CN110635924B - SDN network virtualization subnet management system and method - Google Patents
SDN network virtualization subnet management system and method Download PDFInfo
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Abstract
An SDN network virtualization subnet management system, the system comprising a network resource management unit, configured to acquire and store domain-division multi-level network data, where the network data includes domain networking information and domain device-related information; the user demand management unit is used for acquiring and storing subnet demand information of a user, wherein the user subnet demand information comprises user attribute information and domain information of a demand subnet; and the link splitting unit is used for acquiring the junction equipment of the two end domains and the upper domain of the sub-network required by the user in the network according to the domain information of the sub-network required by the user in the user requirement management unit and the domain networking information in the network resource management unit, selecting the corresponding junction equipment in the domain according to the networking information of the upper domain to connect into a link, and determining the bandwidth of the link. And the instruction issuing unit is used for issuing an instruction to equipment corresponding to the link according to the link obtained by the link segmentation unit. The application also discloses an SDN network virtualization subnet management method.
Description
Technical Field
The present application relates to SDN network management, and more particularly, to network virtualization subnet management techniques.
Background
The development of each industry informatization requires telecom operators to provide subnet services, namely, a plurality of users are simultaneously provided with services in the same physical network, and the users have no perception to other users, but the technology for flexibly configuring virtual subnets in the physical network is in a missing state, so how to manage and configure the virtual subnets is a problem to be solved.
Disclosure of Invention
The application provides an SDN network virtualization subnet management system, which comprises the following technical scheme:
the network resource management unit is used for acquiring and storing domain-division multi-level network data, wherein the network data comprises domain networking information and domain equipment related information;
the user demand management unit is used for acquiring and storing subnet demand information of a user, wherein the user subnet demand information comprises user attribute information and domain information of a demand subnet;
the link splitting unit is used for acquiring hub devices of two end domains and an upper domain of a subnet required by a user in a network according to domain information of the subnet required by the user in the user requirement management unit and domain networking information in the network resource management unit, selecting corresponding hub devices in the domain according to the networking information of the upper domain to be connected into a link, and determining the bandwidth of the link;
and the instruction issuing unit is used for issuing an instruction to equipment corresponding to the link according to the link obtained by the link segmentation unit.
Preferably:
the networking information of the domain comprises a domain identifier, a domain hierarchy, a domain networking mode and an upper-level domain identifier;
the device related information of the domain comprises a device identifier, a device level, a domain identifier of the device, a device link, a port and bandwidth information;
the user attribute information comprises a user identifier;
the domain information of the demand subnet includes a domain identification, a domain hierarchy and a domain bandwidth.
Specifically, the link splitting unit further includes:
the hub equipment determining module is used for acquiring the domain in the network resource management unit corresponding to the domain information of the required subnet, determining the two end domains and the upper domain of the subnet required by the user in the network according to the acquired networking information of the domain, and determining the hub equipment of the two end domains and the upper domain according to the equipment levels of the two end domains and the upper domain;
and the link determining module is used for selecting the junction equipment of the two end domains and/or the upper domain to be connected to form a link according to the networking information of the upper domain.
Preferably:
and the link bandwidth determined by the link determination module is the bandwidth accumulation of the equipment with the same two ends.
Specifically, the link determination module further includes:
the networking judging module judges that the networking mode of the upper domain is tree networking or point-to-point networking;
the connection module is used for selecting the junction devices of the two end domains to be respectively connected with the junction devices of the upper domain to obtain two links according to the tree-shaped networking judgment result of the networking judgment module; and selecting the hub equipment of the two end domains to be directly connected to obtain a link according to the point-to-point networking judgment result of the networking judgment module.
The application also discloses an SDN network virtualization subnet management method, which is characterized by comprising the following steps:
acquiring and storing domain-separated multi-level network data, wherein the network data comprises domain networking information and domain equipment related information;
acquiring and storing subnet demand information of a user, wherein the user subnet demand information comprises user attribute information and domain information of a demand subnet;
acquiring hub devices of two end domains and an upper domain of a subnet required by a user in a network according to domain information required by the subnet of the user and the stored domain networking information, selecting corresponding hub devices in the domain to be connected into a link according to the networking information of the upper domain, and determining the bandwidth of the link;
according to the obtained link, an instruction is issued to equipment corresponding to the link
Preferably:
the networking information of the domain comprises a domain identifier, a domain hierarchy, a domain networking mode and an upper-level domain identifier;
the device related information of the domain comprises a device identifier, a device level, a domain identifier of the device, a device link, a port and bandwidth information;
the user attribute information comprises a user identifier;
the domain information of the demand subnet includes a domain identification, a domain hierarchy and a domain bandwidth.
Specifically, the acquiring, according to the domain information required by the user subnet and the stored domain networking information, the hub devices of the two end domains and the upper domain of the subnet required by the user in the network, and selecting, according to the networking information of the upper domain, the corresponding hub devices in the domain to connect into a link specifically includes:
acquiring the stored domain corresponding to the domain information of the user demand subnet, determining two end domains and an upper domain of the user demand subnet in a network according to the acquired networking information of the domain, and determining hub equipment of the two end domains and the upper domain according to equipment levels of the two end domains and the upper domain;
and selecting the junction equipment of the two end domains and/or the upper domain to be connected to form a link according to the networking information of the upper domain.
Further, determining the bandwidth of the link specifically includes:
the determined link bandwidth is the bandwidth accumulation of the same equipment at both ends.
Further, according to the networking information of the upper domain, the link is specifically formed by selecting the connection of the two end domains and/or the hub devices of the upper domain:
judging that the networking mode of the superior domain is tree networking or point-to-point networking;
according to the judgment result of the tree networking, selecting the junction devices of the two end domains to be respectively connected with the junction devices of the upper domain to obtain two links; and selecting the hub equipment of the two end domains to carry out direct connection to obtain a link according to the judging result of the point-to-point networking.
According to the technical scheme, on the basis of physical network domain division multi-level modeling, the user sub-network is divided into a plurality of user links according to the user access point positions and the user communication requirements, and SDN network virtualization sub-network management systems and methods for configuring the user links on the equipment to meet the user sub-network communication requirements are provided. The telecom operator can flexibly provide the subnet communication service for industry users in the physical network.
Drawings
In order to more clearly illustrate the embodiments of the application 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, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an SDN network virtualization subnet management system according to an embodiment of the application;
fig. 2 is a schematic diagram of a system structure according to a second embodiment of the present application;
fig. 3 is a flow chart of a method for managing a virtualized subnet of an SDN network according to a fourth embodiment of the application;
fig. 4 is a flow chart of a method according to a fifth embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an SDN network virtualization subnet management system according to an embodiment of the application, where the system may include:
and the network resource management unit 01 is used for acquiring and storing domain-division multi-level network data, wherein the network data comprises domain networking information and domain equipment related information.
The networking information of the domain comprises a domain identifier, a domain hierarchy, a domain networking mode and an upper-level domain identifier.
The device related information of the domain comprises a device identifier, a device level, a domain identifier of the device, a device link, a port and bandwidth information.
A user requirement management unit 02, configured to obtain and store subnet requirement information of a user, where the subnet requirement information includes user attribute information and domain information of a requirement subnet.
The user attribute information includes a user identification.
The domain information of the demand subnet includes a domain identification, a domain hierarchy and a domain bandwidth.
The link splitting unit 03 is configured to obtain, according to the domain information of the required subnet in the user requirement management unit and the domain networking information in the network resource management unit, hub devices of two end domains and an upper domain in the network of the subnet required by the user, select, according to the networking information of the upper domain, corresponding hub devices in the domain to connect into a link, and determine a bandwidth of the link.
And the instruction issuing unit 04 is used for issuing an instruction to equipment corresponding to the link according to the link obtained by the link segmentation unit.
Referring to fig. 2, fig. 2 is a schematic diagram of a second embodiment of the present application, which is used to illustrate a specific structure of the link splitting unit.
And the network resource management unit 01 is used for acquiring and storing domain-division multi-level network data, wherein the network data comprises domain networking information and domain equipment related information.
A user requirement management unit 02, configured to obtain and store subnet requirement information of a user, where the subnet requirement information includes user attribute information and domain information of a requirement subnet.
The link splitting unit 03 is configured to obtain, according to the domain information of the required subnet in the user requirement management unit and the domain networking information in the network resource management unit, hub devices of two end domains and an upper domain in the network of the subnet required by the user, select, according to the networking information of the upper domain, corresponding hub devices in the domain to connect into a link, and determine a bandwidth of the link.
The determined link bandwidth is the bandwidth accumulation of the same equipment at both ends.
The link splitting unit 03 further includes:
a junction device determining module 031, configured to obtain a domain in the network resource management unit corresponding to the domain information of the required subnet, determine, according to the obtained networking information of the domain, a two-end domain and an upper domain of the subnet required by the user in the network, and determine, according to device levels in the two-end domain and the upper domain, junction devices in the two-end domain and the upper domain;
and the link determining module 032 is used for selecting the junction equipment of the two end domains and/or the upper domain to be connected to form a link according to the networking information of the upper domain.
The link determination module 032 further comprises:
the networking determination module 0321 determines that the networking mode of the upper domain is tree networking or point-to-point networking.
The connection module 0322 selects the junction devices of the two end domains to be respectively connected with the junction devices of the upper domain to obtain two links according to the tree-shaped networking judgment result of the networking judgment module; and selecting the hub equipment of the two end domains to be directly connected to obtain a link according to the point-to-point networking judgment result of the networking judgment module.
To further illustrate the principles of operation of the system of the present application, a third embodiment of the present application is provided below in conjunction with the examples.
The network resource management unit receives externally input network resource data of the domain-separated multi-level modeling, as shown in table 3-1:
TABLE 3-1 network resource data schematic
| Domain identification | Domain hierarchy | Intra-domain networking mode | Coverage area identification | Superior domain identification |
| National domain | 0 | Point-to-point networking | Nationwide | |
| Overseas area | 1 | Tree pile networking | Shanghai | National domain |
| Beijing domain | 1 | Tree pile networking | Beijing | National domain |
| …… | …… | …… | …… | …… |
| Sea area | 2 | Tree pile networking | Sea area | Beijing domain |
| Western city region | 2 | Tree pile networking | Western urban area | Beijing domain |
| …… | …… | …… | …… | …… |
| Ying Fu Yuan (Yishan Ying Fu) | 3 | Tree pile networking | Ying Fu mountain | Sea area |
| Finance street area | 3 | Tree pile networking | Finance street | Western city region |
| …… | …… | …… | …… | …… |
There are two intra-domain networking modes: point-to-point networking and tree networking.
The device identification, device attribute, domain identification information are shown in table 3-2:
TABLE 3-2 schematic representation of device and domain related information
| Device identification | Device attributes | Domain identification |
| Equipment-Xishan Yingfu | Hinge device | Ying Fu Yuan (Yishan Ying Fu) |
| Equipment-finance street | Hinge device | Finance street area |
| …… | …… | …… |
| Equipment-sea area | Hinge device | Sea area |
| Equipment-Western urban area | Hinge device | Western city region |
| …… | …… | …… |
| Equipment-Beijing | Hinge device | Beijing domain |
| Equipment-Shanghai | Hinge device | Overseas area |
| …… | …… | …… |
The device attributes are: general equipment, hub equipment. If a device belongs to a hub device of a domain, the device also belongs to a superior domain of the domain.
The lowest domain has only one device, i.e. the device is also the hub device of the lowest domain.
TABLE 3-3 Link, device, port information schematic
| Link identification | Device identification | Port identification | Bandwidth of a communication device |
| Link Xishan Yingfu-hai lake | Equipment-Xishan Yingfu | Port 1 | 10G |
| Link Xishan Yingfu-hai lake | Equipment-sea area | Port 1 | 10G |
| …… | …… | …… | …… |
| Link finance street-western urban area | Equipment-finance street | Port 1 | 10G |
| Link finance street-western urban area | Equipment-Western urban area | Port 1 | 10G |
| …… | …… | …… | …… |
| Link sea lake-Beijing | Equipment-sea area | Port 2 | 50G |
| Link sea lake-Beijing | Equipment-Beijing | Port 2 | 50G |
| Link Xicheng-Beijing | Equipment-Western urban area | Port 2 | 50G |
| Link Xicheng-Beijing | Equipment-Beijing | Port 3 | 50G |
| …… | …… | …… | …… |
| Link Beijing-Shanghai | Equipment-Beijing | Port 1 | 100G |
| Link Beijing-Shanghai | Equipment-Shanghai | Port 1 | 100G |
| …… | …… | …… | …… |
The network resource management unit sends the data of tables 3-1 to 3-3 to the link splitting unit.
The user demand management unit receives a user subnet communication demand from outside:
TABLE 3-4 user subnet communication demand indication
| User identification | Zone 1 identification | Region(s)2 sign | Regional hierarchy | Bandwidth demand |
| User 1 | Beijing | Shanghai | 1 | 2G |
| …… | …… | …… | …… | …… |
| User 1 | Western urban area | Sea area | 2 | 1G |
| …… | …… | …… | …… | …… |
Regions 1 and 2 should be regions belonging to the same hierarchy of the same upper region.
TABLE 3-5 user zone schematic
| User identification | Area identification | Regional hierarchy | To superior regional bandwidth requirements |
| User 1 | Ying Fu mountain | 3 | 1G |
| …… | …… | …… | …… |
| User 1 | Sea area | 2 | 2G |
| …… | …… | …… | …… |
The area of user input should be the same as the area or device coverage area in the network resource model. In the link splitting unit:
1. firstly, according to the area 1 identification and the area 2 identification of the table 3-4, the corresponding two-end domain identifications and the networking modes of the upper domains of the two-end domain identifications are found from the table 3-1, and the hub devices in the two-end domain are found from the table 3-2. If the upper domain in the two end domains is point-to-point networking, the link is directly connected with the hub equipment of the two end domains; if the upper level domain in the two end domains is the tree networking, the links are two sections of links of the junction device of the two end domains respectively linked with the junction device of the upper level domain;
● User 1 needs a 2G link from beijing to the seas, beijing belonging to beijing domain and shanghai belonging to shanghai domain in table 3-1; the superior domain of Beijing domain/Shanghai domain is national domain, and the networking mode is point-to-point networking. The link is a hub device in the beijing/overseas domain: "Equipment-Beijing", "Equipment-Shanghai" are directly connected.
● User 1 needs a 1G link from the west city to the lake area, and in table 3-1 the west city belongs to the west city area and the lake area belongs to the lake area; the upper level region of the western city region/the sea lake region is Beijing region, and the networking mode is tree stake networking. The link is a hub device in the western region: "Equipment-Sedan district" to Pivot Equipment of Beijing area "equipment-Beijing", pivot Equipment of Beijing area "equipment-Beijing" to Pivot Equipment of sea lake district: a "device-lake region" two-segment link;
……
2. and then, according to the area identifications of the table 3-5, finding out the corresponding domain identifications and the upper-level domain identifications thereof from the table 3-1, and finding out the domain junction device and the upper-level domain junction device from the table 3-2, wherein the links are two devices which are directly connected.
● User 1 needs a 1G link from the win house to his upper level area. The corresponding domain identity is found from table 3-1: "Xishan Ying Fu Domain" and its superior domain identification: "sea area"; the hub devices found from table 3-2 are: "Equipment-Xishan Ying Fu", "Equipment-sea lake area"; the link is a direct connection of two devices.
● User 1 needs a 2G link from the starching area to its upper level area. The corresponding domain identity is found from table 3-1: "sea area" and its superior domain identification: "Beijing domain"; the hub devices found from table 3-2 are: "Equipment-sea lake area", "Equipment-Beijing"; the link is formed by directly connecting two devices
……
3. The bandwidths required for the connection of the devices with the same ends are accumulated.
The bandwidth requirements of the above-mentioned "device-lake district" to "device-beijing" are 1g+2g=3g.
4. Form the data of tables 3-6
Tables 3-6 user, device and Bandwidth information schematic
| User identification | Device 1 identification | Device 2 identification | Bandwidth demand |
| User 1 | Equipment-Beijing | Equipment-Shanghai | 2G |
| User 1 | Equipment-Western urban area | Equipment-Beijing | 1G |
| User 1 | Equipment-sea area | Equipment-Beijing | 3G |
| User 1 | Equipment-Xishan Yingfu | Equipment-sea area | 1G |
| …… | …… | …… | …… |
5. The corresponding device port is found from table 3-3 based on the device identification, as shown in tables 3-7.
Tables 3-7 user corresponding device Port schematic
The link splitting unit sends the data of tables 3-7 to the instruction issuing unit.
The instruction issuing unit generates a link establishment instruction of each device according to the data in tables 3-7 and issues the link establishment instruction to the corresponding device.
The application also discloses a fourth embodiment, as shown in fig. 3, of an SDN network virtualization subnet management method, comprising the following steps:
step S1: and acquiring and storing domain-separated multi-level network data, wherein the network data comprises domain networking information and domain equipment related information.
The networking information of the domain comprises a domain identifier, a domain hierarchy, a domain networking mode and an upper-level domain identifier.
The device related information of the domain comprises a device identifier, a device level, a domain identifier of the device, a device link, a port and bandwidth information.
Step S2: and acquiring and storing the subnet requirement information of the user, wherein the subnet requirement information of the user comprises user attribute information and domain information of a requirement subnet.
The user attribute information includes a user identification.
The domain information of the demand subnet includes a domain identification, a domain hierarchy and a domain bandwidth.
Step S3: and acquiring junction devices of two end domains and an upper domain of a subnet required by a user in a network according to the domain information required by the subnet of the user and the stored domain networking information, selecting corresponding junction devices in the domain to be connected into a link according to the networking information of the upper domain, and determining the bandwidth of the link.
The determined link bandwidth is the bandwidth accumulation of the same equipment at both ends.
Step S4: and according to the obtained link, transmitting an instruction to equipment corresponding to the link.
To further describe how the link splitting is performed, a second embodiment of the present application is given as shown in fig. 2.
Step S31: acquiring the stored domain corresponding to the domain information of the user demand subnet, determining two end domains and an upper domain of the user demand subnet in a network according to the acquired networking information of the domain, and determining the hub equipment of the two end domains and the upper domain according to the equipment levels of the two end domains and the upper domain.
Step S32: and selecting the junction equipment of the two end domains and/or the upper domain to be connected to form a link according to the networking information of the upper domain.
Step S321: and judging that the networking mode of the upper domain is tree networking or point-to-point networking, if the networking mode is tree networking, entering the step S322, and if the networking mode is point-to-point networking, entering the step S323.
Step S322: and selecting the junction devices of the two end domains to be respectively connected with the junction devices of the upper domain according to the judging result of the tree networking to obtain two links.
Step S323: and selecting the hub equipment of the two end domains to carry out direct connection to obtain a link according to the judging result of the point-to-point networking.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the corresponding processes in the above-described method embodiments may refer to the foregoing systems, units and specific working processes of the units, which are not described herein again.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An SDN network virtualization subnet management system, the system comprising:
the network resource management unit is used for acquiring and storing domain-division multi-level network data, wherein the network data comprises domain networking information and domain equipment related information, and the domain networking information comprises a domain identifier, a domain level, a domain networking mode and an upper domain identifier;
the user demand management unit is used for acquiring and storing subnet demand information of a user, wherein the user subnet demand information comprises user attribute information and domain information of a demand subnet, and the domain information of the demand subnet comprises a domain identifier, a domain level and a domain bandwidth;
the link splitting unit is used for acquiring hub devices of two end domains and an upper domain of a subnet required by a user in a network according to domain information of the subnet required by the user in the user requirement management unit and domain networking information in the network resource management unit, selecting corresponding hub devices in the domain according to the networking information of the upper domain to be connected into a link, and determining the bandwidth of the link;
the instruction issuing unit is used for issuing an instruction to equipment corresponding to the link according to the link obtained by the link splitting unit;
the link splitting unit further includes:
the hub equipment determining module is used for acquiring the domain in the network resource management unit corresponding to the domain information of the required subnet, determining the two end domains and the upper domain of the subnet required by the user in the network according to the acquired networking information of the domain, and determining the hub equipment of the two end domains and the upper domain according to the equipment levels of the two end domains and the upper domain;
the link determining module is used for selecting the junction equipment of the two end domains and/or the upper domain to be connected to form a link according to the networking information of the upper domain; comprising the following steps:
the networking judging module judges that the networking mode of the upper domain is tree networking or point-to-point networking;
the connection module is used for selecting the junction devices of the two end domains to be respectively connected with the junction devices of the upper domain to obtain two links according to the tree-shaped networking judgment result of the networking judgment module; and selecting the hub equipment of the two end domains to be directly connected to obtain a link according to the point-to-point networking judgment result of the networking judgment module.
2. The system according to claim 1, wherein:
the device related information of the domain comprises a device identifier, a device level, a domain identifier of the device, a device link, a port and bandwidth information;
the user attribute information includes a user identification.
3. The system according to claim 2, wherein:
and the link bandwidth determined by the link determination module is the bandwidth accumulation of the equipment with the same two ends.
4. A method of SDN network virtualization subnet management, the method comprising:
acquiring and storing domain-division multi-level network data, wherein the network data comprises domain networking information and domain equipment related information, and the domain networking information comprises a domain identifier, a domain level, a domain networking mode and an upper domain identifier;
acquiring and storing subnet demand information of a user, wherein the user subnet demand information comprises user attribute information and domain information of a demand subnet, and the domain information of the demand subnet comprises a domain identifier, a domain hierarchy and a domain bandwidth;
acquiring hub devices of two end domains and an upper domain of a subnet required by a user in a network according to domain information required by the subnet of the user and the stored domain networking information, selecting corresponding hub devices in the domain to be connected into a link according to the networking information of the upper domain, and determining the bandwidth of the link;
acquiring the stored domain corresponding to the domain information of the user demand subnet, determining two end domains and an upper domain of the user demand subnet in a network according to the acquired networking information of the domain, and determining hub equipment of the two end domains and the upper domain according to equipment levels of the two end domains and the upper domain;
selecting the junction equipment of the two end domains and/or the upper domain to be connected to form a link according to the networking information of the upper domain;
according to the obtained link, an instruction is issued to equipment corresponding to the link;
the link is specifically formed by selecting the junction devices of the two end domains and/or the upper domain to be connected according to the networking information of the upper domain:
judging that the networking mode of the superior domain is tree networking or point-to-point networking;
according to the judgment result of the tree networking, selecting the junction devices of the two end domains to be respectively connected with the junction devices of the upper domain to obtain two links; and selecting the hub equipment of the two end domains to carry out direct connection to obtain a link according to the judging result of the point-to-point networking.
5. The method according to claim 4, wherein:
the device related information of the domain comprises a device identifier, a device level, a domain identifier of the device, a device link, a port and bandwidth information;
the user attribute information includes a user identification.
6. The method according to claim 5, wherein determining the bandwidth of the link is specifically:
the determined link bandwidth is the bandwidth accumulation of the same equipment at both ends.
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| CN105376197A (en) * | 2014-08-22 | 2016-03-02 | 中国电信股份有限公司 | Method of realizing hierarchical network abstraction and system |
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