CN106506664A - A kind of method and apparatus of server load balancing - Google Patents
A kind of method and apparatus of server load balancing Download PDFInfo
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- CN106506664A CN106506664A CN201611033977.9A CN201611033977A CN106506664A CN 106506664 A CN106506664 A CN 106506664A CN 201611033977 A CN201611033977 A CN 201611033977A CN 106506664 A CN106506664 A CN 106506664A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/287—Remote access server, e.g. BRAS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1029—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers using data related to the state of servers by a load balancer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Computer And Data Communications (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application embodiment provides a kind of method and apparatus of server load balancing, uneven with the load balancing for solving the problems, such as existing BRAS, realizes the load balancing of BRAS.The method can apply to connect in the subscriber's main station of the Internet by remote access servers BRAS, including：Sending and finding start message PADI, proposal message PADO is actively discovered to trigger the BRAS for receiving PADI messages feedbacks, wherein, the PADO carries BRAS currently corresponding load parameters；Receive the PADO；According to the PADO, the load parameter of corresponding BRAS is determined；According to the load parameter, the BRAS for accessing is determined.
Description
Technical field
The application is related to networking technology area, more particularly to a kind of method and apparatus of server load balancing.
Background technology
Broadband Remote Access Server (Broadband Remote Access Server, BRAS) is towards broadband network
The access gateway of application, it are located at the edge of network, there is provided broadband inserting service, realize the convergence and forwarding of multiple business.
In a network, subscriber's main station is by point-to-point protocol (the Point to Point on broadcast transmission Ethernet
Protocol over Ethernet, PPPoE) be actively discovered starting (PPPoE Active Discovery Initiation,
PADI) message, it is the BRAS of its distribution address to find.When there are multiple BRAS on network, each BRAS is receiving PADI
After message, can all respond PPPoE and proposal (PPPoE Active Discovery Offer, PADO) message is actively discovered to user
Main frame.Subscriber's main station is just specified access server to communicate after receiving first PADO messages.
Obviously, current load sharing schemes, are responded at first according to which platform BRAS, follow-up just specified BRAS certifications,
And follow-up flowing of access also walks the BRAS.So, the flowing of access sent by subscriber's main station is all partial to toward high performance clothes
Walk on business device, cause each server loading sharing that there is performance difference uneven.
Content of the invention
In view of the above problems, it is proposed that the application embodiment overcomes the problems referred to above or at least part of to provide one kind
A kind of method of server load balancing that solves the above problems and a kind of device of server load balancing accordingly, to solve
The uneven problem of the load balancing of certainly existing BRAS, realizes the load balancing of BRAS.
In order to solve the above problems, the application embodiment discloses a kind of method of server load balancing, the method
It is applied to connect in the subscriber's main station of the Internet by remote access servers BRAS, methods described includes：
Send and find start message PADI, proposal report is actively discovered to trigger the BRAS for receiving PADI messages feedbacks
Literary PADO, wherein, the PADO carries BRAS currently corresponding load parameters；
Receive the PADO；
According to the PADO, the load parameter of corresponding BRAS is determined；
According to the load parameter, the BRAS for accessing is determined.
The application embodiment also discloses a kind of method of server load balancing, and the method is applied to distance connection clothes
In business device BRAS, including：
When discovery start message PADI is received, generate and be actively discovered proposal message PADO, wherein, the PADO is carried
The current corresponding load parameters of BRAS；
The PADO is sent to subscriber's main station, access is determined to trigger the subscriber's main station according to the PADO
BRAS.
The application embodiment also discloses a kind of device of server load balancing, and the device is applied to connect by distal end
Enter in the subscriber's main station of server B RAS connection the Internet, including：
Message sending module, finds start message PADI for sending, to trigger the BRAS for receiving the PADI messages
Feedback is actively discovered proposal message PADO, and wherein, the PADO carries BRAS currently corresponding load parameters；
Receiver module, for receiving the PADO；
Load parameter determining module, for the PADO received according to the receiver module, determines the load of corresponding BRAS
Parameter；
Server determining module, for according to the load parameter, determining the BRAS for accessing.
The application embodiment also discloses a kind of device of server load balancing, and the device is applied to distance connection clothes
In business device BRAS, including：
Message generation module, for when discovery start message PADI is received, generating and being actively discovered proposal message PADO,
Wherein, the PADO carries BRAS currently corresponding load parameters；
Message sending module, for the PADO is sent to subscriber's main station, to trigger the subscriber's main station according to described
PADO determines the BRAS for accessing.
The application embodiment includes advantages below：
In the application embodiment, it is extended by the proposal message PADO that is actively discovered sent by BRAS, so as to
BRAS currently corresponding load parameters can be increased in PADO so that subscriber's main station can determine corresponding according to the PADO for receiving
The load parameter of BRAS, you can the loading condition current to determine each BRAS, and access can be determined according to load parameter
BRAS, you can based on the current loading conditions of each BRAS, to choose the BRAS of suitable access, and then customer flow collection can be avoided
In cause the high-performance BRAS overload operation in high performance BRAS, solve in prior art each BRAS loads in network
Share the problem of inequality.
Description of the drawings
The step of Fig. 1 is a kind of method embodiment of server load balancing of the application flow chart；
Fig. 2 is the schematic diagram that subscriber's main station accesses the Internet by the BRAS of distal end；
The step of Fig. 3 is the method embodiment of another kind of server load balancing of the application flow chart；
The step of Fig. 4 is the method embodiment of another server load balancing of the application flow chart；
Fig. 5 is a kind of structured flowchart of server device embodiments in a balanced way of the application；
Fig. 6 A are the structured flowcharts of another kind of server device embodiments in a balanced way of the application；
Fig. 6 B are the structured flowcharts of another kind of server device optional embodiment in a balanced way of the application.
Specific embodiment
Understandable for enabling the above-mentioned purpose of the application, feature and advantage to become apparent from, below in conjunction with the accompanying drawings and concrete real
Apply mode to be described in further detail the application.
In actual treatment, inventors herein have recognized that existing subscriber's main station after first PADO messages are received just
The BRAS for sending the PADO messages is directly defined as the BRAS for accessing, causes customer flow to concentrate on a certain high property in network
The BRAS of energy, that is, cause the uneven problem of server loading sharing in network.
One of core idea of the application embodiment is that currently corresponding load is joined to increase BRAS in PADO messages
Number so that subscriber's main station can determine the current load parameters of corresponding BRAS according to PADO messages, and can be according to each BRAS
Load parameter determine its selected BRAS for accessing, such that it is able to avoid the flowing of access of subscriber's main station from concentrating on high-performance
BRAS, solves the problems, such as that the load balancing of existing BRAS is uneven, that is, realizes the load balancing of BRAS.
With reference to Fig. 1, show the application a kind of server load balancing method embodiment the step of flow chart.Should
Method specifically can apply to connect in the subscriber's main station of the Internet by far-end server BRAS, can specifically include following step
Suddenly：
Step 102, sends and finds start message PADI, is actively sent out with triggering the BRAS for receiving PADI messages feedbacks
Now propose message PADO.
Wherein, being actively discovered proposal message PADO portabilities has BRAS currently corresponding load parameters.The load parameter can
The loading condition current for determining BRAS, such as can determine the number of users of the current connections of BRAS, determines that BRAS is current
Memory usage, central processing unit (Central Processing Unit, CPU) occupancy etc..
It should be noted that point-to-point protocol (the Point to Point Protocol on Ethernet
Ethernet, PPPoE) carrying point-to-point connection protocol (Point to Point Protocol, PPP) over ethernet is referred to,
It is connected into the Internet by remote access servers using Ethernet by a large number of users main frame network consisting
(Internet), and to each subscriber's main station for accessing control, billing function are realized.As shown in Fig. 2 the user in LAN
Main frame can be connected with the BRAS of distal end by middle Layer2 switching machine equipment, to access Internet.
The subscriber's main station of the application embodiment can specifically include the terminal unit used by user, such as personal computer
(Personal Computer, PC), panel computer, smart mobile phone etc..When a subscriber's main station wants to start one
During PPPOE sessions, it can on network broadcast transmission PADI, find BRAS.Each BRAS on network uses householder receiving
After the PADI sent by machine, the PADI can be responded, to subscriber's main station feedback PADO, with trigger the subscriber's main station according to
Server B RAS for accessing is determined according to the PADO.
Step 104, receives the PADO.
Step 106, according to the PADO, determines the load parameter of corresponding BRAS.
In the application embodiment, subscriber's main station can receive in the network PADO sent by each BRAS, and can be with
Parsed by the PADO to receiving, determine the load parameter of corresponding BRAS, also i.e., it is possible to adopt the load that PADO is carried
The current loading conditions of each BRAS of parameter determination, to choose the BRAS accessed required for which.
Step 108, the BRAS accessed according to the load parameter, determination.
In the application embodiment, subscriber's main station can determine that by carrying the PADO of load parameter BRAS is current and bear
Load situation, and determine the BRAS accessed selected by which based on the load parameter, i.e., selected based on the current loading conditions of each BRAS
The BRAS of access, such that it is able to avoid the BRAS for accessing overload operation, it is to avoid flowing of access concentrates on high performance BRAS
And cause the situation of the BRAS overload operations, realize the purpose of BRAS load balancing in network.
Wherein in an embodiment, subscriber's main station can adopt the load parameter that PADO is carried to determine and send the PADO
BRAS whether be in overload operation, so that in the non-overload operations of BRAS, the BRAS is defined as accessible BRAS.
For example, if the BRAS that can access deposits at least two, subscriber's main station selects arbitrary accessible BRAS as the BRAS for choosing,
Can also be according to the time sequencing for receiving PADO, using corresponding for the PADO for receiving earliest accessible BRAS as choosing
BRAS；If only depositing an accessible BRAS, subscriber's main station is using the accessible BRAS as the BRAS for choosing.
In an optional embodiment of the application, according to the load parameter, the BRAS for accessing is determined, specifically can be with
Including：Based on the load parameter of each BRAS, the load condition value of each BRAS is determined；The load condition value of each BRAS is compared
Compared with the BRAS for being defined as accessing the minimum BRAS of load condition value.Specifically, subscriber's main station can be continuous in Preset Time
The sent out PADO of multiple stage BRAS is received, i.e., multiple PADO are received in Preset Time；And can respectively to each
PADO is parsed, and extracts the load parameter entrained by which, such as number of users, weighted data or performance in PADO analytically
Data etc., to determine each BRAS currently corresponding load conditions using load parameter, such as determine the load of each BRAS
State value, and then the minimum BRAS of load condition value can be defined as the BRAS of access, to be carried out by the BRAS of the access
Certification, accesses the Internet, such that it is able to avoid flowing of access from being all partial to the situation that walks toward on high performance server, that is, solves
The uneven problem of each BRAS load balancings in prior art network.
In an optional embodiment of the application, load parameter can include：Number of users and/or weighted data
And/or performance data and/or the first parameter calculated according to above-mentioned two or two or more parameter.Wherein, the first load
Parameter can be calculated in calculated in subscriber's main station, or BRAS, and the application embodiment is to this
It is not specifically limited.For example, the first parameter can be the load condition value of BRAS.
Wherein in an embodiment, load parameter can include but are not limited to following at least one：Number of users,
Weighted data, performance data.Wherein, subscriber's main station can determine the load condition of each BRAS based on the load parameter of each BRAS
Value, including：When load parameter is number of users, performance data or weighted data, determine according to the value of the load parameter negative
Carry state value；When the load parameter is included at least two in number of users, performance data, weighted data, to the load
Parameter is calculated, and determines load condition value.
Wherein in an embodiment, when load parameter is number of users or performance data, can be by the load
Used as the load condition value, wherein, the performance data includes the Center Processing Unit Utilization or BRAS of BRAS to the value of parameter
Memory usage；Or, when the load parameter is weighted data, can be using the inverse of the weighted data as described
Load condition value, wherein, the weighted data is determined according to the current Center Processing Unit Utilizations of BRAS and/or memory usage
's.
Wherein in an embodiment, when load parameter includes number of users and weighted data, can be to the use
Amount amount and weighted data are calculated, and determine the load condition value of BRAS.
Wherein in an embodiment, when load parameter includes number of users and performance data, can adopt described
Performance data calculates the corresponding weights of BRAS, and the number of users and the weight are calculated, and determines the BRAS
Load condition value；Or, can obtain the corresponding pre-set user quantity of performance data, and to the pre-set user quantity and
Number of users is calculated, and determines the load condition value of BRAS.
Wherein in an embodiment, when load parameter includes number of users, weighted data and performance data, use
Householder's machine can draw corresponding load condition value, such as by calculating to number of users, weighted data and performance data
The value that weighted data is multiplied with number of users and/or performance data can be calculated, will be calculated according to default computing formula
Product as load condition value.
Wherein in an embodiment, the load parameter that PADO is carried can include：Number of users, the number of users measurer
Body can include the quantity that BRAS determines according to the subscriber's main station for currently connecting.Subscriber's main station can will be true for the value of the number of users
Be set to load condition value, the BRAS for choosing is determined based on the load condition value.
Wherein in an embodiment, the load parameter that PADO is carried can include：Performance data, the performance data can
The running status current for characterizing BRAS, can specifically include CUP occupancies, memory usage etc..Subscriber's main station can be with
The value of the performance data is defined as load condition value, to determine the BRAS for choosing based on the load condition value, such as can be by CUP
The minimum BRAS of occupancy or memory usage is defined as the BRAS for choosing.Certainly, subscriber's main station can also pass through CUP occupancies
And memory usage is calculated, and obtains corresponding load condition value, with chosen based on the determination of calculated load condition value
BRAS, the application are not restricted to this.
To sum up, carried out come the concrete calculating reality of the load factor state value for determining BRAS by calculating the load parameter of BRAS
Existing mode has multiple, and the application is not specifically limited to the concrete calculation of load parameter.
Used as a specific example of the application, the PC as subscriber's main station receives 3 when multiple PADO are received, such as
By parsing to each PADO, individual PADO, respectively PADO1, PADO2, PADO3, can determine that each BRAS is currently corresponding
Load parameter, the number of users BRAS-Count1 and weighted data BRAS-Count1 as entrained by by PADO1 are defined as BRAS1
Current corresponding load parameter, will be true for the number of users BRAS-Count2 and weighted data BRAS-Count2 entrained by PADO2
It is set to BRAS2 currently corresponding load parameters, and by the number of users BRAS-Count3 and weighted data entrained by PADO3
BRAS-Count3 is defined as BRAS3 currently corresponding load parameters；Such that it is able to by comparing to the load parameter of each BRAS
Compared with the BRAS for being defined as accessing the minimum BRAS of load percentage, such as by the load condition value (BRAS- to BRAS1
Count1/BRAS-Weight1), the load condition value (BRAS-Count2/BRAS-Weight2) of BRAS2 and the load of BRAS3
State value (BRAS-Count3/BRAS-Weight3) is compared, and determines the minima in this three, such that it is able to by minimum
The BRAS of load condition value is defined as the BRAS for choosing access.
Obviously, it is extended by the PADO sent by BRAS in the application embodiment, is increased in the PADO
The current corresponding load parameters of BRAS, so that subscriber's main station can determine each BRAS according to the PADO for carrying load parameter
Current loading condition, and the BRAS of suitable access is chosen based on the current loading conditions of each BRAS, such that it is able to avoid using
Family flow concentrates on high performance BRAS and causes the high-performance BRAS overload operation, solves each in network in prior art
The uneven problem of BRAS load balancings.
With reference to Fig. 3, show the application another kind of server load balancing method embodiment the step of flow chart.
The method connection specifically can apply to, in remote access servers BRAS, specifically may include steps of：
Step 302, when discovery start message PADI is received, generates and is actively discovered proposal message PADO, wherein, described
PADO carries BRAS currently corresponding load parameters.
In the application embodiment, BRAS can receive discovery start message of the subscriber's main station by broadcast transmission
During PADI, the BRAS currently corresponding load parameters can be obtained, such that it is able to according to the current load parameters of BRAS, generating should
PADI is corresponding to be actively discovered proposal message PADO.The PADO carries BRAS currently corresponding load parameters.For example, BRAS can be with
By the subscriber's main station of the current connection of detection, the number of users of current connection is determined, and then can generate the carrying number of users
Be actively discovered proposal message PADO, responded with the discovery start message PADI sent by subscriber's main station.
The PADO is sent to subscriber's main station by step 304, is connect according to PADO determinations with triggering the subscriber's main station
The BRAS for entering.
In the application embodiment, the PADO can be fed back to subscriber's main station, with to the use after PADO is generated by BRAS
The PADI sent by householder's machine is responded, so that the subscriber's main station can be determined according to the load parameter that PADO is carried being somebody's turn to do
The current loading conditions of BRAS, to determine the BRAS of suitable access, it is to avoid flowing of access be all partial to toward high performance server
On the situation walked, solve the problems, such as that each BRAS load balancings are uneven in network in prior art.
In an optional embodiment of the application, load parameter can include：Number of users and/or weighted data
And/or performance data and/or the first parameter calculated according to above-mentioned two or two or more parameter.Wherein, the first load
Parameter can be calculated in BRAS, such as can be with the calculated load percentage values of BRAS.For example, BRAS can be calculated
The ratio of number of users and weighted data, and using the ratio for obtaining as the BRAS load percentage value.
On above-mentioned embodiment basis, below based on interacting for subscriber's main station and the BRAS in network, and combine and have
Body example, is discussed in detail to the server load balancing of the application embodiment.
With reference to Fig. 4, show the application another server load balancing method embodiment the step of flow chart,
Specifically may include steps of：
Step 402, subscriber's main station send and find start message PADI.
In the application embodiment, subscriber's main station when PPPOE sessions are set up, can by way of broadcasting announcements
PADI is sent in network, is actively discovered proposal message PADO to trigger the BRAS for receiving the PADI messages in network feedbacks.Its
In, described being actively discovered proposes that message PADO is responded for the discovery start message PADI that BRAS is sent to subscriber's main station.
Step 404, BRAS generate PADO when PADI is received, and wherein, it is currently corresponding negative that the PADO carries BRAS
Carry parameter.
In the application embodiment, BRAS can be to having found that start message PADI is monitored, to monitor to find
During beginning message PADI, execute generation and be actively discovered the step of proposing message PADO, such as BRAS is receiving discovery start message
After PADI, discovery start message PADI can be responded, generate and be actively discovered proposal message PADO.
In an optional embodiment of the application, load parameter can include but is not limited to following at least one：With
Amount amount, weighted data, performance data.Wherein, according to the load parameter that the BRAS is current, the corresponding masters of the PADI are generated
Message PADO is proposed in dynamic discovery, can specifically include：Really the current load parameters of described BRAS；Using the load parameter,
Generate the PADO.
Wherein in an optional embodiment, in the current load parameters of really described BRAS, can specifically include：Obtain
Take the current Center Processing Unit Utilizations of the BRAS and/or memory usage, and by the Center Processing Unit Utilization for obtaining and/
Or memory usage is used as the performance data.
Wherein in an optional embodiment, in the current load parameters of really described BRAS, can specifically include：Obtain
The number of users is taken, the number of users is according to the subscriber's main station determination of the BRAS currently connections.
Wherein in an optional embodiment, according to the current Center Processing Unit Utilizations of the BRAS and/or internal memory
Occupancy is calculated, and determines the weighted data, or, obtain the weighted data being pre-configured with.
The application embodiment can pass through to extend PADO, to increase the current load parameters of BRAS in PADO, so as to
The load parameter that user's main clause is carried according to the PADO, determines the current loading conditions of the BRAS for sending the PADO.
For example, it is possible to pass through to extend the field inside PPPoE labels (Tags), quantity BRAS-Count that Adds User and weighted data
BRAS-Weight the two attribute fields, so that subscriber's main station can be according to the number of users BRAS- in the PADO messages
Count attributes and weighted data BRAS-Weight attributes, determine the current loading conditions of BRAS.Wherein, number of users BRAS-
The subscriber's main station that Count can be currently accessed by counting BRAS is determined；Weighted data BRAS-Weight attributes can be with
Configured according to the process performance or other factorses of BRAS, such as can be based on the central processing unit (Central of BRAS
Processing Unit, CPU) performance parameter configured, the application embodiment is not specifically limited to this.
In an optional embodiment of the application, BRAS is actively discovered according to the number of users for currently connecting, generation
Propose message PADO, can specifically include：The subscriber's main station for currently connecting is detected, the number of users is determined, is obtained
The weighted data being pre-configured with, such that it is able to adopt the weighted data and the number of users, generate described in be actively discovered and carry
View message PADO.
BRAS can be counted to the subscriber's main station for currently having connected, and determine the number of users BRAS- of current connection
Count.For example, if BRAS1 currently has 100 subscriber's main stations online, BRAS1 can determine number of users BRAS-Count1
Property value be 100；If BRAS2 currently has 100 subscriber's main stations online, BRAS2 can determine number of users BRAS-
The property value of Count2 is 200；If BRAS3 currently has 300 subscriber's main stations online, BRAS3 can determine number of users
The property value of BRAS-Count1 be 300 ... meanwhile, BRAS can obtain the weighted data BRAS-Weight being pre-configured with.Example
Such as, if the property value of weighted data BRAS-Weight can be set by the weighted data being pre-configured with BRAS1 for 1, BRAS1
It is set to 1.BRAS can by weighted data BRAS-Weight and number of users BRAS-Count are encapsulated in PPPoE messages,
Generate PADO.
PADO is sent to subscriber's main station by step 406, BRAS.
The BRAS for accessing, such as triggering subscriber's main station foundation is determined such that it is able to trigger the subscriber's main station according to the PADO
Number of users BRAS-Count entrained by the PADO and weighted data BRAS-Weight determines the BRAS for accessing.
Step 408, subscriber's main station receive PADO in Preset Time.
Step 410, subscriber's main station determine the load parameter of corresponding BRAS according to PADO.
In an optional embodiment of the application, subscriber's main station can be detected default after the PADI is sent
Whether the PADO is received in time；If so, the PADO then to receiving is parsed, and determines the load ginseng of corresponding BRAS
Number；If it is not, then resending PADI, i.e., PADO is not being received more than Preset Time, can resend PADI, can with lookup
With the BRAS for accessing.
Wherein in an optional embodiment, if detect not receiving PADO in Preset Time, subscriber's main station can be with
When the PADO is received, BRAS that the BRAS for sending the PADO is defined as accessing, i.e., after Preset Time is exceeded, can
So that the BRAS for sending the PADO, when first PADO is received, to be directly defined as the BRAS for accessing, user is thereby may be ensured that
Main frame accesses the efficiency of BRAS, and the application is not restricted to this.
In the application embodiment, when subscriber's main station receives multiple PADO messages, that is, it is sent out to receive multiple stage BRAS
The PADO messages for sending, respectively PADO1, PADO1, PADO3 ... are sent to which such that it is able to be directed to each BRAS
PADO messages are parsed, and determine the corresponding load parameters of the BRAS, such as determine each BRAS currently corresponding numbers of users
BRAS-Count and weighted data BRAS-Weight, to adopt number of users BRAS-Count and weighted data BRAS-Weight
Determine the load condition value of each BRAS.
As a specific example of the application, if subscriber's main station only receives 1 PADO in Preset Time, can be with
The BRAS for being defined as accessing the BRAS for sending the PADO, to verifying by the BRAS of the access, to access the Internet；Or
Person, if not receiving PADO messages in the Preset Time, can be authenticated according to the first PADO messages for receiving, i.e.,
When the Preset Time is exceeded, corresponding for the first PADO messages for receiving BRAS can be defined as the BRAS of specified certification, this
Application embodiment is not specifically limited to this.
In an optional embodiment of the application, the PADO that subscriber's main station is sent according to each BRAS determines each BRAS
Currently corresponding load parameter, can specifically include：The PADO that each BRAS sends is parsed, determines that each BRAS is currently corresponding
Number of users and weighted data, such that it is able to using corresponding for each BRAS number of users and weighted data as each BRAS load
Parameter.Specifically, subscriber's main station can be directed to each BRAS, and the PADO sent by which is parsed, and obtains each
Number of users BRAS-Count and weighted data BRAS-Weight entrained by PADO；And by the number of users BRAS- for obtaining
Count and weighted data BRAS-Weight are defined as the BRAS currently corresponding load parameters.
Step 412, subscriber's main station determine the BRAS for accessing according to the load parameter.
In the application embodiment, subscriber's main station can be born to each server according to predefined comparison rule
Parameter is carried, the current suitable BRAS for accessing is determined, to be authenticated to the BRAS for determining, is accessed the Internet.
Used as a specific example of the application, subscriber's main station can be received in Preset Time respectively by comparing two-by-two
The load parameter of the corresponding BRAS of PADO, determines the BRAS for accessing.For example, when two PADO are received, subscriber's main station can lead to
Whether the ratio for crossing judgement (BRAS-Count1/BRAS-Count2) with (BRAS-Weight1/BRAS-Weight2) is more than 1,
To choose the BRAS of access, such as BRAS2 can be selected when more than or equal to 1, when less than 1 can select BRAS1；Or
When being equal to 1, it is also possible to according to the BRAS that the time sequencing that this two PADO are received selects to access；And, if when default
In receive the 3rd PADO, then can be by the number of users entrained by primary comparative result and the 3rd PADO
BRAS-Count3 and weighted data BRAS-Weight3 are compared, and determine second comparative result；If connecing in Preset Time
Receive the 4th PADO, then can be by the number of users BRAS- entrained by secondary comparative result and the 4th PADO
Count4 and weighted data BRAS-Weight4 are compared ... and so on, are received in Preset Time until having compared
The all PADO for arriving, and using selected for final comparative result BRAS as access BRAS.
Certainly, the subscriber's main station of the application embodiment can with according to other comparison rules determine present load ratio compared with
Little BRAS, such as can using ratio between the number of users BRAS-Count of BRAS and weighted data BRAS-Weight as
The minimum BRAS of load condition value, by the load condition value of each BRAS of comparison, is defined as accessing by the load condition value of BRAS
BRAS, the application embodiment is not specifically limited to the comparison rule that subscriber's main station is pre-configured with.
In an optional embodiment of the application, according to the load parameter, determine the BRAS for accessing, can wrap
Include：The BRAS that the minimum BRAS of load parameter is defined as accessing.
Wherein in an embodiment, according to the load parameter, determine the BRAS for accessing, can specifically include：Base
In the load parameter of each BRAS, the load condition value of each BRAS is determined, may then pass through the load condition value to each BRAS and enter
Row compares, the BRAS for being defined as accessing the minimum BRAS of load condition value.
For example, in conjunction with above-mentioned example, subscriber's main station can be calculated to the number of users of each BRAS and weighted data, really
The load condition value of fixed each BRAS；Then the load condition value of each BRAS is compared, by the BRAS that load condition value is minimum
It is defined as the BRAS for accessing.
As another specific example of the application, when subscriber's main station receives multiple in Preset Time, can respectively
The ratio (BRAS-Count/BRAS-Weight) of the number of users BRAS-Count in PADO and weighted data BRAS-Weight
It is defined as the load condition value of each BRAS, such that it is able to be compared by the load condition value to each BRAS, by load condition
The minimum BRAS of value is defined as the BRAS for accessing, that is, can be by comparing by comparing (BRAS-Count1/BRAS-
Weight1), (BRAS-Count2/BRAS-Weight2), (BRAS-Count3/BRAS-Weight3) ..., by load condition
The minimum BRAS of value (BRAS-Count/BRAS-Weight) is used as the BRAS for accessing.To receive three in Preset Time
As a example by PADO, if BRAS1 currently has 100 subscriber's main stations online, weighted data BRAS-Weight1 is set as 1；BRAS2 currently has
200 subscriber's main stations are online, and weighted data BRAS-Weight2 is set as 1, BRAS3 currently has 300 subscriber's main stations online, weight
Data BRAS-Weight3 are set as 1, then according to pre-defined rule, subscriber's main station can show that the load condition value of BRAS1 is
100th, the load condition value of BRAS2 be 200, BRAS3 load condition value be 300, and then can select load percentage BRAS1 make
For certification BRAS equipment.
When determining the load shape of each BRAS using number of users BRAS-Count and weighted data BRAS-Weight
State value, such as using the ratio of number of users BRAS-Count and weighted data BRAS-Weigh as BRAS load condition value, from
And the server that the minimum BRAS of load condition value is defined as accessing.For example, BRAS1 currently has 100 subscriber's main stations online,
Weighted data is set as 1；BRAS2 currently has 300 subscriber's main stations online, and weighted data is set as 1, obtains a result according to rule is defined
For 1/3, then BRAS1 is selected as certification BRAS equipment.
To sum up, according to the PADO for carrying load parameter, the subscriber's main station in the application embodiment can determine that BRAS works as
Front loading condition；And the BRAS accessed selected by which can be determined according to the load parameter of each BRAS, also i.e., it is possible to foundation
The current loading conditions of each BRAS determine the BRAS for accessing, to be communicated by the BRAS, such that it is able to avoid using householder
Machine is responded according to which platform BRAS at first and just specify the BRAS certifications and to cause the flowing of access in network to concentrate on high performance
Server, and then achieve the load balancing of BRAS in network.
By the application embodiment, the load percentage of the BRAS in network can be entered by the weighted data for pre-setting
Row sets, you can with the BRAS accessed according to different load percentage adjustment subscriber's main stations, solves and is partial to due to customer flow
High-performance toward server on walk and cause to there is a problem of that each server loading sharing of performance difference is uneven；And can fit
For the BRAS provided by different vendor, solve when the technical scheme of stacking or two-shipper is carried out, multiple stage BRAS equipment is all
Need to belong to the restricted problem existing for same manufacturer.
Specifically, the technical scheme of stacking or two-shipper refers to that any one BRAS delays machine in a network, another BRAS
Can take over immediately, so as to realize the load balancing of physics BRAS and backup in network.Householder is used in the application embodiment
Machine can determine the BRAS for accessing by the load percentage of BRAS, delay after machine such that it is able to a BRAS in a network, using negative
The less BRAS of load ratio is recovered so that subscriber's main station quickly can recover to be connected with the Internet, i.e., the mechanism recovers effect
Really more apparent.
It should be noted that for method embodiment, in order to be briefly described, therefore which to be all expressed as a series of action
Combination, but those skilled in the art should know, and the application embodiment is not limited by described sequence of movement, because
It is that some steps can be carried out using other orders or simultaneously according to the application embodiment.Secondly, those skilled in the art
Should also know, embodiment described in this description belongs to preferred implementation, and involved action is not necessarily
Necessary to the application embodiment.
With reference to Fig. 5, a kind of structured flowchart of server of the application device embodiments in a balanced way is shown.The application reality
Device specifically can apply to connect the Internet by remote access servers BRAS the server provided by the mode of applying in a balanced way
Subscriber's main station in, specifically include such as lower module：
Message sending module 502, finds start message PADI for sending, and receives the PADI messages to trigger
BRAS feedbacks are actively discovered proposal message PADO, and wherein, the PADO carries BRAS currently corresponding load parameters；
Receiver module 504, for receiving the PADO；
Load parameter determining module 506, for meeting 504 PADO for receiving according to the receiver module, determines corresponding BRAS
Load parameter.
Server determining module 508, for according to the load parameter, determining the BRAS for accessing.
In an optional embodiment of the application, load parameter can include：Number of users and/or weighted data
And/or performance data and/or the first parameter calculated according to above-mentioned two or two or more parameter.Wherein, the first load
Parameter can be calculated in calculated in subscriber's main station, or BRAS, and the application embodiment is to this
It is not specifically limited.For example, the first parameter can be the load condition value of BRAS.
Wherein in an embodiment, the server determining module 508, specifically for will be minimum for load parameter
BRAS is defined as the BRAS for accessing.For example, server determining module 508 is determined specifically for the load parameter based on each BRAS
The load condition value of each BRAS, and, the load condition value of each BRAS is compared, will be true for the minimum BRAS of load condition value
It is set to the BRAS of access.
In an optional embodiment of the application, load parameter can specifically include but are not limited to following at least one
Kind：Number of users, weighted data, performance data.Wherein, the server determining module 508, specifically can be used for when load ginseng
When number is number of users, performance data or weighted data, load condition value is determined according to the value of the load parameter；And, when
When the load parameter is included at least two in number of users, performance data, weighted data, the load parameter is counted
Calculate, determine load condition value.
For example, load parameter determining module 506 can be parsed to the PADO that each BRAS sends, and determines that each BRAS is current
Corresponding number of users and weighted data, and can be using corresponding for each BRAS number of users and weighted data as each BRAS's
Load parameter, and the number of users and weighted data of 508 couples of each BRAS of server determining module can be triggered calculate, really
The load percentage value of fixed each BRAS, and, the load percentage value of each BRAS is compared, by the BRAS that load percentage value is minimum
It is defined as the BRAS for accessing.
In an optional embodiment of the application, the receiver module 504 specifically can be used for sending out in the message
After sending module to send the PADI, whether detection receives the PADO in Preset Time；If so, the load ginseng is then triggered
Number 506 couples of PADO for receiving of determining module are parsed, and determine the load parameter of corresponding BRAS；If the receiver module 504
The PADO is not received in Preset Time, then trigger the message sending module 502 and resend PADI, or, super
When crossing the Preset Time and receiving the PADO, trigger the server determining module 508 and will send the BRAS of the PADO
It is defined as the BRAS for accessing.
Reference picture 6A, shows the structured flowchart of another kind of server of the application device embodiments in a balanced way.This Shen
Please the server that provided of embodiment device is specifically can apply in remote access servers BRAS in a balanced way, specifically can be with
Including such as lower module：
Message generation module 602, for when discovery start message PADI is received, generating and being actively discovered proposal message
PADO, wherein, the PADO carries BRAS currently corresponding load parameters.
Message sending module 604, for the PADO is sent to subscriber's main station, to trigger the subscriber's main station according to institute
State PADO and determine the BRAS for accessing.
Reference picture 6B, shows the structured flowchart of another kind of server of the application device embodiments in a balanced way.
In an optional embodiment of the application, load parameter can include：Number of users and/or weighted data
And/or performance data and/or the first parameter calculated according to above-mentioned two or two or more parameter.
Wherein in an embodiment, load parameter includes following at least one：Number of users, weighted data, performance
Data.Wherein, the message generation module 602, specifically for the current load parameters of really described BRAS, and, using institute
Load parameter is stated, the PADO is generated.
In an optional embodiment of the application, message generation module 602, for obtain the BRAS current in
Central processor occupancy and/or memory usage, and using the Center Processing Unit Utilization for obtaining and/or memory usage as institute
State performance data；Or, for obtaining the number of users, the number of users is according to the current subscriber's main stations for connecting of the BRAS
Determine；Or, for being calculated according to the current Center Processing Unit Utilizations of the BRAS and/or memory usage, determining
The weighted data, or, obtain the weighted data being pre-configured with.
For example, message generation module 602, can detect to the subscriber's main station for currently connecting, determine the number of users
Amount, while the weighted data being pre-configured with can be obtained, such that it is able to adopt the weighted data and the number of users, generates
PADO.
In an optional embodiment of the application, the device of the server load balancing can also include following mould
Block：
Message monitoring modular 606, for being monitored to discovery start message PADI, and when PADI is monitored, touches
Send out message generation module 602 described and execute the step of generating PADO.
For device embodiments, due to itself and method embodiment basic simlarity, so description is fairly simple,
Related part is illustrated referring to the part of method embodiment.
Each embodiment in this specification is described by the way of going forward one by one, and each embodiment is stressed
The difference with other embodiment, between each embodiment identical similar part mutually referring to.
Those skilled in the art it should be appreciated that the embodiment of the application embodiment can be provided as method, device or
Computer program.Therefore, the application embodiment can adopt complete hardware embodiment, complete software embodiment or
The form of the embodiment in terms of in conjunction with software and hardware.And, the application embodiment can adopt one or more wherein
Include computer-usable storage medium (including but not limited to disk memory, CD-ROM, the light of computer usable program code
Learn memorizer etc.) form of the upper computer program that implements.
The application embodiment is with reference to the method according to the application embodiment, terminal unit (system) and computer
The flow chart and/or block diagram of program product is describing.It should be understood that can be by computer program instructions flowchart and/or side
The combination of each flow process and/or square frame and flow chart and/or the flow process in block diagram and/or square frame in block diagram.Can provide
These computer program instructions are whole to the process of general purpose computer, special-purpose computer, Embedded Processor or other programmable datas
The processor of end equipment is producing a machine so that by the process of computer or other programmable data processing terminal equipments
The instruction that device is executed is produced for realization in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple sides
The device of the function of specifying in frame.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing terminal equipments
In the computer-readable memory for working in a specific way so that the instruction being stored in the computer-readable memory produces bag
The manufacture of command device is included, the command device is realized in one side of one flow process of flow chart or multiple flow processs and/or block diagram
The function of specifying in frame or multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing terminal equipments so that
On computer or other programmable terminal equipments execute series of operation steps to produce computer implemented process, so as to
The instruction executed on computer or other programmable terminal equipments is provided for realization in one flow process of flow chart or multiple flow processs
And/or specify in one square frame of block diagram or multiple square frames function the step of.
Although having been described for that the preferred implementation of the application embodiment, those skilled in the art are once learnt
Basic creative concept, then can make other change and modification to these embodiments.So, claims are intended to
It is construed to include preferred implementation and falls into the had altered of the application embodiment scope and change.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation are made a distinction with another entity or operation, and are not necessarily required or implied these entities or operation
Between exist any this actual relation or order.And, term " including ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that a series of process, method, article or terminal unit including key elements is not only wrapped
Those key elements, but also other key elements including being not expressly set out are included, or is also included for this process, method, article
Or the key element that terminal unit is intrinsic.In the absence of more restrictions, by wanting that sentence "including a ..." is limited
Element, it is not excluded that also there is other identical element in process, method, article or the terminal unit for including the key element.
Method and apparatus to a kind of server load balancing provided herein, is described in detail above, this
Apply specific case to be set forth the principle of the application and embodiment in text, the explanation of embodiment of above is simply used
The present processes and its core concept is understood in help；Simultaneously for one of ordinary skill in the art, according to the application's
Thought, will change in specific embodiments and applications, and in sum, this specification content should not be construed as
Restriction to the application.
Claims (10)
1. a kind of method of server load balancing, it is characterised in that methods described is applied to by remote access servers
In the subscriber's main station of BRAS connections the Internet, methods described includes：
Send and find start message PADI, proposal message is actively discovered to trigger the BRAS for receiving PADI messages feedbacks
PADO, wherein, the PADO carries BRAS currently corresponding load parameters；
Receive the PADO；
According to the PADO, the load parameter of corresponding BRAS is determined；
According to the load parameter, the BRAS for accessing is determined.
2. method according to claim 1, it is characterised in that the load parameter, including：Number of users and/or weight
Data and/or performance data and/or the first parameter calculated according to above-mentioned two or two or more parameter.
3. method according to claim 1, it is characterised in that described determine the BRAS for accessing according to the load parameter,
Including：The BRAS that the minimum BRAS of load parameter is defined as accessing.
4. method according to claim 1, it is characterised in that according to the PADO, determine the load parameter of corresponding BRAS,
Including：
After the PADI is sent, whether detection receives the PADO in Preset Time；
If so, the PADO then to receiving is parsed, and determines the load parameter of corresponding BRAS；
If the PADO is not received in Preset Time, resend PADI, or, receiving more than the Preset Time
During to the PADO, BRAS that the BRAS for sending the PADO is defined as accessing.
5. a kind of method of server load balancing, it is characterised in that methods described is applied in remote access servers BRAS,
Methods described includes：
When discovery start message PADI is received, generate and be actively discovered proposal message PADO, wherein, the PADO carries BRAS
Current corresponding load parameter；
The PADO is sent to subscriber's main station, the BRAS for accessing is determined to trigger the subscriber's main station according to the PADO.
6. method according to claim 5, it is characterised in that
The load parameter, including：Number of users and/or weighted data and/or performance data and/or according to above-mentioned two or two
The first parameter that individual above parameter is calculated.
7. a kind of device of server load balancing, it is characterised in that described device is applied to by remote access servers
In the subscriber's main station of BRAS connections the Internet, described device includes：
Message sending module, finds start message PADI for sending, to trigger the BRAS for receiving PADI messages feedbacks
Proposal message PADO is actively discovered, wherein, the PADO carries BRAS currently corresponding load parameters；
Receiver module, for receiving the PADO；
Load parameter determining module, for the PADO received according to the receiver module, determines the load of corresponding BRAS
Parameter；
Server determining module, for according to the load parameter, determining the BRAS for accessing.
8. device according to claim 7, it is characterised in that the server determining module, specifically for will load ginseng
The minimum BRAS of number is defined as the BRAS for accessing.
9. device according to claim 7, it is characterised in that the receiver module is specifically for sending mould in the message
After block sends the PADI, whether detection receives the PADO in Preset Time；If so, it is true that the load parameter is then triggered
Cover half block is parsed to the PADO for receiving, and determines the load parameter of corresponding BRAS；If the receiver module is in Preset Time
The PADO is not inside received, is then triggered the message sending module and is resend PADI, or, exceeding the Preset Time
When receiving the PADO, the BRAS that the BRAS for sending the PADO is defined as accessing by the server determining module is triggered.
10. a kind of device of server load balancing, it is characterised in that described device is applied to remote access servers BRAS
In, described device includes：
Message generation module, for when discovery start message PADI is received, generating and being actively discovered proposal message PADO, its
In, the PADO carries BRAS currently corresponding load parameters；
Message sending module, for the PADO is sent to subscriber's main station, to trigger the subscriber's main station according to the PADO
Determine the BRAS for accessing.
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