CN111901705A - OMCI function virtualization system of OLT equipment - Google Patents

OMCI function virtualization system of OLT equipment Download PDF

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CN111901705A
CN111901705A CN202010539813.3A CN202010539813A CN111901705A CN 111901705 A CN111901705 A CN 111901705A CN 202010539813 A CN202010539813 A CN 202010539813A CN 111901705 A CN111901705 A CN 111901705A
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onu
vomci
instance
function
function instance
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CN111901705B (en
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丰晓东
王文超
张超
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China Information And Communication Technology Group Co ltd
Fiberhome Telecommunication Technologies Co Ltd
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China Information And Communication Technology Group Co ltd
Fiberhome Telecommunication Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/02—Standardisation; Integration
    • H04L41/0246—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols
    • H04L41/0266—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols using meta-data, objects or commands for formatting management information, e.g. using eXtensible markup language [XML]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0083—Testing; Monitoring

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer And Data Communications (AREA)

Abstract

The invention discloses an OMCI function virtualization system of OLT equipment, wherein a VOMCI access instance, a VOMCI function instance and an ONU state and command database are deployed in a cloud platform, an OLT sends an ONU management request to the VOMCI access instance, the VOMCI access instance is processed according to the type of the ONU management request, if the ONU object is an update request, the ONU state and command database are directly updated, and if the ONU service management request is, a proper VOMCI function instance is selected and the ONU service management request is forwarded to the VOMCI function instance for processing; when the VOMCI function instance processes an ONU service management request, whether the latest state data of the ONU is in a local memory is checked, if not, the latest state data of the ONU is searched and downloaded from an ONU state and command database, and in the process of processing the ONU service management request, the VOMCI function instance synchronizes the latest state data of the ONU to the ONU state and command database. The invention can obviously improve the high availability, load balance and continuous processing capacity of the OLT virtualization system.

Description

OMCI function virtualization system of OLT equipment
Technical Field
The invention belongs to the technical field of communication, and particularly relates to an OMCI function virtualization system of OLT equipment.
Background
Network communication equipment generally comprises special hardware and software, and NFV (Network function virtualization) generally separates part of software functions originally running on the special hardware from software running in the special hardware, and puts the software on a separate standard commercial server to run, thereby achieving the purposes of reducing the cost of the equipment and accelerating the speed of products and services to market. An OMCI (ONU Management and Control Interface) protocol of an OLT (Optical Line Terminal) is a Management protocol between a Gigabit-Capable Passive Optical Network (GPON) OLT and a GPON ONU (Optical Network Unit), and generally operates on a GPON Line card of the OLT, and each GPON Line card operates an OMCI function instance to manage all ONUs hooked under the Line card. After the OLT performs OMCI function virtualization, the functions are separated from the OLT and run on a standard commercial server (called VOMCI function instance) outside the OLT, and the OLT and the VOMCI function instance communicate with each other based on the network to jointly complete the original functions of the OLT.
In the prior art, an OLT and a VOMCI function instance generally use a mode that the OLT actively registers with a VOMCI function instance to tell information of the OLT that the VOMCI function instance needs to serve, an OLT is formed by the registration mode, and the OLT includes a strong binding relationship between its downstream ONU and a VOMCI function instance, that is, all ONUs managed under the OLT can only be processed by the VOMCI function instance, and when the VOMCI function instance fails, all ONUs under the OLT cannot be managed by OMCI until the function of the VOMCI function instance returns to normal. If an idle VOMCI function instance is newly added, the management of the relevant ONU cannot be performed instead of the VOMCI function instance, and the pending ONU service management request command which is not processed in the previous VOMCI function instance cannot be processed continuously, so that the high availability and load balancing of the whole system cannot be supported.
Disclosure of Invention
In view of the above defects or improvement needs in the prior art, the present invention provides an OMCI function virtualization system for an OLT device, which can significantly improve the high availability, load balancing, and connection processing capabilities of the system virtualized by the OLT.
In order to achieve the above object, the present invention provides an OMCI function virtualization system of an OLT device, including an OLT, an ONU, and a cloud platform, where a VOMCI access instance, a VOMCI function instance, and an ONU state and command database are deployed in the cloud platform, where:
the OLT is used for sending the ONU management request to the VOMCI access instance, the VOMCI access instance processes according to the type of the ONU management request, if the ONU object is an ONU object updating request, the ONU state and the command database are directly updated, and if the ONU object is an ONU service management request, a proper VOMCI function instance is selected and the ONU service management request is forwarded to the VOMCI function instance for processing; when the VOMCI function instance processes an ONU service management request, whether the latest state data of the ONU is in a local memory is checked, if not, the latest state data of the ONU is searched and downloaded from an ONU state and command database, and in the process of processing the ONU service management request, the VOMCI function instance synchronizes the latest state data of the ONU to the ONU state and command database.
In an embodiment of the present invention, the functions of the VOMCI access instance include:
(1) all the ONU management requests sent out by the OLT are processed or forwarded, each ONU management request sent out by the OLT is only sent to a VOMCI access instance, the VOMCI access instance directly processes or forwards the ONU management requests to a VOMCI function instance for processing according to the type of the ONU management requests, and the processing result of the VOMCI function instance is sent back to the OLT sending the ONU management requests;
(2) and maintaining the working states of all the VOMCI function instances, registering the VOMCI function instances when the VOMCI function instances are started, periodically reporting the capability information of the VOMCI function instances, and actively inquiring the capability information of the VOMCI function instances when the VOMCI access instances are required, thereby forming a basic information table of the VOMCI function instances.
In an embodiment of the present invention, when a VOMCI access instance detects that a processing capability of a VOMCI function instance fails, it is set to an unavailable state, where a manner of determining that the VOMCI function instance fails includes:
the VOMCI function instance does not actively report the capacity information in a period, or the reported capacity information indicates that the processing load of the VOMCI function instance exceeds the processing upper limit, and the VOMCI function instance is judged to be invalid; alternatively, the first and second electrodes may be,
the VOMCI access instance actively queries the capability information of the VOMCI function instance, but gets no response within the timeout period or gets a response within the timeout period, but the response information indicates that the VOMCI function instance has exceeded the upper limit of processing, and then determines that the VOMCI function instance is invalid.
In one embodiment of the invention, the functions of the VOMCI function instance include:
and after receiving the ONU service management request of the VOMCI access instance, the VOMCI function instance checks whether the execution environment of the ONU service management request is provided, if so, the ONU service management request is translated into an OMCI command sequence, and the OLT carried in the ONU service management request bears a transmission channel specified by the OMCI message channel parameter, thereby completing OMCI message interaction with the ONU, and generating an ONU service management response to be replied to the VOMCI access instance.
In one embodiment of the invention, the ONU status and command database is used for recording the basic information and status information of all ONUs in the system and recording the service management command information currently processed by each ONU in the system; when a VOMCI function instance works normally, the state information of each ONU processed by the VOMCI function instance and the command execution information of the current unfinished ONU service management request of the ONU are recorded in an ONU state and command database; when the VOMCI function instance fails, the ONU service management request is dispatched to a new VOMCI function instance to be processed, and the new VOMCI function instance recovers the current state and command execution information of the ONU to be processed from the ONU state and command database and carries out continuous processing.
In an embodiment of the present invention, an ONU management request sent outside an OLT is an ONU object update request, and processing the ONU object update request includes:
when the OLT finds the ONU, deletes the ONU, detects that the ONU is on-line or off-line, and authorizes or de-authorizes the ONU, the OLT sends an ONU object updating request to the VOMCI access instance, and the VOMCI access instance directly completes the processing of the request, namely, updates the corresponding ONU information in the ONU state and command database.
In an embodiment of the present invention, an ONU management request sent outside an OLT is an ONU service management request, and processing the ONU service management request includes:
the ONU service management request refers to that the OLT is used for configuring ONU service, inquiring ONU state or performance or giving an alarm; when the VOMCI access instance receives the ONU service management request, forwarding the request to an available VOMCI function instance for processing based on a VOMCI function instance distribution algorithm; and the VOMCI function instance processes the ONU service management request, generates an ONU service management response and returns the ONU service management response to the VOMCI access instance, and the VOMCI access instance forwards the response to the corresponding OLT.
In an embodiment of the present invention, the VOMCI function instance assignment algorithm includes:
the VOMCI access instance searches a relation table of the ONU and the VOMCI function instance according to the ONU global unique identifier in the ONU service management request message;
if a VOMCI function instance is found, inquiring availability of the VOMCI function instance in a basic information table of the VOMCI function instance, if the table records that the VOMCI function instance is not available, actively inquiring whether the VOMCI function instance is available by a VOMCI access instance, if a response is made and the response result indicates that the VOMCI function instance is available, confirming that the VOMCI function instance is available, otherwise, considering that the VOMCI function instance is not available, and if the VOMCI function instance is confirmed to be available, sending the ONU service management request to the VOMCI function instance;
if a VOMCI function instance cannot be found in the relationship table of the ONU and the VOMCI function instances, or the found VOMCI function instance is not available, finding an available VOMCI function instance with the lowest load from the basic information table of the VOMCI function instance, forwarding the ONU service management request to the VOMCI function instance, and updating the relationship table of the ONU and the VOMCI function instance.
In an embodiment of the present invention, the processing of the ONU service management request by the VOMCI function instance includes preparing an execution environment of the ONU service management request, which specifically includes:
when the VOMCI function example receives an ONU service management request, whether the local memory has the basic information and the state information of the ONU or not is searched according to the ONU global unique identifier;
and if not, downloading the state and command information of the ONU from the ONU state and command database.
If yes, checking whether the SYNC code in the ONU local state information is consistent with the SYNC code in the ONU state information in the ONU state and command database, if so, not acting, and if not, downloading the ONU basic information and state information from the ONU state and command database.
In an embodiment of the present invention, the processing of the ONU service management request by the VOMCI function instance includes executing an ONU service management request command, specifically:
the VOMCI function instance calculates an OMCI command interaction sequence required to be executed by the command according to the command name and the command parameters, and carries out OMCI interaction with an ONU hung under the OLT through the channel to complete the corresponding management function, and records the completion condition of the OMCI command interaction sequence into an ONU state and command database.
Generally, compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) the high availability, load balancing and continuous processing capacity of the OLT virtualization system are remarkably improved; through the capability detection and management of the VOMCI function instances by the VOMCI access instances, when a certain VOMCI function instance fails, the ONU service management request of the OLT can be forwarded to other appropriate VOMCI function instances for processing. And the problem that the ONU service management request of the OLT which is strongly bound with the single VOMCI function instance can not be processed due to the fault of the single VOMCI function instance is avoided. And the processing loads of a plurality of VOMCI function instances can be equalized.
(2) The large-scale deployment of the VOMCI function instances is facilitated, and any OLT and the ONU hung below the OLT do not need to establish a static binding relationship with one VOMCI function instance during the deployment. By taking the VOMCI access instance as an intermediary, the relationship between the OLT and the ONU hung below the OLT and the VOMCI function instance is dynamically constructed during operation.
Drawings
Fig. 1 is a schematic structural diagram of an OMCI function virtualization system of an OLT device according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a packet classification and a format of an ONU management request sent out by an OLT in an embodiment of the present invention;
fig. 3 is a flowchart of a method for selecting a VOMCI function instance by a VOMCI access instance according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for processing an ONU service management request by a VOMCI function instance according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1, the OMCI function virtualization system of the OLT device according to the embodiment of the present invention includes an OLT, an ONU, and a cloud platform, where a VOMCI access instance, a VOMCI function instance, and an ONU status and command database are deployed in the cloud platform.
The OLT is used for sending an ONU management request to a VOMCI access instance, the VOMCI access instance processes according to the type of the ONU management request, if the ONU object is an ONU object updating request, the ONU state and command database is directly updated, the ONU object is created, deleted and slightly updated in state, if the ONU object is an ONU service management request, a proper VOMCI function instance is selected and the ONU service management request is forwarded to the VOMCI function instance for processing (for example, if one VOMCI function instance processes the ONU before and the VOMCI function instance is in an available state, the VOMCI function instance is continuously selected, and if the VOMCI function instance is not in the available state, a VOMCI function instance with the lowest load is selected from other available VOMCI function instances). When the VOMCI function instance processes the ONU service management request, checking whether the latest status data of the ONU is in the local memory (for example, checking whether a SYNC code in the ONU local status information is consistent with a SYNC code in the ONU status information in the ONU status and command database, if so, indicating that the latest status data is in the local memory), if not, searching and downloading the latest status data of the ONU from the ONU status and command database, and in the process of processing the ONU service management request, the VOMCI function instance synchronizes the latest status data of the ONU to the ONU status and command database.
Example 2
In the OMCI function virtualization system of the OLT apparatus provided in the embodiment of the present invention, the VOMCI access instance has the following functions:
(1) all the ONU management requests sent out by the OLT are processed or forwarded, each ONU management request sent out by the OLT is only sent to the VOMCI access instance, the VOMCI access instance directly processes or forwards the ONU management requests to a VOMCI function instance for processing according to the type of the ONU management requests, and the processing result of the VOMCI function instance is sent back to the OLT sending the ONU management requests.
(2) And maintaining the working state of all the VOMCI function instances.
The VOMCI function instance registers with the VOMCI access instance at start-up. And periodically reporting the capability information (the number of the currently processed ONUs, the utilization rate of CPU and memory resources, etc.). On the other hand, the VOMCI access instance actively queries the capability information of the VOMCI function instance when needed. By these two methods, a VOMCI function instance basic information table is formed.
When the VOMCI access instance detects that the processing capability of a certain VOMCI function instance is invalid, the VOMCI access instance is set to be in an unavailable state. Specifically, there may be two detection modes: one is that the VOMCI function instance does not actively report the capability information in one period, or indicates in the reported capability information that the processing load exceeds the processing upper limit, it is determined that the VOMCI function instance is invalid. The other one is; the mode is that the VOMCI access instance actively inquires the capability information of the VOMCI function instance, but does not get a response within the timeout time or gets a response within the timeout time, but the response information indicates that the VOMCI function instance has exceeded the processing upper limit, and then the VOMCI function instance is determined to be invalid.
The following describes a procedure for managing VOMCI function instances by a VOMCI access instance as a specific example:
after a VOMCI function instance is started, it will periodically send capability information to the VOMCI access instance, and the contents include: the number of processed ONU, the utilization rate of CPU and the utilization rate of memory;
the VOMCI access instance maintains a VOMCI function instance basic information table, periodically updates the above information, and sets the state of the VOMCI function instance to be invalid when the capability information sent by the VOMCI function instance is not received in a period (preset).
Example 3
In the OMCI function virtualization system of the OLT apparatus provided in the embodiment of the present invention, the function of the VOMCI function instance is as follows:
after receiving the ONU service management request of the VOMCI access instance, the VOMCI function instance checks whether the execution environment of the ONU service management request is provided, if so, the ONU service management request is translated into 1 to a plurality of OMCI command sequences, and the OMCI message interaction with the ONU (transferred by the OLT) is completed through a transmission channel appointed by an OLT bearing OMCI message channel parameter carried in the ONU service management request. And generating an ONU service management response to reply to the VOMCI access instance.
Example 4
In the OMCI function virtualization system of the OLT apparatus provided in the embodiment of the present invention, the functions of the ONU state and command database are as follows: (1) recording basic information of all ONUs in the system; (2) recording the state information of all ONUs in the system; (3) and recording the service management command information currently processed by each ONU in the system.
When a VOMCI function instance works normally, the status information of each ONU that it processes and the command execution information of the current unfinished ONU service management request of the ONU are recorded in the ONU status and command database. When the VOMCI function instance fails, the ONU service management request is dispatched to a new VOMCI function instance to be processed, and the new VOMCI function instance recovers the current state and command execution information of the ONU to be processed from the ONU state and command database and carries out continuous processing.
The information in the ONU status and command database includes:
(1) OLT basic information
1) OLT global unique identifier
2) OLT type and description
3) OLT carries IP address, port and protocol type of OMCI message
(2) Basic information of ONU
1) Global unique identification of OLT (optical line terminal) where ONU (optical network Unit) is located
2) The ONU comprises a line card slot number of an OLT where the ONU is located, a PON port number and an ONU authorization number.
3) ONU serial number
The information forms ONU global unique identifier
(3) Status information of ONU
1) Authorization status, on-line and off-line status;
2) OMCI ME information of ONU;
(4) the service management command information currently processed by each ONU in the system comprises:
1) the name of the command and the parameters of the command,
2) the successful OMCI command sequence number is executed.
Example 5
In the OMCI function virtualization system of the OLT apparatus provided in the embodiment of the present invention, classification and processing of an ONU management request sent by the OLT:
(1) ONU object update request: and when the OLT finds the ONU, deletes the ONU, detects that the ONU is on-line or off-line, and authorizes or de-authorizes the ONU, the OLT sends an ONU object updating request to the VOMCI access instance. The VOMCI access instance directly completes the processing of such requests, i.e. updates the corresponding ONU information in an "ONU status and command database". Specifically, the updating includes creating, deleting, or modifying, and the ONU information includes: identification information of the ONU and ONU status information.
(2) And ONU service management request: the OLT is used for configuring ONU services, inquiring the state or performance of the ONU, or sending an alarm and other ONU service management requests. The ONU management request needs to be completed by carrying out OMCI message interaction with the ONU. When the VOMCI access instance receives the ONU service management request, the VOMCI access instance forwards the ONU service management request to an available VOMCI function instance for processing based on a VOMCI function instance allocation algorithm.
The following describes, by a specific example, an ONU management request sent outside the OLT and received by the VOMCI access example, as shown in fig. 2, the ONU management request sent outside the OLT and received by the VOMCI access example may be divided into two types: an ONU object update request and an ONU traffic management request. Wherein:
(1) the ONU object update request may contain the following information:
1) a request sequence number;
2) ONU global unique identification:
3) ONU object update command name: creating, deleting and updating the state;
4) ONU object state: on-line status (on-line, off-line), authorized status (authorized, unauthorized);
the ONU management request can be completed without carrying out OMCI message interaction with the ONU, so that when the VOMCI access example receives the request, an ONU is directly created in an ONU state and command database, or the ONU is deleted, or the state of the ONU is updated.
(2) The ONU traffic management request may contain the following information:
1) a request sequence number;
2) ONU global unique identifier
3) ONU service management request command name: such as VEIP (Virtual Ethernet interface point) service configuration, multicast service configuration, TR069 channel configuration, etc.
Wherein TR069 refers to technical report069, i.e., technical report069 (TR069 represents a collection of management protocols and associated specifications)
4) ONU service management request parameters: parameters required for each command;
5) channel parameters for carrying OMCI messages: the OLT is used for bearing a transmission channel IP, a protocol and a port of the OMCI message.
The VOMCI function instance and the OLT interact OMCI messages through the channel, and the OLT forwards the OMCI messages to the corresponding ONU.
Example 6
In the OMCI function virtualization system of the OLT apparatus provided in the embodiment of the present invention, when the ONU management request is an ONU service management request, the VOMCI access instance selects an appropriate VOMCI function instance and forwards the ONU service management request to the VOMCI function instance for processing:
the VOMCI access instance searches a relation table of the ONU and the VOMCI function instance according to the ONU global unique identifier in the ONU service management request message;
if a VOMCI function instance is found, inquiring availability of the VOMCI function instance in a basic information table of the VOMCI function instance, if the table records that the VOMCI function instance is not available, actively inquiring whether the VOMCI function instance is available by a VOMCI access instance, if a response is made and the response result indicates that the VOMCI function instance is available, confirming that the VOMCI function instance is available, otherwise, considering that the VOMCI function instance is not available, and if the VOMCI function instance is confirmed to be available, sending the ONU service management request to the VOMCI function instance;
if a VOMCI function instance cannot be found in the relationship table of the ONU and the VOMCI function instances, or the found VOMCI function instance is not available, finding an available VOMCI function instance with the lowest load from the basic information table of the VOMCI function instance, forwarding the ONU service management request to the VOMCI function instance, and updating the relationship table of the ONU and the VOMCI function instance.
Specifically, as shown in fig. 3, the algorithm for the VOMCI access instance to dispatch the ONU management request (VOMCI function instance assignment algorithm) includes:
s31, when the OLT needs to configure and manage the ONU, sending an ONU service management request to the VOMCI access instance;
s32, the VOMCI access instance searches a relation table of the ONU and the VOMCI function instance according to the ONU global unique identifier in the ONU service management request message;
s33, judging whether a VOMCI function instance can be found, if so, turning to the step S404, otherwise, turning to the step;
s34, checking whether the VOMCI function instance is available in the basic information table of the VOMCI function instance, if so, turning to the step S38, otherwise, turning to the step S35;
s35, actively inquiring whether the VOMCI function instance is available, if yes, turning to the step S38, and if not, turning to the step S36;
specifically, the VOMCI access instance actively queries whether the VOMCI function instance is available through a communication interface between the VOMCI access instance and the VOMCI function instance, if a response is provided and the response result indicates that the VOMCI function instance is available, the VOMCI function instance is confirmed to be available, otherwise, the VOMCI function instance is considered to be unavailable;
s36, selecting an available VOMCI function instance with the lowest load from the basic information table of the VOMCI function instance;
s37, updating the relationship between the ONU and the VOMCI function instance;
and S38, forwarding the ONU service management request to the VOMCI function instance for processing.
And when the VOMCI function instance processes the ONU service management request, generating an ONU service management response, returning the ONU service management response to the VOMCI access instance, and forwarding the response to the corresponding OLT by the VOMCI access instance.
Example 7
In the OMCI function virtualization system of the OLT apparatus provided in the embodiment of the present invention, the processing of the ONU service management request by the VOMCI function instance includes:
1) execution environment for preparing ONU service management request
When the VOMCI function example receives an ONU service management request, whether the local memory has the basic information and the state information of the ONU or not is searched according to the ONU global unique identifier;
if not, the state and command information of the ONU is downloaded from the ONU state and command database.
If yes, checking whether the SYNC code in the ONU local state information is consistent with the SYNC code in the ONU state information in the ONU state and command database, if so, not acting, and if not, downloading the ONU basic information and state information from the ONU state and command database.
2) Executing ONU service management request command
The VOMCI function instance calculates an OMCI command interaction sequence required to be executed by the command according to the command name and the command parameters, and carries out OMCI interaction with an ONU hung under the OLT through the channel to complete the corresponding service management function, and records the completion condition of the OMCI command interaction sequence into an ONU state and command database.
The following describes a processing procedure of the VOMCI function instance on an ONU service management request by using a specific example, as shown in fig. 4:
s41, when the VOMCI function instance receives an ONU service management request, according to the ONU global unique identifier in the ONU service management request, searching whether the local memory has the basic information and the state information of the ONU, if so, turning to the step S42, otherwise, turning to the step S43;
s42, checking whether SYNC code in ONU local state information is consistent with SYNC code in ONU state and command database, if yes, turning to step S44, otherwise, turning to step S43;
s43, downloading ONU basic information and state information from the ONU state and command database;
s44, mapping the ONU service management request into an OMCI command interaction sequence;
s45, establishing a transmission channel with the OLT through a channel specified by the OMCI bearer channel parameter in the ONU service management request message;
s46, completing OMCI message interaction between the VOMCI function instance and the OLT or the ONU;
and S47, returning a VOMCI access instance ONU service management response.
Further, the method also comprises the step of refreshing the state of the ONU and the state and the command execution information of the ONU in a command database, specifically, when the ONU service management request is processed, if the OMCI ME information of the ONU is changed, the VOMCI function instance refreshes data to the 'ONU state and command database' by taking the ONU global unique identifier as a key value;
in the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. The OMCI function virtualization system of the OLT equipment is characterized by comprising an OLT, an ONU and a cloud platform, wherein a VOMCI access instance, a VOMCI function instance and an ONU state and command database are deployed in the cloud platform, and the OMCI function virtualization system comprises:
the OLT is used for sending the ONU management request to the VOMCI access instance, the VOMCI access instance processes according to the type of the ONU management request, if the ONU object is an ONU object updating request, the ONU state and the command database are directly updated, and if the ONU object is an ONU service management request, a proper VOMCI function instance is selected and the ONU service management request is forwarded to the VOMCI function instance for processing; when the VOMCI function instance processes an ONU service management request, whether the latest state data of the ONU is in a local memory is checked, if not, the latest state data of the ONU is searched and downloaded from an ONU state and command database, and in the process of processing the ONU service management request, the VOMCI function instance synchronizes the latest state data of the ONU to the ONU state and command database.
2. The OMCI function virtualization system of an OLT apparatus of claim 1, wherein the functions of the VOMCI access instance comprise:
(1) all the ONU management requests sent out by the OLT are processed or forwarded, each ONU management request sent out by the OLT is only sent to a VOMCI access instance, the VOMCI access instance directly processes or forwards the ONU management requests to a VOMCI function instance for processing according to the type of the ONU management requests, and the processing result of the VOMCI function instance is sent back to the OLT sending the ONU management requests;
(2) and maintaining the working states of all the VOMCI function instances, registering the VOMCI function instances when the VOMCI function instances are started, periodically reporting the capability information of the VOMCI function instances, and actively inquiring the capability information of the VOMCI function instances when the VOMCI access instances are required, thereby forming a basic information table of the VOMCI function instances.
3. The OMCI function virtualization system of an OLT apparatus according to claim 2, wherein the VOMCI access instance is set to an unavailable state after detecting that the processing capability of a VOMCI function instance has failed, and wherein determining that the VOMCI function instance has failed comprises:
the VOMCI function instance does not actively report the capacity information in a period, or the reported capacity information indicates that the processing load of the VOMCI function instance exceeds the processing upper limit, and the VOMCI function instance is judged to be invalid; alternatively, the first and second electrodes may be,
the VOMCI access instance actively queries the capability information of the VOMCI function instance, but gets no response within the timeout period or gets a response within the timeout period, but the response information indicates that the VOMCI function instance has exceeded the upper limit of processing, and then determines that the VOMCI function instance is invalid.
4. The OMCI function virtualization system of an OLT apparatus of claim 1 or 2, wherein the functions of the VOMCI function instance comprise:
and after receiving the ONU service management request forwarded by the VOMCI access instance, the VOMCI function instance checks whether the execution environment of the ONU service management request is provided, if so, the ONU service management request is translated into an OMCI command sequence, and the OLT carried in the ONU service management request bears a transmission channel specified by the OMCI message channel parameter, thereby completing OMCI message interaction with the ONU, and generating an ONU service management response to be replied to the VOMCI access instance.
5. The OMCI function virtualization system of the OLT apparatus of claim 1 or 2, wherein the ONU status and command database is configured to record basic information of all ONUs in the system, status information, and information of service management commands currently being processed by each ONU in the system; when a VOMCI function instance works normally, the state information of each ONU processed by the VOMCI function instance and the command execution information of the current unfinished ONU service management request of the ONU are recorded in an ONU state and command database; when the VOMCI function instance fails, the ONU service management request is dispatched to a new VOMCI function instance to be processed, and the new VOMCI function instance recovers the current state and command execution information of the ONU to be processed from the ONU state and command database and carries out continuous processing.
6. The OMCI function virtualization system of an OLT apparatus as claimed in claim 1 or 2, wherein the ONU management request issued outside the OLT is an ONU object update request, and the processing of the ONU object update request comprises:
when the OLT finds the ONU, deletes the ONU, detects that the ONU is on-line or off-line, and authorizes or de-authorizes the ONU, the OLT sends an ONU object updating request to the VOMCI access instance, and the VOMCI access instance directly completes the processing of the request, namely, updates the corresponding ONU information in the ONU state and command database.
7. The OMCI function virtualization system of an OLT apparatus as claimed in claim 1 or 2, wherein the ONU management request issued outside the OLT is an ONU service management request, and the processing of the ONU service management request comprises:
the ONU service management request refers to that the OLT is used for configuring ONU service, inquiring ONU state or performance or giving an alarm; when the VOMCI access instance receives the ONU service management request, forwarding the request to an available VOMCI function instance for processing based on a VOMCI function instance distribution algorithm; and the VOMCI function instance processes the ONU service management request, generates an ONU service management response and returns the ONU service management response to the VOMCI access instance, and the VOMCI access instance forwards the response to the corresponding OLT.
8. The OMCI function virtualization system of an OLT apparatus of claim 7, wherein the VOMCI function instance assignment algorithm comprises:
the VOMCI access instance searches a relation table of the ONU and the VOMCI function instance according to the ONU global unique identifier in the ONU service management request message;
if a VOMCI function instance is found, inquiring availability of the VOMCI function instance in a basic information table of the VOMCI function instance, if the table records that the VOMCI function instance is not available, actively inquiring whether the VOMCI function instance is available by a VOMCI access instance, if a response is made and the response result indicates that the VOMCI function instance is available, confirming that the VOMCI function instance is available, otherwise, considering that the VOMCI function instance is not available, and if the VOMCI function instance is confirmed to be available, sending the ONU service management request to the VOMCI function instance;
if a VOMCI function instance cannot be found in the relationship table of the ONU and the VOMCI function instances, or the found VOMCI function instance is not available, finding an available VOMCI function instance with the lowest load from the basic information table of the VOMCI function instance, forwarding the ONU service management request to the VOMCI function instance, and updating the relationship table of the ONU and the VOMCI function instance.
9. The OMCI function virtualization system of an OLT apparatus as claimed in claim 1 or 2, wherein the processing of the ONU service management request by the VOMCI function instance includes preparing an execution environment for the ONU service management request, specifically:
when the VOMCI function example receives an ONU service management request, whether the local memory has the basic information and the state information of the ONU or not is searched according to the ONU global unique identifier;
and if not, downloading the state and command information of the ONU from the ONU state and command database.
If yes, checking whether the SYNC code in the ONU local state information is consistent with the SYNC code in the ONU state information in the ONU state and command database, if so, not acting, and if not, downloading the ONU basic information and state information from the ONU state and command database.
10. The OMCI function virtualization system of an OLT apparatus of claim 1 or 2, wherein the processing of the ONU service management request by the VOMCI function instance includes executing an ONU service management request command, specifically:
the VOMCI function instance calculates an OMCI command interaction sequence required to be executed by the command according to the command name and the command parameters, and carries out OMCI interaction with an ONU hung under the OLT through the channel to complete the corresponding management function, and records the completion condition of the OMCI command interaction sequence into an ONU state and command database.
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