CN113542019B - Upgrading method and system for transfer control separation distributed CP - Google Patents
Upgrading method and system for transfer control separation distributed CP Download PDFInfo
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Abstract
The application provides a method and a system for upgrading a control-transfer separated distributed CP, wherein the method requires a plurality of network elements for the function of one control node CP under the control-transfer separated distributed architecture, and the method comprises the following steps: the first network element registers the second network element and the third network element of the same network segment, and stores registration information in the first network element; three upgrade packages for upgrading the three network elements are sent to the first network element; the first network element distributes the three upgrade packages to the corresponding network elements respectively; each network element judges whether to upgrade according to own software version and feeds back the result to the first network element; if the upgrade is required, uniformly triggering the upgrade by the management server; and judging whether all network elements are updated successfully by the first network element. In the embodiment of the application, the management server uniformly triggers the upgrade of each network element, so that the unified management of the network element version is realized, the workload of upgrading the software version is greatly reduced, the human error is reduced, and the consistency of the version can be ensured.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and a system for upgrading a control and separation distributed CP.
Background
In a control-over-control separated distributed architecture, the function of one control node CP (control plane) needs several network elements, for example, (CTRL-VM, BRAS-VM and FWD-VM) to complement each other. As network traffic increases, the number of network element devices required is greater. Therefore, in the case of a large number of network elements, how to provide a user with an operation portal for quick upgrade is very important. The existing upgrading scheme can only realize the upgrading operation of one network element, and when a large number of network elements exist, the upgrading operation is carried out on single network elements one by one, so that a large number of repeated and inefficient works can be realized.
And if versions of multiple network elements belonging to the same distributed CP architecture are inconsistent, the control plane function of the whole distributed CP may be incomplete or unavailable. Therefore, how to guarantee that multiple network elements belonging to the same distributed CP are upgraded to the same version is important. The existing upgrading scheme requires a user to initiate a large number of upgrading operations, and may occur that a certain network element is not upgraded or different version files are selected to upgrade the network element because of artificial omission. The operation of ensuring the version consistency completely depends on manual operation of a user, and has no reliability.
Disclosure of Invention
In order to overcome the problems in the related art, the present specification provides a method and a system for upgrading a control-switching separation distributed CP.
The first aspect of the present embodiment provides an upgrade method of a control-switching separated distributed CP, where a function of a control node CP needs a plurality of network elements under a control-switching separated distributed architecture, including:
the first network element registers the second network element and the third network element of the same network segment, and stores registration information in the first network element;
three upgrade packages for upgrading the three network elements are sent to the first network element;
the first network element distributes the three upgrade packages to the corresponding network elements respectively;
each network element judges whether to upgrade according to own software version and feeds back the result to the first network element;
if the upgrade is required, uniformly triggering the upgrade by the management server;
and judging whether all network elements are updated successfully by the first network element.
Further, if the upgrade is to be performed, the unified triggering of the upgrade by the management server includes:
the first network element upgrades the software version of the first network element;
if the upgrade is successful, the first network element informs the second network element and the third network element to upgrade the software version;
the first network element acquires the upgrading results of other types of network elements, and if the upgrading of all registered network elements is successful, the upgrading is judged to be successful.
Further, the management server periodically acquires the upgrade states of all the network elements on the first network element and displays the states of the network elements.
Further, if the management server acquires that each network element is still in upgrading, displaying the state through the dynamic icon;
if the management server acquires that each network element is updated, names of the successfully updated network elements and new updated software versions are displayed;
if the management server acquires that the network element fails to upgrade, the network element and the possible reasons for the failure are marked.
Further, if the management server acquires that the network element is not successfully upgraded, the network element which is not successfully upgraded is independently upgraded again.
Preferably, there are at least two network elements, and a master slave backup is made.
Further, before the first network element registers the second network element and the third network element of the same network segment, the same network segment is configured for the internal interfaces of the three network elements.
The second aspect of the present application further provides an upgrade system for a control-over-separation distributed CP, where under the control-over-separation distributed architecture, a function of a control node CP needs a plurality of network elements, including:
the upgrade system at least comprises a first network element, a second network element and a third network element according to the functions, and the upgrade system comprises:
a registration unit, configured to register a second network element and a third network element of the same network segment with a first network element, and store registration information in the first network element;
an upgrade package receiving unit for respectively transmitting three upgrade packages for upgrading the three network elements to the first network element;
the upgrade package distribution unit is used for respectively distributing the three upgrade packages in the first network element to the corresponding network elements;
the software version judging unit is used for judging whether the network elements are upgraded according to the software version of each network element and feeding back the result to the first network element; if the upgrade is required, uniformly triggering the upgrade by the management server; the first network element acquires the upgrading results of other types of network elements, and if the upgrading of all registered network elements is successful, the upgrading is judged to be successful.
Further, the software version judging unit, when being used for judging that the upgrade is to be performed, is configured to uniformly trigger the upgrade by the management server, and further includes:
the first network element upgrades the software version of the first network element;
if the upgrade is successful, the first network element informs the second network element and the third network element to upgrade the software version;
the first network element acquires the upgrading results of other types of network elements, and if all registered network elements are successfully upgraded, the upgrading success is judged.
Further, the display unit is configured to periodically obtain, by using the management server, upgrade states of all network elements on the first network element, and perform state display on each network element.
The technical scheme provided by the embodiment of the specification can comprise the following beneficial effects:
in the embodiment of the specification, the management server uniformly triggers the upgrade of each network element, so that the uniform management of the network element version is realized, the workload of upgrading the software version is greatly reduced, the human error is reduced, and the consistency of the version can be ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.
FIG. 1 is a block diagram of a distributed CP architecture according to embodiments of the present application;
FIG. 2 is a flow chart of a method of an embodiment of the present application;
fig. 3 is a system block diagram of an embodiment of the present application.
Detailed Description
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to any or all possible combinations including one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. Depending on the context, furthermore, the word "if" used may be interpreted as "at … …" or "at … …" or "in response to a determination".
An embodiment of the present application provides an upgrade method for a control and rotation separation distributed CP, as shown in fig. 1-2, including:
101: the first network element registers the second network element and the third network element of the same network segment, and stores registration information in the first network element;
as an example, the registration information may be stored in the first network element in the form of a list of network elements.
301: three upgrade packages for upgrading the three network elements are sent to the first network element;
501: the first network element distributes the three upgrade packages to the corresponding network elements respectively;
701: each network element judges whether to upgrade according to own software version and feeds back the result to the first network element;
901: if the upgrade is required, uniformly triggering the upgrade by the management server;
as one example, the steps may be included:
the first network element upgrades the software version of the first network element;
if the upgrade is successful, the first network element informs the second network element and the third network element to upgrade the software version;
the first network element acquires the upgrading results of other types of network elements, and if the upgrading of all registered network elements is successful, the upgrading is judged to be successful.
The first network element may acquire the upgrade results of other network elements by polling, or may be actively reported to the first network element by the other network elements. This may reduce invalid upgrade times.
1101: and judging whether all network elements are updated successfully by the first network element.
As a further optimization of the above embodiment, 1301: the management server periodically acquires the upgrading states of all the network elements on the first network element and displays the states of the network elements.
As an example of presentation of the status of each network element, as shown in table 1, it includes:
if the management server acquires that each network element is still in upgrading, displaying the state through the dynamic icon;
as described above, the network element status information in this example is shown in the network element list in a dynamic icon manner.
And if the management server acquires that each network element is updated, displaying the names of the successfully updated network elements and the new updated software version.
If the management server acquires that the network element fails to upgrade, the network element and the possible reasons for the failure are marked. As an example, if the management server acquires that the network element is not successfully upgraded, the network element which is not successfully upgraded is upgraded independently again.
The application provides two examples for upgrading network elements which are not successfully upgraded again independently.
Example 1: the management server triggers the first network element to upgrade, the first network element upgrade is successful, the first network element uniformly transmits upgrade notification messages to all the second and third network elements, and each second and third network element checks whether the own software version is upgraded. If not, upgrading is carried out; if so, no upgrade is required.
Example 2: the management server triggers the first network element to upgrade, the first network element upgrades successfully, the first network element sends upgrade notification messages to the second network element and the third network element which are not upgraded, and the second network element and the third network element which are not upgraded individually upgrade.
TABLE 1
In the above embodiment, there are at least two network elements, and a master and slave backup is performed, so as to avoid that the functions of the master and slave devices are affected at the same time when a server serving as a network element fails.
In the above embodiment, before the first network element registers the second network element and the third network element of the same network segment, step 001 may be added: the same network segment is configured for the internal interfaces of the three network elements.
According to the embodiment of the invention, the network element is uniformly triggered to be updated by the management server, so that the uniform management of the network element version is realized, the workload of upgrading the software version is greatly reduced, the personal error is reduced, and the consistency of the version can be ensured.
In this embodiment, the so-called forwarding control separation breaks through the control and forwarding integrated structure of the existing physical BRAS (Broadband Remote Access Server, broadband access server) equipment, and selects a suitable network element bearing control plane and forwarding plane. The transfer control separation system is composed of a BRAS CP resource pool (hereinafter referred to as CP) for processing the control surface function and a BRASTP (hereinafter referred to as DP) for processing the transfer surface function. The CP (Control Plane) and DP (Data Plane) are deployed at different physical locations in the network, and the CP and DP are cooperatively matched with each other, so that all functions of the original single BRAS device can be realized, and a physical architecture which is easier to laterally expand and a software architecture which is easier to support new service development are provided. The control plane CP is mainly used for the original control function of the BRAS, and is responsible for processing PPPOE/IPOE control messages so as to trigger the control messages to establish and maintain a user session table and to interactively authenticate with a remote AAA system. After the user authentication is passed, the CP integrates the second and third layer information of the user and the service information to form a flow table, and the flow table is issued to the DP through an Openflow interface to guide the DP to independently forward the subsequent user data message.
The DP gathers in the original forwarding function of BRAS, does not carry on any analysis to PPPOE/IPOE control message, pass it to CP through VXLAN tunnel, after CP authentication is finished and the flow table is issued, DP converts the flow table into hardware table item that can guide forwarding, the subsequent user data message is processed by DP directly.
After the implementation of the transfer control separation scheme, only the CP needs to be presented to an external service system (Radius server, DHCP server, policy server, portal server and the like), so that a plurality of DPs are stripped, and the service system does not need to sense.
The distributed CP in the embodiment of the present application refers to a vbas-CP distributed architecture, actually further defines the function of each network element, divides the function originally concentrated to the control plane CP into different functional network elements, and implements the control plane of the BRAS service (PPPOE, IPOE, L TP, CGN, etc.). Each network element has definite functions and is matched with each other to finish a series of functions such as user online, authentication, charging and the like.
The vBRAS-CP under the distributed architecture mainly comprises three network elements of CTRL-VM, BRAS-VM and FWD-VM, and the architecture is shown in figure 2. Wherein, the CTRL-VM is responsible for network element management, unified configuration management, unified address management, unified license management, CP disaster recovery, elastic expansion and contraction, DP network element management and the like which belong to the same vBRAS-CP. The BRAS-VM is responsible for remote interface management, user management, access control, authentication, authorization, accounting, DP data backup, and the like. The FWD-VM is responsible for communication and message distribution with DP network elements, such as Radius, WEB information distribution, etc. The first network element in the embodiment of the distributed architecture vbas-CP refers to CTRL-VM, and the second and third network elements refer to BRAS-VM and FWD-VM, respectively. In general, in a live condition, the CTRL-VM, the BRAS-VM and the FWD-VM are stacked in pairs to form a main device and a standby device, and the main device and the standby device must be distributed and deployed on different servers so as to avoid that the functions of the main device and the standby device are simultaneously influenced when one server fails.
The management server in the embodiment of the present application refers to a VNF Manager, and is responsible for managing the VNF lifecycle. The system is NFV deployment, configuration, life cycle management and version management software conforming to ETSI NFV specifications, can manage a plurality of physical servers, flexibly configures required resources according to user service requirements, and completes the creation and deployment of virtual network elements. Meanwhile, the VNF Manager can establish connection with the network element through the NETCONF protocol, and the required initial configuration is issued to the network element, so that the management platform can manage the life cycle of the network element after the network element is started. In addition, the VNF Manager realizes the version management of the network element by transmitting the required upgrade file to the network element and other trigger actions.
The embodiment of the application also provides an upgrade system of the control-rotation separation distributed CP, as shown in fig. 3:
the upgrade system at least comprises a first network element, a second network element and a third network element according to the functions, and the upgrade system comprises:
a registration unit, configured to register a second network element and a third network element of the same network segment with a first network element, and store registration information in the first network element;
an upgrade package receiving unit for respectively transmitting three upgrade packages for upgrading the three network elements to the first network element;
the upgrade package distribution unit is used for respectively distributing the three upgrade packages in the first network element to the corresponding network elements;
the software version judging unit is used for judging whether the network elements are upgraded according to the software version of each network element and feeding back the result to the first network element; if the upgrade is required, uniformly triggering the upgrade by the management server; the first network element acquires the upgrading results of other types of network elements, and if the upgrading of all registered network elements is successful, the upgrading is judged to be successful.
As an optimized embodiment, the software version judging unit, when being used for judging that if the upgrade is to be performed, is configured to uniformly trigger the upgrade by the management server, further includes:
the first network element upgrades the software version of the first network element;
if the upgrade is successful, the first network element informs the second network element and the third network element to upgrade the software version;
the first network element acquires the upgrading results of other types of network elements, and if the upgrading of all registered network elements is successful, the upgrading is judged to be successful.
The above embodiment further includes a display unit, configured to periodically obtain, by using the management server, an upgrade status of all network elements on the first network element, and perform status display on each network element.
Based on the same application conception as the above method, the embodiments of the present application provide a service processing system,
based on the same application concept as the above method, an electronic device is provided in an embodiment of the present application, where the electronic device may be a front-end device or an authentication device in the above embodiment, and the electronic device includes: a processor and a machine-readable storage medium storing machine-executable instructions executable by the processor; the processor is configured to execute machine executable instructions to implement the service processing method of the foregoing embodiment, and the flow of the service processing method is not described in detail in this embodiment.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.
Moreover, 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.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
It is to be understood that the present description is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The foregoing description of the preferred embodiments is provided for the purpose of illustration only and is not intended to limit the scope of the disclosure, since any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.
Claims (10)
1. An upgrade method of a control-switching separated distributed CP, under the control-switching separated distributed architecture, the function of a control node CP needs a plurality of network elements, which is characterized in that,
the first network element registers the second network element and the third network element of the same network segment, and stores registration information in the first network element;
three upgrade packages for upgrading the three network elements are sent to the first network element;
the first network element distributes the three upgrade packages to the corresponding network elements respectively;
each network element judges whether to upgrade according to own software version and feeds back the result to the first network element;
if the upgrade is required, uniformly triggering the upgrade by the management server;
and judging whether all network elements are updated successfully or not by the first network element.
2. The method for upgrading a control-rotation separated distributed CP of claim 1, wherein,
if the upgrade is to be performed, the unified triggering of the upgrade by the management server comprises:
the first network element upgrades the software version of the first network element;
if the upgrade is successful, the first network element informs the second network element and the third network element to upgrade the software version;
and the first network element acquires the upgrading results of other types of network elements, and if the upgrading of all registered network elements is successful, the upgrading is judged to be successful.
3. The method for upgrading a control-rotation separated distributed CP of claim 2, wherein,
the management server periodically acquires the upgrading states of all the network elements on the first network element and displays the states of the network elements.
4. The method for upgrading a control-rotation separated distributed CP according to claim 3, wherein,
if the management server acquires that each network element is still in upgrading, displaying the state through dynamic icons;
if the management server acquires that each network element is updated, names of the successfully updated network elements and new updated software versions are displayed;
and if the management server acquires that the network element fails to upgrade, displaying and marking the network element and the possible reasons of failure.
5. The method for upgrading a control-rotation separated distributed CP of claim 4, wherein,
if the management server acquires that the network element is not successfully upgraded, the network element which is not successfully upgraded is independently upgraded again.
6. The method for upgrading a control-rotation separated distributed CP of claim 1, wherein,
at least two network elements are used as master and slave backups.
7. The method for upgrading a control-rotation separated distributed CP of claim 1, wherein,
before the first network element registers the second network element and the third network element of the same network segment, the same network segment is configured for the internal interfaces of the three network elements.
8. An upgrade system of a control-change separated distributed CP, under the control-change separated distributed architecture, the function of a control node CP needs a plurality of network elements, which is characterized in that,
the upgrade system at least comprises a first network element, a second network element and a third network element according to the function division, and the upgrade system comprises:
a registration unit, configured to register a second network element and a third network element of the same network segment with a first network element, and store registration information in the first network element;
an upgrade package receiving unit, configured to send three upgrade packages for upgrading three network elements to the first network element respectively;
the upgrade package distribution unit is used for respectively distributing the three-upgrade packages in the first network element to the corresponding network elements;
the software version judging unit is used for judging whether each network element is upgraded according to the software version of each network element and feeding back the result to the first network element; if the upgrade is required, uniformly triggering the upgrade by the management server; and the first network element acquires the upgrading results of other types of network elements, and if the upgrading of all registered network elements is successful, the upgrading is judged to be successful.
9. The system for upgrading a remote-controlled split distributed CP of claim 8, wherein,
the software version judging unit, when being used for judging that if the upgrade is to be performed, the unified triggering upgrade by the management server further comprises:
the first network element upgrades the software version of the first network element;
if the upgrade is successful, the first network element informs the second network element and the third network element to upgrade the software version;
and the first network element acquires the upgrading results of other types of network elements, and if all registered network elements are successfully upgraded, the upgrading is judged to be successful.
10. The system for upgrading a remote-controlled split distributed CP of claim 9, wherein,
the display unit is used for periodically acquiring the upgrading states of all the network elements on the first network element by the management server and displaying the states of the network elements.
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