CN108989170B

CN108989170B - Method, device and system for realizing IP service

Info

Publication number: CN108989170B
Application number: CN201710399860.0A
Authority: CN
Inventors: 吴萍; 陈建业; 李宏飚
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2022-03-25
Anticipated expiration: 2037-05-31
Also published as: CN108989170A

Abstract

The embodiment of the invention provides a method, equipment and a system for realizing IP service, wherein the method comprises the following steps: the application server generates and sends configuration information of the VTE-Link; the IP controller receives preset configuration information of VTE-Link; the configuration information is issued to source router equipment and sink router equipment corresponding to the VTE-Link; based on the received path calculation request, calculating the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link; after receiving an activation instruction, sending the path information to the source router device for the source router device to establish a virtual channel with a sink router device; and after receiving the virtual channel establishment completion message, updating the network topology information for opening the subsequent IP service.

Description

Method, device and system for realizing IP service

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method, a device, and a system for implementing an IP service.

Background

With the development of communication technology, services (hereinafter, all refer to IP services) are developed from a single common internet service to a comprehensive service taking a video service as a main factor, and the requirements of the services on a network are not only connectivity but also requirements of large bandwidth, low time delay, high reliability, high flexibility and the like are provided.

Based on the above requirements, a variety of resource optimization techniques are developed in the IP layer to try to utilize IP network resources more flexibly and improve the capability of network adaptation services, but these techniques are difficult to meet the requirements of complexity and tuning effect at the same time. Taking TE (traffic engine) to perform IP backbone optimization as an example, adjusting a TE link will cause impact to other links and nodes and pull the whole body, so that multiple times of optimization are often required to achieve the goal.

At present, each operator finally solves the high bandwidth requirement of continuously emerging new services on a network in a mode of capacity expansion equipment, capacity expansion ports and capacity expansion links, and the increase of the new services does not lead the operators to obtain income, but leads the operators to be in an embarrassing situation that the increment is not increased for a long time. Therefore, a more effective method is needed to improve the utilization of network resources and to make the network adapt to the service more flexibly.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a method, device, and system for implementing an IP service.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

the embodiment of the invention provides a method for realizing IP service, which comprises the following steps:

receiving configuration information of a preset virtual endpoint connected with VTE-Link;

the configuration information is issued to source router equipment and sink router equipment corresponding to the VTE-Link;

based on the received path calculation request, calculating the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link;

after receiving an activation instruction, sending the path information to the source router device for the source router device to establish a virtual channel with a sink router device;

and after receiving the virtual channel establishment completion message, updating the network topology information for opening the subsequent IP service.

Wherein the configuration information includes, but is not limited to, the following information:

basic information of a Virtual channel group Interface, an IP address of a Virtual Interface (vlif), a binding relationship between vIF and a Virtual channel group, Virtual channels bound in the Virtual channel group, and vIF Internal Gateway Protocol (IGP) and Border Gateway Protocol (BGP).

Optionally, after the IP service fails, the method further includes:

receiving indication information for deleting VTE-Link;

forwarding the indication information to source and destination router devices corresponding to the VTE-Link, so that the source and destination router devices delete the virtual channel corresponding to the VTE-Link;

and after the virtual channel deletion completion message is received, updating the network topology information.

Optionally, when the IP service needs to be expanded, the method further includes:

receiving first adjustment information of a virtual channel corresponding to the VTE-Link; the first adjustment information is used for indicating that N virtual channels are newly added in a virtual channel group corresponding to the VTE-Link, wherein N is a positive integer;

the corresponding relation between the N virtual channels and the virtual channel group is issued to the source router equipment and the destination router equipment corresponding to the VTE-Link;

calculating the path information of the N virtual channels, and sending the path information to the source router equipment for the source router equipment to establish the N virtual channels with the destination router equipment;

and after the N virtual channel establishment completion messages are received, updating network topology information.

Optionally, when the IP service needs to be scaled, the method further includes:

receiving second adjustment information of the virtual channel corresponding to the VTE-Link; the second adjustment information is used for indicating that M virtual channels are deleted in the virtual channel group corresponding to the VTE-Link, wherein M is a positive integer;

sending the indication information for deleting the M virtual channels to the source router equipment and the destination router equipment corresponding to the VTE-Link, wherein the indication information is used for deleting the M virtual channels by the source router equipment and the destination router equipment;

and after the M virtual channels are deleted, updating the network topology information.

The embodiment of the invention also provides a method for realizing the IP service, which comprises the following steps:

sending preset configuration information of VTE-Link to IP controller;

sending a path calculation request; the path calculation request is used for indicating the IP controller to calculate the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link;

sending an activation instruction to the IP controller based on a preset VTE-Link activation mode; and the activation indication is used for indicating the IP controller to send the path information to the source router equipment corresponding to the VTE-Link so as to establish a virtual channel between the source router equipment and the sink router equipment.

Wherein, the sending of the activation instruction to the IP controller based on the preset VTE-Link activation manner includes any one of the following manners:

after receiving the instruction of manually activating the VTE-Link, sending an activation instruction to the IP controller;

after detecting IP service related information, sending an activation instruction to the IP controller;

and when detecting that the preset VTE-Link activation condition is met, sending an activation instruction to the IP controller.

Optionally, after the IP service fails, the method further includes:

and sending indication information for deleting the VTE-Link to the IP controller.

sending first adjustment information of a virtual channel corresponding to the VTE-Link; the first adjustment information is used for indicating that N virtual channels are newly added in the virtual channel group corresponding to the VTE-Link, wherein N is a positive integer.

sending second adjustment information of the virtual channel corresponding to the VTE-Link; and the second adjustment information is used for indicating that M virtual channels are deleted in the virtual channel group corresponding to the VTE-Link, wherein M is a positive integer.

An embodiment of the present invention further provides an IP controller, where the IP controller includes:

the receiving module is used for receiving preset configuration information of the VTE-Link; after receiving the activation instruction, notifying a first sending module; after receiving the message of completing the establishment of the virtual channel, updating network topology information for opening subsequent IP services;

the computing module is used for computing the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link based on the received path computing request;

the first sending module is used for sending the configuration information to source and destination router equipment corresponding to the VTE-Link; and after receiving the notification of the receiving module, sending the path information calculated by the calculating module to the source router equipment for establishing a virtual channel between the source router equipment and the sink router equipment.

Optionally, after the IP service fails,

the receiving module is further used for receiving indication information for deleting the VTE-Link; after receiving the virtual channel deletion completion message, updating network topology information;

the first sending module is further configured to forward the indication information to the source and destination router devices corresponding to the VTE-Link, and configured to delete the virtual channel corresponding to the VTE-Link by the source and destination router devices.

Optionally, when the IP service needs to be expanded,

the receiving module is further configured to receive first adjustment information of a virtual channel corresponding to the VTE-Link; the first adjustment information is used for indicating that N virtual channels are newly added in a virtual channel group corresponding to the VTE-Link, wherein N is a positive integer; the network topology information updating module is also used for updating the network topology information after receiving the N virtual channels establishing completion messages;

the computing module is further configured to compute path information of the N virtual channels, and issue the path information to the source router device through the first sending module, where the path information is used for the source router device to establish the N virtual channels with the sink router device;

the first sending module is further configured to send the correspondence between the N virtual channels and the virtual channel group to the source and destination router devices corresponding to the VTE-Link.

Optionally, when the IP service needs to be scaled down,

the receiving module is further configured to receive second adjustment information of the virtual channel corresponding to the VTE-Link; the second adjustment information is used for indicating that M virtual channels are deleted in the virtual channel group corresponding to the VTE-Link, wherein M is a positive integer; the network topology information updating module is also used for updating the network topology information after receiving the M virtual channels deleting completion messages;

the first sending module is further configured to send instruction information for deleting M virtual channels to the source and destination router devices corresponding to the VTE-Link, and the source and destination router devices are configured to delete the M virtual channels.

An embodiment of the present invention further provides an application server, where the application server includes:

the second sending module is used for sending the preset configuration information of the VTE-Link to the IP controller; sending a path calculation request; the path calculation request is used for indicating the IP controller to calculate the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link;

a third sending module, configured to send an activation instruction to the IP controller based on a preset VTE-Link activation manner; and the activation indication is used for indicating the IP controller to send the path information to the source router equipment corresponding to the VTE-Link so as to establish a virtual channel between the source router equipment and the sink router equipment.

Optionally, after the IP service fails,

the second sending module is further configured to send instruction information for deleting the VTE-Link to the IP controller.

Optionally, when the IP service needs to be expanded,

the second sending module is further configured to send first adjustment information of the virtual channel corresponding to the VTE-Link; the first adjustment information is used for indicating that N virtual channels are newly added in the virtual channel group corresponding to the VTE-Link, wherein N is a positive integer.

Optionally, when the IP service needs to be scaled down,

the second sending module is further configured to send second adjustment information of the virtual channel corresponding to the VTE-Link; and the second adjustment information is used for indicating that M virtual channels are deleted in the virtual channel group corresponding to the VTE-Link, wherein M is a positive integer.

The embodiment of the invention also provides a system for realizing the IP service, which comprises: a router device, an IP controller as described above and an application server.

The method, the device and the system for realizing the IP service provided by the embodiment of the invention receive the configuration information of the preset VTE-Link; the configuration information is issued to source router equipment and sink router equipment corresponding to the VTE-Link; based on the received path calculation request, calculating the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link; after receiving an activation instruction, sending the path information to the source router device for the source router device to establish a virtual channel with a sink router device; and after receiving the virtual channel establishment completion message, updating the network topology information for opening the subsequent IP service. The embodiment of the invention forms a Virtual network based on a Virtual PIPE (vPIPE) by constructing an end-to-end Virtual channel on an IP network, develops services on the vPIPE Virtual network, and flexibly calls the vPIPE Virtual network resources as required by virtualizing the resources of a physical network, thereby improving the utilization rate of the physical network resources.

In addition, the bandwidth adjustment of the embodiment of the invention is actually to increase or decrease the number of virtual channels in a virtual channel group, belongs to the scope of a virtual network resource layer of the vPIPE, and does not change a logical topological structure, so that the overall flow cannot be influenced, and the service of other links cannot be influenced.

Drawings

Fig. 1 is a first flowchart of a method for implementing an IP service according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a method for implementing an IP service according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an IP controller according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an application server according to an embodiment of the present invention;

fig. 5 is a diagram of a new network topology formed by the vPIPE virtual network technique of the present invention;

fig. 6 is a new network hierarchy diagram formed by the vPIPE virtual network technology of the present invention;

FIG. 7 is a diagram of a physical topology of a network formed by routers in a conventional network;

fig. 8 is an abstract topology diagram formed by the vPIPE virtual network technology in accordance with the present invention;

fig. 9 is a schematic diagram of a virtualized tunnel between any two routers according to the embodiment of the present invention;

fig. 10 is a schematic diagram illustrating adjustment of tunnel establishment between any two points vIF according to the embodiment of the present invention;

FIG. 11 is a system architecture diagram according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a basic network planning process according to an embodiment of the present invention;

fig. 13 is a schematic view of an IP service creation process in a manual activation manner according to an embodiment of the present invention;

fig. 14 is a schematic diagram of an IP service creation flow of the service activation method according to the embodiment of the present invention;

fig. 15 is a schematic diagram of an IP service creation flow of the conditional activation mode according to the embodiment of the present invention;

fig. 16 is a schematic diagram illustrating an IP service removal process according to an embodiment of the present invention;

fig. 17 is a schematic view illustrating an IP service capacity expansion flow according to an embodiment of the present invention;

fig. 18 is a schematic diagram of an IP service capacity reduction process according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to specific examples.

An embodiment of the present invention provides a method for implementing an IP service, as shown in fig. 1, the method includes:

step 101: receiving configuration information of a preset Virtual Terminal-Endpoint Link (VTE-Link);

step 102: the configuration information is issued to source router equipment and sink router equipment corresponding to the VTE-Link;

step 103: based on the received path calculation request, calculating the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link;

step 104: after receiving an activation instruction, sending the path information to the source router device for the source router device to establish a virtual channel with a sink router device;

step 105: and after receiving the virtual channel establishment completion message, updating the network topology information for opening the subsequent IP service.

The embodiment of the invention forms the virtual network based on the vPIPE by constructing the end-to-end virtual channel on the IP network, develops the service on the vPIPE virtual network, and flexibly calls the vPIPE virtual network resource as required by virtualizing the resource of the physical network, thereby improving the utilization rate of the physical network resource.

In the embodiment of the present invention, the configuration information includes, but is not limited to, the following information:

basic information of the virtual channel group interface, the IP address of vIF, the binding relationship of vIF to the virtual channel group, the virtual channels bound in the virtual channel group, and IGP, BGP of vIF.

In one embodiment, after the IP service fails, the method further includes:

receiving indication information for deleting VTE-Link;

In another embodiment, when the IP service needs to be expanded, the method further includes:

In another embodiment, when the IP service needs to be scaled, the method further includes:

Therefore, the bandwidth adjustment of the embodiment of the invention is actually to increase or decrease the number of virtual channels in a virtual channel group, belongs to the scope of a virtual network resource layer of the vPIPE, and does not change a logical topological structure, so that the overall flow cannot be influenced, and the service of other links cannot be influenced.

An embodiment of the present invention further provides a method for implementing an IP service, as shown in fig. 2, the method includes:

step 201: sending preset configuration information of VTE-Link to IP controller;

step 202: sending a path calculation request; the path calculation request is used for indicating the IP controller to calculate the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link;

step 203: sending an activation instruction to the IP controller based on a preset VTE-Link activation mode; and the activation indication is used for indicating the IP controller to send the path information to the source router equipment corresponding to the VTE-Link so as to establish a virtual channel between the source router equipment and the sink router equipment.

In this embodiment of the present invention, the sending of the activation instruction to the IP controller based on the preset VTE-Link activation method includes any one of the following methods:

after detecting IP service related information (such as service access point, service quality and the like), sending an activation instruction to the IP controller;

In one embodiment, after the IP service fails, the method further includes:

The embodiment of the present invention further provides an IP controller for implementing the above embodiments, which has already been described and will not be described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. As shown in fig. 3, the apparatus includes:

a receiving module 301, configured to receive configuration information of a preset VTE-Link; after receiving the activation instruction, notifying a first sending module; after receiving the message of completing the establishment of the virtual channel, updating network topology information for opening subsequent IP services;

a calculating module 302, configured to calculate, based on the received path calculation request, path information of virtual channels in a virtual channel group corresponding to the VTE-Link;

the first sending module 303 is configured to send the configuration information to source and destination router devices corresponding to the VTE-Link; and after receiving the notification of the receiving module, sending the path information calculated by the calculating module to the source router equipment for establishing a virtual channel between the source router equipment and the sink router equipment.

In one embodiment, after the IP traffic fails,

the receiving module 301 is further configured to receive indication information for deleting VTE-Link; after receiving the virtual channel deletion completion message, updating network topology information;

the first sending module 303 is further configured to forward the indication information to the source and destination router devices corresponding to the VTE-Link, and configured to delete the virtual channel corresponding to the VTE-Link by the source and destination router devices.

In one embodiment, when the IP service needs to be expanded,

the receiving module 301 is further configured to receive first adjustment information of a virtual channel corresponding to the VTE-Link; the first adjustment information is used for indicating that N virtual channels are newly added in a virtual channel group corresponding to the VTE-Link, wherein N is a positive integer; the network topology information updating module is also used for updating the network topology information after receiving the N virtual channels establishing completion messages;

the calculating module 302 is further configured to calculate path information of the N virtual channels, and issue the path information to the source router device through the first sending module, so that the source router device establishes the N virtual channels with the sink router device;

the first sending module 303 is further configured to send the correspondence between the N virtual channels and the virtual channel group to the source and destination router devices corresponding to the VTE-Link.

In one embodiment, when the IP traffic needs to be scaled down,

the receiving module 301 is further configured to receive second adjustment information of a virtual channel corresponding to the VTE-Link; the second adjustment information is used for indicating that M virtual channels are deleted in the virtual channel group corresponding to the VTE-Link, wherein M is a positive integer; the network topology information updating module is also used for updating the network topology information after receiving the M virtual channels deleting completion messages;

the first sending module 303 is further configured to send instruction information for deleting M virtual channels to the source and destination router devices corresponding to the VTE-Link, and configured to delete the M virtual channels by the source and destination router devices.

An embodiment of the present invention further provides an application server, as shown in fig. 4, where the application server includes:

a second sending module 401, configured to send configuration information of a preset VTE-Link to the IP controller; sending a path calculation request; the path calculation request is used for indicating the IP controller to calculate the path information of the virtual channels in the virtual channel group corresponding to the VTE-Link;

a third sending module 402, configured to send an activation instruction to the IP controller based on a preset VTE-Link activation manner; and the activation indication is used for indicating the IP controller to send the path information to the source router equipment corresponding to the VTE-Link so as to establish a virtual channel between the source router equipment and the sink router equipment.

In one embodiment, after the IP traffic fails,

the second sending module 401 is further configured to send indication information for deleting the VTE-Link to the IP controller.

In one embodiment, when the IP traffic needs to be expanded,

the second sending module 401 is further configured to send first adjustment information of a virtual channel corresponding to the VTE-Link; the first adjustment information is used for indicating that N virtual channels are newly added in the virtual channel group corresponding to the VTE-Link, wherein N is a positive integer.

In one embodiment, when IP traffic requires scalability,

the second sending module 401 is further configured to send second adjustment information of the virtual channel corresponding to the VTE-Link; and the second adjustment information is used for indicating that M virtual channels are deleted in the virtual channel group corresponding to the VTE-Link, wherein M is a positive integer.

The present invention is described below with reference to TE and SR tunneling technologies (not limited to these two technologies), and taking an IP Network scenario (but not limited to this scenario) under an (Software Design Network, SDN) architecture as an example.

In an SDN network architecture, a new network model is defined, as shown in fig. 5 and 6, an IP network device (router) is used as a network physical basis, an abstract topology is constructed through a vPIPE according to a traffic matrix of a service, and the service flexibly calls vPIPE virtual network resources as required by virtualizing resources of a physical network, so that the utilization rate of the physical network resources is improved.

For ease of understanding, the vPIPE virtual network layer will first be described.

1) Constructing abstract topology on demand from traffic matrix

Fig. 7 shows an IP layer network physical topology formed by conventional routers, and an abstract topology structure required by any service can be constructed on the existing network topology by a vPIPE virtual network technology, and as shown in fig. 8, a tree topology using point a as a tree root can be realized by establishing a tunnel AB (path a- - -B), a tunnel AC (path a- - -B- - -C) and a tunnel AD (path a- - -B- - -C- - -D).

2) Virtual tunnel definition between any two routers

vIF: virtualizing an IP L3Interface resource pool by all physical ports of the router, and defining the pool as an vIF pool;

TE/SR Tunnel (i.e., virtual channel above): a tunnel established by TE/a tunnel established by Segment Routing;

TE/SR Tunnel-Group (i.e., virtual channel Group above): consists of a set of TE tunnels/consists of a set of SR tunnels;

and (3) vPIPE: and the virtual network pipeline consists of a TE/SR Tunnel-Group.

Specific relations are shown in fig. 9, and the logical relations among the physical ports, the vlif, the TE/SR Tunnel-Group, and the vPIPE are as follows:

the physical ports of the router are pooled into a plurality of vIF logical subinterfaces;

one physical port can correspond to TE/SR tunnels in multiple directions through vIF;

the connection between any two vIF is formed by TE/SR tunnels-Group consisting of n TE/SR tunnels, and each vIF is bound with one TE/SR Tunnel-Group;

the TE/SR Tunnel-Group can correspond to one TE/SR Tunnel or a plurality of TE/SR tunnels, and the plurality of TE/SR tunnels can share load (ECMP) or have a relation between work and protection;

the bandwidth of the TE/SR Tunnel-Group can be adjusted by adjusting the number of TE/SR-tunnels.

3) Tunnel creation and adjustment between arbitrary two points vIF

As shown in FIG. 10, VTE-Link was created between vIF;

the VTE-Link is an IP virtual Link generated by a planning tool, is a Link for establishing a vPIPE virtual network resource and an IP service, and corresponds to a router port resource pool and a tunnel reserved resource pool;

the VTE-Link firstly binds the TE/SR Tunnel-Group and then binds the TE/SR Tunnel-Group in a mode correlation;

the administrator can add, delete and modify the TE tunnels in the TE/SR tunnels-Group corresponding to the VTE-Link on line according to the change of the network resources, and can also establish a flow strategy to dynamically adjust the TE/SR tunnels in the TE/SR tunnels-Group corresponding to the VTE-Link on line, thereby adjusting the bandwidth size between vIF.

The system architecture of the embodiment of the present invention is shown in fig. 11, and the interface between the APP and the IP controller is: the standard Restconf interface; the interface between the IP controller and the IP equipment is as follows: the configuration, issuing and obtaining use a Netconf/YANG interface, the obtaining of the network topology uses a BSP-LS interface, and the issuing of the routing request and the path uses a PCEP interface; the interface between the IP network manager and the IP equipment is as follows: SNMP or CLI.

The service creation process is described in detail below.

IP service creation flow

When the IP layer has a service connection requirement, triggering the vPIPE virtual network to call resources to establish a TE/SR tunnel, wherein the IP service creation process comprises a basic network planning stage as shown in FIG. 12 and an IP service creation stage (as shown in FIGS. 13-15): note that, in fig. 12 to 18, the Router represents the source TE/SR device, or represents the source TE/SR device and the sink TE/SR device; the IP-C represents an IP controller; the APP is the planning APP.

Stage one: basic network planning (prior art)

Step 1: the IP network manager configures IP address, IGP, BGP and other services for the IP network equipment, so that the equipment can reach the IP layer;

step 2: the IP controller collects the physical topology of the IP network and adopts a Netconf + LLDP mode;

and step 3: the IP controller reports the physical topology of the IP network to a planning APP;

and a second stage: the process of creating the IP service of the embodiment of the invention can comprise three modes, including:

the first method is as follows: manual activation (as shown in figure 13)

And 4, step 4: based on the physical topology of the IP network, in planning APP, a source vIF and a sink vIF of the VTE Link, an activation mode, a maximum delay, and the like are specified according to IP service requirements, and TE/SR tunnels (i.e., the above virtual channels) included in a TE/SR Tunnel-Group (i.e., the above virtual channel Group) under the VTE Link and related service attributes, such as bandwidth attributes, protection types, and the like, are specified;

the activation mode comprises manual activation of VTE-Link, service activation of VTE-Link, conditional activation of VTE-Link and the like, and the attributes of the three service activation modes can be selected and are default to manual activation.

And 5: the planning APP issues configuration information of VTE Link planned by a user to an IP controller through a Restconf interface;

step 6: the IP controller writes the configuration information of the VTE-Link into a VTE-Link database;

and 7: the IP controller issues the configuration information of the VTE-Link to IP equipment (router equipment) at two ends where a TE/SR Tunnel-Group interface is located through a Netconf channel;

here, the configuration information mainly includes basic information of the TE/SR Tunnel-Group interface, an IP address of vIF, a binding relationship between vIF and the TE/SR Tunnel-Group, IGP, BGP, and the like of the TE/SR Tunnel and vIF interfaces bound in the TE/SR Tunnel-Group.

And 8: the planning APP issues a path calculation request of a user to the VTE-link to the IP controller through a Restconf interface;

and step 9: the IP controller calculates a path and writes a calculation result into a database;

step 10: a user manually activates VTE-Link on a planning APP, and the APP issues a manual activation instruction to an IP controller;

step 11: the IP controller issues information (path calculation result) required by the establishment of the TE/SR Tunnel corresponding to the VTE Link to the source TE/SR equipment through the PCEP;

step 12: the source TE/SR equipment uses RSVP-TE/Segment Routing information to establish a forwarding channel between TE/SR tunnels between the source TE/SR equipment and the destination TE/SR;

step 13: after the TE/SR Tunnel is established, the source TE/SR equipment informs the controller of the establishment result;

step 14: when the IP controller receives the notification that the VTE Link is successfully activated, the IP controller informs a path computation module (PCE), the PCE re-computes the path of the TE/SR Tunnel, and the new path contains the activated VTE Link;

step 15: the corresponding TE/SR Tunnel-Group interface protocol UP on the source TE/SR device and the corresponding TE/SR Tunnel-Group interface protocol UP on the sink TE/SR device are reported to the IP controller through a BGP-LS interface;

step 16: the IP controller converts and writes the topology collected by BGP-LS according to the model defined by the logical topology management module database; at this time, the TE/SR Tunnel creation process is ended, and for the IP service, an vIF interface of the TE/SR Tunnel is visible for the IP service;

and step 17: the IP controller synchronizes the latest network topology information to the APP;

step 18: information such as access points of services, service quality requirements and the like is input on the APP and submitted and then issued to the IP controller;

step 19: and the IP controller triggers the establishment of an IP service path by using the PCEP channel and opens the IP service.

The second method comprises the following steps: service activation (as shown in FIG. 14)

And 4, step 4: based on the physical topology of the IP network, in planning APP, according to the IP service requirement, a source vIF and a sink vIF of a VTE Link, an activation mode (configured as service activation), maximum time delay and the like are specified, and TE/SR tunnels contained in a TE/SR Tunnel-Group under the VTE Link and related service attributes such as bandwidth attributes, protection types and the like are specified;

and 7: the IP controller transmits VTE-Link configuration information to the TE/SR equipment at two ends where the TE/SR Tunnel-Group interface is located through a Netconf channel;

here, the configuration information mainly includes basic information of the TE/SR Tunnel-Group interface, an IP address, a binding relationship with the TE/SR Tunnel-Group, a TE/SR Tunnel bound in the TE/SR Tunnel-Group, and configurations of IGP and BGP of the TE/SR Tunnel-Group interface;

and step 9: the IP controller calculates a path, writes a calculation result into a database, and adds the VTE Link to be activated to the topology of the PCE calculation path;

step 10: planning information such as access points and service quality requirements of input services on the APP, submitting the information and then issuing the information to the IP controller;

step 11: PCE on the IP controller discovers that the computed path contains the inactive VTE Link and triggers an activation processing flow;

step 12: the IP controller transmits information required by the establishment of the TE/SR Tunnel corresponding to the VTE Link to the source TE/SR equipment through the PCEP;

step 13: the source TE/SR equipment establishes a forwarding channel between TE/SR tunnels between the source TE/SR equipment and the sink TE/SR equipment by using RSVP-TE information;

step 14: after the TE/SR Tunnel is established, the source TE/SR equipment informs the controller of the establishment result;

step 15: the corresponding TE/SR Tunnel-Group interface protocol UP on the source TE/SR device and the corresponding TE/SR Tunnel-Group interface protocol UP on the sink TE/SR device are reported to the controller through a BGP-LS interface;

and step 17: the IP controller synchronizes the latest network topology information to the planning APP;

step 18: and the IP controller triggers the establishment of an IP service path by using the PCEP channel and opens the IP service.

The third method comprises the following steps: conditional activation (as shown in FIG. 15)

And 4, step 4: based on the physical topology of the IP network, in planning APP, according to the IP service requirement, a source vIF and a sink vIF of a VTE Link, an activation mode (configured as conditional activation), maximum time delay and the like are specified, and TE/SR tunnels contained in a TE/SR Tunnel-Group under the VTE Link and related service attributes such as bandwidth attributes, protection types and the like are specified;

and 7: the IP controller transmits VTE-Link configuration information to IP equipment at two ends where a TE/SR Tunnel-Group interface is located through a Netconf channel;

step 10: waiting for planning a trigger condition of APP configuration, and when the condition is met, planning the APP and informing an IP controller;

step 10: the IP controller activates the VTE-Link when finding that the VTE-Link is in a state to be activated;

step 13: the source TE/SR equipment uses RSVP-TE/Segment Routing information to establish a forwarding channel between TE/SR tunnels between the source TE/SR equipment and the destination TE/SR;

step 15: when the IP controller receives the notification that the VTE Link is successfully activated, the IP controller informs a PCE module, the PCE module recalculates the path of the TE/SR Tunnel, and the new path contains the activated VTE Link;

step 16: the corresponding TE/SR Tunnel-Group interface protocol UP on the source TE/SR device and the corresponding TE/SR Tunnel-Group interface protocol UP on the sink TE/SR device are reported to the controller through a BGP-LS interface;

and step 17: the IP controller converts and writes the topology collected by BGP-LS according to the model defined by the logical topology management module database; at this time, the TE/SR Tunnel creation process is ended, and for the IP service, an vIF interface of the TE/SR Tunnel is visible for the IP service;

step 18: the IP controller synchronizes the latest network topology information to the APP;

The embodiment of the present invention further provides an IP service removal process, when IP service connection fails, the vPIPE virtual network removes the TE/SR Tunnel to release resources, and the IP service removal process is shown in fig. 16 and includes:

step 1: a user appoints to delete a certain VTE Link associated with the service on a planning APP;

step 2: the planning APP sends the indication information for deleting the VTE Link to the IP controller;

and step 3: after receiving indication information for deleting the VTE Link issued by the planning APP, the IP controller clears the information of the VTE Link in the database;

and 4, step 4: the IP controller transmits the deleted related information to the source TE/SR device and the sink TE/SR device through the Netconf channel;

and 5: the deletion operation of the source TE/SR equipment and the deletion operation of the host TE/SR equipment can trigger the removal of the TE/SR Tunnel corresponding to the VTE Link at the same time, and the final result is informed to the IP controller;

step 6: the IP controller updates the network topology and writes in;

and 7: the IP controller synchronizes the latest network topology information to the APP.

The embodiment of the present invention further provides an IP service capacity expansion flow, when the IP service needs to be expanded, only the bandwidth of the VTE-Link needs to be adjusted, and the topology of the IP layer is not changed, where the IP service capacity expansion flow is shown in fig. 17, and includes:

step 1: when the IP service needs capacity expansion, a user selects TE/SR Tunnel-Group bound by VTE Link on planning APP, adds N TE/SR tunnels therein, and specifies key attributes such as bandwidth, and related attributes of the time delay class can be directly obtained from the VTE Link;

step 2: the APP sends the adjusted information to the IP controller;

and step 3: the IP controller updates TE/SR Tunnel-Group information bound by the VTE Link;

and 4, step 4: the IP controller issues the binding relation between the TE/SR Tunnel and the TE/SR Tunnel-Group to corresponding source TE/SR equipment and host TE/SR equipment through a Netconf interface;

and 5: meanwhile, the IP controller calculates path information meeting the TE/SR Tunnel bandwidth requirement;

step 6: the IP controller sends the information of the newly added TE/SR Tunnel to the source TE/SR equipment by using the PCEP interface;

and 7: using RSVP-TE/Segment Routing signaling to establish a channel of a forwarding plane on source TE/SR equipment and destination TE/SR equipment;

and 8: after the forwarding channel of the newly-added TE/SR Tunnel is successfully established, the source TE/SR equipment and the host TE/SR equipment inform the result to the IP controller through a report message of the PCEP;

and step 9: the bandwidth of the VTE-Link is changed, and the source TE/SR equipment and the sink TE/SR equipment report the updated TE/SR information to the IP controller through BGP-LS;

step 10: the IP controller reads the TE information of the latest VTE Link from a topology library of BGP-LS, writes the TE information into a database of logic topology management, and updates the TE information into a graph used for path calculation by PCEP for subsequent path calculation;

step 11: the IP controller synchronizes the latest network topology information to the APP.

The embodiment of the present invention further provides an IP service capacity reduction process, and through periodic statistics, it is found that some Link bandwidths are always too large to cause waste, and release the vPIPE virtual network resource, only the bandwidth of the VTE-Link needs to be adjusted, and the topology of the IP layer is not changed, where the IP service capacity reduction process is shown in fig. 18 and includes:

step 1: when the IP service needs capacity reduction, a user selects TE/SR Tunnel-Group bound by VTE Link on a planning APP, and deletes N TE/SR tunnels;

step 2: the planning APP sends the adjusted information to the IP controller;

and 4, step 4: the IP controller issues a TE/SR Tunnel operation for deleting the corresponding TE/SR to the source TE/SR device and the sink TE/SR device;

and 5: deleting operation of the TE/SR tunnels of the source TE/SR equipment and the host TE/SR equipment and triggering signaling to remove the TE/SR tunnels;

step 6: after the source TE/SR equipment and the sink TE/SR equipment delete the TE/SR Tunnel successfully, the result is informed to the IP controller through a report message of the PCEP;

and 7: the bandwidth of the VTE-Link is changed, and the source TE/SR equipment and the sink TE/SR equipment report the updated TE/SR information to the IP controller through BGP-LS;

and 8: the IP controller reads the TE information of the latest VTE Link from a topology library of BGP-LS, writes the TE information into a database of logic topology management, and updates the TE information into a graph used for path calculation by PCEP for subsequent path calculation;

and step 9: the IP controller synchronizes the latest network topology information to the APP.

After the physical ports of the router are pooled, all the physical ports of each router are virtualized into a plurality of vIF interfaces, and vIF interfaces share the physical port resources of the router; network resources are pooled through the vPIPE virtual network layer, the virtualized vPIPE virtual network layer only allocates the network resources, such as addition and deletion of links, adjustment of bandwidth and the like, the IP service layer can call the network resources according to service requirements, and the flexibility and the use efficiency of the network are improved; the function of dynamically calling the Tunnel bandwidth is achieved by increasing and decreasing the quantity of TE/SR tunnels of the VTE-Link.

In addition, for the service of the IP layer, the requirement of the IP service layer changes, and the bandwidth between the two vIF is adjusted, which belongs to the category of the IP service layer, while the bandwidth of the TE/SR Tunnel in the TE/SR Tunnel-Group on the vPIPE virtual network is actually adjusted, which belongs to the category of the vPIPE virtual network resource layer, and the two are decoupled and dynamically associated. Therefore, adjusting the bandwidth does not change the topology and configuration of the IP traffic abstraction layer.

In addition, the embodiment of the invention has wide application scenes:

the method is suitable for optimizing the flow of the IP backbone network;

based on periodic expansion and contraction capacity: the operator periodically expands and contracts the own network according to the own service planning and the existing network use statistics;

based on the service burst expansion capacity: if the bandwidth is increased sharply to a certain destination due to an unexpected hot spot event, the operator can expand the bandwidth in real time.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A method for implementing IP service is characterized in that the method comprises the following steps:

2. The method of claim 1, wherein the configuration information includes, but is not limited to, the following information:

basic information of the virtual channel group interface, the IP address of the virtual interface vIF, the binding relationship of vIF and the virtual channel group, the virtual channels bound in the virtual channel group, and the interior gateway protocol IGP and border gateway protocol BGP of vIF.

3. The method of claim 1, wherein after the IP service fails, the method further comprises:

receiving indication information for deleting VTE-Link;

4. The method of claim 1, wherein when the IP service needs capacity expansion, the method further comprises:

5. The method of claim 1, wherein when the IP service requires the capacity reduction, the method further comprises:

6. A method for implementing IP service is characterized in that the method comprises the following steps:

sending preset configuration information of VTE-Link to IP controller;

7. The method according to claim 6, wherein the sending the activation indication to the IP controller based on the preset VTE-Link activation mode comprises any one of the following modes:

8. The method of claim 6, wherein after the IP service fails, the method further comprises:

9. The method of claim 6, wherein when the IP service needs capacity expansion, the method further comprises:

10. The method of claim 6, wherein when the IP traffic requires the capacity reduction, the method further comprises:

11. An IP controller, comprising:

12. The IP controller of claim 11, wherein the IP traffic fails,

13. The IP controller of claim 11, wherein when the IP traffic needs capacity expansion,

14. The IP controller of claim 11, wherein when the IP traffic requires scalability,

15. An application server, characterized in that the application server comprises:

16. The application server of claim 15, wherein, after the IP service fails,

17. The application server of claim 15, wherein when IP traffic needs capacity expansion,

18. The application server of claim 15, wherein when the IP traffic requires the capacity reduction,

19. A system for implementing IP services, the system comprising: a router device, an IP controller according to any of claims 11-14, and an application server according to any of claims 15-18.