CN117459386A - Device and method for realizing network communication of simplified data center - Google Patents
Device and method for realizing network communication of simplified data center Download PDFInfo
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- CN117459386A CN117459386A CN202311423042.1A CN202311423042A CN117459386A CN 117459386 A CN117459386 A CN 117459386A CN 202311423042 A CN202311423042 A CN 202311423042A CN 117459386 A CN117459386 A CN 117459386A
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- 238000012545 processing Methods 0.000 claims abstract description 66
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- 238000007781 pre-processing Methods 0.000 claims abstract description 46
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Classifications
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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
- H04L41/0803—Configuration setting
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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
- H04L41/40—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities
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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
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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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
- H04L61/5069—Address allocation for group communication, multicast communication or broadcast communication
Abstract
The invention particularly relates to a device and a method for realizing network communication of a simplified data center. The device and the method for realizing the network communication of the simplified data center are characterized in that an ARP processing cluster is additionally arranged on an SDN data center network, and the ARP processing cluster adopts a pair of multimode and comprises a preprocessing server and at least one post-processing server; the preprocessing server manages all the post-processing servers in a nano-tube manner, monitors the post-processing servers in real time, synchronizes virtual machine information of the SDN data center network, and distributes ARP request tasks to the corresponding post-processing servers; the post-processing server stores virtual machine information and executes ARP request tasks. The device and the method for realizing the network communication of the simplified data center effectively reduce the pressure of SDN data center network for processing ARP request messages, reduce ARP broadcast messages in the data center network, avoid repeated response to the same ARP request messages, quickly respond to ARP request processing, enhance the network security of the data center and improve the use experience of the data center network.
Description
Technical Field
The present invention relates to the field of computer network communication technologies, and in particular, to an implementation apparatus and method for network communication in a reduced data center.
Background
A data center network is a network, storage, and computing resource that provides a wide range of workloads for enterprise/enterprise data center tenants. These workloads require different hardware or high-end network components to calculate, store, retrieve, and transmit data from the local and wide area networks, and thus, data center networks often accompany large volumes of business processes, placing a strain on the communication within the data center networks.
The basis of two-layer and three-layer traffic communication in an SDN (Software DefinedNetwork ) data center network depends on Address resolution protocol (Address RequestProtocol, ARP), hereinafter referred to as ARP. When the virtual machine communicates, firstly, the local MAC (MediaAccess Control ) table entry is queried, if the local MAC table entry exists, the ICMP (Internet ControlMessage Protocol ) message is directly packaged, and if the local MAC table entry does not exist, the MAC address of the opposite virtual machine is requested through broadcasting ARP. Under the condition of overlarge data center scale, more address resolution protocol inquiry and information transmission are brought, and larger pressure is brought to a data center network, so that the problems of network processing performance reduction and network delay are caused.
Aiming at the problem that ARP request analysis brings great pressure to a data center network, two solutions are provided by general manufacturers.
In the first scheme, the SDN controller replies all ARP requests;
the SDN controller learns the MAC of the virtual machine through the online of the virtual machine, so long as the virtual machine sends an ARP request message to the SDN controller in a packet-in mode, the SDN controller can find the MAC reply ARP response message of the destination IP to the requesting virtual machine. However, a significant disadvantage of this solution is that too many ARP requests can increase the processing pressure of the SDN controller, affecting the processing of its normal traffic.
In the second scheme, the virtual machine broadcasts an ARP request in a broadcast domain, and the virtual machine corresponding to the target IP replies the ARP request after receiving the broadcast message;
firstly, the behavior of ARP in SDN network is identical to the behavior of ARP in traditional two-layer exchange, and secondly, the pressure of the controller is reduced, even if the controller is down, ARP can work as long as the source virtual machine and the destination virtual machine are in. However, this solution has the disadvantage that ARP spoofing is easily caused and that in case of two layers being separated by three layers, the passage between the three layers needs to be opened.
In order to reduce the data processing pressure of an SDN controller and improve the communication quality, the invention provides a device and a method for realizing network communication of a simplified data center.
Disclosure of Invention
The invention provides a simple and efficient realization device and method for simplifying network communication of a data center in order to make up the defects of the prior art.
The invention is realized by the following technical scheme:
an implementation device for network communication of a reduced data center is characterized in that: an ARP processing cluster is additionally arranged in the SDN data center network and is responsible for storing virtual machine information in the SDN data center network, processing ARP request messages in the data center network, reducing data processing pressure of the SDN data center network, improving ARP request response rate, enhancing safety of the data center network and improving use experience of the data center network;
the ARP processing cluster consists of at least two servers, adopts a pair of multimode and comprises a preprocessing server and at least one post-processing server;
the preprocessing server is a control module of an ARP processing cluster, plays a role in overall situation in the SDN data center network, is responsible for managing all the post-processing servers, and monitors all the post-processing servers in real time, so that virtual machine information of the SDN data center network is to be synchronized and ARP request tasks are to be distributed to the corresponding post-processing servers;
the post-processing server is responsible for storing virtual machine information in the SDN data center network and executing ARP request tasks.
The virtual machine information includes, but is not limited to, IP address, MAC address, port number, host and network information.
All servers in the preprocessing server nanotube post-processing server monitor the heartbeat of the server; simultaneously, as an intermediate bridge, synchronously transmitting virtual machine information and subnet gateway port information in the SDN data center network to a post-processing server for storage;
in addition, the preprocessing server receives the ARP request and distributes an ARP request instruction to the server of the corresponding back-end processing module according to the hash strategy;
ARP request timing ensures that the same ARP request is processed only once within 3 minutes.
Specifically, the preprocessing server performs hash calculation on the IP address of the virtual machine to store the post-processing server, and synchronizes the virtual machine information to the corresponding post-processing server;
the preprocessing server receives an ARP request sent by the virtual machine, adopts a hash load balancing algorithm, calculates a hash value of the IP of the virtual machine of the request destination, finds a corresponding post-processing server, and forwards the ARP request to the corresponding post-processing server for processing.
In order to avoid the same ARP request from being processed for multiple times, the preprocessing server is added with a countdown function, and the processing time of the ARP message of the same source address request and the same destination address is 3 minutes, namely the same ARP request message is processed once and then is not processed if the message is received within 3 minutes.
The post-processing server receives virtual machine information synchronized by the preprocessing server and stores the virtual machine information into a memory;
receiving ARP request tasks distributed by a preprocessing server, searching virtual machine information of a corresponding destination IP in a memory, and packaging ARP response messages to reply to a source request virtual machine;
if virtual machine information corresponding to the target IP can not be found in the memory, the ARP request message is packaged for broadcast searching, and the broadcasted ARP request message can not be processed again by the SDN data center network.
A method for realizing network communication of a simplified data center is characterized in that: the method comprises the following steps:
step S1: SDN data center network sends virtual machine information synchronization information to ARP processing cluster
The virtual machine n is managed to an SDN data center network through a port activation event, and the SDN data center network synchronizes virtual machine information to a preprocessing server in the form of XML (Extensible Markup Language ) through a NETCONF (Network Configuration Protocol, network configuration protocol) protocol;
the preprocessing server hashes the IP address of the virtual machine n to obtain a processing server n after synchronizing the virtual machine;
step S2: under the condition that the ARP processing cluster knows the information of the virtual machine of the request destination, the ARP processing cluster processes an ARP request message;
step S2.1: when the virtual machine m communicates with the virtual machine n, the virtual machine m initiates an ARP request message for requesting the virtual machine n;
step S2.2: the ARP request message is sent to a preprocessing server, and the preprocessing server obtains an ARP request instruction to be sent to a post-processing server n through the IP address hash of a target virtual machine n;
step S2.3: the post-processing server n receives the ARP request message to find the MAC address of the virtual machine n, encapsulates the ARP request message into an ARP response message and sends the ARP response message to the virtual machine m;
step S2.4: the virtual machine m analyzes the ARP response message to obtain the MAC address of the virtual machine n, writes the MAC address into the MAC table entry, and encapsulates the ICMP message to communicate with the virtual machine n;
step S3: under the condition that the ARP processing cluster is not capable of requesting the information of the destination virtual machine, the ARP processing cluster processes an ARP request message;
step S3.1: the virtual machine m requests to communicate with the virtual machine n, and sends an ARP request message to request the MAC address of the virtual machine n;
step S3.2: the ARP request message is hashed and distributed to a post-processing server n through a pre-processing server, and the post-processing server does not inquire the information of the virtual machine corresponding to the IP, so that the ARP request message is packaged and broadcasted to a data center network;
step S3.3: after receiving the ARP request message, the virtual machine n replies an ARP response message to the virtual machine m, the virtual machine m learns the MAC address of the virtual machine n, writes the MAC table entry into the virtual machine m, and encapsulates the ICMP message to communicate with the virtual machine n.
The virtual machine information comprises virtual machine ID, IP address, MAC address, port number, host and network information;
in the step S1, when the subnet is mounted on the routing table, the subnet gateway port is activated, and the process of synchronizing the subnet gateway port to the ARP processing cluster is triggered at the same time.
An apparatus for simplifying data center network communications, characterized by: comprising a memory and a processor; the memory is used for storing a computer program, and the processor is used for implementing the method steps described above when executing the computer program.
A readable storage medium, characterized by: the readable storage medium has stored thereon a computer program which, when executed by a processor, implements the method steps as described above.
The beneficial effects of the invention are as follows: the device and the method for realizing the network communication of the simplified data center effectively reduce the pressure of SDN data center network for processing ARP request messages, reduce ARP broadcast messages in the data center network, avoid repeated response to the same ARP request messages, quickly respond to ARP request processing, enhance the network security of the data center and improve the use experience of the data center network.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a method for processing information of a cluster synchronous virtual machine by ARP according to the invention.
Fig. 2 is a schematic diagram of an ARP request message processing flow when the ARP processing cluster of the present invention is known to request destination virtual machine information.
Fig. 3 is a schematic diagram of an ARP request message processing flow when the ARP processing cluster of the present invention does not know the virtual machine information of the request destination.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present invention, the following description will make clear and complete description of the technical solution of the present invention in combination with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
According to the implementation device for simplifying the network communication of the data center, an ARP processing cluster is additionally arranged in the SDN data center network and is responsible for storing virtual machine information in the SDN data center network, processing ARP request messages in the data center network, reducing the data processing pressure of the SDN data center network, improving the response rate of the ARP request, enhancing the safety of the data center network and improving the use experience of the data center network;
the ARP processing cluster consists of at least two servers, adopts a pair of multimode and comprises a preprocessing server and at least one post-processing server;
the preprocessing server adopts a server with higher specification and performance, has good data processing capacity, and the post-processing server adopts a server with higher storage capacity, so that the storage of a large amount of data is supported. The preprocessing server and the post-processing server respectively complete the processing of the ARP request message together. The selection of the number of servers in the ARP processing cluster may be determined according to the size of the data center network, so as to avoid processing bottlenecks or resource waste caused by mismatch of the sizes of the two.
The preprocessing server is a control module of an ARP processing cluster, plays a role in overall situation in the SDN data center network, is responsible for managing all the post-processing servers, and monitors all the post-processing servers in real time, so that virtual machine information of the SDN data center network is to be synchronized and ARP request tasks are to be distributed to the corresponding post-processing servers;
the post-processing server is responsible for storing virtual machine information in the SDN data center network and executing ARP request tasks.
The virtual machine information includes, but is not limited to, IP address, MAC address, port number, host and network information.
All servers in the preprocessing server nanotube post-processing server monitor the heartbeat of the server; simultaneously, as an intermediate bridge, synchronously transmitting virtual machine information and subnet gateway port information in the SDN data center network to a post-processing server for storage;
in addition, the preprocessing server receives the ARP request and distributes an ARP request instruction to the server of the corresponding back-end processing module according to the hash strategy;
ARP request timing ensures that the same ARP request is processed only once within 3 minutes.
Specifically, the preprocessing server performs hash calculation on the IP address of the virtual machine to store the post-processing server, and synchronizes the virtual machine information to the corresponding post-processing server;
the preprocessing server receives an ARP request sent by the virtual machine, adopts a hash load balancing algorithm, calculates a hash value of the IP of the virtual machine of the request destination, finds a corresponding post-processing server, and forwards the ARP request to the corresponding post-processing server for processing.
In order to avoid that the same ARP request is processed for multiple times, the preprocessing server is added with a countdown function, and the processing time of ARP messages of the same source address request and the same destination address is 3 minutes, namely, the same ARP request message is processed once and then is not processed if the message is received within 3 minutes, and the processing can effectively avoid the attack of ARP flooding on an ARP processing cluster.
The post-processing server receives virtual machine information synchronized by the preprocessing server and stores the virtual machine information into a memory;
receiving ARP request tasks distributed by a preprocessing server, searching virtual machine information of a corresponding destination IP in a memory, and packaging ARP response messages to reply to a source request virtual machine;
if virtual machine information corresponding to the target IP can not be found in the memory, the ARP request message is packaged for broadcast searching, and the broadcasted ARP request message can not be processed again by the SDN data center network.
The method for realizing the network communication of the simplified data center comprises the following steps:
step S1: SDN data center network sends virtual machine information synchronization information to ARP processing cluster
The virtual machine n (n and m are natural numbers not less than 1 and n is not equal to m) is managed to an SDN data center network through a port activation event, and the SDN data center network synchronizes virtual machine information to a preprocessing server in the form of XML (Extensible Markup Language ) through a NETCONF (Network Configuration Protocol, network configuration protocol) protocol;
the preprocessing server hashes the IP address of the virtual machine n to obtain a processing server n after synchronizing the virtual machine;
the virtual machine information comprises virtual machine ID, IP address, MAC address, port number, host and network information;
in the step S1, when the subnet is mounted on the routing table, the subnet gateway port is activated, and the process of synchronizing the subnet gateway port to the ARP processing cluster is triggered at the same time.
Step S2: under the condition that the ARP processing cluster knows the information of the virtual machine of the request destination, the ARP processing cluster processes an ARP request message;
step S2.1: when the virtual machine m communicates with the virtual machine n, the virtual machine m initiates an ARP request message for requesting the virtual machine n;
step S2.2: the ARP request message is sent to a preprocessing server, and the preprocessing server obtains an ARP request instruction to be sent to a post-processing server n through the IP address hash of a target virtual machine n;
step S2.3: the post-processing server n receives the ARP request message to find the MAC address of the virtual machine n, encapsulates the ARP request message into an ARP response message and sends the ARP response message to the virtual machine m;
step S2.4: the virtual machine m analyzes the ARP response message to obtain the MAC address of the virtual machine n, writes the MAC address into the MAC table entry, and encapsulates the ICMP message to communicate with the virtual machine n;
step S3: under the condition that the ARP processing cluster is not capable of requesting the information of the destination virtual machine, the ARP processing cluster processes an ARP request message;
step S3.1: the virtual machine m requests to communicate with the virtual machine n, and sends an ARP request message to request the MAC address of the virtual machine n;
step S3.2: the ARP request message is hashed and distributed to a post-processing server n through a pre-processing server, and the post-processing server does not inquire the information of the virtual machine corresponding to the IP, so that the ARP request message is packaged and broadcasted to a data center network;
step S3.3: after receiving the ARP request message, the virtual machine n replies an ARP response message to the virtual machine m, the virtual machine m learns the MAC address of the virtual machine n, writes the MAC table entry into the virtual machine m, and encapsulates the ICMP message to communicate with the virtual machine n.
The device for simplifying data center network communication comprises a memory and a processor; the memory is used for storing a computer program, and the processor is used for implementing the method steps described above when executing the computer program.
The readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method steps as described above.
The above examples are only one of the specific embodiments of the present invention, and the ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the scope of the present invention.
Claims (9)
1. An implementation device for network communication of a reduced data center is characterized in that: an ARP processing cluster is additionally arranged in the SDN data center network and is responsible for storing virtual machine information in the SDN data center network, processing ARP request messages in the data center network, reducing data processing pressure of the SDN data center network, improving ARP request response rate, enhancing safety of the data center network and improving use experience of the data center network;
the virtual machine information includes, but is not limited to, an IP address, a MAC address, a port number, a host machine and network information;
the ARP processing cluster consists of at least two servers, adopts a pair of multimode and comprises a preprocessing server and at least one post-processing server;
the preprocessing server is a control module of an ARP processing cluster, plays a role in overall situation in the SDN data center network, is responsible for managing all the post-processing servers, and monitors all the post-processing servers in real time, so that virtual machine information of the SDN data center network is to be synchronized and ARP request tasks are to be distributed to the corresponding post-processing servers;
the post-processing server is responsible for storing virtual machine information in the SDN data center network and executing ARP request tasks.
2. The apparatus for implementing reduced data center network communication of claim 1, wherein: all servers in the preprocessing server nanotube post-processing server monitor the heartbeat of the server; simultaneously, as an intermediate bridge, synchronously transmitting virtual machine information and subnet gateway port information in the SDN data center network to a post-processing server for storage;
in addition, the preprocessing server receives the ARP request and distributes an ARP request instruction to the server of the corresponding back-end processing module according to the hash strategy;
ARP request timing ensures that the same ARP request is processed only once within 3 minutes.
3. The apparatus for implementing reduced data center network communication of claim 2, wherein: the preprocessing server performs hash calculation on the IP address of the virtual machine to store the post-processing server, and synchronizes the virtual machine information to the corresponding post-processing server;
the preprocessing server receives an ARP request sent by the virtual machine, adopts a hash load balancing algorithm, calculates a hash value of the IP of the virtual machine of the request destination, finds a corresponding post-processing server, and forwards the ARP request to the corresponding post-processing server for processing.
4. The apparatus for implementing reduced data center network communication of claim 2, wherein: in order to avoid the same ARP request from being processed for multiple times, the preprocessing server is added with a countdown function, and the processing time of the ARP message of the same source address request and the same destination address is 3 minutes, namely the same ARP request message is processed once and then is not processed if the message is received within 3 minutes.
5. The apparatus for implementing reduced data center network communication of claim 4, wherein: the post-processing server receives virtual machine information synchronized by the preprocessing server and stores the virtual machine information into a memory;
receiving ARP request tasks distributed by a preprocessing server, searching virtual machine information of a corresponding destination IP in a memory, and packaging ARP response messages to reply to a source request virtual machine;
if virtual machine information corresponding to the target IP can not be found in the memory, the ARP request message is packaged for broadcast searching, and the broadcasted ARP request message can not be processed again by the SDN data center network.
6. A method for realizing network communication of a simplified data center is characterized in that: the method comprises the following steps:
step S1: SDN data center network sends virtual machine information synchronization information to ARP processing cluster
The virtual machine n is managed to an SDN data center network through a port activation event, and the SDN data center network synchronizes virtual machine information to a preprocessing server in an XML form through a NETCONF protocol;
the preprocessing server hashes the IP address of the virtual machine n to obtain a processing server n after synchronizing the virtual machine;
the virtual machine information comprises virtual machine ID, IP address, MAC address, port number, host and network information;
step S2: under the condition that the ARP processing cluster knows the information of the virtual machine of the request destination, the ARP processing cluster processes an ARP request message;
step S2.1: when the virtual machine m communicates with the virtual machine n, the virtual machine m initiates an ARP request message for requesting the virtual machine n;
step S2.2: the ARP request message is sent to a preprocessing server, and the preprocessing server obtains an ARP request instruction to be sent to a post-processing server n through the IP address hash of a target virtual machine n;
step S2.3: the post-processing server n receives the ARP request message to find the MAC address of the virtual machine n, encapsulates the ARP request message into an ARP response message and sends the ARP response message to the virtual machine m;
step S2.4: the virtual machine m analyzes the ARP response message to obtain the MAC address of the virtual machine n, writes the MAC address into the MAC table entry, and encapsulates the ICMP message to communicate with the virtual machine n;
step S3: under the condition that the ARP processing cluster is not capable of requesting the information of the destination virtual machine, the ARP processing cluster processes an ARP request message;
step S3.1: the virtual machine m requests to communicate with the virtual machine n, and sends an ARP request message to request the MAC address of the virtual machine n;
step S3.2: the ARP request message is hashed and distributed to a post-processing server n through a pre-processing server, and the post-processing server does not inquire the information of the virtual machine corresponding to the IP, so that the ARP request message is packaged and broadcasted to a data center network;
step S3.3: after receiving the ARP request message, the virtual machine n replies an ARP response message to the virtual machine m, the virtual machine m learns the MAC address of the virtual machine n, writes the MAC table entry into the virtual machine m, and encapsulates the ICMP message to communicate with the virtual machine n.
7. The method for implementing reduced data center network communication of claim 6, wherein: in the step S1, when the subnet is mounted on the routing table, the subnet gateway port is activated, and the process of synchronizing the subnet gateway port to the ARP processing cluster is triggered at the same time.
8. An apparatus for simplifying data center network communications, characterized by: comprising a memory and a processor; the memory is adapted to store a computer program, the processor being adapted to implement the method steps of any of claims 6 to 7 when the computer program is executed.
9. A readable storage medium, characterized by: the readable storage medium has stored thereon a computer program which, when executed by a processor, implements the method steps of any of claims 6 to 7.
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