CN101789880A - Method for realizing uplink QoS (Quality of Service) based on IP access network and multi-service access gateway - Google Patents
Method for realizing uplink QoS (Quality of Service) based on IP access network and multi-service access gateway Download PDFInfo
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Abstract
The invention discloses a method for realizing uplink QoS (Quality of Service) based on an IP access network and a multi-service access gateway. The method comprises the following steps: the multi-service access gateway judges whether the uplink flow flowing through each link node exceeds the uplink early-warning threshold of each link node according to the uplink early-warning threshold of multiple link nodes on the uplink from a client to the multi-service access gateway; and the multi-service access gateway reduces the flow of the uplink low priority service so as to ensure the QoS of the uplink high priority service flow at the client if the uplink flow of any one link node flowing through multiple link nodes exceeds the uplink early-warning threshold of any one link node. The invention can effectively prevent congestion of the uplink and satisfy the quality of service of the uplink flow of the high priority service at lower reformation and cost.
Description
Technical field
The present invention relates to the fused business network field of the Internet, more specifically, relate to and a kind ofly realize up service quality (Quality of Service, method QoS) and multi-service access gateway based on the IP Access Network.
Background technology
Along with Internet development and universal, the Internet is obvious all the more as the development trend of following UNE.Multimedia communication such as voice, video and other will be by the unified carryings in the Internet such as the crucial applied business in the Internets such as video monitoring, this will change the transfer mode that traditional Internet is just done one's best, and implement service bandwidth and quality assurance end to end dynamically to the so-called key business stream that needs ensure.Key business for multimedia communication and video monitoring etc. must ensure need all provide dynamic quality of service guarantee in key aspect of IP network and access aspect.At present, the solution that multiple comparatively feasible dynamic mass ensures has appearred in key aspect.
In the access aspect, down direction can be by the Access Network source the down direction deploy H-QoS (Hierarchical QoS) of access side ports of multiservice gateway realize that tentatively dynamic descending QoS ensures that this has also satisfied following behavior master's Internet service pattern preferably.But,, just can't satisfy the demands in the face of symmetric form or when going up behavior master professional.Because device category complexity, enormous amount, problem complexity in the Access Network.Therefore in Access Network from the source comprehensive pointwise dispose relatively difficulty of up QoS mechanism.
Summary of the invention
The technical problem that the present invention will solve provides and a kind ofly realizes the method for up QoS can satisfying the qos requirement of symmetric form or above behavior master's business to uplink traffic in the IP Access Network based on the IP Access Network.
The invention provides and a kind ofly realize the method for up QoS based on the IP Access Network, this method comprises: multi-service access gateway judges respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes; Surpass its corresponding up link threshold value of warning if flow through the uplink traffic of any one link nodes in a plurality of link nodes, then reduce the flow of up low priority traffice, to guarantee the QoS of the up high-priority service flow of client by multi-service access gateway.
According to an embodiment of the inventive method, the entrained a plurality of signs of uplink traffic comprise the downlink physical port-mark of CVLAN (Customer VLAN) sign, PVLAN (Provider VLAN) sign and multi-service access gateway.
According to another embodiment of the inventive method, this method also comprises: multi-service access gateway is the threshold value that the high-priority service of client is provided with access rate; Multi-service access gateway is that client to a plurality of link nodes on the up link of multi-service access gateway are provided with CVLAN up link threshold value of warning, PVLAN up link threshold value of warning and multi-service access gateway physical port up link threshold value of warning respectively.
According to the another embodiment of the inventive method, judge that the step whether uplink traffic flow through each link nodes surpasses the up link threshold value of warning of each link nodes comprises: judge according to the CVLAN sign whether the uplink traffic that flows through the CVLAN link nodes surpasses CVLAN up link threshold value of warning; Judge according to the PVLAN sign whether the uplink traffic that flows through the PVLAN link nodes surpasses PVLAN up link threshold value of warning; Judge according to the downlink physical port-mark of multi-service access gateway whether the uplink traffic that flows through the links of physical ports of same node surpasses multi-service access gateway physical port up link threshold value of warning.
Embodiment again according to the inventive method, the step that is reduced the flow of up low priority traffice by multi-service access gateway comprises: surpass under the situation of CVLAN up link threshold value of warning in the uplink traffic that flows through the CVLAN link nodes, reduce the flow of the low priority traffice of client transmission; Surpass under the situation of PVLAN up link threshold value of warning in the uplink traffic that flows through the PVLAN link nodes, evenly reduce the flow of the low priority traffice of each client that flows through the PVLAN link nodes; Surpass under the situation of multi-service access gateway physical port up link threshold value of warning in the uplink traffic that flows through the links of physical ports of same node, evenly reduce the flow of the low priority traffice of each client that flows through the links of physical ports of same node.
Embodiment again according to the inventive method, after reducing the flow of up low priority traffice by multi-service access gateway, utilize the upper strata flow control mechanism to reduce the traffic volume of making a start, this method also comprises: it is overtime that client judges that TCP (Transmission Control Protocol) that whether message that sends low priority traffice takes place connects timing response; If it is overtime that the TCP connection timing response of low priority traffice takes place, then client reduces the flow of up low priority traffice by flow-control mechanism and retransmits.
The method that realizes up QoS based on the IP Access Network provided by the invention, come the uplink traffic that congested a plurality of link nodes may take place of monitor client to the up link of multi-service access gateway by multi-service access gateway, when flowing through the uplink traffic that congested a plurality of link nodes may take place and surpass the up link threshold value of warning of each link nodes, reduce the flow of the low priority traffice that sends, the QoS of the uplink traffic of assurance symmetric form or above behavior master's business, thereby can prevent the congested of up link effectively, satisfy the service quality of the uplink traffic of high-priority service with less transformation and lower cost.
Another technical problem that the present invention will solve provides a kind of multi-service access gateway, can satisfy the qos requirement of symmetric form or above behavior master's business to uplink traffic in the IP Access Network.
The present invention also provides a kind of multi-service access gateway, this gateway comprises: early-warning judgment module is used for judging respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes; The early warning processing module, be used under the situation of uplink traffic above the up link threshold value of warning of any one link nodes of any one link nodes that flows through a plurality of link nodes, reduce the flow of up low priority traffice, to guarantee the QoS of the up high-priority service flow of client.
Multi-service access gateway embodiment according to the present invention, the entrained a plurality of signs of uplink traffic comprise the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway.
Another embodiment of multi-service access gateway according to the present invention, this multi-service access gateway also comprises: access rate is provided with module, is used to the high-priority service of client that the threshold value of access rate is set; Threshold value of warning is provided with module, is used to client to a plurality of link nodes on the up link of multi-service access gateway that CVLAN up link threshold value of warning, PVLAN up link threshold value of warning and multi-service access gateway physical port up link threshold value of warning are set respectively.
The another embodiment of multi-service access gateway according to the present invention, early-warning judgment module comprises: CVLAN up link early warning judging unit is used for judging according to the CVLAN sign whether the uplink traffic that flows through the CVLAN link nodes surpasses CVLAN up link threshold value of warning; PVLAN up link early warning judging unit is used for judging according to the PVLAN sign whether the uplink traffic that flows through the PVLAN link nodes surpasses PVLAN up link threshold value of warning; Physical port up link early warning judging unit is used for judging according to the downlink physical port-mark of multi-service access gateway whether the uplink traffic that flows through the links of physical ports of same node surpasses multi-service access gateway physical port up link threshold value of warning.
The embodiment again of multi-service access gateway according to the present invention, the early warning processing module comprises: CVLAN early warning processing unit, be used for surpassing under the situation of CVLAN up link threshold value of warning, reduce the flow of the low priority traffice of client transmission in the uplink traffic that flows through the CVLAN link nodes; PVLAN early warning processing unit is used for surpassing under the situation of PVLAN up link threshold value of warning in the uplink traffic that flows through the PVLAN link nodes, evenly reduces the flow of the low priority traffice of each client that flows through the PVLAN link nodes; Physical port early warning processing unit, be used for surpassing under the situation of multi-service access gateway physical port up link threshold value of warning, evenly reduce the flow of the low priority traffice of each client that flows through the links of physical ports of same node in the uplink traffic that flows through the links of physical ports of same node.
Multi-service access gateway provided by the invention, come the uplink traffic that congested a plurality of link nodes may take place of monitor client to the up link of multi-service access gateway by early-warning judgment module and early warning processing module, when flowing through the uplink traffic that congested a plurality of link nodes may take place and surpass the up link threshold value of warning of each link nodes, reduce the flow of the low priority traffice that sends, the QoS of the uplink traffic of assurance symmetric form or above behavior master's business, thereby can prevent the congested of up link effectively, satisfy the service quality of the uplink traffic of high-priority service with less transformation and lower cost.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of an embodiment of the inventive method.
Fig. 2 is the schematic flow sheet of another embodiment of the inventive method.
Fig. 3 is the schematic flow sheet of the another embodiment of the inventive method.
Fig. 4 is a network architecture schematic diagram of using an example of the inventive method.
Fig. 5 uses the tactful schematic diagram that the inventive method realizes another example of three grades of H-QoS.
Fig. 6 is the structural representation of an embodiment of multi-service access gateway of the present invention.
Fig. 7 is the structural representation of another embodiment of multi-service access gateway of the present invention.
Fig. 8 is the structural representation of the another embodiment of multi-service access gateway of the present invention.
Fig. 9 is the structural representation of an embodiment again of multi-service access gateway of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.Exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, but do not constitute improper qualification of the present invention.
Because multi-service access gateway MSE (Multi-Service Edge) is the end at Access Network, it is congested to it is generally acknowledged that data had just taken place before not arriving MSE, ensures so MSE can not carry out QoS to uplink service stream.But in fact the transmission of packet is moment, and data traffic is ascending individual time course is arranged also, that is, insert take place congested before, MSE can monitor related service flow and variation thereof.The present invention just begins to reduce the low priority traffice flow of flowing through herein when finding that there is congested trend in the somewhere.Application process under these packets that are delayed or abandon or TCP connection reduce the traffic volume of these low priority traffices by flow-control mechanism (such as sliding window protocol), thereby reach the QoS purpose of avoiding congested and ensureing the high-priority service flow.
Key of the present invention is the up direction in the access side ports of multi-service access gateway MSE, increases by three grades of QoS scheduler modules, is positioned at the source of Access Network end rather than up direction and the difficulty that is difficult to reach QoS scheduling controlling effect to overcome MSE.It all is the upstream and downstream bandwidth symmetry generally that Access Network is established on (for example being equipped with DSLAM (Digital Subscriber Line Access Multiplexer)) in user's group, and user's flow is descending much larger than up generally.Therefore, when three grades of QoS scheduling carrying out up direction, maximum bandwidth at different levels is set is less than actual corresponding physical bandwidth (for example, be 50% of DSLAM uplink relay FE (Fast Ethernet)/GE (Gigabit Ethernet), the access side ports GE/10GE of MSE 50%).MSE can also be far from taking place when congested at Access Network like this, but it is on the rise and may produce when congested to monitor flow, begins corresponding non-protection flow (for example, low priority traffice flow) is abandoned early.The reservation of above-mentioned bandwidth promptly, bottleneck occurs and need reduce that transmitted traffic sets apart and bandwidth space for the source client sends data and detects in the network.
Above-mentioned three grades of QoS mainly between user's application stream (promptly, subscriber's line), between the user (promptly, user's group, for example, DSLAM trunking port FE/GE) and between user group (promptly, MSE port GE or 10GE) these three aspects carry out traffic monitoring, and in time feed back, (for example guarantee protection flow up to specification, the high-priority service flow) can pass through smoothly, guarantee that simultaneously total flow at different levels is no more than the maximum bandwidth into settings at different levels, produce the congested and uncontrolled bag of throwing out without care to avoid the network element under MSE.If exceed for the maximum bandwidth of settings at different levels then in MSE, abandon non-protection flow, and evenly abandon the non-protection flow in each user, the every user group.
Fig. 1 is the schematic flow sheet of an embodiment of the inventive method.
As shown in Figure 1, this embodiment may further comprise the steps:
S102, because the bottleneck point of reality (promptly in the network, certain link nodes) be to separate physically with MSE, but the flow of these bottleneck point of flowing through all will flow to MSE, therefore need be that the flow of flowing through is stamped different signs respectively in these bottleneck point, the statistics that MSE can carry out packet according to these signs with detected, wherein, entrained a plurality of signs comprise the CVLAN sign in the upstream data bag, the downlink physical port-mark of PVLAN sign and multi-service access gateway, CVLAN is designated nexine VLAN sign, the flow that is used for a subscriber's line of sign on the user port of local side apparatus, PVLAN is designated outer VLAN identification, be used on the convergence switch port, identifying user's group (promptly, the DLSAM trunking port) flow, this port is generally FE or GE, the downlink physical port-mark of multi-service access gateway is used to identify the access side ports of MSE self, be generally GE or 10GE, multi-service access gateway judges respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes after receiving from the uplink traffic of client;
S104, if the uplink traffic that flows through any one link nodes in a plurality of link nodes surpasses the up link threshold value of warning of this any one link nodes, then reduce the flow of up low priority traffice by multi-service access gateway, pass through the crowded transmitted traffic that reduces of flow-control mechanism sensing network by client, thereby its total flow is dropped to below the early warning threshold values, to guarantee the QoS of the up high-priority service flow of client, and then prevent network congestion, alternatively, can adopt the flow-control mechanism that reduces TCP connection traffic volume at double.
At present, the equipment of Access Network is irregular and quantity is very huge (for example, relating to the equipment such as convergence switch, DSLAM and broadband client gateways of One's name is legion), is the difficult point of implementing network end-to-end QoS.The way of existing up QoS be to all network element updatings to support the priority service classification and to carry out static configuration, simultaneously the client gateways of One's name is legion is carried out dynamic strategy and issues control, this scheme difficulty is very big and very complicated.
And this embodiment of the present invention is easy to carry out fast on existing network and deployment, and need not all network elements in the access network under the existing MSE are transformed, come the uplink traffic that congested a plurality of link nodes may take place of monitor client to the up link of multi-service access gateway by multi-service access gateway, when flowing through the uplink traffic that congested a plurality of link nodes may take place and surpass the up link threshold value of warning of any one link nodes, reduce the flow of the low priority traffice that sends, the QoS of the uplink traffic of assurance symmetric form or above behavior master's high-priority service.
Fig. 2 is the schematic flow sheet of another embodiment of the inventive method.
As shown in Figure 2, this embodiment may further comprise the steps:
S202, multi-service access gateway is the threshold value that the high-priority service of client is provided with access rate, for example, for high-priority service such as speech business and video communication are provided with Committed Access Rate CAR (Committed Access Rate), use too much bandwidth resources without application to prevent the user;
S204, multi-service access gateway are that client to a plurality of link nodes on the up link of multi-service access gateway are provided with CVLAN up link threshold value of warning, PVLAN up link threshold value of warning and multi-service access gateway physical port up link threshold value of warning respectively;
S206, multi-service access gateway judges respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes;
S208, if the uplink traffic that flows through any one link nodes in a plurality of link nodes surpasses the up link threshold value of warning of this any one link nodes, then reduce the flow of up low priority traffice, to guarantee the QoS of the up high-priority service flow of client by multi-service access gateway.
Particularly, judge that the step whether uplink traffic flow through each link nodes surpasses the up link threshold value of warning of each link nodes comprises: judge according to the CVLAN sign whether the uplink traffic that flows through the CVLAN link nodes surpasses CVLAN up link threshold value of warning; Judge according to the PVLAN sign whether the uplink traffic that flows through the PVLAN link nodes surpasses PVLAN up link threshold value of warning; Judge according to the downlink physical port-mark of multi-service access gateway whether the uplink traffic that flows through the links of physical ports of same node surpasses multi-service access gateway physical port up link threshold value of warning.
In addition, the step that is reduced the flow of up low priority traffice by multi-service access gateway comprises: surpass under the situation of CVLAN up link threshold value of warning in the uplink traffic that flows through the CVLAN link nodes, reduce the flow of the low priority traffice of client transmission; Surpass under the situation of PVLAN up link threshold value of warning in the uplink traffic that flows through the PVLAN link nodes, evenly reduce the flow of the low priority traffice of each client that flows through the PVLAN link nodes; Surpass under the situation of multi-service access gateway physical port up link threshold value of warning in the uplink traffic that flows through the links of physical ports of same node, evenly reduce the flow of the low priority traffice of each client that flows through the links of physical ports of same node.
Three congested link nodes by taking place in multi-service access gateway monitoring and the management up link Access Network in this embodiment, by making a start of common business of networking stream by reducing the flow-control mechanism that TCP connects traffic volume at double, utilize the method for this " back-pressure " to abandon low priority traffice such as online message in advance, thereby avoid the congested of Access Network up link.This embodiment need not dispose up qos policy in access network, only need MSE is done the up service quality that less transformation just can be satisfied high-priority service in symmetric form such as voice, video or above behavior master's the business with lower cost, thereby quality of service provides essential condition with further raising user experience in order to improve end to end.
Fig. 3 is the schematic flow sheet of the another embodiment of the inventive method.
As shown in Figure 3, this embodiment may further comprise the steps:
S302, multi-service access gateway judges respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes;
S304, if the uplink traffic that flows through any one link nodes in a plurality of link nodes surpasses the up link threshold value of warning of this any one link nodes, then the flow that reduces up low priority traffice by multi-service access gateway (promptly, wrap actions such as delaying and abandon accordingly), to guarantee the QoS of the up high-priority service flow of client;
S306, whether client is crowded by the flow-control mechanism sensing network, and for example, it is overtime that client judges that TCP that whether message that sends low priority traffice takes place connects timing response;
S308, if network congestion (for example, the TCP connection timing response that low priority traffice takes place is overtime), then client reduces the flow of up low priority traffice by the flow-control mechanism that reduces TCP connection traffic volume at double, thereby its total flow is dropped to below the early warning threshold values.
Reduce the flow of low priority traffice rapidly by reducing the flow-control mechanism that TCP connects traffic volume among this embodiment at double, thereby avoid the congested of a plurality of link nodes place in the up link in advance.
Fig. 4 is a network architecture schematic diagram of using an example of the inventive method.
As shown in Figure 4, the whole network architecture of this example comprises: user terminal 11 (for example, PC), voice terminal 12, video communication terminal 13 etc., and respectively as the client of data, voice and video communication.Describe conveniently for the back, need the business of quality assurance to be called high-priority service voice and video communication etc., data services such as common online are called low priority traffice.Comprise also in this network architecture that (Residential Gateway RG), is used to realize the access function of above-mentioned user terminal 11, voice terminal 12 and video communication terminal 13 etc. to family gateway equipment 14; Access network (comprising DSLAM15, switch SW16, ONU (Optical Network Unit) 17 or OLT (Optical Line Terminal) 18), the general logic tree that adopts, (that is, PVC of each user (Permanent Virtual Circuit)/PVLAN) carries the unified PUPV of employing mode; Multi-service access gateway MSE19 is equivalent to the root node of whole logic tree, is used for the network insertion of leading subscriber business, for user's distributing IP address and realize H-QoS (Hierarchical QoS) strategy.
The above-mentioned network architecture is at the tree network construction characteristic of operator's access network, proposition realizes three grades of up H-QoS strategies based on the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway on the root node equipment MSE of access network, monitor in real time by MSE three congested link nodes may take place in the access network, be combined into again the few TCP of demultiplication connect traffic volume flow-control mechanism (according to statistics, the business of networking that connects based on TCP account for the Internet total flow about 90%) control the flow of low priority traffice.Method by this " back-pressure " abandons low priority traffice such as online message in advance, can prevent the congested of Access Network up link effectively, just can satisfy the up service quality of high-priority service such as voice and video communication with less transformation and lower cost.
In this network architecture, MSE equipment is the key node that solves operator's access network uplink traffic qos policy.Three congested link nodes may take place and be distributed in 1., 2., 3. upward in the access network up direction.Wherein, 1. link nodes refers to the link between RG and ONU or the DSLAM, may cause congestedly by multiple business such as single domestic consumer's voice, video communication, data and other, come this link of unique identification by the inner VLAN (being defined as CVLAN) of configuration; 2. link nodes refers to the link between ONU or DSLAM and OLT or the convergence switch, may cause congestedly by multiple business such as a plurality of domestic consumers' of polymerization voice, video communication, data and other, come this link of unique identification by the outside VLAN (being defined as PVLAN) of configuration; This link still may be the FE link, generally to adopt the GE link between DSLAM and convergence switch; 3. link nodes refers to the link between OLT or convergence switch and the MSE, generally is the GE link, and can be upgraded to the 10GE link future, and this link further converges domestic consumer's multiple business flow, by this link of MSE downlink physical port unique identification.
MSE in this example judges by the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway whether the flow that flows through each link nodes surpasses threshold value of warning separately, reduce the flow of low priority traffice surpassing under the situation of threshold value of warning, thereby avoid the congested of up link in advance by reducing the flow-control mechanism that TCP connects traffic volume at double.
Fig. 5 uses the tactful schematic diagram that the inventive method realizes another example of three grades of H-QoS.
As shown in Figure 5, in this example, comprise user 1-4, user 1 and user 2 all have voice and common business of networking, the Committed Access Rate CAR of voice is 100k, and user 3 and user 4 all have video communication and common business of networking, and the Committed Access Rate CAR of video communication is 2M.User 1 uplink traffic arrives MSE physical port 1 up link node through CVLAN1 up link node, PVLAN1 up link node; User 2 uplink traffic arrives MSE physical port 1 up link node through CVLAN2 up link node, PVLAN1 up link node; User 3 uplink traffic arrives MSE physical port 1 up link node through CVLAN3 up link node, PVLAN2 up link node; User 4 uplink traffic arrives CVLAN4 up link node, PVLAN2 up link node in MSE physical port 1 up link node.
After user 1 to 4 uplink traffic is flowed through MSE, three congested link nodes on MSE, realize three grades of up H-QoS strategies, may take place in the real-time monitoring access network based on the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway.
MSE carries out corresponding speed limit to high-priority service such as each user's voice and video communications, uses the too much bandwidth resources without application to prevent the user; And to the default respectively threshold value of warning of the uplink bandwidth of three link nodes.When the uplink traffic of any one link nodes surpasses its threshold value of warning, reduce the flow of low priority traffice, for example, begin to abandon the message of common business of networking; Common business of networking generally connects based on TCP, source end equipment (for example, user's PC) is applied to the flow-control mechanism that the few TCP of demultiplication connects traffic volume, promptly, after source end equipment sends message at every turn, after causing tcp connect timeout because of the network congestion dropping packets, the value of source end equipment TCP congestion window is set to half of currency, by this flow-control mechanism that reduces TCP connection traffic volume at double, cause that the uplink traffic of common business of networking reduces rapidly in the Access Network, thereby it is congested to avoid up link to take place in advance.
If adopting above-mentioned mechanism back finds still can't reduce such as the flow of low priority traffices such as online flow, then can think user terminal PI virus, come the position of locating terminal again in conjunction with downlink physical port-mark, PVLAN sign and three parameters of CVLAN sign of multi-service access gateway, the notice webmaster is reduced to relatively little bandwidth with the terminal forces traffic.
Below further specify MSE by two instantiations and how to realize three grades of H-QoS strategies.
The domestic consumer who inserts with ADSL (Asymmetric Digital Subscriber Line) is an example, suppose to apply for simultaneously voice and common business of networking, wherein, the upstream and downstream bandwidth of speech business flow is 100k, the downlink bandwidth of data service is 4M, and up direction may surpass 600k because P2P (Peer toPeer) etc. use; And be 850k with interior upstream bandwidth theoretical maximum for 1.5 kilometers at copper cable for the ADSL2+ technology.MSE realizes three grades of up H-QoS strategies based on the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway, wherein, the CVLAN sign is applied to adsl link, promptly, CVLAN up link between RG and the DSLAM, and be that CVLAN1, CVLAN2 up link node are provided with threshold value of warning 500k by MSE; When MSE monitors this two sections CVLAN up links respectively, when wherein the uplink traffic of one section CVLAN up link surpasses 500k, begin to abandon the common network packet of going up on this section CVLAN up link, the business of networking terminal applies reduces the flow-control mechanism that TCP connects traffic volume at double, cause the significantly minimizing of access network up link online flow, it is congested to avoid the ADSL up link to take place in advance, thereby ensures the QoS of the uplink traffic of high-priority service such as voice.
In like manner, PVLAN is identified the PVLAN up link (being generally the FE up link) that is applied between DSLAM and the convergence switch, and be that PVLAN1 up link node is provided with threshold value of warning 60M by MSE, when the uplink traffic that monitors the PVLAN1 up link as MSE surpasses 60M, beginning evenly abandons by up all of this link aggregation and inserts user's last network packet, the business of networking terminal applies of all accesses reduces the flow-control mechanism that TCP connects traffic volume at double, cause the significantly minimizing of the access network up link online flow of this PVLAN sign, it is congested to avoid up link to take place in advance, thereby ensures the QoS of the uplink traffic of speech business.
Said process is equally applicable to MSE downlink physical port link.The downlink physical port-mark of multi-service access gateway is applied to multi-service access gateway physical port up link between convergence switch and the MSE, and be that MSE physical port 1 up link node is provided with threshold value of warning 600M by MSE, when the uplink traffic that monitors this section up link as MSE surpasses 600M, beginning evenly abandons by up all of this link aggregation and inserts user's last network packet, the business of networking terminal applies of all accesses reduces the flow-control mechanism that TCP connects traffic volume at double, cause the significantly minimizing of the up link online flow of this IAD physical port sign, it is congested to avoid up link to take place in advance, thereby ensures the QoS of the uplink traffic of speech business.
The domestic consumer who inserts with PON (Passive Optical Network) is an example, suppose to apply for simultaneously video communication and common business of networking, the uplink traffic of its video communication is relatively large, can adopt the identical collocation method of domestic consumer that inserts with ADSL, just MSE goes up the corresponding increase of threshold value of warning meeting that is provided with.Consider that the link bandwidth between RG and the ONU is FE, can not cause uplink congestion owing to uplink bandwidth resource is not enough, therefore, MSE for this reason the threshold value of warning that is provided with of the CVLAN3, CVLAN4 up link node of link correspondence can be the maximum FE of link bandwidth.
Fig. 6 is the structural representation of an embodiment of multi-service access gateway of the present invention.
As shown in Figure 6, the multi-service access gateway of this embodiment comprises early-warning judgment module 21, is used for judging respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes; Early warning processing module 22, be used under the situation of uplink traffic above the up link threshold value of warning of any one link nodes of any one link nodes that flows through a plurality of link nodes, reduce the flow of up low priority traffice, to guarantee the QoS of the up high-priority service flow of client.
Wherein, the entrained a plurality of signs of uplink traffic comprise the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway.
This embodiment is easy to carry out fast on existing network and disposes, and need not all network elements in the access network under the existing MSE are transformed, come the uplink traffic that congested a plurality of link nodes may take place of monitor client to the up link of multi-service access gateway by multi-service access gateway, when flowing through the uplink traffic that congested a plurality of link nodes may take place and surpass the up link threshold value of warning of each link nodes, reduce the flow of the low priority traffice that sends, guarantee the QoS of the up high-priority service flow of symmetric form business.
Fig. 7 is the structural representation of another embodiment of multi-service access gateway of the present invention.
As shown in Figure 7, compare with the embodiment among Fig. 6, the multi-service access gateway of this embodiment comprises that also access rate is provided with module 31, be used to the high-priority service of client that the threshold value of access rate is set, for example, for high-priority service such as speech business and video communication are provided with Committed Access Rate CAR, use too much bandwidth resources without application to prevent the user; Threshold value of warning is provided with module 32, is used to client to a plurality of link nodes on the up link of multi-service access gateway that CVLAN up link threshold value of warning, PVLAN up link threshold value of warning and multi-service access gateway physical port up link threshold value of warning are set respectively.
It is that each link nodes in the up link is provided with threshold value of warning that this embodiment is provided with module by threshold value of warning, can easily control the uplink traffic of low priority traffice, thereby can guarantee the QoS of up high-priority service flow.
Fig. 8 is the structural representation of the another embodiment of multi-service access gateway of the present invention.
As shown in Figure 8, compare with the embodiment among Fig. 7, the early-warning judgment module 41 of this embodiment comprises CVLAN up link early warning judging unit 411, is used for judging according to the CVLAN sign whether the uplink traffic that flows through the CVLAN link nodes surpasses CVLAN up link threshold value of warning; PVLAN up link early warning judging unit 412 is used for judging according to the PVLAN sign whether the uplink traffic that flows through the PVLAN link nodes surpasses PVLAN up link threshold value of warning; Physical port up link early warning judging unit 413 is used for judging according to the downlink physical port-mark of multi-service access gateway whether the uplink traffic that flows through the links of physical ports of same node surpasses multi-service access gateway physical port up link threshold value of warning.
This embodiment judges respectively by CVLAN up link early warning judging unit, PVLAN up link early warning judging unit and physical port up link early warning judging unit whether the uplink traffic at three link nodes places on the up link surpasses threshold value of warning separately, it is congested to avoid up link to take place in advance, to guarantee the QoS of up high-priority service flow.
Fig. 9 is the structural representation of an embodiment again of multi-service access gateway of the present invention.
As shown in Figure 9, compare with the embodiment among Fig. 8, the early warning processing module 51 of this embodiment comprises CVLAN early warning processing unit 511, be used for surpassing under the situation of CVLAN up link threshold value of warning, reduce the flow of the low priority traffice of client transmission in the uplink traffic that flows through the CVLAN link nodes; PVLAN early warning processing unit 512 is used for surpassing under the situation of PVLAN up link threshold value of warning in the uplink traffic that flows through the PVLAN link nodes, evenly reduces the flow of the low priority traffice of each client that flows through the PVLAN link nodes; Physical port early warning processing unit 513, be used for surpassing under the situation of multi-service access gateway physical port up link threshold value of warning, evenly reduce the flow of the low priority traffice of each client that flows through the links of physical ports of same node in the uplink traffic that flows through the links of physical ports of same node.
This embodiment carries out early warning at the judged result of CVLAN up link early warning judging unit, PVLAN up link early warning judging unit and physical port up link early warning judging unit respectively by CVLAN early warning processing unit, PVLAN early warning processing unit and physical port early warning processing unit to be handled, when surpassing separately threshold value of warning, guarantee the QoS of up high-priority service flow by the method that reduces the low priority traffice flow.
The foregoing description need not disposed up qos policy in access network, only need MSE is done the up service quality that less transformation just can be satisfied symmetric form business such as voice, video with lower cost, thereby quality of service provides essential condition with further raising user experience in order to improve end to end.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are conspicuous for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (11)
1. realize the method for up QoS it is characterized in that described method comprises based on the IP Access Network for one kind:
Multi-service access gateway judges respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of described multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of described client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes;
If the uplink traffic that flows through any one link nodes in described a plurality of link nodes surpasses the up link threshold value of warning of described any one link nodes, then reduce the flow of up low priority traffice, to guarantee the QoS of the up high-priority service flow of described client by described multi-service access gateway.
2. method according to claim 1 is characterized in that, the entrained a plurality of signs of described uplink traffic comprise the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway.
3. method according to claim 2 is characterized in that, described method also comprises:
Described multi-service access gateway is the threshold value that the high-priority service of described client is provided with access rate;
Described multi-service access gateway is that described client to a plurality of link nodes on the up link of described multi-service access gateway are provided with CVLAN up link threshold value of warning, PVLAN up link threshold value of warning and multi-service access gateway physical port up link threshold value of warning respectively.
4. method according to claim 3 is characterized in that, the step whether uplink traffic that each link nodes is flow through in described judgement surpasses the up link threshold value of warning of each link nodes comprises:
Judge according to described CVLAN sign whether the uplink traffic that flows through the CVLAN link nodes surpasses described CVLAN up link threshold value of warning;
Judge according to described PVLAN sign whether the uplink traffic that flows through the PVLAN link nodes surpasses described PVLAN up link threshold value of warning;
Judge according to the downlink physical port-mark of described multi-service access gateway whether the uplink traffic that flows through the links of physical ports of same node surpasses described multi-service access gateway physical port up link threshold value of warning.
5. method according to claim 4 is characterized in that, the step that is reduced the flow of up low priority traffice by described multi-service access gateway comprises:
Surpass under the situation of described CVLAN up link threshold value of warning in the uplink traffic that flows through described CVLAN link nodes, reduce the flow of the low priority traffice of described client transmission;
Surpass under the situation of described PVLAN up link threshold value of warning in the uplink traffic that flows through described PVLAN link nodes, evenly reduce the flow of the low priority traffice of each client that flows through described PVLAN link nodes;
Surpass under the situation of described multi-service access gateway physical port up link threshold value of warning in the uplink traffic that flows through described links of physical ports of same node, evenly reduce the flow of the low priority traffice of each client that flows through described links of physical ports of same node.
6. method according to claim 1 is characterized in that, after reducing the flow of up low priority traffice by described multi-service access gateway, described method also comprises:
It is overtime that described client judges that TCP that whether message that sends low priority traffice takes place connects timing response;
If it is overtime that the TCP connection timing response of described low priority traffice takes place, then described client reduces the flow of up low priority traffice by flow-control mechanism.
7. a multi-service access gateway is characterized in that, described multi-service access gateway comprises:
Early-warning judgment module is used for judging respectively according to the up link threshold value of warning of a plurality of link nodes of client to the up link of multi-service access gateway with from the entrained a plurality of signs of the uplink traffic of described client whether the uplink traffic that flows through each link nodes surpasses the up link threshold value of warning of each link nodes;
The early warning processing module, be used under the situation of uplink traffic above the up link threshold value of warning of described any one link nodes of any one link nodes that flows through described a plurality of link nodes, reduce the flow of up low priority traffice, to guarantee the QoS of the up high-priority service flow of described client.
8. multi-service access gateway according to claim 7 is characterized in that, the entrained a plurality of signs of described uplink traffic comprise the downlink physical port-mark of CVLAN sign, PVLAN sign and multi-service access gateway.
9. multi-service access gateway according to claim 8 is characterized in that, described multi-service access gateway also comprises:
Access rate is provided with module, is used to the high-priority service of described client that the threshold value of access rate is set;
Threshold value of warning is provided with module, is used to described client to a plurality of link nodes on the up link of described multi-service access gateway that CVLAN up link threshold value of warning, PVLAN up link threshold value of warning and multi-service access gateway physical port up link threshold value of warning are set respectively.
10. multi-service access gateway according to claim 9 is characterized in that, described early-warning judgment module comprises:
CVLAN up link early warning judging unit is used for judging according to described CVLAN sign whether the uplink traffic that flows through the CVLAN link nodes surpasses described CVLAN up link threshold value of warning;
PVLAN up link early warning judging unit is used for judging according to described PVLAN sign whether the uplink traffic that flows through the PVLAN link nodes surpasses described PVLAN up link threshold value of warning;
Physical port up link early warning judging unit is used for judging according to the downlink physical port-mark of described multi-service access gateway whether the uplink traffic that flows through the links of physical ports of same node surpasses described multi-service access gateway physical port up link threshold value of warning.
11. multi-service access gateway according to claim 10 is characterized in that, described early warning processing module comprises:
CVLAN early warning processing unit is used for surpassing under the situation of described CVLAN up link threshold value of warning in the uplink traffic that flows through described CVLAN link nodes, reduces the flow of the low priority traffice of described client transmission;
PVLAN early warning processing unit is used for surpassing under the situation of described PVLAN up link threshold value of warning in the uplink traffic that flows through described PVLAN link nodes, evenly reduces the flow of the low priority traffice of each client that flows through described PVLAN link nodes;
Physical port early warning processing unit, be used for surpassing under the situation of described multi-service access gateway physical port up link threshold value of warning, evenly reduce the flow of the low priority traffice of each client that flows through described links of physical ports of same node in the uplink traffic that flows through described links of physical ports of same node.
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