CN105323188A - Network traffic control method and device, and switch - Google Patents
Network traffic control method and device, and switch Download PDFInfo
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- CN105323188A CN105323188A CN201510728505.4A CN201510728505A CN105323188A CN 105323188 A CN105323188 A CN 105323188A CN 201510728505 A CN201510728505 A CN 201510728505A CN 105323188 A CN105323188 A CN 105323188A
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Abstract
The invention provides a traffic control method and device, and a switch. The traffic control method for the core switch comprises steps of receiving a second request message sent by an access switch, wherein the second request message is a message that is used for requesting an IP address and is sent to the access switch from user equipment (UE), and the message carries first information acquired by the access switch according to port information of the received message that is used for requesting the IP address and is sent from the UE; and controlling the traffic of to-be-received data at the UE side according to the first information and the currently used information of the port. Through adoption of the traffic control method and device and the switch, the problem of network data packet loss can be solved, and the traffic control method and device and switch can be applied to networks having high real-time performance requirement.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of method for controlling network flow, device and switch.
Background technology
In the network application of reality, usually all exist for the high application of requirement of real-time, such as online game, Online Video, voice call, network telephone conference etc.Because this kind of application is higher for requirement of real-time, if therefore there is packet loss in data message in network transmission process, cause network message to retransmit, this kind of application will be made normally to use, such as occur the problems such as video card pauses, voice call card pauses, online game card pauses or go offline.The tolerance of this kind of application to Network Packet Loss is poor, high to the requirement of real-time of network message.
Occur in network that the situation of packet loss is generally: outer net bursts of traffic is to the terminal use in Intranet, or the server burst flow of Intranet is to the terminal use of Intranet.Because the buffer memory of existing access switch is usually all very little; therefore when occurring in network that high-speed port mails to the situation of low-speed port; packet loss phenomenon can be produced because the buffer memory of access switch is not enough, thus cause the application of a large amount of high real-times in network to occur exception or cause high real-time application experience poor.
Summary of the invention
For defect of the prior art, the invention provides a kind of method for controlling network flow, device and switch, can solve in prior art and produce packet loss problem because access switch buffer memory is not enough.
For solving the problems of the technologies described above, the invention provides following technical scheme:
First aspect, the invention provides a kind of access switch flow control methods, comprising:
Receive the first request message for IP address requesting that user terminal UE sends;
According to the port information receiving described first request message, obtain for making core switch be the first information that this UE carries out traffic policy control;
The described first information is added in described first request message, obtains the second request message;
Second request message is sent core switch, according to the current use information of the described first information and described port, flow control is carried out to described UE to make described core switch.
Further, the second request message is sent core switch, to make described core switch carry out flow control according to the current use information of the described first information and described port to described UE, comprising:
Second request message is sent core switch, carries out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE to make described core switch;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information;
Wherein, the described first information comprises:
The IP address of UE request, receive the access switch of described first request message mark ID, receive the port numbers of the port of described first request message and receive the maximum network speed of port of described first request message.
Further, second request message is sent core switch, to make described core switch carry out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE, comprising:
Second request message is sent core switch, carries out flow control according to the uninterrupted of the maximum network speed of the port of the access switch at described UE place, described UE data to be received and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE to make described core switch:
If other UE are exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, then the data that described core switch is to be received to described UE carry out buffer memory;
If other UE pass through the maximum network speed of flow sum lower than this port of the data of this port accepts, then described core switch is according to the comparative result of the uninterrupted of the idle network bandwidth of this port and described UE data to be received, and the data to be received to described UE carry out flow control:
If the flow of the data that described UE is to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE forward by described core switch; Otherwise the part of the idle network bandwidth not exceeding this port in data to be received for described UE is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
Second aspect, present invention also offers a kind of core switch flow control methods, comprising:
Receive the second request message that access switch sends, described second request message is the message for IP address requesting that UE sends to described access switch, carries the first information that described access switch obtains according to the port information receiving the message for IP address requesting that described UE sends in this message;
The data to be received to described UE side according to the current use information of the described first information and described port carry out flow control.
Further, the data to be received to described UE side according to the current use information of the described first information and described port carry out flow control, comprising:
Flow control is carried out by the data that the flow sum of the data of this port accepts is to be received to described UE side according to the maximum network speed of the port of the access switch at described UE place and other UE;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information;
Wherein, the described first information comprises:
The IP address of UE request, the mark ID of described access switch, receive the port numbers of the port of the message for IP address requesting that described UE sends and receive the maximum network speed of port of the message for IP address requesting that described UE sends.
Further, carry out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side, comprising:
If other UE are exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, then the data that described core switch is to be received to described UE side carry out buffer memory.
Further, carry out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side, also comprise:
If other UE pass through the maximum network speed of flow sum lower than this port of the data of this port accepts, then described core switch is according to the comparative result of the uninterrupted of the idle network bandwidth of this port and described UE side data to be received, and the data to be received to described UE side carry out flow control:
If the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE side forward by described core switch; Otherwise the part not exceeding the idle network bandwidth of this port in data to be received for described UE side is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
Further, before the maximum network speed of the port of the access switch according to described UE place and other UE carry out flow control by the data that the flow sum of the data of this port accepts is to be received to described UE side, described method also comprises:
Obtain the flow sum of other UE by the data of this port accepts.
The third aspect, present invention also offers a kind of access switch volume control device, comprising:
Receiving element, for receiving the first request message for IP address requesting that user terminal UE sends;
Acquiring unit, for receiving port information during described first request message according to described receiving element, obtains for making core switch be the first information that this UE carries out traffic policy control;
Processing unit, the first information for being obtained by described acquiring unit is added in the first request message of described receiving element reception, obtains the second request message;
Transmitting element, sends core switch for the second request message obtained by described processing unit, carries out flow control to make described core switch according to the current use information of the described first information and described port to described UE.
Further, described transmitting element specifically for: by second request message send core switch, carry out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE to make described core switch;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information;
Wherein, the described first information comprises:
The IP address of UE request, receive the access switch of described first request message mark ID, receive the port numbers of the port of described first request message and receive the maximum network speed of port of described first request message.
Further, described transmitting element specifically for: the second request message is sent core switch, carries out flow control according to the uninterrupted of the maximum network speed of the port of the access switch at described UE place, described UE data to be received and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE to make described core switch:
If other UE are exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, then the data that described core switch is to be received to described UE carry out buffer memory;
If other UE pass through the maximum network speed of flow sum lower than this port of the data of this port accepts, then described core switch is according to the comparative result of the uninterrupted of the idle network bandwidth of this port and described UE data to be received, and the data to be received to described UE carry out flow control:
If the flow of the data that described UE is to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE forward by described core switch; Otherwise the part of the idle network bandwidth not exceeding this port in data to be received for described UE is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
Fourth aspect, present invention also offers a kind of access switch, comprises access switch volume control device recited above.
5th aspect, present invention also offers a kind of core switch volume control device, comprising:
Receiving element, for receiving the second request message that access switch sends, described second request message is the message for IP address requesting that UE sends to described access switch, carries the first information that described access switch obtains according to the port information receiving the message for IP address requesting that described UE sends in this message;
Flow controlling unit, carries out flow control for the data to be received to described UE side according to the current use information of the described first information and described port.
Further, described flow controlling unit, specifically for:
Flow control is carried out by the data that the flow sum of the data of this port accepts is to be received to described UE side according to the maximum network speed of the port of the access switch at described UE place and other UE;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information;
Wherein, the described first information comprises:
The IP address of UE request, the mark ID of described access switch, receive the port numbers of the port of the message for IP address requesting that described UE sends and receive the maximum network speed of port of the message for IP address requesting that described UE sends.
Further, described flow controlling unit comprises: the first judge module and control module;
Described first judge module, for judging whether other UE are exceeded by the flow sum of the data of the port accepts of the access switch at described UE place or to equal the maximum network speed of this port;
Data to be received for described UE side, during for determining that at described first judge module other UE to be exceeded by the flow sum of the data of this port accepts or to equal the maximum network speed of this port, are carried out buffer memory by described control module.
Further, described flow controlling unit also comprises: the second judge module;
Described second judge module, during for determining the maximum network speed of the flow sum of other UE by the data of this port accepts lower than this port at described first judge module, judge whether the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port;
Data to be received for described UE side, time also for determining that the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port at described second judge module, are forwarded by described control module;
Described control module, time also for determining that the flow of the data that described UE side is to be received is greater than the idle network bandwidth of this port at described second judge module, the part not exceeding the idle network bandwidth of this port in data to be received for described UE side is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
Further, described flow controlling unit also comprises: acquisition module;
Described acquisition module, for obtaining the flow sum of other UE by the data of the port accepts of the access switch at described UE place.
6th aspect, present invention also offers a kind of core switch, comprises core switch volume control device recited above.
As shown from the above technical solution; method for controlling network flow of the present invention, device and switch; by access switch be from UE request message add for making core switch be the first information that this UE carries out traffic policy control; make core switch can carry out flow control according to the current use information of the described first information and the port receiving request message to described UE, occur abnormal to avoid some application higher to requirement of real-time occurring causing because of Network Packet Loss or experience poor problem.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that high-speed port is to low-speed port burst flow schematic diagram;
Fig. 2 is Intranet operative scenario schematic diagram;
Fig. 3 is the flow chart of the access switch flow control methods that first embodiment of the invention provides;
Fig. 4 is the flow chart of the core switch flow control methods that fifth embodiment of the invention provides;
Fig. 5 is the structural representation of the access switch volume control device that tenth embodiment of the invention provides;
Fig. 6 is the structural representation of the core switch volume control device that fourteenth embodiment of the invention provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the network application of reality, usually all exist for the high application of requirement of real-time, such as online game, Online Video, voice call, network telephone conference etc., this kind of application is higher for requirement of real-time.In network transmission process, there is packet loss in data message, causes network message to retransmit, and this kind of application will be made normally to use, and such as occurs the problems such as video card pauses, voice call card pauses, online game card pauses or go offline.The tolerance of this kind of application to Network Packet Loss is poor, high to the requirement of real-time of network message.
In the normal use procedure of Intranet, when supposing that the network equipment all normally works, if there is the situation of high-speed port toward low-speed port burst flow in network, then can cause a large amount of network data packet losses.
As shown in Figure 1, the left side is the two-forty network port, and the right is the network port of low rate.Usual existing access network switch is exactly the first line of a couplet maximum rate 10000M network port, the second line of a couplet multiple maximum rate 1000M network port or the first line of a couplet maximum rate 1000M network port, the second line of a couplet maximum rate 100M network port.
For the gigabit access switch that market is the most general, i.e. the first line of a couplet 1000M network port, the switch of the second line of a couplet 100M network port.Suppose that in upper figure, left side two-forty port is 1000M speed port, the right is 100M speed port.Existing when there being burst flow in network is suppose that Fig. 1 left side 1000M speed port received the message of full rate in 0.1 second, in 0.1 second, namely receive the data of 100Mbit, is transmitted to the 100M speed port on the right.100M speed port sent with maximum rate in this 0.1 second, also can only transfer the data of 10Mbit.That is, in this time of 0.1 second, switch receives the data of 100Mbit, but can only transfer the data of 10Mbit, and the necessary buffer memory of data of remaining 90Mbit in a switch.Access switch in reality is all by hardware asics exchange chip forwarding data, and the buffer memory of ASIC is usually all very little, and the buffer memory of usual access switch is all less than 10Mbit.Therefore, in the above cases, in the data of 90Mbit, major part can be dropped because switch buffer memory is not enough.
Usually; see Fig. 2; usually the situation occurring packet loss in network mainly outer net bursts of traffic to the terminal use in Intranet; or the server area burst flow of Intranet mails to the terminal use of Intranet; occur that above-mentioned high-speed port (core switch) mails to the situation of low-speed port (access switch) in a network; usually can because access switch buffer memory is not enough packet loss, thus cause the application of a large amount of high real-times in network to occur exception or cause high real-time to be applied experiencing poor.
Flow control methods provided by the invention, device and switch; above-mentionedly produce packet loss phenomenon because access switch buffer memory is not enough for solving, and then cause the application of a large amount of high real-times in network to occur exception or cause high real-time to apply the problem experiencing difference.
Below the abbreviation noun occurred in embodiments of the invention and accompanying drawing is explained one by one.Wherein, UE is user terminal, and full name is UserEquipment, and general user's terminal can be computer, notebook, mobile phone etc.IP is Internet protocol address, and full name is InternetProtocolAddress.DHCP is DHCP, and full name is DynamicHostConfigurationProtocol.DHCP is the procotol of a local area network (LAN), uses the work of User Datagram Protoco (UDP) udp protocol, for giving internal network or Internet service provider's automatic IP address allocation.
Fig. 3 shows the flow chart of the access switch flow control methods that first embodiment of the invention provides, and see Fig. 3, the method comprises the steps:
Step 101: receive the first request message for IP address requesting that user terminal UE sends.
Step 102: according to the port information receiving described first request message, obtain for making core switch be the first information that this UE carries out traffic policy control.
Step 103: the described first information is added in described first request message, obtains the second request message.
Step 104: the second request message is sent core switch, according to the current use information of the described first information and described port, flow control is carried out to described UE to make described core switch.
Access switch flow control methods described in the present embodiment; by adding for making core switch be the first information that this UE carries out traffic policy control for the first request message from UE; make core switch can carry out flow control according to the current use information of the described first information and the port receiving the first request message to described UE, occur abnormal to avoid some application higher to requirement of real-time occurring causing because of Network Packet Loss or experience poor problem.
Second embodiment of the invention, on the basis of above-mentioned first embodiment, gives a kind of specific implementation of above-mentioned steps 104, is now described below.
Step 104: the second request message is sent core switch, according to the current use information of the described first information and described port, flow control is carried out to described UE to make described core switch.
In this step, the second request message is sent core switch, with the maximum network speed making described core switch determine the port of the access switch at described UE place according to the described first information.Wherein the first information comprises: the IP address of UE request, receive the access switch of described first request message mark ID, receive the port numbers of the port of described first request message and receive the maximum network speed of port of described first request message.After core switch knows the maximum network speed of the port of the access switch at described UE place, core switch carries out flow control according to the maximum network speed of this port and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side.
In the present embodiment, described core switch has carried out controlling based on the traffic shaping of port.All users under each for access switch port are considered as user's group by core switch, and core switch carries out traffic shaping control based on the maximum network speed of this port to described user's group.
Such as; when carrying out flow control to the UE under certain port; core switch carries out flow control according to the maximum network speed of this port and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side, occurs abnormal to avoid the application higher to requirement of real-time occurring causing because of Network Packet Loss or experiences poor problem.
Third embodiment of the invention, give in above-mentioned second embodiment and the second request message is sent core switch, to make described core switch carry out the concrete mode of flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side, be now described below.
In the present embodiment, the mode that core switch carries out flow control according to the uninterrupted of the maximum network speed of the port of the access switch at described UE place, described UE data to be received and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE is:
C1: if other UE are exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, then the data that described core switch is to be received to described UE carry out buffer memory;
C2: if other UE pass through the maximum network speed of flow sum lower than this port of the data of this port accepts, then described core switch is according to the comparative result of the uninterrupted of the idle network bandwidth of this port and described UE data to be received, and the data to be received to described UE carry out flow control:
C21: if the flow of described UE data to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE forward by described core switch;
C22: if the flow of described UE data to be received is greater than the idle network bandwidth of this port, then the part of the idle network bandwidth not exceeding this port in data to be received for described UE is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
In above-mentioned steps and subsequent embodiment, involved flow all refers in the unit interval flow receiving or forward; The maximum network speed of involved port refers to the maximum stream flow that unit interval inner port can forward; The idle network bandwidth of involved port refers to the flow that unit interval inner port can also forward.
In four embodiment of the invention, give the step C0 carried out before above-mentioned steps C1-C2.
Step C0: obtain the flow sum of other UE by the data of this port accepts.
In this step, core switch obtains other UE by the flow sum of the data of this port accepts according to traffic policy table.
Particularly, traffic policy table is as shown in table 1 below.Wherein this traffic policy table is that the DHCP request message with the specific DHCPoption82 information of expansion that core switch sends according to access switch generates.
See Fig. 2, when the user terminal on second line of a couplet port starts to surf the Net, first can send DHCP request message to apply for IP address to access switch.
Wherein, the process of the DHCP request acquisition IP address of standard comprises following 4 steps.
A. main frame sends DHCPDISCOVER broadcast packet and find Dynamic Host Configuration Protocol server on network;
B.DHCP server sends DHCPOFFER response data packet to main frame, comprises the IP address of distribution, MAC Address, domain-name information and address lease;
C. main frame sends DHCPREQUEST broadcast packet, formally distributes the IP address provided to server request;
D.DHCP server sends DHCPACK response data packet to main frame, confirms the request of main frame.
In above-mentioned steps b, be assigned with IP address in the OFFER message that Dynamic Host Configuration Protocol server is replied, following UE can send this IP address of DHCPREQUEST message request.Wherein, the DHCP request message in the present embodiment refers to DHCPREQUEST request message.
Usual DHCP request message via the forwarding of each layer switch, finally can issue Dynamic Host Configuration Protocol server, is carried out the distribution of IP address by Dynamic Host Configuration Protocol server reply message to user terminal.
When access switch receives the DHCP request message of user terminal, access switch can add the first information to this DHCP request message.In the present embodiment, access switch adds expansion DHCPoption82 information to this DHCP request message.
Give an explaination for below DHCPoption82 information:
DHCPoption82: according to the definition of RFC3046 standard, when switching equipment carries out DHCP forwarding, detailed some network informations indicating dhcp client can be carried out by the mode of adding option, thus make server can distribute specific IP according to more accurate information to user, according to the definition of RFC3046, use the option number of option option to be 82, therefore be also referred to as option82.
As seen from the above description, in standard, DHCPoption82 information is used for distributing specific IP according to more accurate information to user to Dynamic Host Configuration Protocol server.But in the present embodiment, access switch utilizes DHCPoption82 technology, the information of expansion DHCPoption82, increases by 4 special information in the field list of expansion: the maximum network speed of the IP address of user terminal, access switch mark ID, user place access switch port number, user place access switch port.Such as, increase following extend information, 192.168.1.1 (the IP address of user terminal), 1 (access switch mark ID, refer to No. 1 switch), 1 (user place access switch port number, refer to No. 1 network port), 100M (the maximum network speed of user place access switch port refers to the maximum network speed of No. 1 network port).
Core switch is when receiving the above-mentioned DHCP request message with expansion DHCPoption82 information, core switch is by identifying expansion DHCPoption82 information, just can identify each user on which network port of which access switch of whole net, and the maximum rate of this port support is how many.According to these information, core switch generates following traffic policy table.
Table 1 traffic policy table
According to above-mentioned Policy Table, core switch, before the data to be received to described UE side carry out flow control, first needs to obtain other UE by the flow sum of the data of this port accepts.Such as, suppose that the IP address of this UE is 192.168.1.1, the port at this UE place is No. 1 network port of No. 1 switch in upper table.Now need to inquire about above-mentioned traffic policy table, determine that No. 1 network port of No. 1 switch also has several UE now in use except this UE, its bandwidth taken is how many altogether.
Below by an instantiation, above-mentioned flow control policy is explained.Wherein, core switch controls each flow descending in network.Concrete control strategy is, according to the object IP of the data flow received, as 192.168.1.1, inquire about above-mentioned traffic policy table, the switch that the object terminal of this data flow is corresponding is No. 1 switch, and corresponding port numbers is No. 1 network port, and the maximum rate of No. 1 network port is 100M.
Core switch, when carrying out flow control to this data flow, needs to inquire about above-mentioned traffic policy table, and determine that No. 1 network port of No. 1 switch has several UE now in use except this UE, its bandwidth taken is how many.If the bandwidth of No. 1 network port (100M) is all taken by other UE (as 192.168.1.2,192.168.1.3), then core switch then carries out buffer memory to this data flow.
If the bandwidth of No. 1 network port is not all taken by other UE, namely No. 1 network port also has remaining bandwidth, then No. 1 remaining bandwidth of the network port is carried out size with this data flow and is compared by core switch, if this data flow is less than No. 1 remaining bandwidth of the network port, then this data flow forwards by core switch, otherwise, core switch forwards in this data flow more than the part of No. 1 network port remaining bandwidth, and buffer memory will be carried out more than the part of No. 1 network port remaining bandwidth in this data flow, to prevent data packetloss.
Such as, suppose that No. 1 remaining bandwidth of the network port is 30M, and the size of this data flow is 60M, then the 30M in this data flow forwards by core switch, and other 30M carries out buffer memory, to prevent loss of data.
In the present embodiment, for each network port of access switch, all flows mailing to this network port, are constrained to the maximum network speed that this port is corresponding, for the part flowing exceed map network port maximum network speed received, be buffered in core switch.Describe, the core switch in the present embodiment is the core switch with large buffer memory before, is enough to reply network burst flow, there will not be packet loss phenomenon.
In the present embodiment, the flow control methods of above-mentioned core switch is the traffic shaping control method based on user's group (in other words based on port), all user terminals under each network port are considered as user's group, and each user's group does traffic shaping control based on the maximum network speed of the corresponding access switch network port.User's group can be 1 user terminal, also can be multiple user terminal.If the network port second line of a couplet of access switch only has 1 user terminal, so this user's group is exactly only have a user terminal.
When core switch forwards the data mailing to multiple user terminal simultaneously, the same port of what if these user terminals connected is same access switch, so the data summation mailing to these user terminals can be restricted to the maximum network speed of this port by core switch, to ensure to there will not be packet loss phenomenon, as for the data do not forwarded, core switch can carry out buffer memory.
When user terminal rolls off the production line, (namely user terminal has not been surfed the Net, such as close computer etc.), originally the dynamic address of application can expire, server can send message notifying, core switch is rolled off the production line by this user terminal of this Receive message, by the information of this user terminal from above-mentioned traffic policy list deletion.Like this, traffic policy table will upgrade according to the online situation of network user terminals dynamically automatically, thus achieves and control the shaping of whole net flow quantity intelligent.
Traffic shaping control method described in the present embodiment, can intelligently according to the actual conditions of different user, carry out customer flow shaping control, the problems such as video card pauses, voice call card pauses, online game card pauses or go offline solving the Network Packet Loss because network burst flow causes and then cause.
Flow control methods described in the present embodiment, by expanding the method for DHCPoption82, in conjunction with the flow control policy of core switch, achieve the buffer memory to inner-mesh network burst flow, shaping, control, meet the network application demand that Intranet is high to requirement of real-time.
Fig. 4 shows the flow chart of the core switch flow control methods that fifth embodiment of the invention provides, and see Fig. 4, the core switch flow control methods that the present embodiment provides comprises the steps:
Step 201: receive the second request message that access switch sends, described second request message is the message for IP address requesting that UE sends to described access switch, carries the first information that described access switch obtains according to the port information receiving the message for IP address requesting that described UE sends in this message.
Step 202: the data to be received to described UE side according to the current use information of the described first information and described port carry out flow control.
The core switch flow control methods that the present embodiment provides, the data receiving the current use information of the port of the message for IP address requesting that UE sends in the second request message with the first information that described core switch sends according to access switch and access switch to be received to corresponding UE side carry out flow control, thus prevent data packetloss phenomenon from occurring.Wherein, the port information receiving the message for IP address requesting that described UE sends is included in the first message.
The core switch flow control methods that the present embodiment provides, only need carry out whole net flow control on core switch, do not need network manager to carry out speed limit configuration to every platform access switch, the flow control methods therefore described in the present embodiment, implements more for convenience.
Sixth embodiment of the invention, on the basis of above-mentioned 5th embodiment, gives a kind of implementation of above-mentioned steps 202.
Step 202: the data to be received to described UE side according to the current use information of the described first information and described port carry out flow control.
In this step, core switch determines the maximum network speed of the port of the access switch at described UE place according to the described first information after, core switch carries out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side.
In the present embodiment, owing to including the IP address of UE request in the described first information, the mark ID of described access switch, the maximum network speed of the port numbers receiving the port of the message for IP address requesting that described UE sends and the port receiving the message for IP address requesting that described UE sends, therefore core switch can carry out flow control according to the maximum network speed of the port of the access switch at UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side, occur abnormal to avoid the application higher to requirement of real-time occurring causing because of Network Packet Loss or experience poor problem.
Seventh embodiment of the invention, on the basis of above-mentioned 6th embodiment, give the maximum network speed of the port of the access switch of above-mentioned core switch according to described UE place and one that other UE carry out flow control by the data that the flow sum of the data of this port accepts is to be received to described UE side realizes situation.
In the present embodiment, core switch realizes according to the flow control mode as described in D1.
D1: if other UE are exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, then the data that described core switch is to be received to described UE side carry out buffer memory.
Eighth embodiment of the invention, on the basis of above-mentioned 6th and the 7th embodiment, give the maximum network speed of the port of the access switch of above-mentioned core switch according to described UE place and another kind that other UE carry out flow control by the data that the flow sum of the data of this port accepts is to be received to described UE side realizes situation.
In the present embodiment, core switch realizes according to the flow control mode as described in D2.
D2: if other UE pass through the maximum network speed of flow sum lower than this port of the data of this port accepts, then described core switch is according to the comparative result of the uninterrupted of the idle network bandwidth of this port and described UE side data to be received, and the data to be received to described UE side carry out flow control:
D21: if the flow of described UE side data to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE side forward by described core switch;
D22: if the flow of described UE side data to be received is greater than the idle network bandwidth of this port, then the part not exceeding the idle network bandwidth of this port in data to be received for described UE side is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
In ninth embodiment of the invention, give the step D0 carried out before above-mentioned steps D1 or D2.
Step D0: obtain the flow sum of other UE by the data of this port accepts.
In this step, the traffic policy table of core switch according to above-described embodiment obtains the flow sum of other UE by the data of this port accepts.Wherein traffic policy table and its process of establishing see above-described embodiment, no longer can describe in detail herein.
Core switch is before the flow control carrying out above-mentioned steps D1 or D2, first obtain the flow sum of other UE by the data of this port accepts according to above-mentioned traffic policy table, and then according to the uninterrupted of the maximum network speed of this port and UE side data to be received, flow control is carried out to described UE.
Particularly, the process that core switch carries out flow control is: core switch is according to the object IP of the data flow received, as 192.168.1.1, inquire about above-mentioned traffic policy table 1, the switch that the object terminal of this data flow is corresponding is No. 1 switch, corresponding port numbers is No. 1 network port, and the maximum rate of No. 1 network port is 100M.
Now need No. 1 network port determining No. 1 switch except this UE, to have now several UE in use, its bandwidth taken is how many.If the bandwidth of No. 1 network port (100M) is all taken by other UE (as 192.168.1.2,192.168.1.3), then core switch then carries out buffer memory to this data flow.
If the bandwidth of No. 1 network port is not all taken by other UE, namely No. 1 network port also has remaining bandwidth, then No. 1 remaining bandwidth of the network port is carried out size with this data flow and is compared by core switch, if this data flow is less than No. 1 remaining bandwidth of the network port, then this data flow forwards by core switch, otherwise, core switch forwards in this data flow more than the part of No. 1 network port remaining bandwidth, and buffer memory will be carried out more than the part of No. 1 network port remaining bandwidth in this data flow, to prevent data packetloss.
Such as, suppose that No. 1 remaining bandwidth of the network port is 30M, and the size of this data flow is 60M, then the 30M in this data flow forwards by core switch, and other 30M carries out buffer memory, to prevent loss of data.
In the present embodiment, for each network port of access switch, all flows mailing to this network port, are constrained to the maximum network speed that this port is corresponding, for the part flowing exceed map network port maximum network speed received, be buffered in core switch.Describe, the core switch in the present embodiment is the core switch with large buffer memory before, is enough to reply network burst flow, there will not be packet loss phenomenon.
In the present embodiment, core switch is for the network port of same access switch, and all flows mailing to this network port, are constrained to the maximum network speed that this port is corresponding, for the part flowing exceed map network port maximum network speed received, be buffered in core switch.Describe, the core switch in the present embodiment is the core switch with large buffer memory before, is enough to reply network burst flow, there will not be packet loss phenomenon.
In the present embodiment, core switch carries out flow control according to the maximum network speed of the port of the access switch at described UE place, other UE by the data that the size of the flow sum of the data of this port accepts and described UE data (this refers to the data that UE is to be received) to be received is to be received to described UE side, when other UE to be exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, core switch data to be received to described UE carry out buffer memory; When other UE are by maximum network speed lower than this port of the flow sum of the data of this port accepts, core switch is according to the comparative result of the uninterrupted of the idle network bandwidth (the remaining network rate being supplied to described UE of this port) of this port and described UE data to be received, the data to be received to described UE carry out flow control: if the flow of described UE data to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE forward by core switch; If the flow of the data that described UE is to be received is greater than the idle network bandwidth of this port, then the part of the idle network bandwidth not exceeding this port in data to be received for described UE forwards by core switch, the part exceeding the idle network bandwidth of this port is carried out buffer memory, thus prevents the appearance of packet loss phenomenon.
The flow control methods of above-mentioned core switch is the traffic shaping control method based on port user group, namely all user terminals under each network port are considered as user's group, and each user's group does traffic shaping control based on the maximum network speed of the corresponding access switch network port.User's group can be 1 user terminal, also can be multiple user terminal.If the network port second line of a couplet of access switch only has 1 user terminal, so this user's group is exactly only have a user terminal.
When core switch forwards the data mailing to multiple user terminal simultaneously, core switch can judge the same port for same access switch whether these user terminals connect, if what these user terminals connected is the same port of same access switch, so the data summation mailing to these user terminals can be restricted to the maximum network speed of this port by core switch, to ensure to there will not be packet loss phenomenon, as for the data do not forwarded, core switch can carry out buffer memory.
Tenth embodiment of the invention provides a kind of access switch volume control device, and see Fig. 5, this device comprises:
Receiving element 51, for receiving the first request message for IP address requesting that user terminal UE sends;
Acquiring unit 52, for receiving port information during described first request message according to described receiving element 51, obtains for making core switch be the first information that this UE carries out traffic policy control;
Processing unit 53, the first information for being obtained by described acquiring unit 52 is added in the first request message that described receiving element 51 receives, and obtains the second request message;
Transmitting element 54, sends core switch for the second request message obtained by described processing unit 53, carries out flow control to make described core switch according to the current use information of the described first information and described port to described UE.
In eleventh embodiment of the invention, on the basis of the above-mentioned ten embodiment, described transmitting element 54 specifically for: by second request message send core switch, carry out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE to make described core switch;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information.
Wherein, the described first information comprises: the IP address of UE request, receive the access switch of described first request message mark ID, receive the port numbers of the port of described first request message and receive the maximum network speed of port of described first request message.
In twelveth embodiment of the invention, on the basis of above-mentioned 11 embodiment, described transmitting element 54 specifically for:
Second request message is sent core switch, carries out flow control according to the uninterrupted of the maximum network speed of the port of the access switch at described UE place, described UE data to be received and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE to make described core switch:
If other UE are exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, then the data that described core switch is to be received to described UE carry out buffer memory;
If other UE pass through the maximum network speed of flow sum lower than this port of the data of this port accepts, then described core switch is according to the comparative result of the uninterrupted of the idle network bandwidth of this port and described UE data to be received, and the data to be received to described UE carry out flow control:
If the flow of the data that described UE is to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE forward by described core switch; Otherwise the part of the idle network bandwidth not exceeding this port in data to be received for described UE is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
Core switch described in the present embodiment is the core switch with large buffer memory, is enough to reply network burst flow, there will not be packet loss.
Thirteenth embodiment of the invention provides a kind of access switch, and this access switch comprises the access switch volume control device described in above-described embodiment the 9th to the 12 any embodiment.
Because the access switch described in the present embodiment includes above-mentioned access switch volume control device; therefore the access switch described in the present embodiment can make core switch carry out flow control to the downlink data mailing to UE, occurs abnormal to avoid some application higher to requirement of real-time occurring causing because of Network Packet Loss or experiences poor problem.
Fourteenth embodiment of the invention provides a kind of core switch volume control device, and see Fig. 6, this core switch volume control device comprises:
Receiving element 61, for receiving the second request message that access switch sends, described second request message is the message for IP address requesting that UE sends to described access switch, carries the first information that described access switch obtains according to the port information receiving the message for IP address requesting that described UE sends in this message;
Flow controlling unit 62, carries out flow control for the data to be received to described UE side according to the current use information of the described first information and described port.
In fifteenth embodiment of the invention, on the basis of above-mentioned 14 embodiment, described flow controlling unit 62 specifically for:
Flow control is carried out by the data that the flow sum of the data of this port accepts is to be received to described UE side according to the maximum network speed of the port of the access switch at described UE place and other UE;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information.
Wherein, the described first information comprises: the IP address of UE request, the mark ID of described access switch, receive the port numbers of the port of the message for IP address requesting that described UE sends and receive the maximum network speed of port of the message for IP address requesting that described UE sends.
In sixteenth embodiment of the invention, on the basis of above-mentioned 15 embodiment, described flow controlling unit 62 comprises: the first judge module and control module;
Described first judge module, for judging whether other UE are exceeded by the flow sum of the data of the port accepts of the access switch at described UE place or to equal the maximum network speed of this port;
Data to be received for described UE side, during for determining that at described first judge module other UE to be exceeded by the flow sum of the data of this port accepts or to equal the maximum network speed of this port, are carried out buffer memory by described control module.
In seventeenth embodiment of the invention, on the basis of above-mentioned 15 and 16 embodiment, described flow controlling unit 62 also comprises: the second judge module;
Described second judge module, during for determining the maximum network speed of the flow sum of other UE by the data of this port accepts lower than this port at described first judge module, judge whether the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port;
Data to be received for described UE side, time also for determining that the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port at described second judge module, are forwarded by described control module;
Described control module, time also for determining that the flow of the data that described UE side is to be received is greater than the idle network bandwidth of this port at described second judge module, the part not exceeding the idle network bandwidth of this port in data to be received for described UE side is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.Access switch volume control device described in the present embodiment has larger buffer memory, is enough to reply network burst flow, there will not be packet loss.
In eighteenth embodiment of the invention, described flow controlling unit 62 also comprises acquisition module;
Described acquisition module, for obtaining the flow sum of other UE by the data of the port accepts of the access switch at described UE place.
Particularly, described acquisition module can obtain the flow sum of other UE by the data of the port accepts of the access switch at described UE place by the flow control policy table described in above-described embodiment.
Other UE that acquisition module in the present embodiment obtains, by the flow sum of the data of the port accepts of the access switch at described UE place, can provide basis for estimation for the first judge module in above-described embodiment.
Nineteenth embodiment of the invention provides a kind of core switch, and this core switch comprises the core switch volume control device as described in above-mentioned the ten four to ten eight any embodiment.
Because the core switch described in the present embodiment includes above-mentioned core switch volume control device; therefore the core switch described in the present embodiment can carry out flow control to the downlink data mailing to UE, occurs abnormal to avoid some application higher to requirement of real-time occurring causing because of Network Packet Loss or experiences poor problem.
Wherein, the access switch volume control device described in the present invention the ten to ten two embodiment may be used for performing access switch flow control methods described in first to fourth embodiment above-mentioned, its principle and technique effect similar.In like manner, the core switch volume control device described in the present invention the ten four to ten eight embodiment may be used for performing the core switch flow control methods described in above-mentioned five to nine embodiment, its principle and technique effect similar.All no longer describe in detail herein.
Above embodiment only for illustration of technical scheme of the present invention, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a core switch flow control methods, is characterized in that, comprising:
Receive the second request message that access switch sends, described second request message is the message for IP address requesting that UE sends to described access switch, carries the first information that described access switch obtains according to the port information receiving the message for IP address requesting that described UE sends in this message;
The data to be received to described UE side according to the current use information of the described first information and described port carry out flow control.
2. method according to claim 1, is characterized in that, the data to be received to described UE side according to the current use information of the described first information and described port carry out flow control, comprising:
Flow control is carried out by the data that the flow sum of the data of this port accepts is to be received to described UE side according to the maximum network speed of the port of the access switch at described UE place and other UE;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information;
Wherein, the described first information comprises:
The IP address of UE request, the mark ID of described access switch, receive the port numbers of the port of the message for IP address requesting that described UE sends and receive the maximum network speed of port of the message for IP address requesting that described UE sends.
3. method according to claim 2, it is characterized in that, carry out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side, comprising:
If other UE are exceeded by the flow sum of the data of this port accepts or equal the maximum network speed of this port, then the data that described core switch is to be received to described UE side carry out buffer memory.
4. method according to claim 3, it is characterized in that, carry out flow control according to the maximum network speed of the port of the access switch at described UE place and other UE by the data that the flow sum of the data of this port accepts is to be received to described UE side, also comprise:
If other UE pass through the maximum network speed of flow sum lower than this port of the data of this port accepts, then described core switch is according to the comparative result of the uninterrupted of the idle network bandwidth of this port and described UE side data to be received, and the data to be received to described UE side carry out flow control:
If the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port, then data to be received for described UE side forward by described core switch; Otherwise the part not exceeding the idle network bandwidth of this port in data to be received for described UE side is forwarded, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
5. the method according to claim 3 or 4, it is characterized in that, before the maximum network speed of the port of the access switch according to described UE place and other UE carry out flow control by the data that the flow sum of the data of this port accepts is to be received to described UE side, described method also comprises:
Obtain the flow sum of other UE by the data of this port accepts.
6. a core switch volume control device, is characterized in that, comprising:
Receiving element, for receiving the second request message that access switch sends, described second request message is the message for IP address requesting that UE sends to described access switch, carries the first information that described access switch obtains according to the port information receiving the message for IP address requesting that described UE sends in this message;
Flow controlling unit, carries out flow control for the data to be received to described UE side according to the current use information of the described first information and described port.
7. device according to claim 6, is characterized in that, described flow controlling unit, specifically for:
Flow control is carried out by the data that the flow sum of the data of this port accepts is to be received to described UE side according to the maximum network speed of the port of the access switch at described UE place and other UE;
Wherein, the maximum network speed of the port of the access switch at described UE place is determine according to the described first information;
Wherein, the described first information comprises:
The IP address of UE request, the mark ID of described access switch, receive the port numbers of the port of the message for IP address requesting that described UE sends and receive the maximum network speed of port of the message for IP address requesting that described UE sends.
8. device according to claim 7, is characterized in that, described flow controlling unit comprises: the first judge module and control module;
Described first judge module, for judging whether other UE are exceeded by the flow sum of the data of the port accepts of the access switch at described UE place or to equal the maximum network speed of this port;
Data to be received for described UE side, during for determining that at described first judge module other UE to be exceeded by the flow sum of the data of this port accepts or to equal the maximum network speed of this port, are carried out buffer memory by described control module.
9. device according to claim 8, is characterized in that, described flow controlling unit also comprises: the second judge module;
Described second judge module, during for determining the maximum network speed of the flow sum of other UE by the data of this port accepts lower than this port at described first judge module, judge whether the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port;
Data to be received for described UE side, time also for determining that the flow of the data that described UE side is to be received is less than or equal to the idle network bandwidth of this port at described second judge module, are forwarded by described control module;
Described control module, time also for determining that the flow of the data that described UE side is to be received is greater than the idle network bandwidth of this port at described second judge module, described UE is treated the part not exceeding the idle network bandwidth of this port in the data that side joint is received forwards, the part exceeding the idle network bandwidth of this port is carried out buffer memory.
10. a core switch, is characterized in that, comprises the core switch volume control device as described in any one of claim 6 ~ 9.
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