CN102231708A - Virtual routing device and routing method thereof - Google Patents
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Abstract
The invention discloses a virtual routing device and a routing method thereof and relates to the technical field of an internet. The device disclosed by the invention comprises programmable hardware and a host, wherein the programmable hardware is used for achieving the data packet transmission function of a data plane; the host achieves the functions of a control plane and a management plane and comprises a host control unit and a virtual machine unit; the host control unit is used for initializing the programmable hardware and the virtual machine unit and periodically updating the items in the programmable hardware; and the virtual machine unit is used for achieving the functions of processing route protocols and processing data packets, generating and updating a route table and an ARP (Address Resolution Protocol) table in real time and providing the route table and the ARP table for the host control unit. In the invention, multiple parallel virtual networks can be simultaneously supported to operate different applications; the established different virtual networks can be completely isolated and are not mutually interfered; the forwarding rate is high and can reach the linear speed; and the device provided by the invention also has the characteristics of programmable depth, flexibility in configuration and good expansibility.
Description
Technical Field
The present invention relates to the field of internet technologies, and in particular, to a virtual routing apparatus and a routing method thereof.
Background
The internet has enjoyed significant success during the past decades of production and development. Based on the internet, more and more users, more and more applications, and more services are emerging. However, and because of the popularity of the internet, it is increasingly showing inconsistencies in the original design, inherent disadvantages and emerging drawbacks. Therefore, a plurality of scholars join in the future internet research to generate a series of research results. However, most of the research results are based on the modification of the original internet architecture, and the inherent stubborn problems are not effectively solved. Other research efforts have involved a thorough innovation in the internet, but unfortunately none have been an effective large-scale platform to verify its correctness.
Therefore, future research on the internet urgently needs an experimental platform capable of supporting parallel network innovation. The innovative experiment platform can carry out various innovative researches and experiments on the internet in parallel without influencing the current network, and does not influence each other. The network virtualization technology allows a plurality of virtual networks to be operated simultaneously and parallelly on the same underlying network resource, and is considered to be an important and effective technology for building a future innovative network experimental platform. The network virtualization simulates a plurality of virtual networks on the same underlying physical network through a node virtualization technology and a link virtualization technology, thereby providing different services and running different protocols and applications. For example, different virtual networks may run distinct applications: VoIP, video on demand, multicast, file sharing, etc.
As a core device of network virtualization: the research on the virtual router is particularly important. In the past research efforts, there were two solutions for virtual routers: the first solution is a software-based virtual router, which is characterized by flexible configuration and strong programmability, but the software virtual router has a bottleneck that is difficult to overcome: the forwarding rate is low because its forwarding function is implemented by software. The second solution is a hardware-based virtual router, which is characterized by high forwarding rate, even wire speed, but its flexibility and configurability are hard to be compared with a software virtual router. In addition, the current research results on the hardware virtual router have certain defects in isolation, and the planes cannot be completely isolated.
The functional architecture of the router mainly comprises a control plane, a data plane and a management plane, so that the design of the virtual router needs to comprehensively consider the characteristics and performance requirements among the planes. Meanwhile, the advantages and the disadvantages of the software virtual router and the hardware virtual router are considered, and the high-performance virtual router is finally realized.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: a virtual routing device and a routing method thereof are provided, which can simultaneously support a plurality of parallel virtual networks to run different applications; the established different virtual networks can be completely isolated and do not influence each other; the forwarding speed is high, and the linear speed can be achieved; the invention also has the characteristics of programmable depth, flexible configuration and good expansibility.
(II) technical scheme
In order to solve the above problems, the present invention provides a virtual routing device, which includes programmable hardware and a host; wherein,
the programmable hardware is used for completing a data packet forwarding function of a data plane;
the host is used for completing functions of a control plane and a management plane and comprises a host control unit and a plurality of virtual machine units;
the host control unit is used for managing and controlling the data plane and the virtual machine unit and periodically updating a routing table and an ARP table in the data plane;
the virtual machine unit is used for realizing the functions of routing protocol processing and data packet processing, generating a routing table and an ARP table in real time and providing the routing table and the ARP table to the host control unit.
The data plane comprises a data packet forwarding control module in the programmable hardware, and a routing table, an ARP table and a port table which are stored in a register, and the data plane corresponds to the virtual machine units one by one.
The control plane comprises a management configuration module in the host control unit, a routing protocol module and a data packet processing module in the virtual machine unit.
The virtual machine unit comprises N virtual network cards which are respectively bridged to N CPU queues of the programmable hardware. N is a natural number.
Wherein the programmable hardware is an FPGA.
A method for performing virtual routing by using the virtual routing device, comprising the following steps:
s1: the host control unit carries out initialization configuration on the programmable hardware through a PCI interface and generates a virtual machine unit corresponding to a data plane in the programmable hardware;
s2: the virtual machine unit processes the received data packet, and generates and updates a routing table and an ARP table in real time;
s3: the host control unit periodically updates a routing table and an ARP table generated in the virtual machine unit into a data plane through a timer;
s4: the programmable hardware forwards the received data packet.
Wherein, the step S4 further includes determining the format of the data packet;
for the data packet in the VLAN format, firstly, the data packet is filtered through the VLAN tag, then the data packet matched with the VLAN tag is sent to a data plane corresponding to the tag, and the data packet not matched with the VLAN tag is discarded;
filtering according to the destination MAC address after the data packet enters the data plane; and for the data packet matched with the MAC address, searching a next hop IP address and a corresponding port from the routing table and the ARP table according to the destination IP address, if so, forwarding, otherwise, sending the data packet to a corresponding virtual machine unit through a CPU queue for processing.
(III) advantageous effects
The invention combines programmable hardware and host virtualization technology, and adopts VLAN isolation technology on data plane, thus being capable of supporting multiple parallel virtual networks on the same bottom layer physical network and having good isolation characteristic. The data packet forwarding is carried out through the programmable hardware (FPGA), so that the forwarding speed is high, and the linear speed forwarding can be achieved. The invention has deep programmability because of adopting the host virtualization technology and the programmable hardware in the control plane, the host virtualization technology generates mutually isolated virtual machines, each virtual machine can select different routing protocols according to different application scenes, and meanwhile, the data packet processing flow in the programmable hardware (FPGA) is highly programmable. The host control unit of the invention can adjust the configuration strategy, the table item updating strategy, the virtual node resource allocation strategy and the like according to the needs.
Drawings
FIG. 1 is a block diagram of a virtual router according to an embodiment of the present invention;
fig. 2 is a flowchart of the virtual routing method according to the embodiment of the present invention;
fig. 3 is a flow chart of data forwarding of the programmable hardware according to the embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1, the virtual routing apparatus according to the present invention includes programmable hardware, such as an FPGA and a host; wherein,
the programmable hardware, such as an FPGA, is used to complete a packet forwarding function of a data plane; the data plane comprises the programmable hardware, such as a data packet forwarding control module in the FPGA, and a routing table, an ARP table and a port table which are stored in a register, and the data plane corresponds to the virtual machine units one by one; the data plane includes: a general data plane and a VLAN data plane;
the host is used for completing functions of a control plane and a management plane and comprises a host control unit and a plurality of virtual machine units; the control plane comprises a management configuration module in the host control unit, a routing protocol module and a data packet processing module in the virtual machine unit;
the host control unit is used for managing and controlling the data plane and the virtual machine unit and periodically updating a routing table and an ARP table in the data plane;
the virtual machine unit is used for realizing the functions of routing protocol processing and data packet processing, generating a routing table and an ARP table in real time and providing the routing table and the ARP table to the host control unit; the virtual machine unit comprises N virtual network cards, and the N virtual network cards are respectively bridged to N CPU queues of the programmable hardware through a network bridge. The bridge is established by a management configuration module. Wherein N is a natural number.
As shown in fig. 2, the method for performing virtual routing by using the virtual routing apparatus according to the present invention includes the following steps:
s1: the host control unit performs initialization configuration on programmable hardware such as FPGA through a PCI interface and generates a virtual machine unit corresponding to a data plane in the programmable hardware;
s2: the virtual machine unit processes the received data packet, and generates and updates a routing table and an ARP table in real time;
s3: the host control unit periodically updates a routing table and an ARP table generated in the virtual machine unit into a data plane through a timer;
s4: programmable hardware, such as an FPGA, forwards received packets.
In this step, the data forwarding flow of the programmable hardware is as shown in fig. 3, and the format of the data packet is first determined;
for the data packet in the VLAN format, firstly, the data packet is filtered through the VLAN tag, then the data packet matched with the VLAN tag is sent to a data plane corresponding to the tag, and the data packet not matched with the VLAN tag is discarded;
filtering according to the destination MAC address after the data packet enters the data plane; and for the data packet matched with the MAC address, searching a next hop IP address and a corresponding port from the routing table and the ARP table according to the destination IP address, if so, forwarding, otherwise, sending the data packet to a corresponding virtual machine unit through a CPU queue for processing.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (7)
1. A virtual routing apparatus comprising programmable hardware and a host; wherein,
the programmable hardware is used for completing a data packet forwarding function of a data plane;
the host is used for completing functions of a control plane and a management plane and comprises a host control unit and a plurality of virtual machine units;
the host control unit is used for managing and controlling the data plane and the virtual machine unit and periodically updating a routing table and an ARP table in the data plane;
the virtual machine unit is used for realizing the functions of routing protocol processing and data packet processing, generating a routing table and an ARP table in real time and providing the routing table and the ARP table to the host control unit.
2. The virtual routing apparatus of claim 1, wherein the data plane comprises a packet forwarding control module in the programmable hardware, and a routing table, an ARP table, and a port table stored in a register, and the data plane corresponds to the virtual machine units one to one.
3. The virtual routing apparatus of claim 1, wherein the control plane comprises a management configuration module in the host control unit and a routing protocol module and a packet processing module in the virtual machine unit.
4. The virtual routing device of claim 1, wherein the virtual machine unit comprises N virtual network cards that respectively bridge to N CPU queues of the programmable hardware.
5. The virtual routing apparatus of claim 1, wherein the programmable hardware is an FPGA.
6. A method for virtual routing using the virtual routing apparatus of any of claims 1-5, comprising the steps of:
s1: the host control unit carries out initialization configuration on the programmable hardware through a PCI interface and generates a virtual machine unit corresponding to a data plane in the programmable hardware;
s2: the virtual machine unit processes the received data packet, and generates and updates a routing table and an ARP table in real time;
s3: the host control unit periodically updates a routing table and an ARP table generated in the virtual machine unit into a data plane through a timer;
s4: the programmable hardware forwards the received data packet.
7. The virtual routing method according to claim 6, wherein the step S4 further includes determining a format of the packet;
for the data packet in the VLAN format, firstly, the data packet is filtered through the VLAN tag, then the data packet matched with the VLAN tag is sent to a data plane corresponding to the tag, and the data packet not matched with the VLAN tag is discarded;
filtering according to the destination MAC address after the data packet enters the data plane; and for the data packet matched with the MAC address, searching a next hop IP address and a corresponding port from the routing table and the ARP table according to the destination IP address, if so, forwarding, otherwise, sending the data packet to a corresponding virtual machine unit through a CPU queue for processing.
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Cited By (15)
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| CN103001883A (en) * | 2012-12-17 | 2013-03-27 | 重庆邮电大学 | Internal communication method of programmable virtual router based on Net field programmable gate array (FPGA) |
| CN103024028A (en) * | 2012-12-07 | 2013-04-03 | 武汉邮电科学研究院 | Virtual machine IP (Internet Protocol) address detection system and method in cloud computing |
| CN103259735A (en) * | 2013-05-15 | 2013-08-21 | 重庆邮电大学 | Communication method of programmable virtualized router based on NetFPGA |
| CN103309725A (en) * | 2013-05-20 | 2013-09-18 | 深圳市京华科讯科技有限公司 | Network virtualized processing method |
| CN103685041A (en) * | 2012-09-04 | 2014-03-26 | 清华大学 | Programmable router and routing method based on bit granularity |
| WO2015196761A1 (en) * | 2014-06-27 | 2015-12-30 | 中兴通讯股份有限公司 | Method and device for testing forwarding performance of cpu |
| CN105323161A (en) * | 2015-12-09 | 2016-02-10 | 武汉烽火网络有限责任公司 | Method and system for implementing virtualization router based on Windows platform |
| CN105407045A (en) * | 2015-10-19 | 2016-03-16 | 国家电网公司 | Router virtualization method based on safety isolation |
| CN106575427A (en) * | 2014-08-12 | 2017-04-19 | 艾高特有限责任公司 | A zero-knowledge environment based social networking engine |
| CN108632070A (en) * | 2017-03-23 | 2018-10-09 | 华为技术有限公司 | The configuration method and server of virtual network device |
| CN109861898A (en) * | 2019-01-28 | 2019-06-07 | 伟乐视讯科技股份有限公司 | A kind of method and its equipment for realizing data isolation based on FPGA |
| CN110798412A (en) * | 2019-10-18 | 2020-02-14 | 北京浪潮数据技术有限公司 | Multicast service processing method, device, cloud platform, equipment and readable storage medium |
| CN111092770A (en) * | 2019-12-23 | 2020-05-01 | 联想(北京)有限公司 | Virtual network management method and electronic equipment |
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Cited By (27)
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| CN103685041A (en) * | 2012-09-04 | 2014-03-26 | 清华大学 | Programmable router and routing method based on bit granularity |
| CN103685041B (en) * | 2012-09-04 | 2017-04-19 | 清华大学 | Programmable router and routing method based on bit granularity |
| CN103024028A (en) * | 2012-12-07 | 2013-04-03 | 武汉邮电科学研究院 | Virtual machine IP (Internet Protocol) address detection system and method in cloud computing |
| CN103024028B (en) * | 2012-12-07 | 2015-05-13 | 武汉邮电科学研究院 | Virtual machine IP (Internet Protocol) address detection system and method in cloud computing |
| CN103001883B (en) * | 2012-12-17 | 2015-07-15 | 重庆邮电大学 | Internal communication method of programmable virtual router based on Net field programmable gate array (FPGA) |
| CN103001883A (en) * | 2012-12-17 | 2013-03-27 | 重庆邮电大学 | Internal communication method of programmable virtual router based on Net field programmable gate array (FPGA) |
| CN103259735B (en) * | 2013-05-15 | 2016-05-11 | 重庆邮电大学 | A kind of communication means of the programmable virtual router based on NetFPGA |
| CN103259735A (en) * | 2013-05-15 | 2013-08-21 | 重庆邮电大学 | Communication method of programmable virtualized router based on NetFPGA |
| CN103309725A (en) * | 2013-05-20 | 2013-09-18 | 深圳市京华科讯科技有限公司 | Network virtualized processing method |
| WO2015196761A1 (en) * | 2014-06-27 | 2015-12-30 | 中兴通讯股份有限公司 | Method and device for testing forwarding performance of cpu |
| CN106575427A (en) * | 2014-08-12 | 2017-04-19 | 艾高特有限责任公司 | A zero-knowledge environment based social networking engine |
| US11128466B2 (en) | 2014-08-12 | 2021-09-21 | Eingot Llc | Zero-knowledge environment based social networking engine |
| US12058266B2 (en) | 2014-08-12 | 2024-08-06 | Eingot Llc | Zero-knowledge environment based social networking engine |
| US11637703B2 (en) | 2014-08-12 | 2023-04-25 | Eingot Llc | Zero-knowledge environment based social networking engine |
| CN106575427B (en) * | 2014-08-12 | 2020-12-08 | 艾高特有限责任公司 | Social network engine based on zero-knowledge environment |
| US10693647B2 (en) | 2014-08-12 | 2020-06-23 | Eingot Llc | Zero-knowledge environment based social networking engine |
| CN105407045A (en) * | 2015-10-19 | 2016-03-16 | 国家电网公司 | Router virtualization method based on safety isolation |
| CN105323161B (en) * | 2015-12-09 | 2018-10-09 | 武汉烽火网络有限责任公司 | The method and system of realization virtualization router based on windows platform |
| CN105323161A (en) * | 2015-12-09 | 2016-02-10 | 武汉烽火网络有限责任公司 | Method and system for implementing virtualization router based on Windows platform |
| CN108632070B (en) * | 2017-03-23 | 2020-04-28 | 华为技术有限公司 | Configuration method of virtual network equipment and server |
| CN108632070A (en) * | 2017-03-23 | 2018-10-09 | 华为技术有限公司 | The configuration method and server of virtual network device |
| US11399079B2 (en) | 2018-02-14 | 2022-07-26 | Eingot Llc | Zero-knowledge environment based networking engine |
| CN109861898A (en) * | 2019-01-28 | 2019-06-07 | 伟乐视讯科技股份有限公司 | A kind of method and its equipment for realizing data isolation based on FPGA |
| CN110798412A (en) * | 2019-10-18 | 2020-02-14 | 北京浪潮数据技术有限公司 | Multicast service processing method, device, cloud platform, equipment and readable storage medium |
| CN111092770A (en) * | 2019-12-23 | 2020-05-01 | 联想(北京)有限公司 | Virtual network management method and electronic equipment |
| CN111092770B (en) * | 2019-12-23 | 2021-09-14 | 联想(北京)有限公司 | Virtual network management method and electronic equipment |
| CN112988330A (en) * | 2021-03-24 | 2021-06-18 | 江苏天翼安全技术有限公司 | Method and system for establishing virtual machine by designating ip address |
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Application publication date: 20111102 |