first aspect provided by the present application
Some or all of DHCP message processing method step.
Wherein, the storage medium includes the memory in the computing device in the third aspect.
5th aspect, present invention also provides a kind of computer program products including instruction, when described instruction is calculating
When being run on machine, the computer executes the DHCP message processing method described in above-mentioned various aspects.
Method provided by the present application, disposes DHCP proxy node in the data center, which has and will disappear
The free forwarding capability of breath or message between business network and management network, for example business network is realized by the first network interface card
Information receiving and transmitting realizes the information receiving and transmitting of management network by the second network interface card, to solve in cloud platform, because of business network and
It manages virtual machine or physical machine caused by the isolation of network and cannot achieve the problem of IP address automatically configures, this method realizes IP
Address automatically configures, and saves management cost, and also avoid the operation of administrator's manual configuration IP address, improves connection effect
Rate.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of structural schematic diagram of data center provided by the present application;
Fig. 2 is a kind of flow chart of DHCP message processing method provided by the present application;
Fig. 3 is a kind of schematic diagram of DHCP leases process provided by the present application;
Fig. 4 is the flow chart of another DHCP message processing method provided by the present application;
Fig. 5 is a kind of schematic diagram of DHCP message forwarding provided by the present application;
Fig. 6 is a kind of structural schematic diagram of DHCP proxy node provided by the present application;
Fig. 7 is a kind of structural schematic diagram of computing device provided by the present application.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution in the embodiment of the present application, and keep the application real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, below in conjunction with the accompanying drawings to the technology in the embodiment of the present application
Scheme is described in further detail.
First, under the technology scene and system of the application each functional entity and technical term be introduced and
Explanation.
As shown in Figure 1, being a kind of data center's structural schematic diagram provided by the embodiments of the present application, which can be
A kind of cloud management platform or cloud data center, wherein at least one host of data center deployment (i.e. computing device), at least
Virtual machine or management node can be disposed on the either host of one host, while the either host of at least one host can also
Without virtualization, it is supplied to user as physical machine, provides service to the user.Illustratively, a master is delineated in Fig. 1
In addition to this case where disposing virtual machine and management node simultaneously on machine can only dispose virtual machine, not dispose on a host
Management node, the embodiment of the present application are without limitation.
Data center as shown in Figure 1, each management node and the region of the relevant node composition of management node can claim
For operation management area, the network formed is management network;It will be between all business and the relevant virtual machine of business and physical machine
The region of composition is properly termed as service area, and the network formed is business network.In operation management area, management node is for virtual
The establishment and configuration of machine and the configuration of physical machine, the management node include calculate node, network node.
Optionally, the management node in the application may include DHCP service node, for dividing for virtual machine or physical machine
With IP address and other parameters.The management node can not also include the DHCP service node, and the application refuses this
Limitation.
In addition, service area can also include only virtual machine, i.e., only service is provided to the user using virtual machine, the application is implemented
Example is without limitation.
Host and physical machine pass through the first network interface card access business network where virtual machine so that each virtual machine or physical machine
It is communicated by the other virtual machines of business network or physical machine.Meanwhile host and physical machine are connect by the second network interface card where virtual machine
Enter to manage network so that management node is by managing network configuration physical machine, establishment and configuration virtual machine.Configured on host
One network interface card and the second network interface card realize business network and manage the isolation of network.The isolation refers to the management node managed in network
Operation can only be created and configured to virtual machine, business cannot be intervened.Such as the virtual machine in business network exists
When carry out business transmission, management node cannot obtain the data of business transmission.
As shown in Figure 1, in service area, the intercommunication of each virtual machine, and business network is established by the first network interface card,
Such as it is linked into respectively by respective first network interface card in the virtual machine 1 in host 1, the virtual machine 2 in host 2 and physical machine 3
Business network, and different business functions is realized in the business network.
DHCP proxy node is also deployed on host where virtual machine.The DHCP proxy node be host on one into
Journey, can on host the first network interface card and the realization of the second network interface card monitor respectively, to virtual machine or physics with business network
Management node communication in machine and management network.The DHCP proxy node comes from DHCP service by what is listened to from the second network interface card
The message of node is forwarded to the first network interface card, the message is forwarded to virtual machine or physical machine further through the first network interface card, to solve
Virtual machine or physical machine caused by the isolation of business network and management network cannot achieve the problem of IP address automatically configures.
DHCP proxy node only monitors DHCP message, other packet loss, to not influence the isolation of business network and virtual network.
It further, can be by the DHCP proxy node in order to avoid mutually being interfered with the DHCP request of management network internal
Listening port is adjusted to 67,68 ports of non-protogenous DHCP protocol formulation.In Fig. 1, illustratively draws out and be deployed in virtual machine
The DHCP proxy node of place host, further, since physical machine equally has the first network interface card and the second network interface card, so DHCP
Agent node can also be deployed in physical machine, and the application is without limitation.
Optionally, technical solution provided by the present application can be applied to OpenStack cloud platforms, wherein OpenStack is
One free open source software cloud computing platform.OpenStack network services are benchmark services, are usually directed to several programs and exist
Deployment in multiple network nodes.The main program of OpenStack network services is so-called Neutron servers, described
Neutron servers are a kind of Python background programs, by OpenStack network application programming interface (application
Programming interface, API) be supplied to the tenant of network service, and by tenant request pass to a series of plug-in units into
Row processing.
Neutron servers (being known as Quantum originally) are run on processor node, to service networking API and its open up
Exhibition.Neutron servers can be used for executing the IP addressing of network model and each port.Neutron servers are usual
Including at least one Neutron plug-in units.Usual Neutron plug-in units are run in calculate node, to manage and configure local virtual
Interchanger.
Optionally, in the present embodiment, the function of management node can be by OpenStack cloud platforms
Neutron servers are realized, or can also realize that the present embodiment is not limited this by other computer programs.
DHCP protocol is used to distribute IP address and some TCP/IP configuration informations or network configuration parameters to the network equipment.
DHCP uses client/server communication pattern, proposes that configuration application, server return to client point by user end to server
The corresponding configuration information such as the IP address matched, to realize the dynamic configuration of the information such as IP address.DHCP improves safe and reliable and simple
Single TCP/IP network settings, avoid the conflict of address in TCP/IP networks, while being greatly reduced management IP address and having set
The burden set.
Wherein, in each embodiment of the application, the client includes the virtual machine or physical machine of service area, the application couple
This is not limited.
In the case of in order to realize the isolation in business network and management network, service node to virtual machine or physical machine from
Dynamic distribution IP address, present embodiments provides a kind of DHCP message processing method, and this method is applied to data center, the data
Center includes at least one computing device, and each computing device includes processor and memory, at least one computing device
For running DHCP proxy node, DHCP service node and virtual machine,
Wherein, the DHCP proxy node deployment is on the virtual machine of service area or physical machine, the host where virtual machine
Including two network interface cards, the first network interface card and the second network interface card, first network interface card are used for access business network, realize disappearing for business network
Breath transmitting-receiving;Second network interface card is used for access-in management network, realizes that the information receiving and transmitting of management network, the DHCP proxy node are used
In the process for monitoring the first network interface card and the second network interface card.
Fig. 2 is participated in, the described method comprises the following steps:
Step 201:DHCP proxy node is received from business network and is asked, and the request is used to indicate as virtual machine or physics
Machine distributes IP address;
Specifically, the DHCP proxy node is received by the first network interface card come the request of self virtualizing machine or physical machine,
First network interface card is for accessing the business network.
Wherein, the request includes DHCP Discover broadcasting packets.
Step 202:DHCP proxy node sends the request to DHCP service node, in managing network according to
Request obtains IP address from DHCP service node;
Specifically, the DHCP proxy node sends the request to DHCP service node by the second network interface card, and
The DHCP proxy node receives the IP address of the DHCP service node according to the request distribution by the second network interface card,
Second network interface card is for accessing the management network.
The DHCP service node has been set up communication connection with DHCP proxy node before obtaining request.
Step 203:DHCP proxy node sends the IP address to the virtual machine or physical machine.
Specifically, the IP address is sent to virtual machine or physical machine by the DHCP proxy node by the first network interface card.
Wherein, first network interface card is located on the host where second network interface card, the DHCP proxy node deployment in
Host where second network interface card.
Optionally, the IP address can be sent to virtual machine in such a way that DHCP Offer messages carry.
In the present embodiment, DHCP proxy node is obtained virtual by the first network interface card access business network from business network
Then the request that machine is sent gives the request to DHCP service node, wherein the DHCP proxy node by managing forwarded
By the second network interface card access-in management network, realize request message from business network to the forwarding management network.
Similarly, after DHCP service node is received from the request that DHCP proxy node forwards, IP address is distributed,
And be sent to DHCP proxy node by managing network, the DHCP proxy node by the second network interface card receive the IP address it
Afterwards, then by the IP address conversion to business network, and the IP address is transmitted to by the virtual machine or physics by the first network interface card
Machine, to realize IP address from management network to the forwarding business network.
Method provided in this embodiment disposes DHCP proxy node in the data center, which has will
The free forwarding capability of message or message between business network and management network, for example business network is realized by the first network interface card
Information receiving and transmitting, by the second network interface card realize management network information receiving and transmitting, to solve in cloud platform, because of business network
Virtual machine or physical machine caused by isolation with management network cannot achieve the problem of IP address automatically configures.
This method realizes automatically configuring for IP address, saves management cost, and also avoid administrator's manual configuration
The operation of IP address improves IP address binding efficiency.
In addition, the physical machine or virtual machine of service area from DHCP service node (i.e. DHCP Server) in addition to can obtain
It obtains outside IP address, the information such as subnet mask, default gateway address, dns server address can also be obtained, this above process claims
For DHCP lease processes.Because when virtual machine or physical machine receive the IP address provided, DHCP service node will be IP
Address lease is to the one specified time of virtual machine or physical machine.
Further, it can be divided into the DHCP leases processes profiles 4 steps, be respectively referring to Fig. 3:Virtual machine or
--- server determines person's physical machine IP address requesting for server response --- virtual machine or physical machine select IP address ---
Lease.
It is detailed to a kind of DHCP message processing method progress provided in this embodiment based on DHCP leases process shown in Fig. 3
Thin introduction, this method can be applied to data center shown in FIG. 1.
The data center includes:It is deployed in the management node in operation management area, at least one DHCP service node,
DHCP proxy node and virtual machine or physical machine.
Specifically, as shown in figure 4, the described method comprises the following steps:
Step 1:User (administrator or tenant) creates a network, and management node receives network from the user
The request of establishment.
Step 2:Management node is the network that newly creates one DHCP service section of establishment/startup in operation management area
Point, the IP address which can serve the network are distributed automatically, and the VM/PM for example, asked provides IP address.
Step 3:Management node obtains the IP address information of the DHCP service node newly created.
Step 4:Management node is that the PM/VM creates a DHCP proxy node in the network newly created.
Specifically, if service area does not have DHCP proxy node, a physics of the management node in the service area
A DHCP proxy node is created on host where the virtual machine of machine or the service area.DHCP proxy node can also be with active and standby
Or the form of cluster is deployed in the multiple main frames of service area, the present embodiment is without limitation.
Step 5:Management node configuration DHCP service node, by the IP address of the DHCP service node newly created, end
The information such as mouth are sent to the DHCP proxy node newly created in step 4 or the original node of the service area, so that the DHCP generations
Reason node establishes communication connection using the IP address that the DHCP service node distributes.
Optionally, the method further includes:
Step 6:After DHCP proxy node receives the IP address of the DHCP service node, built with DHCP service node
Vertical communication connection, and the connectivity of itself and DHCP service node is tested, if network connection is obstructed, flow terminates, Yi Jixiang
Data center sends the warning information of error, so that operation maintenance personnel can be with intervention diagnosis fault point.
In the present embodiment, the DHCP service node and DHCP generations that data center is virtual machine or physical machine selection service are utilized
Node is managed, and the communication link between DHCP service node and DHCP proxy node is established by the IP address of DHCP service node
It connects so that DHCP proxy node is after obtaining the request from VM/PM, so that it may the request is automatically forwarded to DHCP service
Node, and receive the IP address of the DHCP service node feeding back, to automatically set up DHCP service node and VM/PM
Connection relation to realize the automatic distribution of IP address, while avoiding modification message content and filling corresponding to DHCP proxy section
DHCP service node IP address.
Step 7:DHCP proxy node starts dhcp broadcast in business network and monitors, and owns for monitoring in its location
Client, such as virtual machine or physical machine, the request message of broadcast.
Step 8:When user provides a virtual machine, either the IP address of physical machine or virtual machine or physical machine needs to brush
It when new, then needs to obtain and bind an IP address, i.e., to Web broadcast DHCP Discover request messages.
Specifically, virtual machine or physical machine broadcast a DHCP Discover packet with IP address requesting in data center, this
Process is also referred to as DHCP Discover.Optionally, the source IP address of the DHCP Discover packets is 0.0.0.0;Destination IP
Address is 255.255.255.255, which can also include virtual machine or the MAC Address and meter of physical machine
Calculation machine name, so that it is the request message sent by which virtual machine or physical machine that DHCP service node, which can determine,.
Step 9:After DHCP proxy node receives DHCP Discover request messages, the message is copied in case forwarding, by institute
It states message and is converted to management network from business network, and do not change message content, be also not filled with DHCP relay fields.
Step 10:DHCP proxy node is sent the DHCP Discover request messages of the copy by managing network
Give DHCP service node.
Optionally, the request message is sent to by the DHCP proxy node by managing network in the form of unicast
DHCP service node.
Step 11:DHCP service node receives the DHCP Discover request messages sent from DHCP proxy node, so
The request message is handled afterwards, specifically, is provided according to the information secondary IP address for including in DHCP Discover request messages
Choose suitable IP address in the pond of source, and with dhcp response message, for example, DHCP Offer messages mode feed back to it is described
DHCP proxy node.
Specifically, when DHCP service node receives the information of client request IP address, just in the IP address of oneself
Search whether that legal IP address is supplied to client in library, if so, this IP address is just done subscript by DHCP service node
Note, then unicast send a DHCP Offer packet and give DHCP proxy node (this process is also known as DHCP Offer).
Step 12:DHCP proxy node receives the dhcp response message from DHCP service node by business network
After (such as DHCP Offer messages), by the message from management network transitions to business network.
Step 13:The DHCP Offer messages are sent to physical machine or virtual by DHCP proxy node by business network
Machine.
Step 14:The physical machine or virtual machine extract IP address from DHCP Offer messages, and are confirming the IP
Address do not have it is occupied in the case of send DHCP response messages (such as DHCP Requst messages) arrive DHCP proxy node;Such as
The fruit IP address is occupied, then needs to return to the transmission that step 8 restarts DHCP request message.
Specifically, physical machine or virtual machine select IP address from the first DHCP Offer message received, and generate
DHCP response messages, the DHCP response messages indicate that the IP address in the dhcp response message is available.Optionally, described
DHCP response messages are DHCP Request messages, this process is also referred to as DHCP Request.
Step 15:DHCP proxy node receives the DHCP Request reports from physical machine or virtual machine by business network
Text copies the message in case forwarding, and do not change the message content, is also not filled with DHCP relay fields.
Step 16:DHCP Request messages are sent to DHCP service node by DHCP proxy node by managing network.
Step 17:DHCP service node receives the DHCP Request messages from DHCP proxy node, and passes through management
Network sends DHCP ACK messages to the DHCP proxy node.
Specifically, the final step during DHCP leases is that server confirms IP leases, also referred to as DHCP ACK.DHCP
Service node feeds back to object after receiving DHCP Request in the form of DHCP ACK (DHCP Acknowledge) message
Reason machine or virtual machine indicate successfully to confirm, include the effective lease and other possible configurations of IP address in the DHCP ACK messages
Information.When physical machine or virtual machine receive DHCP ACK, it is just configured with IP address, completes the initialization of TCP/IP,
So as to be communicated on TCP/IP networks.
In addition, if physical machine or virtual machine receive the IP address of DHCP service node distribution, DHCP is had sent
The IP address can be marked and retained by Request messages, then the DHCP service node for distributing the IP address so that the IP address is not
Other dhcp clients can be available to use.
Step 18:DHCP proxy node receives the DHCP ACK messages from DHCP service node, place by managing network
The DHCP ACK messages are transferred to business network after reason.
Step 19:The DHCP ACK messages are sent to client by DHCP proxy node by business network.
Step 20:After physical machine or virtual machine receive the DHCP ACK messages, the IP address of request is bound.
Flow terminates.
Referring to Fig. 5, for a kind of structural schematic diagram of DHCP proxy node forwarding DHCP message provided in this embodiment.
It should be noted that DHCP Discover broadcasting packets, DHCP Offer messages described in the present embodiment,
DHCPRequest messages and DHCP ACK messages are the message in DHCP protocol, and all have specific definition, specifically
Ground is defined as follows the effect of each message in DHCP protocol:
DHCP Discover messages/packet:Dhcp client (client) is when needing to obtain IP address, to local network
Broadcast the packet of this type.
DHCP Offer messages/packet:DHCP service node (server) replys the DHCP that dhcp client is sent out
Discover messages, and DHCP service node is contained in DHCP Offer packets will be supplied to some configurations of client to join
Number, such as IP address.
DHCP Request messages/packet:Dhcp client is sent to the packet of Dynamic Host Configuration Protocol server in a case where:
(a) configuration information provided in the DHCP Offer that the specific service node of client request one is sent, simultaneously
The DHCP Offer packets of other Servers-alls of the refusal of hint.
(b) client distributes to the correctness of the configuration information of oneself before sometimes confirming, such as client
After operating system is restarted, after of short duration circuit physical fault.
(c) client continues the rental period for the specific IP address that it has been obtained.
DHCP ACK messages:The DHCP Request packets or DHCP that DHCP service node reverts back dhcp client is sent
Inform packets, the inside contain the configuration information that DHCP service node distributes to client.
Technical solution provided by the present application disposes DHCP proxy node on host so that the DHCP proxy node can be with
By the dhcp broadcast obtained from business network by managing forwarded to DHCP service node, to solve because of business network
Virtual machine or physical machine caused by isolation with management network cannot achieve the problem of IP address automatically configures.
In addition, this method is realized using DHCP service node carries out centralized distribution to the IP address that virtual machine is asked, make
Cloud computing platform or virtual platform meet the requirement at current data center, the requirement that operation management is concentrated so that
Management node can be avoided with entire data center under the overall leadership and disposed a set of management platform in each service area, be saved
Management cost, and then lease efficiency is improved, and by IP address automatic configuration but also platform administrator avoids hand
The pressure of work operation.
It is the structural schematic diagram of the application DHCP proxy node, the DHCP proxy node deployment is in server referring to Fig. 6
Or on calculate node or computing device, for executing the corresponding DHCP message processing methods of Fig. 2 or Fig. 4.
As shown in fig. 6, the DHCP proxy node includes:Receiving module 601, processing module 602 and sending module 603, this
Outside, which can also include other function modules or component, such as memory module etc..
Wherein, receiving module 601 are asked for being received from business network, and the request is DHCP Discover broadcast reports
Text.
Processing module 602, for the request to be transformed into management network from business network.
Sending module 603, for the request to be sent to DHCP service node in the form of unicast.
Receiving module 601 is additionally operable in managing network obtain IP address, institute from DHCP service node according to the request
Request is stated to be used to indicate as virtual machine or physical machine distribution IP address.Wherein, the IP address can be reported by DHCP Offer
The mode of text obtains.
Sending module 603, for sending the IP address to the virtual machine or physical machine.
Optionally, in a kind of concrete implementation mode of the present embodiment, the receiving module 601, specifically for passing through
First network interface card receives the request for coming self virtualizing machine or physical machine, and first network interface card is for accessing the business network.
Optionally, in another concrete implementation mode of the present embodiment, the receiving module 601 is specifically used for logical
It crosses the second network interface card and receives the DHCP service node according to the IP address of the request distribution, second network interface card is for connecing
Enter the management network.
Wherein, first network interface card is located on the host where second network interface card, the DHCP proxy node deployment in
Host where second network interface card.
Optionally, in a kind of concrete implementation mode of the present embodiment, processing module 602, being specifically used for will be described
DHCP Offer messages are from management network transitions to business network;Sending module 603 is specifically used for passing through the first network interface card by DHCP
Offer messages are sent to virtual machine or physical machine.
Optionally, in a kind of concrete implementation mode of the present embodiment, receiving module 601 is additionally operable to pass through service network
Network obtains the DHCP Request messages from the virtual machine or physical machine, and the DHCP Request messages indicate DHCP
IP address in Offer messages is available;Processing module 602 is additionally operable to the DHCP Request messages from the service network
Network is transferred to the management network;Sending module 603 is additionally operable to send the DHCP Request messages by the second network interface card
Give DHCP service node.
Optionally, in another concrete implementation mode of the present embodiment, receiving module 601 is additionally operable to by described
It manages network and receives the DHCP ACK messages from the DHCP service node;Processing module 602 is additionally operable to the DHCP
ACK messages are from the management network transitions to the business network;Sending module 603, being additionally operable to will be described by the first network interface card
DHCPACK messages are sent to the virtual machine or physical machine, so that the virtual machine or physical machine are obtaining the DHCP ACK
The IP address is bound after message.
Optionally, in another concrete implementation mode of the present embodiment, receiving module 601 is additionally operable to obtaining
Before request message, the IP address of the DHCP service node is obtained;Processing module 602, be additionally operable to according to the IP address with
The DHCP service node establishes connection, and tests the connectivity between the DHCP service node.
In addition, the embodiment of the present application also provides a kind of management node, such as it is deployed in OpenStack cloud computing platforms
In Neutron components, the structure of the management node can be identical as DHCP proxy node structure shown in fig. 6, such as
Including:Receiving module, processing module and sending module etc..
The receiving module is used to obtain the request for the network creation for coming self virtualizing machine or physical machine;Processing module is for being
The virtual machine or physical machine create a DHCP service node, and determine a DHCP generation for the virtual machine or physical machine
Manage node, wherein the DHCP service node is for providing IP address, and the DHCP proxy node is for leading to the IP address
It crosses management network and is sent to the virtual machine or physical machine.
Optionally, the sending module is additionally operable to the corresponding IP address of the DHCP service node being sent to DHCP proxy
Node, so that the DHCP proxy node establishes communication connection using the IP address of the DHCP service node.
In addition, the embodiment of the present application also provides a kind of DHCP service node, for realizing the automatic distribution of IP address.
Optionally, the structure of the DHCP service node can be identical as DHCP proxy node structure shown in fig. 6, such as wraps
It includes:Receiving module, processing module and sending module etc..
Specifically, receiving module is for receiving the DHCP request from DHCP proxy node;Processing module is used for according to institute
The IP address that DHCP request determines virtual machine or physical machine is stated, sending module is used to send the IP address by managing network
Give DHCP proxy node.
Optionally, in another concrete implementation mode of the present embodiment, the receiving module is additionally operable to receive and come from
The DHCP Request messages of DHCP proxy node, the DHCP Request messages indicate the DHCP service node distribution
IP address is available;The processing module is additionally operable to generate ACK messages and the ACK messages is sent to DHCP generations by sending module
Manage node.
It should be noted that DHCP proxy node described in each embodiment of the application can also be known as dhcp relay agent,
DHCP forwarding agencies, DHCP relay or DHCP forward node etc. can also be other proxy modules, for realizing in physical machine
Information receiving and transmitting between business network and management network.
Fig. 7 is a kind of structural schematic diagram of computing device provided by the embodiments of the present application, which includes:Network connects
Mouth 701, processor 702 and memory 703.Processor 702 executes the code in memory 703, by network interface 701 come real
Existing DHCP proxy node shown in fig. 6, including the communication between DHCP proxy node and Dynamic Host Configuration Protocol server, virtual machine or physical machine
Transmission.
Further, the processor 702 can be made of integrated circuit (integrated circuit, IC), such as
The IC that can be encapsulated by single is formed, and can also be formed by connecting the encapsulation IC of more identical functions or different function.It lifts
For example, processor can only include CPU, can also be GPU, digital signal processor (digital signal
Processor, DSP) and control chip (such as baseband chip) in transceiver module combination.In the various implementations of the application
In mode, CPU can be single operation core, can also include multioperation core.
The memory 703 may include volatile memory (volatile memory), such as random access memory
(randomaccess memory, RAM);Can also include nonvolatile memory (non-volatile memory), such as
Flash memory (flash memory), hard disk (hard disk drive, HDD) or solid state disk (solid-state
Drive, SSD);The memory can also include the combination of the memory of mentioned kind.
In specific implementation level, present invention also provides a kind of data center, the data center includes at least one meter
Calculate equipment or host, each computing device or host include processor and memory, at least one computing device or
Person's host is for running DHCP proxy node, DHCP service node and virtual machine, to realize the DHCP described in previous embodiment
Message processing method.
Specifically, the DHCP proxy node is used to receive from business network and ask, and is asked according in managing network
It asks and obtains IP address from DHCP service node, and the IP address is sent to virtual machine or physical machine, wherein the request is used
IP address is distributed in being designated as the virtual machine or physical machine.
Optionally, in a kind of concrete implementation mode of the present embodiment, the processor is specifically used for described in control
DHCP proxy node receives the request from the virtual machine by the first network interface card, and first network interface card is described for accessing
Business network.
Optionally, in another concrete implementation mode of the present embodiment, the processor is specifically used for described in control
DHCP proxy node receives the IP address of the DHCP service node according to the request distribution by the second network interface card, described
Second network interface card is for accessing the management network.
Wherein, first network interface card is located on the host where second network interface card, the DHCP proxy node deployment in
Host where second network interface card.
In the specific implementation, the application also provides a kind of computer storage media, wherein the computer storage media can store
Some or all of there is program, which may include when executing in each embodiment of DHCP message processing method provided by the present application
Step.The storage medium can be magnetic disc, CD, ROM or RAM etc..
Wherein, the DHCP proxy node, DHCP service node, virtual machine institute functional can pass through computer journey
Sequence is realized.
In addition, in the present embodiment, a kind of computer program product is also provided, which includes one or more
A computer instruction, such as forwarding instruction etc..When computer loads and executes the computer program, all or part of real estate
Life is according to the flow or function described in the above embodiments of the present application.The computer can be all-purpose computer, special purpose computer,
Computer network or other programmable devices.
Specifically, it can be achieved that following functions when the computer executes the computer program:
DHCP proxy node is received from business network and is asked, and the request is used to indicate distributes IP address for virtual machine;
It manages in network and IP address is obtained from DHCP service node according to the request;And send institute to the virtual machine or physical machine
State IP address.
In addition, specifically realize and include, the DHCP proxy node received from the virtual machine by the first network interface card or
The request of physical machine, first network interface card is for accessing the business network;And the DHCP proxy node passes through
Two network interface cards receive the DHCP service node according to the IP address of the request distribution, and second network interface card is for accessing institute
State management network.
The computer instruction can store in a computer-readable storage medium, or from a computer-readable storage
Medium is transmitted to another computer readable storage medium, for example, the computer instruction can be from a network equipment, calculating
Machine, server or data center are transmitted by wired or wireless way to another equipment, computer or server.
Present invention also provides a kind of terminals, such as user equipment, physical machine or virtual machine, for realizing aforementioned implementation
The methods of the transmission of DHCP request message in example and the transmission of DHCP request messages, ACK messages step.
Specifically, the terminal may include control node, processor and memory, and the control node may include connecing
The components such as receipts machine, transmitter and antenna.The terminal can also include more or fewer components, or combine certain components,
Or different component arrangements, the application is to this without limiting.
Wherein, the control node, for broadcast DHCP request message, such as DHCP Discover broadcasting packets, using
In to server IP address requesting;
The control node is additionally operable to receive the dhcp response message from DHCP proxy node, the dhcp response report
Text can be DHCP Offer messages, and carry IP address in the DHCP Offer messages;The processor is used for from described
IP address is extracted in dhcp response message, and is confirming that it is occupied by the control node that the IP address does not have
It sends DHCP response messages and gives DHCP proxy node;Wherein, the DHCP response messages can be DHCP Requst messages.
Optionally, if the IP address is occupied, terminal needs to send DHCP to DHCP proxy node again
Discover broadcasting packets, so that re-request obtains new IP address.
Optionally, in a kind of concrete implementation mode of the present embodiment, the control node is additionally operable to receive and comes from
The DHCP ACK, the DHCP ACK that DHCP proxy node is sent are DHCP service nodes according to the DHCP Requst messages
It generates and sends, cannot be used again by miscellaneous equipment for marking this to distribute to the IP address of client.
The processor is additionally operable to after receiving the DHCP ACK messages, is bound to the IP address.
In addition, the instruction that has program stored therein in the memory, which can realize above-mentioned client or end when executing
To DHCP, respectively message sends and receives at end, and the methods of bind flow to the IP address of acquisition.Further, institute
It may include volatile memory, such as RAM to state memory;Can also include nonvolatile memory, such as flash
Memory, hard disk HDD or SSD;The memory can also include the combination of the memory of mentioned kind.
The processor can be the combination of CPU or CPU and NP.Processor can further include hardware chip.
Above-mentioned hardware chip can be ASIC, programmable logic device (programmable logic device, PLD) or combinations thereof.
Above-mentioned PLD can be Complex Programmable Logic Devices (complex programmable logic device, CPLD), scene
Programmable gate array (field-programmable gate array, FPGA), Universal Array Logic (generic
Array logic, GAL) or its arbitrary combination.
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present invention substantially or
Say that the part that contributes to existing technology can be expressed in the form of software products, which can deposit
Storage is in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are used so that computer equipment (can be with
Be personal computer, server either network equipment etc.) execute certain part institutes of each embodiment of the present invention or embodiment
The method stated.
The same or similar parts between the embodiments can be referred to each other in this specification.Especially for above-mentioned apparatus
For the embodiment of hardware device, since it is substantially similar to the method embodiment, so description is fairly simple, related place
Referring to the explanation in embodiment of the method.
Invention described above embodiment is not intended to limit the scope of the present invention..
Claims (10)
1. a kind of dynamic host configuration protocol DHCP message processing method, which is characterized in that the method includes:
DHCP proxy node is received from business network and is asked, and the request is used to indicate for virtual machine or physical machine distribution IP
Location;
The DHCP proxy node obtains IP address according to the request in managing network from DHCP service node;
The DHCP proxy node sends the IP address to the virtual machine or physical machine.
2. according to the method described in claim 1, it is characterized in that, the DHCP proxy node receives request bag from business network
It includes:
The DHCP proxy node by the first network interface card receive the request from the virtual machine or physical machine, described first
Network interface card is for accessing the business network.
3. method according to claim 1 or 2, which is characterized in that DHCP proxy node basis in managing network
The request obtains IP address from DHCP service node, including:
The DHCP proxy node receives the IP of the DHCP service node according to the request distribution by the second network interface card
Address, second network interface card is for accessing the management network.
4. according to the method described in claim 3, it is characterized in that, first network interface card is located at the master where second network interface card
On machine, the DHCP proxy node deployment is in the host where second network interface card.
5. a kind of DHCP proxy node, which is characterized in that including receiving module and sending module, wherein
The receiving module is asked for being received from business network, and is taken from DHCP according to the request in managing network
Business node obtains IP address, and the request is used to indicate distributes IP address for virtual machine or physical machine;
The sending module, for sending the IP address to the virtual machine or physical machine.
6. agent node according to claim 5, which is characterized in that
The receiving module is specifically used for receiving the request from the virtual machine or physical machine, institute by the first network interface card
The first network interface card is stated for accessing the business network.
7. agent node according to claim 5 or 6, which is characterized in that
The receiving module, specifically for receiving institute of the DHCP service node according to the request distribution by the second network interface card
IP address is stated, second network interface card is for accessing the management network.
8. agent node according to claim 7, which is characterized in that
First network interface card is located on the host where second network interface card, and the DHCP proxy node deployment is in second net
Host where blocking.
9. a kind of computing device, which is characterized in that the computing device includes processor and memory, and the processor executes institute
The computer instruction of memory storage is stated to realize that dynamic host configuration protocol DHCP agent node, the DHCP proxy node are used
1 to 4 any one of them method is required in perform claim.
10. a kind of data center, which is characterized in that dynamic host configuration protocol DHCP agent node, DHCP service node and void
Quasi- machine is deployed in respectively on one or more computing devices of the data center, and the DHCP proxy node is used for perform claim
It is required that 1 to 4 any one of them method.
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PCT/CN2019/085602 WO2019214560A1 (en) | 2018-05-09 | 2019-05-06 | Dhcp packet processing method and device |
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