CN103905577A - Address resolution protocol message processing method and system - Google Patents
Address resolution protocol message processing method and system Download PDFInfo
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- CN103905577A CN103905577A CN201210587166.9A CN201210587166A CN103905577A CN 103905577 A CN103905577 A CN 103905577A CN 201210587166 A CN201210587166 A CN 201210587166A CN 103905577 A CN103905577 A CN 103905577A
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Abstract
The invention discloses an address resolution protocol message processing method. The method comprises the steps that a source virtual machine sends an address resolution protocol (ARP) request message to source switchboard; the source switchboard packages the ARP request message in a data packet report message to be reported to a controller; after the controller confirms that a target IP address is the IP address of a target virtual machine according to the data packet report message, a service message transmission path is calculated, a service stream table is issued to a switchboard on the path and the media access control (MAC) address of the target virtual machine is packaged into an ARP response message to be replied to the source virtual machine; the source virtual machine sends a service message to the target virtual machine according to the MAC address of the target virtual machine. The invention further discloses an address resolution protocol message processing system. By means of the address resolution protocol message processing method and system, when the source virtual machine sends service messages, the service messages do not need to be reported to the controller again by the source switchboard, and therefore service message processing delay is shortened.
Description
Technical field
The present invention relates to the message treatment technology of software defined network (SDN), relate in particular to processing method and the system of a kind of address resolution protocol (ARP, Address Resolution Protocol) message.
Background technology
In SDN network, when source switch (switch) is received after the ARP request message of source virtual machine transmission, directly described ARP request message being encapsulated in to PacketIn information reporting controller (controller) processes, follow-up source virtual machine is received arp reply, after encapsulation service message sends on the switch of source, source switch still needs to report controller, determine business flow list by controller, like this, on switch, need buffer memory part flow, until controller business flow list is issued to after the switch of source could normal forwarding service message, increase the time delay of service message processing.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of processing method and system of address analysis protocol message, reduces service message transmission lag.
For achieving the above object, technical scheme of the present invention is achieved in that
The processing method of a kind of address analysis protocol message provided by the invention, the method comprises:
Source virtual machine sends ARP request message to source switch; Source switch is encapsulated in packet reporting message by ARP request message and is reported to controller;
Controller is according to described packet reporting message, after determining that targeted internet agreement (IP) address is the IP address of object virtual machine, computing service message transmissions path, issuing service stream table is to the switch on service message transmission path, and media interviews control (MAC) address of object virtual machine is encapsulated into arp reply message, reply to source virtual machine;
Source virtual machine is according to the MAC Address of object virtual machine, and encapsulation service message also sends to object virtual machine.
In such scheme, described controller is according to described packet reporting message, determines that target ip address is that the IP address of object virtual machine is:
Described controller takes out the Target IP field in ARP request message from described packet reporting message, according to the target ip address in described Target IP field, judge whether described ARP request message is gratuitous ARP packet, in the time being not gratuitous ARP packet, judge whether described target ip address is the IP address of the network equipment, in the time not being the IP address of the network equipment, determine that the target ip address in ARP request message is the IP address of object virtual machine.
In such scheme, describedly judge whether described ARP request message is that gratuitous ARP packet is: judge whether the Target IP field in ARP request message equals source IP field, in the time equaling, described ARP request message is gratuitous ARP packet, in the time being not equal to, described ARP request message is not gratuitous ARP packet.
In such scheme, describedly judge that whether described target ip address is that the IP address of the network equipment is: judge whether described target ip address is the gateway ip address for 3 layers of forwarding, if, the IP address that described target ip address is the network equipment, if not, described target ip address is not the IP address of the network equipment.
The treatment system of a kind of address analysis protocol message provided by the invention, this system comprises: source virtual machine, source switch, controller, object switch; Wherein,
Source virtual machine, for sending ARP request message to source switch; And according to the MAC Address of object virtual machine, encapsulation service message also sends to object virtual machine;
Source switch, is reported to controller for ARP request message is encapsulated in to packet reporting message; Receive the business flow list that controller issues;
Controller, for according to packet reporting message, after determining that target ip address is the IP address of object virtual machine, computing service message transmissions path, issuing service stream is shown to the switch on described path, and the MAC Address of object virtual machine is encapsulated into arp reply message, replies to source virtual machine;
Object switch, the business flow list issuing for receiving controller, and forwarding service message is to object virtual machine.
In such scheme, described controller, specifically for taking out the Target IP field in ARP request message, according to the target ip address in described Target IP field, judge whether described ARP request message is gratuitous ARP packet, in the time being not gratuitous ARP packet, judge whether described target ip address is the IP address of the network equipment, in the time not being the IP address of the network equipment, determine that the target ip address in ARP request message is the IP address of object virtual machine.
In such scheme, described controller, specifically for judging whether the Target IP field in ARP request message equals source IP field, and in the time equaling, described ARP request message is gratuitous ARP packet, in the time being not equal to, described ARP request message is not gratuitous ARP packet.
In such scheme, described controller, specifically for judging whether described target ip address is the gateway ip address forwarding for 3 layers (L3), if, the IP address that described target ip address is the network equipment, if not, described target ip address is not the IP address of the network equipment.
In such scheme, described controller, also in the time that definite described ARP request message is gratuitous ARP packet, contracts out (PacketOut) message encapsulation arp reply message by data and replies to source virtual machine or do not send arp reply message.
In such scheme, described controller, also in the time determining the IP address that target ip address is the network equipment, replies to source virtual machine by PacketOut message encapsulation arp reply message.
The invention provides a kind of processing method and system of address analysis protocol message, source virtual machine sends ARP request message to source switch; Source switch is encapsulated in packet reporting message by ARP request message and is reported to controller; Controller is according to packet reporting message, after determining that target ip address is the IP address of object virtual machine, computing service message transmissions path, issuing service stream table is to the switch on described path, and the MAC Address of object virtual machine is encapsulated into arp reply message, reply to source virtual machine; Source virtual machine, according to the MAC Address of object virtual machine, sends to object virtual machine by service message; So, source virtual machine, in the time sending service message, does not need source switch again to report controller, has reduced service message processing delay.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the processing method of address analysis protocol message provided by the invention;
Fig. 2 is the structural representation of the treatment system of address analysis protocol message provided by the invention;
The schematic flow sheet of the processing method of the address analysis protocol message that Fig. 3 provides for the embodiment of the present invention one.
Embodiment
Basic thought of the present invention is: source virtual machine sends ARP request message to source switch; Source switch is encapsulated in packet reporting message by ARP request message and is reported to controller; Controller is according to packet reporting message, after determining that target ip address is the IP address of object virtual machine, calculate ARP service message path, issue ARP stream and show to the switch on described path, and the MAC Address of object virtual machine is encapsulated into arp reply message, reply to source virtual machine; Source virtual machine is according to the MAC Address of object virtual machine, and encapsulation service message also sends to object virtual machine.
Here, described source switch is the switch being connected with source virtual machine.
Below by drawings and the specific embodiments, the present invention is described in further detail.
The present invention realizes a kind of processing method of address analysis protocol message, and as shown in Figure 1, the method comprises following step:
Step 101: source virtual machine sends ARP request message to source switch;
Step 102: source switch is encapsulated in packet reporting message by ARP request message and is reported to controller;
Here, described packet reporting message is generally PacketIn message.
Step 103: controller is according to packet reporting message, after the target ip address of determining ARP request message is the IP address of object virtual machine, computing service message transmissions path, issuing service stream table is to the switch on described path, and the MAC Address of object virtual machine is encapsulated into arp reply message, reply to source virtual machine;
Described controller is according to packet reporting message, determines that target ip address is that the IP address of object virtual machine is:
Described controller takes out target (Target) the IP field in ARP request message from packet reporting message, according to the target ip address in described Target IP field, judge whether described ARP request message is gratuitous ARP packet, in the time being not gratuitous ARP packet, judge whether described target ip address is the IP address of the network equipment, in the time not being the IP address of the network equipment, determine that the target ip address in ARP request message is the IP address of object virtual machine;
Describedly judge whether described ARP request message is that gratuitous ARP packet is: judge whether the Target IP field in ARP request message equals source (Source) IP field, in the time equaling, described ARP request message is gratuitous ARP packet, in the time being not equal to, described ARP request message is not gratuitous ARP packet;
Describedly judge that whether described target ip address is that the IP address of the network equipment is: judge whether described target ip address is the gateway ip address forwarding for 3 layers (L3), if, the IP address that described target ip address is the network equipment, if not, described target ip address is not the IP address of the network equipment;
Step 104: source virtual machine is according to the MAC Address of object virtual machine, and encapsulation service message also sends to object virtual machine.
Said method also comprises: in the time that definite described ARP request message is gratuitous ARP packet, is replied to source virtual machine or do not sent arp reply message by PacketOut message encapsulation arp reply message;
Said method also comprises: in the time determining the IP address that target ip address is the network equipment, reply to source virtual machine by PacketOut message encapsulation arp reply message.
In order to realize said method, the present invention also provides a kind for the treatment of system of address analysis protocol message, and as shown in Figure 2, this system comprises: source virtual machine 21, source switch 22, controller 23, object switch 24; Wherein,
Source virtual machine 21, for sending ARP request message to source switch 22; And according to the MAC Address of object virtual machine, encapsulation service message also sends to object virtual machine;
Source switch 22, is reported to controller 23 for ARP request message is encapsulated in to packet reporting message; Receive the business flow list that controller 23 issues;
Controller 23, be used for according to packet reporting message, after the target ip address of determining ARP request message is the IP address of object virtual machine, computing service message transmissions path, issuing service stream table is to the switch on described path, and the MAC Address of object virtual machine is encapsulated into arp reply message, reply to source virtual machine 21;
Object switch 24, the business flow list issuing for receiving controller 23, and forwarding service message is to object virtual machine;
Described controller 23, specifically for taking out the Target IP field in ARP request message, according to the target ip address in described Target IP field, judge whether described ARP request message is gratuitous ARP packet, in the time being not gratuitous ARP packet, judge whether described target ip address is the IP address of the network equipment, in the time not being the IP address of the network equipment, determine that the target ip address in ARP request message is the IP address of object virtual machine;
Described controller 23, specifically for judging whether the Target IP field in ARP request message equals source IP field, and in the time equaling, described ARP request message is gratuitous ARP packet, in the time being not equal to, described ARP request message is not gratuitous ARP packet;
Described controller 23, specifically for judging whether described target ip address is the gateway ip address forwarding for 3 layers (L3), if so, the IP address that described target ip address is the network equipment, if not, described target ip address is not the IP address of the network equipment;
Described controller 23, also in the time that definite described ARP request message is gratuitous ARP packet, is replied to source virtual machine 21 or is not sent arp reply message by PacketOut message encapsulation arp reply message;
Described controller 23, also in the time determining the IP address that target ip address is the network equipment, replies to source virtual machine 21 by PacketOut message encapsulation arp reply message.
Describe implementation procedure and the principle of method of the present invention in detail below in conjunction with specific embodiment.
Embodiment mono-
As shown in Figure 3, VM1 is that source virtual machine, VM2 are object virtual machine to the present embodiment, realizes the processing method of address analysis protocol message, comprising:
Step 201: connect with controller after source switch powers on;
Step 202:VM1 initiation is communicated by letter with VM2's, sends ARP request message;
Step 203: after source switch receives the ARP request message of VM1, described ARP request message is encapsulated in to PacketIn information reporting to controller;
Step 204: controller is according to PacketIn message, after determining that target ip address is the IP address of object virtual machine, computing service message transmissions path, issuing service stream table is to the switch on described path, and the MAC Address of object virtual machine is encapsulated into arp reply message, reply to source virtual machine;
Step 205: source virtual machine, according to the MAC Address of object virtual machine, sends to object virtual machine by service message by source switch, object switch.
In sum, source switch, in the time receiving ARP request message, is encapsulated in packet reporting message by ARP request message and is reported to controller, trigger controller issuing service stream table, in the time sending service message, do not need source switch again to report controller, reduce the processing delay of service message.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a processing method for address analysis protocol message, is characterized in that, the method comprises:
Source virtual machine sends ARP(Address Resolution Protocol) request message to source switch; Source switch is encapsulated in packet reporting message by ARP request message and is reported to controller;
Controller is according to described packet reporting message, after determining that targeted internet agreement (IP) address is the IP address of object virtual machine, computing service message transmissions path, issuing service stream table is to the switch on service message transmission path, and media interviews control (MAC) address of object virtual machine is encapsulated into arp reply message, reply to source virtual machine;
Source virtual machine is according to the MAC Address of object virtual machine, and encapsulation service message also sends to object virtual machine.
2. processing method according to claim 1, is characterized in that, described controller is according to described packet reporting message, determines that target ip address is that the IP address of object virtual machine is:
Described controller takes out the Target IP field in ARP request message from described packet reporting message, according to the target ip address in described Target IP field, judge whether described ARP request message is gratuitous ARP packet, in the time being not gratuitous ARP packet, judge whether described target ip address is the IP address of the network equipment, in the time not being the IP address of the network equipment, determine that the target ip address in ARP request message is the IP address of object virtual machine.
3. processing method according to claim 2, it is characterized in that, describedly judge whether described ARP request message is that gratuitous ARP packet is: judge whether the Target IP field in ARP request message equals source IP field, in the time equaling, described ARP request message is gratuitous ARP packet, in the time being not equal to, described ARP request message is not gratuitous ARP packet.
4. processing method according to claim 2, it is characterized in that, describedly judge that whether described target ip address is that the IP address of the network equipment is: judge whether described target ip address is the gateway ip address for 3 layers of forwarding, if, the IP address that described target ip address is the network equipment, if not, described target ip address is not the IP address of the network equipment.
5. a treatment system for address analysis protocol message, is characterized in that, this system comprises: source virtual machine, source switch, controller, object switch; Wherein,
Source virtual machine, for sending ARP request message to source switch; And according to the MAC Address of object virtual machine, encapsulation service message also sends to object virtual machine;
Source switch, is reported to controller for ARP request message is encapsulated in to packet reporting message; Receive the business flow list that controller issues;
Controller, for according to packet reporting message, after determining that target ip address is the IP address of object virtual machine, computing service message transmissions path, issuing service stream is shown to the switch on described path, and the MAC Address of object virtual machine is encapsulated into arp reply message, replies to source virtual machine;
Object switch, the business flow list issuing for receiving controller, and forwarding service message is to object virtual machine.
6. treatment system according to claim 5, it is characterized in that, described controller, specifically for taking out the Target IP field in ARP request message, according to the target ip address in described Target IP field, judge whether described ARP request message is gratuitous ARP packet, in the time being not gratuitous ARP packet, judge whether described target ip address is the IP address of the network equipment, in the time not being the IP address of the network equipment, determine that the target ip address in ARP request message is the IP address of object virtual machine.
7. treatment system according to claim 6, it is characterized in that, described controller, specifically for judging whether the Target IP field in ARP request message equals source IP field, in the time equaling, described ARP request message is gratuitous ARP packet, and in the time being not equal to, described ARP request message is not gratuitous ARP packet.
8. treatment system according to claim 6, it is characterized in that, described controller, specifically for judging whether described target ip address is the gateway ip address forwarding for 3 layers (L3), if, the IP address that described target ip address is the network equipment, if not, described target ip address is not the IP address of the network equipment.
9. treatment system according to claim 7, it is characterized in that, described controller, also in the time that definite described ARP request message is gratuitous ARP packet, contracts out (PacketOut) message encapsulation arp reply message by data and replies to source virtual machine or do not send arp reply message.
10. treatment system according to claim 8, is characterized in that, described controller, also in the time determining the IP address that target ip address is the network equipment, replies to source virtual machine by PacketOut message encapsulation arp reply message.
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| CN109729026A (en) * | 2017-10-27 | 2019-05-07 | 迈普通信技术股份有限公司 | A kind of control method and SDN controller of SDN network |
| CN109257265B (en) * | 2018-08-10 | 2021-04-20 | 锐捷网络股份有限公司 | Flooding suppression method, VXLAN bridge, gateway and system |
| CN109257265A (en) * | 2018-08-10 | 2019-01-22 | 锐捷网络股份有限公司 | One kind floods suppressing method, VXLAN bridge, gateway and system |
| CN109803032A (en) * | 2019-02-26 | 2019-05-24 | 安徽皖通邮电股份有限公司 | A kind of processing method of ARP message |
| CN113676409A (en) * | 2021-08-16 | 2021-11-19 | 北京全路通信信号研究设计院集团有限公司 | Message forwarding method and device, electronic equipment and storage medium |
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