CN102137007A - Method and system for generating network topology as well as coordinator - Google Patents
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Abstract
The invention provides a method and system for generating network topology as well as a coordinator, belonging to the technical field of communications. The system comprises a virtualized server webmaster, the coordinator and a server. The method comprises the following steps: acquiring port parameters of a switch from a virtual machine, wherein the port parameters are acquired by the virtual machine through monitoring link layer messages of the switch; acquiring port parameters of a virtual switch (vSwitch) connected with the switch; and generating the network topology in accordance with the port parameters of the switch and the port parameters of the vSwitch. According to the embodiment of the invention, the network topology can be generated by monitoring the link layer messages of the switch and acquiring the port parameters of the vSwitch. In the embodiment of the invention, the network topology can be generated without improving the vSwitch and the switch, thus being favorable for management and facilitating data transmission of various application programs.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of network topology generation method, system, coordinator.
Background technology
Virtual machine is meant and is many virtual machines of mutually isolating with a station server is virtual, or with multiple servers virtual be a virtual machine, with utilance and the simplified system management that improves resource.Existing virtual machine carries out data interaction by vSwitch (VirtualSwitch, virtual switch), and between the server by setting up physical connection between network interface card and the switch; Wherein, this switch can also can be other switches for Tor (Top-of-Rack, the frame topcross is changed planes).
Common vSwitch has a plurality of ports, to connect virtual machine and switch respectively.And common virtual machine, virtual switch manage by vCenter (virtualized server webmaster).Simultaneously, can coordinate by Orchestrator (coordinator) between physical network and the virtual network.
Link discovery is that the second layer that is provided with for the autgmentability that improves network is found (Layer 2 Discovery), LLDP agreement (Link Layer Discovery Protocol for example, linking layer is found agreement) or cdp protocol (Cisco Discovery Protocol, cisco discovery protocol) etc.Link discovery can make the node in the network send message to other nodes, so that other nodes are known the existence of self.With the LLDP agreement is example, and node can send to other direct-connected nodes with the encapsulation such as disposal ability, management address, device identification, interface identifier of himself.
Usually, need generate network topology, so that management and application at control end.But because the MAC Address of existing vSwitch shielding server so just causes the control end of virtual machine can't obtain the whole network topology.
Summary of the invention
For the control end that solves virtual machine can't obtain the problem of whole network topology, the embodiment of the invention has proposed a kind of network topology generation method, system, coordinator, and described technical scheme is as follows:
The embodiment of the invention has proposed a kind of network topology generation method, comprising:
Obtain the port parameter of switch from virtual machine, described port parameter is that described virtual machine obtains by the link layer message of monitoring described switch;
Obtain the port parameter of the virtual switch that is connected with described switch;
Generate network topology according to the port parameter of described switch and the port parameter of described virtual switch.
The embodiment of the invention has also proposed a kind of coordinator, comprising:
Receiver module is used for obtaining from virtual machine the port parameter of switch, and described port parameter is that described virtual machine obtains by the link layer message of monitoring described switch;
Acquisition module is used to obtain the port parameter of the virtual switch that is connected with described switch;
The network topology generation module is used for generating network topology by the port parameter of described switch and the port parameter of described virtual switch.
The embodiment of the invention has also proposed a kind of network topology generation system, comprising: virtualized server webmaster, coordinator and server;
Described virtualized server webmaster is used to make described server to generate described virtual machine;
Described server is used to generate virtual machine, and the message of the link layer of described virtual machine snooping switch obtains the port parameter of switch;
Described coordinator is used for obtaining from described virtualized server webmaster the port parameter of virtual switch, and obtains the port parameter of switch from described virtual machine, generates network topology.
The beneficial effect of the technical scheme that the embodiment of the invention provides is: the embodiment of the invention can receive the message of the link layer of snooping switch by virtual machine, and obtains the port parameter of vSwitch, to generate network topology.Need not in the embodiment of the invention vSwitch and switch are made improvement, can obtain the port parameter of switch and virtual switch, to generate network topology.Like this can be so that manage, and can make things convenient for various application's data transmission.The message of monitored link layer need not virtual machine and makes complex calculations and storage.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do one to the accompanying drawing that uses among the embodiment below introduces simply, apparently, below listed accompanying drawing only be some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of first embodiment of the invention;
Fig. 2 is the schematic flow sheet of second embodiment of the invention;
Fig. 3 is the structural representation of third embodiment of the invention;
Fig. 4 is the structural representation of fifth embodiment of the invention;
Fig. 5 is the structural representation of sixth embodiment of the invention;
Fig. 6 is the structural representation of seventh embodiment of the invention;
Fig. 7 is for realizing the schematic network structure of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
First embodiment of the invention has proposed a kind of network topology generation method, and its flow process comprises as shown in Figure 1:
Wherein, this switch can any switch of the prior art, for example frame topcross change planes (Tor).The message of this link layer can be for the LLDP protocol massages, also can be other agreements, cdp protocol (Cisco Discovery Protocol for example, CISCO discovery protocol), (Extreme Discovery Protocol, the utmost point existing agreement of setting out), NDP agreement (Nortel DiscoveryProtocol, NORTEL is found agreement) etc.
The embodiment of the invention can receive the message of the link layer of snooping switch by virtual machine, and obtains the port parameter of vSwitch, to generate network topology.Need not in the embodiment of the invention vSwitch and switch are made improvement, can obtain the port parameter of switch and virtual switch, to generate network topology.Like this can be so that manage, and can make things convenient for various application's data transmission.The message of monitored link layer need not virtual machine and makes complex calculations and storage.
Embodiment 2
Second embodiment of the invention has proposed a kind of network topology generation method, is to improve on the basis of first embodiment.In embodiments of the present invention, can obtain the switch ports themselves parameter from virtual machine, and obtain the port parameter of virtual switch, to generate network topology from vCenter by the coordinator.Its flow process comprises as shown in Figure 2:
If the message of link layer is the LLDP protocol massages, can generates a virtual machine by vCenter, and make this virtual machine operation LLDP Daemon program (Link Layer Discovery Protocol demons).Wherein, the LLDP message that LLDP Daemon can the monitored link layer.Be that described step 201 can specifically comprise:
VCenter makes server generate a virtual machine, and makes described virtual machine operation LLDP Daemon program;
Described virtual machine is monitored the LLDP protocol massages in the network, to obtain the LLDP protocol massages of switch;
Described virtual machine is resolved this LLDP protocol massages, obtaining the port parameter of the switch in the described LLDP protocol massages, and sends to the coordinator.
Existing LLDP protocol massages, can with local terminal equipment information such as main ability, management address, device identification, interface identifier be encapsulated in issue among the LLDPDU (Link Layer Discovery Protocol Data Unit, Link Layer Discovery Protocol data cell).Therefore the virtual machine in the embodiment of the invention can be known the port parameter of switch by resolving this LLDP protocol massages.
Wherein, step 202 can specifically comprise:
Described Orchestrator sends request to vCenter, with the port parameter of acquisition request vSwitch;
VCenter sends to Orchestrator with the port parameter of vSwitch.
Usually, the port parameter of virtual switch is stored among the vCenter, so Orchestrator can be by sending the port parameter that request mode is obtained vSwitch to vCenter.
In one embodiment of the invention, can only obtain the port parameter of the uplink port of vSwitch.Uplink port is meant that vSwitch connects the port of switch.
Wherein, behind the port parameter of the node in obtaining network, this network topology can be generated in several ways in the prior art, for example, the mode of common MIB (Management Information Base, management information bank) can be adopted.In the network topology of existing MIB mode, data object is a tree hierarchy.The branch of structure tree is represented the logic groups of data object; And the node representative data object in the branch.Like this can be by the MIB browser to represent each branch and node with the form of graphical display.Certainly, this just illustrates, and generating the mode of network topology according to the port parameter of node in the network in the prior art can be for multiple, and the embodiment of the invention is not made qualification to this.
Can monitor the LLDP message by the LLDP Daemon of virtual machine in the embodiment of the invention, need not to develop new application program to save development cost.Simultaneously, can obtain the port parameter of vSwitch, generate the required overhead of network topology to reduce by vCenter.
Embodiment 3
Third embodiment of the invention has proposed a kind of coordinator, and its structure comprises as shown in Figure 3:
Network topology generation module 303 is used for generating network topology by the port parameter of described switch and the port parameter of described virtual switch.
The embodiment of the invention can receive the message of the link layer of snooping switch by virtual machine, and obtains the port parameter of vSwitch, to generate network topology.Need not in the embodiment of the invention vSwitch and switch are made improvement, can obtain the port parameter of switch and virtual switch, to generate network topology.Like this can be so that management, and can make things convenient for the transmission of various application's data.The message of monitored link layer need not virtual machine and makes complex calculations and storage.
Embodiment 4
Fourth embodiment of the invention has proposed a kind of coordinator, is to improve on the basis of the 3rd embodiment.The coordinator comprises:
Wherein, receiver module 301 specifically can be used to receive the port parameter of the switch that the link layer message of described virtual machine by Link Layer Discovery Protocol demons (LLDPDaemon) snooping switch obtain.
Wherein, this virtual machine can generate by vCenter, and this virtual machine operation LLDP Daemon program is to monitor the LLDP protocol massages in the network, to obtain the LLDP protocol massages of switch.This virtual machine can also be resolved this LLDP protocol massages, to obtain the port parameter of the switch in the described LLDP protocol massages.
Wherein, acquisition module 302 specifically can be used for obtaining from the virtualized server webmaster port parameter of the uplink port of described virtual switch.
Network topology generation module 303 is used for generating network topology by the port parameter of described switch and the port parameter of described virtual switch.
Can monitor the LLDP message by existing LLDP Daemon in the embodiment of the invention, need not to develop new application program to save development cost.Simultaneously, can obtain the port parameter of vSwitch, generate the required overhead of network topology to reduce by vCenter.
Need to prove: the above-mentioned the 3rd, the 4th executes example only is illustrated with the division of above-mentioned each functional module, in the practical application, can as required the above-mentioned functions distribution be finished by different functional modules, the internal structure that is about to device is divided into different functional modules, to finish all or part of function described above.The method that above-mentioned the 3rd, the 4th embodiment and first, second embodiment propose belongs to same design; Therefore same section repeats no more.
Embodiment 5
Fifth embodiment of the invention has proposed a kind of virtual machine, and its structure comprises as shown in Figure 4:
Sending module 402 is used for described port parameter is sent to the coordinator, so that described coordinator generates network topology.
The embodiment of the invention can receive the message of the link layer of snooping switch by virtual machine, and obtains the port parameter of vSwitch, to generate network topology.Need not in the embodiment of the invention vSwitch and switch are made improvement, can obtain the port parameter of switch and virtual switch, to generate network topology.Like this can be so that management, and can make things convenient for the transmission of various application's data.The message of monitored link layer need not virtual machine and makes complex calculations and storage.
Embodiment 6
Sixth embodiment of the invention has proposed a kind of virtual machine, is to improve on the basis of the 5th embodiment, and its structure comprises as shown in Figure 5:
Sending module 402 is used for described port parameter is sent to the coordinator, so that described coordinator generates network topology.
Wherein, the message of this link layer is the LLDP protocol massages.Then monitoring module 401 can specifically comprise:
Demons unit 4011 is used for the Link Layer Discovery Protocol message by LLDP Daemon snooping switch;
Resolution unit 4012 is used to resolve described Link Layer Discovery Protocol message, to obtain the port parameter of switch.
Virtual machine in the embodiment of the invention both can be arranged in the server, or described virtual machine is arranged in the outside sharing and storing device, and described outside sharing and storing device is by the network connection service device.
Can monitor the LLDP message by existing LLDP Daemon in the embodiment of the invention, need not to develop new application program to save development cost.
Need to prove: above-mentioned the 5th, the 6th embodiment only is illustrated with the division of above-mentioned each functional module, in the practical application, can as required the above-mentioned functions distribution be finished by different functional modules, the internal structure that is about to device is divided into different functional modules, to finish all or part of function described above.The method that above-mentioned the 5th, the 6th embodiment and first, second embodiment propose belongs to same design; Therefore same section repeats no more.
Embodiment 7
Seventh embodiment of the invention has proposed a kind of network topology generation system, and its structure can comprise as shown in Figure 6: virtualized server webmaster 501, coordinator 502 and server 505.
When realizing the embodiment of the invention, can realize by equipment as shown in Figure 7.As shown in Figure 7, the server 505, the switch 506 that comprise vCenter501, Orchestrator502, operation virtual machine 503 and virtual switch 504.The server 505 that wherein moves virtual machine 503 and virtual switch 504 is connected switch 506, and vCenter501 connects this server 505, and Orchestrator502 connects switch 506 and vCenter501 respectively.
Described virtualized server webmaster 501 is used to make server 505 to generate described virtual machine 503;
Described server 505 is used to generate virtual machine 503, and the message of the link layer of described virtual machine 503 snooping switch obtains the port parameter of switch;
Described coordinator 502 is used for obtaining from described virtualized server webmaster 501 port parameter of virtual switch 504, and obtains the port parameter of switch 506 from described virtual machine 503, generates network topology.
The embodiment of the invention can receive the message of the link layer of snooping switch by virtual machine, and obtains the port parameter of vSwitch, to generate network topology.Need not in the embodiment of the invention vSwitch and switch are made improvement, can obtain the port parameter of switch and virtual switch, to generate network topology.Like this can be so that management, and can make things convenient for the transmission of various application's data.The message of monitored link layer need not virtual machine and makes complex calculations and storage, be easy to increase a virtual machine simultaneously in existing dummy machine system, so cost is low.
Embodiment 8
Sixth embodiment of the invention has proposed a kind of network topology generation system, is to improve on the basis of the 7th embodiment, comprising: virtualized server webmaster 501, coordinator 502 and server 505.
Described virtualized server webmaster 501 is used to make server 505 to generate described virtual machine 503;
Described server 505 is used to generate virtual machine 503, and the message of the link layer of described virtual machine 503 snooping switch obtains the port parameter of switch;
Described coordinator 502 is used for obtaining from described virtualized server webmaster the port parameter of virtual switch, and obtains the port parameter of switch from described virtual machine 503, generates network topology.
Wherein, the message of described link layer can be the Link Layer Discovery Protocol message.Then described virtual machine 503 specifically can be used to move the Link Layer Discovery Protocol demons, with the Link Layer Discovery Protocol message of snooping switch; And resolve link layer and find that protocol massages is to obtain the port parameter of switch.
Can monitor the LLDP message by existing LLDP Daemon in the embodiment of the invention, need not to develop new application program to save development cost.
Need to prove: above-mentioned the 7th, the 8th embodiment only is illustrated with the division of above-mentioned each functional module, in the practical application, can as required the above-mentioned functions distribution be finished by different functional modules, the internal structure that is about to device is divided into different functional modules, to finish all or part of function described above.The method that above-mentioned the 7th, the 8th embodiment and first, second embodiment propose belongs to same design; Therefore same section repeats no more.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a network topology generation method is characterized in that, comprising:
Obtain the port parameter of switch from virtual machine, described port parameter is that described virtual machine obtains by the link layer message of monitoring described switch;
Obtain the port parameter of the virtual switch that is connected with described switch;
Generate network topology according to the port parameter of described switch and the port parameter of described virtual switch.
2. method according to claim 1, it is characterized in that described link layer message is that linking layer is found protocol massages, the described port parameter that obtains switch from virtual machine, described port parameter is that described virtual machine obtains by the link layer message of monitoring described switch, specifically comprises:
Obtain the port parameter of switch from described virtual machine;
Described port parameter is that described virtual machine passes through the Link Layer Discovery Protocol demons, after the linking layer that the described switch that listens to sends is found protocol massages, resolves the port parameter of the described switch that obtains.
3. method according to claim 1 is characterized in that, the described port parameter that obtains virtual switch comprises:
Obtain the port parameter of the uplink port of described virtual switch from the virtualized server webmaster.
4. a coordinator is characterized in that, comprising:
Receiver module is used for obtaining from virtual machine the port parameter of switch, and described port parameter is that described virtual machine obtains by the link layer message of monitoring described switch;
Acquisition module is used to obtain the port parameter of the virtual switch that is connected with described switch;
The network topology generation module is used for generating network topology by the port parameter of described switch and the port parameter of described virtual switch.
5. coordinator according to claim 4 is characterized in that, described receiver module specifically is used for: the port parameter that receives the switch that the link layer message of described virtual machine by Link Layer Discovery Protocol demons snooping switch obtain.
6. coordinator according to claim 4 is characterized in that, described acquisition module specifically is used for: the port parameter that obtains the uplink port of described virtual switch from the virtualized server webmaster.
7. a network topology generation system is characterized in that, comprising: virtualized server webmaster, coordinator and server;
Described virtualized server webmaster is used to make described server to generate described virtual machine;
Described server is used to generate virtual machine, and the message of the link layer of described virtual machine snooping switch obtains the port parameter of switch;
Described coordinator is used for obtaining from described virtualized server webmaster the port parameter of virtual switch, and obtains the port parameter of switch from described virtual machine, generates network topology.
8. network topology generation system according to claim 7 is characterized in that, the message of described link layer can be the Link Layer Discovery Protocol message; Described virtual machine specifically can be used to move the Link Layer Discovery Protocol demons, with the Link Layer Discovery Protocol message of snooping switch; And resolve link layer and find that protocol massages is to obtain the port parameter of switch.
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