WO2007012224A1 - Système de contrôle de flux du réseau ip et son procédé - Google Patents

Système de contrôle de flux du réseau ip et son procédé Download PDF

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Publication number
WO2007012224A1
WO2007012224A1 PCT/CN2005/001141 CN2005001141W WO2007012224A1 WO 2007012224 A1 WO2007012224 A1 WO 2007012224A1 CN 2005001141 W CN2005001141 W CN 2005001141W WO 2007012224 A1 WO2007012224 A1 WO 2007012224A1
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WO
WIPO (PCT)
Prior art keywords
user
traffic
policy
flow control
record
Prior art date
Application number
PCT/CN2005/001141
Other languages
English (en)
French (fr)
Inventor
Chen Wu
Hongbiao Li
Xianmin Meng
Bin Li
Weidong Zhong
Jin Qi
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2005/001141 priority Critical patent/WO2007012224A1/zh
Publication of WO2007012224A1 publication Critical patent/WO2007012224A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/20Traffic policing

Definitions

  • IP network adaptive flow control device system and method
  • the present invention relates to a network traffic control device, system and method, and more particularly to an adaptive flow control device, system and method in a network based on IP technology. Background technique
  • IP Internet Protocol
  • the original goal of IP (Internet Protocol) technology is to realize resource sharing, collaborative work, and mutual benefit between users.
  • the starting point of its design is based on mutual trust and self-discipline between users.
  • the main technical features of IP are bandwidth statistics multiplexing and connectionless operation.
  • the network provides "best effort" delivery services.
  • the Internet based on IP technology uses the management domain as the decentralized management. Different management domains adopt different strategies and network structures, so that local network changes will not have much impact on the entire network.
  • IP technology is a network technology designed for data communication. Its design concept is different from that of traditional telecommunication technology, so there are still some problems to be solved.
  • QoS Quality of Service
  • Traditional IP services such as file downloading and mail delivery, do not have strict requirements on delay and delay jitter. They only require the intelligent capabilities of the terminal to ensure reliable transmission of data. No network is required to provide QoS guarantee.
  • Real-time services such as video and video are sensitive to delay and delay jitter.
  • Some traditional service terminals such as telephones) do not have the intelligence capability. This requires the network to provide strict guarantees such as packet loss rate, delay, and delay jitter.
  • IntServ/RSVP Integrated Service/Resource Reserve Protocol
  • DiffServ Differentiated Service
  • TE-based Traffic
  • Engineering) technology bandwidth reservation MPLS-TE/DS-TE
  • IP telecom service Since the IP telecom service is a paid communication service, there are a large number of insecure factors in the IP network. Security problems such as network attacks, worms and viruses occur from time to time on the IP network. They may generate a large amount of traffic and occupy a large amount of traffic. Network bandwidth, therefore, how to ensure that IP telecom services are not damaged by network security problems has become a major problem that IP networks urgently need to solve.
  • IP networks Currently, telecom operators face a relatively embarrassing situation for IP networks:
  • the IP area network (the IP network used for service aggregation and access) can control the uplink and downlink traffic of public Internet users, but it cannot limit the IP backbone network (the IP used to transmit traffic between IP area networks). Network) Traffic to the IP area network.
  • a malicious user or a non-malicious user can illegally or legally over-occupy the bandwidth resources of the IP area network.
  • a malicious user uses a network attack tool to enable the file server to continuously send a large amount of data to the network.
  • a large number of public Internet users use the "bandwidth killer" application. For example, BT (BitTorrent) downloads, causing local congestion of the network, which causes the IP network to provide the disappearance of light load conditions for IP telecom services.
  • the traffic model is complex, and the Internet traffic model is basically clear.
  • the IP network is optimized based on traffic planning. , IP telecommunications industry that guarantees shared IP networks
  • the bandwidth of the service can effectively suppress the excessive use of the internal link bandwidth of the IP network by the malicious or non-malicious users, ensure the fair rights of the normal Internet users, and alleviate the impact of the traffic attacks on the IP area network. solved problem. Summary of the invention
  • the technical problem to be solved by the present invention is to provide an IP network adaptive flow control device and method, an IP network adaptive flow control system and method, and manage user traffic, so that the traffic model with complex traffic model is basically clear. Assuring the bandwidth of the IP telephony service of the IP network can effectively suppress the excessive use of the internal link bandwidth of the IP network by the malicious or non-malicious users, ensuring the fair rights of the normal Internet users, and alleviating the traffic attacks on the IP area network. Impact.
  • the present invention provides an IP network adaptive flow control device, including a downlink flow control unit, for adjusting traffic of a user from an IP backbone network to an IP area network according to a user traffic control policy, where the downlink flow control unit includes:
  • An IP network interface configured to serially connect the downlink flow control device to the IP backbone network
  • the devices on the network at both ends are transparent;
  • a policy service interface for communicating with a user flow control policy service unit;
  • a policy management module for managing a user flow control policy library, including adding, modifying, and deleting operations;
  • a policy receiving module configured to receive, by using the policy service interface, a command from the user traffic policy service unit, and use the policy management module to add, modify, or delete a user traffic control policy in a user flow control policy database, and Update to the corresponding user traffic record
  • the policy search module is configured to find the best matching user traffic control policy in the user flow control policy database according to the user's destination IP address, and if not found, adopt the default policy
  • user traffic record management The module is configured to generate, find, modify, and age the user traffic record.
  • the flow control module is configured to control, according to the user traffic record, the traffic of the user from the IP backbone network to enter the IP area network.
  • the user traffic record management module generates a user traffic record for the user, searches for a user traffic record according to the destination IP address, and modifies a parameter of the corresponding user traffic record according to the change of the user flow control policy, if the user traffic record is set
  • the user traffic record is aged when there is no traffic for a given time period.
  • the present invention further provides an IP network adaptive flow control method using the above flow control device, which comprises performing user downlink flow control, that is, adjusting the traffic of the user from the IP backbone network into the IP area network according to the user flow control policy command.
  • the downlink traffic control of the user includes the following steps:
  • the user is configured to generate a user traffic record by using a default user downlink traffic control policy, and control the downlink traffic of the user from the IP backbone network to the IP area network;
  • the user's traffic control policy database is searched for the best matching user downlink traffic control policy according to the user's destination IP address. Adopt the default policy;
  • the present invention also provides an IP network adaptive flow control system for controlling user traffic entering an IP area network, including:
  • the user traffic policy service unit is configured to collect uplink and downlink traffic statistics of the IP area network link, and compare them with a preset threshold to determine a link that needs to be controlled by the flow, according to the pre-inputted routing information and settings.
  • the order of priority of the service is generated, and an uplink or downlink flow control policy command is generated and delivered;
  • the IP area network element is used to collect uplink and downlink traffic data on the link and connect Transmitting the data to the user policy service unit;
  • the uplink flow control unit is configured to control the uplink traffic of the user according to the user uplink traffic control policy (which may be delivered by the user traffic policy service unit or the local default policy);
  • the downstream flow control unit includes:
  • An IP network interface configured to connect the downlink traffic control unit between the IP backbone network and the IP area network, and transparent to the devices at both ends of the network;
  • a policy service interface configured to communicate with the user traffic policy service unit;
  • a policy management module configured to manage a user flow control policy library, including adding, modifying, and deleting operations;
  • a policy receiving module configured to receive, by using the policy service interface, a command from the user traffic policy service unit, and use the policy management module to add, modify, or delete a user traffic control policy in a user flow control policy database, and Update to the corresponding user traffic record
  • the policy search module is configured to find the best matching user traffic control policy in the user flow control policy database according to the user's destination IP address, and if not found, adopt the default policy
  • user traffic record management The module is configured to generate, find, modify, and age the user traffic record.
  • the flow control module is configured to control, according to the user traffic record, the traffic of the user from the IP backbone network to enter the IP area network.
  • the user traffic record management module generates a user traffic record for the user, searches for a user traffic record according to the destination IP address, and modifies a parameter of the corresponding user traffic record according to the change of the user flow control policy, if the user traffic record is set
  • the user traffic record is aged when there is no traffic for a given time period.
  • the present invention further provides an IP network adaptive flow control method for controlling the traffic of each user entering the IP area network, including the following steps:
  • the user uplink traffic control unit and the user downlink traffic control unit respectively generate default user uplink and downlink traffic control policies to generate user traffic records, and control user traffic of a certain service class;
  • the user traffic policy service unit collects uplink and downlink traffic statistics of the IP area network link, and compares the uplink and downlink traffic thresholds preset to the link respectively;
  • the user uplink flow control unit and the downlink flow control unit update their own user flow control policy library according to the policy command;
  • the user uplink traffic control unit and the downlink traffic control unit respectively search for matching user traffic records according to the source IP address and the destination IP address of the user, and update the parameters of the user traffic record when found;
  • the best matching algorithm is used to search for the user uplink and downlink traffic control policies according to the source IP address and the destination IP address of the user respectively, and the uplink and downlink traffic control policies are searched if not found. Default strategy;
  • the user uplink traffic control unit and the downlink traffic control unit respectively generate user traffic records according to the user uplink and downlink traffic control policies, and control user uplink and downlink traffic.
  • the present invention achieves the effects of improving the QoS of the telecommunication service of the IP area network and alleviating the impact of the traffic attack on the IP area network, which is simple and easy, saves investment, and ensures the large customer Internet users and the public Internet users. Fair equity, improved user satisfaction, reduced user complaint rates and wastage rates. BRIEF abstract
  • FIG. 1 is a schematic flowchart of a method for performing downlink traffic control by using an IP network adaptive flow control device according to the present invention
  • FIG. 2 is a schematic flowchart of an IP network adaptive flow control method according to the present invention
  • FIG. 3 is a schematic diagram of an adaptive traffic management system according to the present invention
  • FIG. 4 is a schematic diagram of user downlink flow control according to the present invention
  • FIG. 5 is a schematic diagram of user uplink flow control according to the present invention.
  • the present invention first provides an IP network adaptive flow control device, including a downstream flow control unit, the unit comprising:
  • An IP network interface configured to connect the downlink traffic control device between the IP backbone network and the IP area network, and transparent to the devices at both ends of the network;
  • a policy service interface for communicating with a user flow control policy service unit;
  • a policy management module for managing a user flow control policy library, including adding, modifying, and deleting operations;
  • a policy receiving module configured to receive, by using the policy service interface, a command from the user traffic policy service unit, and use the policy management module to add, modify, or delete a user traffic control policy in a user flow control policy database, and Update to the corresponding user traffic record
  • the policy search module is configured to find the best matching user traffic control policy in the user flow control policy database according to the user's destination IP address, and if not found, adopt the default policy
  • user traffic record management The module is configured to generate, find, modify, and age the user traffic record.
  • the flow control module is configured to control, according to the user traffic record, the traffic of the user from the IP backbone network to enter the IP area network.
  • the user traffic record management module generates a user traffic record for the user, searches for a user traffic record according to the destination IP address, and modifies a parameter of the corresponding user traffic record according to the change of the user flow control policy, if the user traffic record is set
  • the user traffic record is aged when there is no traffic for a given time period.
  • the differential traffic control unit may further comprise a traffic statistics module, configured to perform statistics on the traffic of each user entering and leaving the IP area network, and provide data to the charging system.
  • a traffic statistics module configured to perform statistics on the traffic of each user entering and leaving the IP area network, and provide data to the charging system.
  • the downlink flow control unit further includes a default policy saving module, configured to save a default downlink traffic control policy, when the device is started, or the user cannot be found in the user flow control policy database. This default policy is used when the flow control policy is used.
  • the downlink traffic control unit may also reserve a monitoring port to support legal supervision of port traffic.
  • a schematic flowchart of a method for performing downlink traffic control by using the foregoing device according to the present invention.
  • a default user downlink traffic control policy is applied to a user to generate a user traffic record, and the user is controlled from the IP backbone network.
  • the traffic of the IP area network step 101; after receiving the command of the user traffic policy service unit, adding a force port, modifying or deleting the user flow control policy in the user flow control policy database, and updating to the corresponding user traffic record ( step 101).
  • step 102 the user's destination IP address
  • step 103 the user's destination IP address
  • step 104 the user traffic control policy that best matches the user flow control policy database, and if not, adopt the default policy
  • step 106 the user generates a user traffic record
  • step 106 controlling, according to the user traffic record, traffic from the IP backbone network to the IP area network
  • the method further includes the following steps: Performing statistics on the traffic of each user entering and leaving the IP area network, and providing data to the charging system.
  • the present invention further provides an adaptive flow control system, which is composed of logical functional entities such as an IP area network element, a user uplink flow control unit, a user downlink flow control unit, and a user traffic policy service unit.
  • the IP area network element is a network device that is distributed in the access layer, the aggregation layer, and the core layer of the IP area network (some IP area networks do not necessarily have so many layers, if some IP area networks do not have an aggregation layer), Such as routers.
  • the user uplink flow control unit is a functional entity applied to the IP area network access layer device.
  • the user uplink flow control unit can utilize the existing functions of the BRAS device to implement Based on the user's control of its upstream traffic; for the access layer SR (Service Router), the user's upstream traffic control unit uses the existing CAR (Committed Access Rate) function of the router device to limit the access rate of each user based on the source IP address.
  • the user downlink traffic control unit is a separate device provided according to the present invention, which is connected in series between the IP area network and the IP backbone network carrying the Internet service, and can be shared by several links. Complex functions such as routing and multicasting do not change the routing configuration of the network and are transparent to the devices at both ends of the link.
  • the user traffic policy service unit may be a hypervisor or server integrated with the network management system.
  • the main function of the network element of the IP area network is to periodically report the uplink and downlink traffic statistics of the link to the user traffic policy service unit.
  • the user uplink flow control unit is a functional entity on it.
  • the main functions of the user uplink traffic control unit are: receiving a command sent by the user traffic policy service unit, adding, modifying, and deleting an uplink traffic control policy in the traffic control policy database, and querying the user traffic record according to the source IP address of the user. If it is found, the parameters of the user record are updated. If the parameter is not found, the best matching algorithm is used, and the uplink user flow control policy is searched in the flow control policy database according to the source IP address of the user, and the default policy is not found.
  • the user traffic control policy generates user traffic records, controls the traffic of each user entering the IP area network, and can age these user traffic records.
  • the main functions of the user downlink traffic control unit are: receiving a command sent by the user traffic policy service unit, adding, modifying, and deleting a downlink traffic control policy in the traffic control policy database, and querying the user traffic record according to the user's destination IP address. If it is found, the parameters of the user record are updated. If the parameter is not found, the best matching algorithm is adopted, and the downlink user flow control policy is searched in the flow control policy database according to the destination IP address of the user, and the default policy is not found, based on
  • the user traffic control policy generates user traffic records, controls the traffic of each user from the IP backbone network to the IP area network, and can age these user traffic records. Statistics on the traffic of each user entering and leaving the IP area network can be sent to the charging system. Provide data to realize differentiated tariffs for internal and external traffic on the user's IP area network; legal monitoring ports can be reserved to support legal monitoring by the national security department.
  • the main function of the user traffic policy service unit is to periodically collect IP area network links.
  • the uplink and downlink traffic conditions are respectively compared with the preset uplink and downlink traffic thresholds for each link, and the links above or below the preset threshold are summarized to determine the link requiring traffic adjustment, according to the pre-input
  • the routing information and the set service priority order information are generated, and the traffic control policy command is generated and sent to the user uplink traffic control unit or the user downlink traffic control unit.
  • the traffic control policy of each service class based on the IP subnet is saved, and the user traffic control policy is delivered to the user uplink traffic control unit or the user downlink traffic control unit according to a certain service class priority order. Save network routing information to determine the IP subnet associated with each link.
  • the interface between the IP area network element and the user traffic policy service unit is an SNMP or COPS protocol, and the interface between the user uplink flow control unit and the user downlink traffic control unit and the user traffic policy service unit may be COPS. Protocol, you can also use the CLI (Command Line Interface) method.
  • CLI Common Line Interface
  • the adaptive flow control method of the present invention is to dynamically control the uplink and downlink traffic of the IP area network of each user of the service class with lower QoS requirements of the IP area network, so that the data service required by the lower QoS is especially the public Internet service.
  • the traffic model is clear, and the overall traffic planning improves the QoS of IP telecom services in the IP regional network.
  • the public online business is characterized by randomness and suddenness, and its traffic model is uncertain.
  • the user uplink traffic control unit and the user downlink controller respectively limit the traffic of each user entering the IP area network by using different IP address spaces for different service classes and the uplink and downlink traffic control policies based on the user and the IP address.
  • the adaptive flow control method of the present invention includes two aspects of user uplink traffic control at the IP area network access layer and user downlink flow control at the IP area network and the IP backbone network interface.
  • the user first Initially, the default user uplink and downlink traffic control policies are used to generate user traffic records to control user traffic of a certain service class (step 201); the user traffic policy service unit collects uplink and downlink traffic statistics of the IP regional network link, and Comparing with the uplink and downlink traffic thresholds preset for the link respectively (step 202); determining, according to the comparison result, a link requiring flow control (step 203); according to the determined link, and pre-inputting The routing information and the service priority order are generated, and the user uplink and downlink traffic control policy commands are generated and sent to the user uplink traffic control unit and the downlink traffic control unit.
  • the user uplink flow control unit and the user downlink flow control unit update the user flow control policy library according to the policy command (step 205); the user in the user uplink flow control unit and the user downlink flow control unit respectively according to the source IP address and The destination IP address is searched for the matching user traffic record, and the parameter of the user traffic record is updated (step 206); if no matching user traffic record is found, the user's IP address is in the respective user flow control policy database.
  • the best matching algorithm is used to find the user uplink and downlink traffic control policies, and if not found, the default policy is adopted (step 207); the user uplink traffic control unit and the downlink traffic control unit respectively generate users according to the user uplink and downlink traffic control policies.
  • the traffic record controls the upstream and downstream traffic of the user (step 208).
  • FIG. 3 it is a schematic diagram of an adaptive flow control system according to the present invention.
  • the IP area network element (that is, all devices in the network), the BRAS and the SR, and the IP area network access layer device, the user uplink flow control unit 302, the user downlink flow control unit 303, and the user traffic policy service unit 304.
  • the IP area network element may be a network device of the current IP area network, such as a router, supporting an SNMP (Simple Network Management Protocol) agent and a MIB (Management Information Base) related to link load conditions, or supporting COPS (Common Open Policy Service). Protocol and PIB (Policy Information Base) on link load conditions.
  • SNMP Simple Network Management Protocol
  • MIB Management Information Base
  • COPS Common Open Policy Service
  • Protocol and PIB Policy Information Base
  • the user uplink traffic control unit 302 may be a functional entity implemented on an existing IP area network access layer device, and the BRAS device of the IP area network access layer already has a function of supporting uplink and downlink traffic restrictions for each user.
  • the existing CAR function on the SR can support the flow control based on the source IP address.
  • the user uplink flow control unit can separately modify these functions to provide an interface with the user traffic policy service unit, which can adopt the COPS protocol.
  • the upstream traffic control unit is a PEP (Policy Execution Point) of the COPS, and is configured to receive a command for adding, modifying, and deleting an upstream traffic control policy delivered by the user traffic policy service unit, or automatically send and add by using a CLI or other interface.
  • PEP Policy Execution Point
  • the user upstream flow control unit adds the flow control policy library according to the command. Force, modify, and delete the traffic control policy. Query the user traffic record based on the source IP address of the user. If it is found, update the parameters of the user record. If not, the best matching algorithm is used. According to the source IP address of the user.
  • the user traffic control policy is searched in the flow control policy database, and the default policy is not found.
  • the traffic control policy is used to generate user traffic records for the user, and the traffic of each user entering the IP area network is controlled, and there is no time in the set time period.
  • the user's user traffic record is aged when traffic is flowing. No changes are made to the original function search algorithm, rate limiting algorithm, and the like.
  • the user upstream traffic control unit can save the default upstream traffic control policy, which is used when the device is started or the user traffic control policy is not found in the user traffic control policy library.
  • the user downlink traffic control unit 303 is a separate device provided according to the present invention, and can be connected in series between the IP area network and the IP backbone network carrying the Internet service, and can be shared by several links without routing or grouping. Complex functions such as broadcast do not change the routing configuration of the network, and are transparent to the devices at both ends of the link.
  • the traffic entering and leaving the device does not pass through the switching network, and line rate processing is implemented by a network processor on one interface board.
  • Supports port types such as FEI, GEI, 10GE, STM-1 POS, STM-4 POS, and STM-16 POS STM-64 POS. In the event of a power failure or malfunction, the optical path can be passed through.
  • the user traffic policy service unit which can adopt the COPS protocol, so that the user downlink traffic control unit is a PEP of the COPS, and is configured to receive a command for adding, modifying, and deleting a downlink traffic control policy delivered by the user traffic policy service unit.
  • the user downlink traffic control unit adds, modifies, and deletes the traffic control policy in the flow control policy database according to the command, and queries the user traffic record according to the destination IP address of the user, and if found, updates the parameter of the user record, if it is not found Then, the best matching algorithm is adopted, and the user traffic control policy is searched in the flow control policy database according to the user's destination IP address, and the default policy is not found, and the user traffic record is generated for the user based on the traffic control policy, and each user is controlled from the IP.
  • the backbone network enters the traffic of the IP area network, and ages the user's user traffic record when there is no traffic within the set time period.
  • the traffic control policy lookup can refer to the existing routing table lookup algorithm.
  • the rate limit can use the same algorithm as the existing CAR function.
  • the user downlink traffic control unit can save the default downstream traffic control policy when the device is started, or These policies are used when the user flow control policy is not found in the User Flow Control Policy Library.
  • the traffic of each user to and from the IP area network can be counted to provide data to the billing system, and the differentiated tariffs of the internal and external traffic of the user IP area network can be realized.
  • You can reserve a legal monitoring port to support the legal supervision of the national security department.
  • the main functions include: Supporting port mirroring. You can copy one port or a few ports and output it from a monitoring port. Support is based on a 5-tuple.
  • Traffic mirroring can copy session traffic of a port or ports and output it from a monitoring port to monitor a session.
  • Traffic Supports an ACL (Access Control List) to deny traffic from a session into the IP area network; support for a certain length range to implement a drop policy with a certain probability, and so on.
  • ACL Access Control List
  • the user traffic policy service unit 304 may be a management program or server integrated with the network management system, and is also the "heart" of the adaptive flow control system of the present invention, and its interface with the IP area network element 301 may be
  • the SNMP or COPS protocol collects and stores the link bandwidth usage information of the IP area network element through the interface.
  • the user traffic policy service unit 304 and the user uplink traffic control unit 302 and the user downlink traffic control unit 303 can both use the COPS protocol to deliver, update, or delete the user uplink traffic control unit and the user downlink traffic control unit through the interface.
  • User traffic control policy commands can also be used
  • the CLI or other interface automatically sends commands to the user upstream traffic control unit and the user downlink traffic control unit to add, update, or delete user traffic control policies.
  • the user traffic control policy allocates different IP address pools based on different service users.
  • the user traffic control policy defines the traffic adjustment policy for each user of each type of service to enter the IP area network based on the IP subnet.
  • the user traffic control policy can be composed of IP subnets and IP sub-networks.
  • a network traffic control template is formed.
  • the IP subnet represents the IP subnet to which the user belongs.
  • the IP subnet flow control template defines the traffic control policy for each user of the service class corresponding to the IP subnet, including the service type and the maximum peak value. Bandwidth, minimum peak bandwidth, and adjustment step size (which can be percentage or bandwidth).
  • the service type defines the service class that needs traffic adjustment, such as silver customers, bronze customers, large customers online, public Internet access, etc.
  • Business class each business class has a priority definition. When determining the flow control strategy, adjust downwards according to the priority. The order of the first level from low to high is adjusted upwards in order of priority from high to low.
  • the user traffic policy service unit shall store the uplink and downlink thresholds for each link, as well as the routing information for each node, which may be manually entered into the user traffic policy service unit.
  • the IP subnet associated with these TopN links is found based on the routing information, and the traffic control policy for each user in the relevant IP subnet is determined and generated, and sent to the corresponding traffic controller according to the flow control direction.
  • the flow control method of the present invention includes two aspects of user uplink traffic control in the IP area network access layer and user downlink traffic control at the IP area network and the IP backbone network interface, as shown in FIG. 4, in the IP area network.
  • the user traffic policy service unit stores the uplink and downlink thresholds of each link in the downlink direction, and the routing information of the IP area network, and finds the link whose downlink traffic is lower than the upper threshold and the lower threshold, and determines the most needed adjustment.
  • the TopN link identifies the IP subnet associated with the TopN links from the routing information, determines and generates a traffic control policy for increasing or down-regulating the downlink traffic of each user in the IP subnet, and uses the COPS protocol, the automatic CLI, or Other interface modes are distributed to the user downstream flow control unit. When determining the downlink traffic control policy based on the IP subnet, conflicts may occur.
  • the user traffic policy service unit should choose to downgrade the traffic control policy.
  • the user downlink traffic control unit supports the COPS protocol, the automatic CLI mode, or other interfaces, and receives the downlink traffic control policy command.
  • the user downlink traffic control unit adds, modifies, and deletes the traffic control policy according to the command according to the command, according to the user.
  • Destination IP Address query user traffic record, if it is found, update the user record parameters. If it is not found, use the best matching algorithm to find the user downlink traffic control policy in the flow control policy database according to the user's destination IP address.
  • the user does not use the default policy to generate user traffic records for the user based on the downlink traffic control policy, thereby controlling the downlink traffic sent by each user of a certain type of service to the IP area network.
  • the user downlink traffic control unit can age these user traffic records. When a user has no traffic within a set time period, the user traffic record of the user can be deleted.
  • FIG. 5 it is a schematic diagram of a method for controlling user uplink traffic in an IP area network access layer according to the present invention.
  • a user uplink traffic control unit When a user uplink traffic control unit is started, user uplink is used for each user traffic of certain service classes. The default policy in the flow control unit. Then, the user traffic policy service unit collects and saves the bandwidth usage information of the uplink link of the IP area through the SNMP or COPS protocol. The user traffic policy service unit stores the uplink and downlink thresholds of each link in the uplink direction, and the routing information of the IP area network, and finds the link whose uplink traffic is lower than the upper threshold and the lower threshold, and determines the most needed adjustment.
  • TopN (top N) links find the IP subnets associated with these TopN links from the routing information, determine and generate traffic control policies for uplink traffic to be adjusted or down-regulated for each user in the IP subnet, and use the COPS protocol.
  • the automatic CLI or other interface mode is distributed to the user upstream flow control unit.
  • conflicts may occur. For example, according to the bandwidth usage of a link, it is required to adjust the uplink traffic of each user on an IP subnet and the bandwidth usage according to another link. In this case, it is required to downgrade the uplink traffic of each user to the same IP subnet. At this time, the user traffic policy service unit should choose to downgrade the traffic control policy. '
  • the user uplink traffic control unit supports the COPS protocol, the automatic CLI mode, or other interfaces, and receives the command of the uplink traffic control policy, and the user uplink traffic control unit adds, modifies, and deletes the traffic control policy according to the command according to the command, according to the user.
  • the user downlink traffic control unit can age these user traffic records. When a user has no traffic within a set time period, the user traffic record of the user can be deleted.
  • the present invention can be applied to a telecommunication carrier network that uses traditional IP technology to transmit Internet traffic. It may include two situations.
  • the first case is:
  • the IP area network adopts a physical network, carries NGN/SS VoIP, 3G, and large customers.
  • Internet, ordinary Internet access and other services the IP backbone network uses two networks: one network transmits public network traffic and other traffic model uncertain services, and one network transmits NGN/SS VoIP and other traffic models with clear or basic traffic.
  • the IP area network and the IP backbone network use a single physical network to carry NGN/SS VoIP, 3G, large customer Internet access, and ordinary Internet access. Of course, it is also suitable for similar non-telecom operator networks.
  • the user downlink traffic control unit proposed by the present invention controls the downlink traffic of the user at the interface between the IP area network and the IP backbone network, and controls the uplink traffic of each public Internet user by controlling the uplink traffic of the access layer device.
  • Traffic so that the traffic model of the public Internet users is basically clear.
  • traffic policy service unit traffic of each user in certain service classes can be dynamically adjusted to and from the IP area network according to the load of the network link. In this way, on the one hand, traffic planning can be used to optimize the bandwidth allocation of the IP area network to achieve bandwidth guarantee for the IP telecom service.
  • the traffic of each user that restricts the public Internet service is relieved to some extent. The impact on the IP area network ensures the fair rights of Internet users of large customers and Internet users.

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Description

IP网络自适应流量控制设备、 系统及方法 技术领域
本发明涉及一种网络流量控制设备、 系统及方法, 尤其涉及一种在基 于 IP技术的网络中的自适应流量控制设备、 系统及方法。 背景技术
IP (Internet Protocol) 技术的最初目标是实现用户之间的资源共享、 协同工作、 互惠互利, 其设计的出发点是基于用户之间互信、 自律。 IP的 主要技术特点是带宽统计复用、 无连接工作方式, 网络提供 "尽力而为" 的传送服务。 基于 IP技术的 Internet为了提高网络扩展性, 以管理域为单 位分散管理, 不同管理域采用不同的策略和网络结构, 这样局部网络变化 不会对整个网络带来太大的影响。 IP的这些技术特点造就了 Internet的巨 大成功。
通信界一直追求 "三网合一" (计算机网、 电信网、 广电网使用一个 物理网络) 的理想, Internet的巨大成功使业界探索利用基于 IP技术的网 络承载多种业务的可能性, 目前大量的试验证明,在 IP网络承载电信业务 是基本可行的。但毕竟 IP技术是为数据通信设计的网络技术,其设计理念 与传统电信技术的设计理念不同, 所以仍然存在一些问题需要解决。
QoS (Quality of Service, 服务质量)是其中的主要问题之一。传统 IP 业务, 如文件下载、 邮件传递等数据业务, 对时延、 时延抖动等没有严格 的要求, 只要求通过终端的智能能力保证其数据的可靠传送, 不需要网络 提供 QoS保证, 而语音、视频等实时性业务, 对时延和时延抖动敏感, 有 些传统业务终端 (如电话) 不具备智能能力, 这就要求网络提供丢包率、 时延、 时延抖动等方面的严格保证, 这些主要因素造成了 IP技术的 QoS 问题。
目前虽然有 IntServ/RSVP ( Integrated Service/Resource Reserve Protocol)模型、 DiffServ (Differentiated Service)模型、 基于 TE (Traffic Engineering)技术的带宽预留(MPLS-TE/DS-TE)等解决方案, 但这些解 决方案,有的因扩展性问题而不能在一个大型的 IP网络上使用,有的不能 实现绝对的端到端 QoS保证,有的采用复杂的技术,其实施效果和技术成 熟度有待进一步验证。
由于 IP电信业务是一种有偿的通信业务, 但目前 IP网络存在着大量 的不安全因素, 网络攻击、 蠕虫和病毒等安全问题不时在 IP网络上发生, 它们可能产生大量的流量, 占用大量的网络带宽, 因此, 如何保证 IP电信 业务不受网络安全问题的破坏, 已经成为 IP 网络急需解决的主要问题之 目前, 电信运营商对于 IP 网络面临着比较尴尬的情况: 一方面, 在
IP区域网 (用于业务汇聚和接入的 IP网络) 边缘, 可以控制公众上网用 户的上行和下行流量, 但目前还无法限制从 IP骨干网 (用于传送 IP区域 网之间业务流量的 IP网络) 到 IP区域网的流量。 恶意用户或非恶意用户 可以非法或合法地过度占用 IP区域网的带宽资源,如恶意用户利用网络攻 击工具, 使文件服务器不断向网络发送大量数据; 大量公众上网用户使用 "带宽杀手"的应用, 如 BT (BitTorrent) 下载, 造成网络的局部拥塞, 这样造成 IP网络提供 IP电信业务的轻载条件的消失。 同时, 对用户不能 体现公平原则, 很多时候用户获得的是 "一刀切"服务, 大客户上网用户 虽然付出的费用高, 但并不能保证其获得较大的下行带宽。 另一方面, 电 信运营商想利用 DiffServ模型结合网络轻载状态在 IP区域网上保证 IP电 信业务的 QoS, 但目前 IP区域网的许多设备不支持 DiffServ的相关功能, 如队列调度、 拥塞避免等, 或者虽具有相关功能, 启动后却造成设备转发 性能严重下降,对 IP区域网进行改造,替换的这些设备, 需要大量的设备 投资, 也无法继续利用替换掉的设备。
因此,如何在基于 IP技术的网络中,对低优先级业务,特别是公众上 网业务的每个用户流量进行管理, 既实现流量模型复杂的上网业务流量模 型基本清晰, 以基于流量规划优化 IP网络, 保证共用 IP网络的 IP电信业 务的带宽,又可以有效抑制恶意用户或非恶意用户对 IP网络内部链路带宽 的过度占用,保证正常上网用户的公平权益,并缓解流量攻击对 IP区域网 带来的影响, 已经成为业界亟待解决的问题。 发明内容
本发明所要解决的技术问题在于提供一种 IP 网络自适应流量控制设 备及方法、 IP网络自适应流量控制系统及方法, 对用户流量进行管理, 既 实现流量模型复杂的上网业务流量模型基本清晰, 保证共用 IP网络的 IP 电信业务的带宽,又可以有效抑制恶意用户或非恶意用户对 IP网络内部链 路带宽的过度占用, 保证正常上网用户的公平权益, 并缓解流量攻击对 IP 区域网带来的影响。
本发明提供一种 IP 网络自适应流量控制设备, 包括下行流量控制单 元, 用以根据用户流量控制策略对用户从 IP骨干网进入 IP区域网的流量 进行调节, 该下行流量控制单元包括:
IP网络接口, 用于将所述下行流量控制设备串接于所述 IP骨干网与
IP区域网之间, 对两端网络的设备是透明的;
策略服务接口, 用于与用户流量控制策略服务单元进行通信; 策略管理模块, 用于对用户流量控制策略库进行管理, 包括添加、 修 改和删除操作;
策略接收模块, 用于通过所述策略服务接口, 接收来自所述用户流量 策略服务单元的命令, 利用所述的策略管理模块在用户流量控制策略库中 添加、 修改或删除用户流量控制策略, 并更新到相应的用户流量记录; 策略査找模块,用于根据用户的目的 IP地址,在用户流量控制策略库 査找最佳匹配的用户流量控制策略, 如果没有查找到, 采用默认策略; 用户流量记录管理模块,用于产生、查找、修改和老化用户流量记录; 流量控制模块, 用于根据所述用户流量记录, 控制所述用户从所述 IP 骨干网进入所述 IP区域网的流量。 所述的用户流量记录管理模块, 为所述用户产生用户流量记录, 根据 目的 IP地址査找用户流量记录,根据用户流量控制策略的改变,修改相应 的用户流量记录的参数, 如果用户流量记录在设定的时间周期内没有流量 时, 老化该用户流量记录。
本发明进而提供一种应用上述流量控制设备的 IP 网络自适应流量控 制方法, 该方法包括进行用户下行流量控制, 即根据用户流量控制策略命 令对用户从 IP骨干网进入 IP区域网的流量进行调节, 所述用户下行流量 控制包括如下步骤:
开始时对用户运用默认的用户下行流量控制策略产生用户流量记录, 控制用户的从 IP骨干网到 IP区域网的下行流量;
当接收到用户流量策略服务单元的命令后, 在用户流量控制策略库中 添加、 修改或删除用户流量控制策略, 更新到相应的用户流量记录中; 根据用户的目的 IP地址,査找匹配的用户流量记录,如果查到则更新 用户流量记录的参数;
如果没有查到与用户的目的 IP地址匹配的用户流量记录,则根据用户 的目的 IP地址,在用户流量控制策略库中查找与之最佳匹配的用户下行流 量控制策略, 如果仍査找不到则采用默认策略;
根据所述用户下行流量控制策略, 为该用户产生用户流量记录; 及 根据所述用户流量记录, 控制用户的从所述 IP骨干网进入所述 IP区 域网的下行流量。
本发明还提供一种 IP网络自适应流量控制系统, 对进入 IP区域网的 用户流量进行控制, 包括:
用户流量策略服务单元,用于收集 IP区域网链路的上行与下行流量统 计数据, 分别与预先设定的阈值进行比较, 以确定需要进行流量控制的链 路, 根据预先输入的路由信息和设定的业务优先级顺序, 产生并下发上行 或下行流量控制策略命令;
IP区域网网元, 用于统计其链路上的上行与下行流量数据, 并通过接 口向所述用户策略服务单元上报所述数据;
上行流量控制单元, 用于根据用户上行流量控制策略(可以由用户流 量策略服务单元下发, 或者是本地的默认策略) , 对用户的上行流量进行 控制;
下行流量控制单元, 包括:
IP网络接口, 用于将所述下行流量控制单元串接于所述 IP骨干网与 IP区域网之间, 对两端网络的设备是透明的;
策略服务接口, 用于与所述用户流量策略服务单元进行通信; 策略管理模块, 用于对用户流量控制策略库进行管理, 包括添加、 修 改和删除操作;
策略接收模块, 用于通过所述策略服务接口, 接收来自所述用户流量 策略服务单元的命令, 利用所述的策略管理模块在用户流量控制策略库中 添加、 修改或删除用户流量控制策略, 并更新到相应的用户流量记录; 策略査找模块,用于根据用户的目的 IP地址,在用户流量控制策略库 查找最佳匹配的用户流量控制策略, 如果没有査找到, 采用默认策略; 用户流量记录管理模块,用于产生、查找、修改和老化用户流量记录; 流量控制模块, 用于根据所述用户流量记录, 控制所述用户从所述 IP 骨干网进入所述 IP区域网的流量。
所述的用户流量记录管理模块, 为所述用户产生用户流量记录, 根据 目的 IP地址査找用户流量记录,根据用户流量控制策略的改变,修改相应 的用户流量记录的参数, 如果用户流量记录在设定的时间周期内没有流量 时, 老化该用户流量记录。
本发明进而提供一种 IP网络自适应流量控制方法,对每个用户的进入 IP区域网流量进行控制, 包括如下步骤:
用户开始时在用户上行流量控制单元和用户下行流量控制单元分别 采用默认的用户上行和下行流量控制策略产生用户流量记录, 控制某种业 务类的用户流量; 用户流量策略服务单元收集 IP 区域网链路的上行和下行流量统计数 据, 并分别与对该链路预先设定的上行和下行流量阈值进行比较;
根据比较结果确定需要进行流量控制的链路;
根据所述确定的链路, 以及预先输入的路由信息和设定的业务优先级 顺序, 生成并分别向用户上行流量控制单元和下行流量控制单元下发用户 流量控制命令;
用户上行流量控制单元和下行流量控制单元根据所述策略命令, 更新 自己的用户流量控制策略库;
用户上行流量控制单元和下行流量控制单元分别根据用户的源 IP地 址和目的 IP地址,查找匹配的用户流量记录,査到则更新用户流量记录的 参数;
如果没有査到匹配的用户流量记录,则分别根据用户的源 IP地址和目 标 IP地址在各自的用户流量控制策略库中采用最佳匹配算法查找用户上 行和下行流量控制策略, 没有查到则采用默认策略; 及
用户上行流量控制单元和下行流量控制单元分别根据所述用户上行 和下行流量控制策略, 产生用户流量记录, 控制用户的上行和下行流量。
与现有技术相比,本发明达到了改善 IP区域网电信业务的 QoS、缓解 流量攻击对 IP区域网的影响的效果, 简单易行, 节省了投资, 保证了大客 户上网用户和公众上网用户的公平权益, 提高了用户满意度, 降低了用户 投诉率和流失率。 附图概述
图 1为应用本发明所述的 IP网络自适应流量控制设备进行下行流量控 制的方法流程示意图;
图 2为本发明所述的 IP网络自适应流量控制方法流程示意图; 图 3为本发明所述的自适应流量管理系统原理图;
图 4为本发明所述的用户下行流量控制原理图; 图 5为本发明所述的用户上行流量控制原理图。 本发明的最佳实施方式
本发明首先提供一种 IP网络自适应流量控制设备,包括下行流量控制 单元, 该单元包括:
IP网络接口, 用于将所述下行流量控制设备串接于所述 IP骨干网与 IP区域网之间, 对两端网络的设备是透明的;
策略服务接口, 用于与用户流量控制策略服务单元进行通信; 策略管理模块, 用于对用户流量控制策略库进行管理, 包括添加、 修 改和删除操作;
策略接收模块, 用于通过所述策略服务接口, 接收来自所述用户流量 策略服务单元的命令, 利用所述的策略管理模块在用户流量控制策略库中 添加、 修改或删除用户流量控制策略, 并更新到相应的用户流量记录; 策略査找模块,用于根据用户的目的 IP地址,在用户流量控制策略库 査找最佳匹配的用户流量控制策略, 如果没有查找到, 采用默认策略; 用户流量记录管理模块,用于产生、查找、修改和老化用户流量记录; 流量控制模块, 用于根据所述用户流量记录, 控制所述用户从所述 IP 骨干网进入所述 IP区域网的流量。
所述的用户流量记录管理模块, 为所述用户产生用户流量记录, 根据 目的 IP地址查找用户流量记录,根据用户流量控制策略的改变,修改相应 的用户流量记录的参数, 如果用户流量记录在设定的时间周期内没有流量 时, 老化该用户流量记录。
为了便于流量统计, 提供差异化资费, 所述下行流量控制单元还可以 包括流量统计模块,用于对每个用户出入 IP区域网的流量进行统计, 向计 费系统提供数据。
所述下行流量控制单元还包括默认策略保存模块, 用于保存默认的下 行流量控制策略, 当设备启动, 或者在用户流量控制策略库中找不到用户 流量控制策略时使用该默认策略。
为了支持合法监管, 所述下行流量控制单元还可以预留监控端口, 用 于支持对端口流量的合法监管。
如图 1所示, 为本发明所述的应用上述设备进行下行流量控制的方法 流程示意图, 首先, 开始时对用户运用默认的用户下行流量控制策略产生 用户流量记录, 控制用户从 IP骨干网到 IP区域网的流量 (步骤 101 ) ; 当接收到用户流量策略服务单元的命令后, 在用户流量控制策略库中添 力口、 修改或删除用户流量控制策略, 更新到相应的用户流量记录中 (步骤
102) ; 根据用户的目的 IP地址, 查找匹配的用户流量记录, 如果査到, 则更新用户流量记录的参数 (步骤 103 ) ; 如果没有查到与用户的目的 IP 地址匹配的用户流量记录,则根据用户的目的 IP地址,在用户流量控制策 略库中査找与之最佳匹配的用户流量控制策略, 如果査不到则采用默认策 略 (步骤 104) ; 然后, 根据所述用户流量控制策略, 为该用户产生用户 流量记录(步骤 105) ; 根据所述用户流量记录, 控制用户从所述 IP骨干 网进入所述 IP区域网的流量 (步骤 106) 。
为了便于流量统计, 提供差异化资费, 还包括如下步骤: 对每个用户 出入 IP区域网的流量进行统计, 向计费系统提供数据。
还包括如下步骤: 保存默认的下行流量控制策略, 当设备启动, 或者 在用户流量控制策略库中找不到用户流量控制策略时使用该默认策略。
本发明进而还提供一种自适应流量控制系统, 由 IP区域网网元、用户 上行流量控制单元、用户下行流量控制单元和用户流量策略服务单元等逻 辑功能实体组成。 所述 IP区域网网元是分布在 IP区域网的接入层、 汇聚 层和核心层的网络设备(有的 IP区域网不一定有这么多层次, 如有的 IP 区域网没有汇聚层) , 如路由器等。 所述用户上行流量控制单元是应用在 IP区域网接入层设备的功能实体,对于接入层的 BRAS (Broadband Remote Access Server) 设备, 用户上行流量控制单元可以利用 BRAS设备现有的 功能, 实现基于用户对其上行流量进行控制; 对于接入层的 SR (Service Router),用户上行流量控制单元利用路由器设备现有的 CAR ( Committed Access Rate )功能, 即可实现基于源 IP地址对每个用户的接入速率进行限 制。 所述用户下行流量控制单元是根据本发明所提供的一台独立的设备, 串接在 IP区域网与承载 Internet业务的 IP骨干网之间的链路上,可以几条 链路共用, 不需要路由、 组播等复杂的功能, 不改变网络的路由配置, 对 链路两端的设备是透明的。 所述用户流量策略服务单元可以是一种与网络 管理系统集成在一起的管理程序或服务器。
所述 IP区域网网元的主要功能是:周期性地向用户流量策略服务单元 上报其链路的上行和下行流量统计数据。对于 IP区域网接入层设备,用户 上行流量控制单元是其上的一种功能实体。
所述用户上行流量控制单元的主要功能是: 接收用户流量策略服务单 元下发的命令,在流量控制策略库中添加、修改和删除上行流量控制策略, 根据用户的源 IP地址,查询用户流量记录,如果查到则更新用户记录的参 数,如果査不到, 则采用最佳匹配算法,根据用户的源 IP地址在流量控制 策略库中査找上行用户流量控制策略, 查找不到采用默认策略, 基于用户 流量控制策略产生用户流量记录,控制每个用户进入 IP区域网的流量,并 能够老化这些用户流量记录。
所述用户下行流量控制单元的主要功能是: 接收用户流量策略服务单 元下发的命令,在流量控制策略库中添加、修改和删除下行流量控制策略, 根据用户的目的 IP地址,查询用户流量记录,如果查到则更新用户记录的 参数, 如果查不到,则采用最佳匹配算法,根据用户的目的 IP地址在流量 控制策略库中查找下行用户流量控制策略, 査找不到采用默认策略, 基于 用户流量控制策略产生用户流量记录, 控制每个用户从 IP骨干网进入 IP 区域网的流量,并能够老化这些用户流量记录;对每个用户出入 IP区域网 的流量进行统计,可以向计费系统提供数据,实现用户 IP区域网内外流量 的差异化资费; 可以预留合法监控端口, 支持国家安全部门的合法监控。
所述用户流量策略服务单元的主要功能是:周期性收集 IP区域网链路 的上行和下行流量情况, 分别与针对每条链路预先设定的上行和下行流量 阈值比较, 汇总高于或低于预先设定阈值的链路, 确定需要流量调整的链 路, 根据预先输入的路由信息和设定的业务优先级顺序等信息, 生成并向 用户上行流量控制单元或用户下行流量控制单元下发流量控制策略命令。 保存基于 IP子网的每种业务类的流量控制策略,并按照一定的业务类优先 级顺序选择并向用户上行流量控制单元或用户下行流量控制单元下发用 户流量控制策略。 保存网络路由信息, 以确定与每条链路相关的 IP子网。
所述 IP区域网网元和用户流量策略服务单元之间的接口是 SNMP或 者 COPS协议, 所述用户上行流量控制单元和用户下行流量控制单元与用 户流量策略服务单元之间的接口可以都是 COPS 协议, 也可以采用 CLI ( Command Line Interface )方式。
本发明的自适应的流量控制方法是通过动态控制 IP区域网较低 QoS 要求的业务类的每个用户进入 IP区域网的上行和下行流量, 使较低 QoS 要求的数据业务特别是公众上网业务流量模型清晰, 通过整体流量规划改 善 IP区域网中 IP电信业务的 QoS。 公众上网业务具有随机性、 突发性等 特点,其流量模型具有不确定性。基于不同业务类使用不同的 IP地址空间, 通过基于用户和 IP地址的上行和下行流量控制策略,在用户上行流量控制 单元和用户下行控制器分别限制每个用户进入 IP区域网的流量。
本发明的自适应的流量控制方法包括在 IP 区域网接入层的用户上行 流量控制和在 IP区域网与 IP骨干网接口处的用户下行流量控制两个方面, 如图 2所示, 首先用户开始时采用默认的用户上行和下行流量控制策略产 生用户流量记录, 控制某种业务类的用户流量(步骤 201 ) ; 用户流量策 略服务单元收集 IP区域网链路的上行和下行流量统计数据,并分别与对该 链路预先设定的上行和下行流量阈值进行比较 (步骤 202) ; 根据比较结 果确定需要进行流量控制的链路 (步骤 203 ) ; 根据所述确定的链路, 以 及预先输入的路由信息和业务优先级顺序, 生成并向用户上行流量控制单 元和下行流量控制单元下发用户上行和下行流量控制策略命令 (步骤 204) ; 用户上行流量控制单元和用户下行流量控制单元根据所述策略命 令, 更新用户流量控制策略库 (步骤 205) ; 用户在用户上行流量控制单 元和用户下行流量控制单元分别根据源 IP地址和目的 IP地址, 査找匹配 的用户流量记录, 查到则更新用户流量记录的参数 (步骤 206) ; 如果没 有査到匹配的用户流量记录,则根据用户的 IP地址在各自的用户流量控制 策略库中采用最佳匹配算法查找用户上行和下行流量控制策略, 没有查找 到则采用默认策略 (步骤 207) ; 用户上行流量控制单元和下行流量控制 单元分别根据所述用户上行和下行流量控制策略, 产生用户流量记录, 控 制用户的上行和下行流量 (步骤 208) 。
如图 3所示, 为本发明所述的自适应流量控制系统示意图, 该系统由
IP区域网网元(即网络中的所有设备) 、 BRAS和 SR等 IP区域网接入层 设备上的用户上行流量控制单元 302、 用户下行流量控制单元 303和用户 流量策略服务单元 304组成。
IP区域网网元可以是目前 IP区域网的网络设备, 如路由器等, 支持 SNMP (Simple Network Management Protocol)代理和有关链路负载情况 的 MIB (Management Information Base), 或者支持 COPS (Common Open Policy Service)协议和有关链路负载情况的 PIB (Policy Information Base)。 可以根据用户流量策略服务单元的请求提供网元上链路负载情况的信息。
用户上行流量控制单元 302,可以是在现有的 IP区域网接入层设备上 实现的功能实体, IP区域网接入层的 BRAS设备已经有支持对每个用户上 行和下行流量限制的功能, SR上现有的 CAR功能可以支持基于源 IP地址 的流量控制, 用户上行流量控制单元可以分别对这些功能进行改造而成, 提供一个与用户流量策略服务单元的接口, 可以采用 COPS协议, 这样用 户上行流量控制单元是 COPS的 PEP (Policy Execution Point), 用于接收 用户流量策略服务单元下发的添加、 修改和删除上行流量控制策略的命 令, 也可以用 CLI方式或其他接口, 自动发送添加、 修改和删除上行流量 控制策略的命令。用户上行流量控制单元根据命令在流量控制策略库中添 力口、修改和删除流量控制策略,根据用户的源 IP地址,查询用户流量记录, 如果査到则更新用户记录的参数, 如果查不到, 则采用最佳匹配算法, 根 据用户的源 IP地址在流量控制策略库中査找用户流量控制策略,查找不到 采用默认策略, 基于流量控制策略为用户产生用户流量记录, 控制每个用 户进入 IP区域网的流量,并在设定的时间周期内没有流量时老化该用户的 用户流量记录。对于原来功能的策略査找算法、速率限制算法等不做改变。 用户上行流量控制单元可以保存默认的上行流量控制策略, 当设备启动, 或者在用户流量控制策略库中找不到用户流量控制策略时使用这些策略。
用户下行流量控制单元 303, 是根据本发明提供的独立设备, 可以串 接在 IP区域网与承载 Internet业务的 IP骨干网之间的链路上,可以几条链 路共用, 不需要路由、 组播等复杂的功能, 不改变网络的路由配置, 对链 路两端的设备是透明的。 出入该设备的流量不经过交换网, 在一个接口板 上通过网络处理器实现线速处理。 支持 FEI、 GEI、 10GE、 STM-1 POS、 STM-4 POS、 STM-16 POS STM-64 POS等端口类型。 在设备断电或故障 情况下, 光路可以直通。 提供一个与用户流量策略服务单元的接口, 可以 采用 COPS协议, 这样用户下行流量控制单元是 COPS的 PEP, 用于接收 用户流量策略服务单元下发的添加、 修改和删除下行流量控制策略的命 令, 也可以用 CLI方式或其他接口, 自动发送添加、 修改和删除上行流量 控制策略的命令。 用户下行流量控制单元根据命令在流量控制策略库中添 力 Π、修改和删除流量控制策略, 根据用户的目的 IP地址, 查询用户流量记 录,如果查到则更新用户记录的参数,如果查不到, 则采用最佳匹配算法, 根据用户的目的 IP地址在流量控制策略库中查找用户流量控制策略,查找 不到采用默认策略, 基于流量控制策略为用户产生用户流量记录, 控制每 个用户从 IP骨干网进入 IP区域网的流量, 并在设定的时间周期内没有流 量时老化该用户的用户流量记录。 流量控制策略查找可以参考现有的路由 表查找算法。 速率限制可以采用与现有的 CAR功能相同的算法。 用户下 行流量控制单元可以保存默认的下行流量控制策略, 当设备启动, 或者在 用户流量控制策略库中找不到用户流量控制策略时使用这些策略。 可以对 每个用户出入 IP区域网的流量进行统计, 以向计费系统提供数据,实现用 户 IP区域网内外流量的差异化资费。可以预留合法监控端口,支持国家安 全部门的合法监管, 主要包括: 支持端口镜像功能, 可以将某个端口或某 几个端口的流量拷贝一份并从一个监控端口输出; 支持基于五元组(源 IP 地址、 目的 IP地址、 协议、源端口、 目的端口)的流镜像, 可以将某个端 口或某几个端口的会话流量拷贝一份并从一个监控端口输出, 以监控某个 会话的流量; 支持基于五元组的 ACL (Access Control List) , 以拒绝某个 会话的流量进入 IP区域网;支持对某种长度范围的分组按照一定的概率实 施丢弃策略, 等等。
用户流量策略服务单元 304, 可以是一种与网络管理系统集成在一起 的管理程序或服务器, 也是本发明的自适应流量控制系统的 "心脏", 它 与 IP区域网网元 301的接口可以是 SNMP或 COPS协议, 通过该接口收 集并保存 IP区域网网元的链路带宽使用情况信息。用户流量策略服务单元 304与用户上行流量控制单元 302和用户下行流量控制单元 303的接口可 以都采用 COPS协议, 通过该接口向用户上行流量控制单元和用户下行流 量控制单元下发添加、 更新或删除用户流量控制策略的命令, 也可以采用
CLI的形式或其他接口, 自动向用户上行流量控制单元和用户下行流量控 制单元下发添加、 更新或删除用户流量控制策略的命令。 基于不同业务类 用户分配了不同的 IP地址池, 用户流量控制策略基于 IP子网定义了每类 业务每个用户进入 IP 区域网的流量调整策略, 用户流量控制策略可以由 IP子网和 IP子网流量控制模板组成, IP子网表示用户所属的 IP子网, IP 子网流量控制模板定义了对该 IP子网所对应的业务类的每个用户的流量 控制策略, 包括业务类型、 最大峰值带宽、 最小峰值带宽和调整步长 (可 以是百分比,也可以是带宽)等,业务类型定义了需要流量调整的业务类, 如银牌客户、 铜牌客户、 大客户上网、 公众上网等, 还可以添加业务类, 每个业务类有一个优先级定义, 在确定流量控制策略时, 向下调整按照优 先级从低向高的顺序, 向上调整按照优先级从高向低的顺序。 用户流量策 略服务单元应保存每条链路的上调阈值和下调阈值, 以及每个节点的路由 信息, 这些信息可以人工输入到用户流量策略服务单元。 通过将收集的链 路带宽使用情况与各阈值比较, 找出高于或低于各阈值的链路, 确定最需 要调整的 TopN链路(不一定所有的高于或低于阈值的链路都需要调整), 根据路由信息找到与这些 TopN链路相关的 IP子网,确定并产生对相关 IP 子网中每个用户采取的流量控制策略, 根据流量控制方向下发到相应的流 量控制器。
本发明的流量控制方法包括在 IP 区域网接入层的用户上行流量控制 和在 IP区域网与 IP骨干网接口处的用户下行流量控制两个方面, 如图 4 所示, 为在 IP区域网与 IP骨干网接口处的用户下行流量控制方法原理示 意图, 首先, 当用户下行流量控制单元启动时, 可以对某些业务类的每个 用户流量采用用户下行流量控制单元中的默认策略。 然后, 用户流量策略 服务单元通过 SNMP或 COPS协议收集并保存 IP区域网下行链路的带宽 使用情况信息。用户流量策略服务单元保存了每条链路下行方向的上调阈 值和下调阈值, 以及 IP区域网的路由信息,找出下行流量低于上调阈值和 高于下调阈值的链路, 确定最需要调整的 TopN链路, 从路由信息中找出 与这些 TopN链路相关的 IP子网, 确定并产生上调或下调该 IP子网中每 个用户下行流量的流量控制策略, 并用 COPS协议、 自动的 CLI或其他接 口方式分发到用户下行流量控制单元。在确定基于 IP子网的下行流量控制 策略时, 可能出现冲突, 如根据一条链路的带宽使用情况, 要求对某个 IP 子网上调每个用户下行流量, 而根据另一条链路的带宽使用情况, 要求对 同一个 IP子网下调每个用户下行流量,此时用户流量策略服务单元应该选 择下调流量控制策略。
用户下行流量控制单元支持 COPS协议、 自动 CLI方式或其他方式的 接口, 接收下行流量控制策略的命令, 用户下行流量控制单元根据命令在 流量控制策略库中添加、 修改和删除流量控制策略, 根据用户的目的 IP 地址,査询用户流量记录,如果查到则更新用户记录的参数,如果查不到, 则采用最佳匹配算法,根据用户的目的 IP地址在流量控制策略库中查找用 户下行流量控制策略, 查找不到采用默认策略, 基于下行流量控制策略为 该用户产生用户流量记录,从而控制某类业务的每个用户发送到 IP区域网 的下行流量。 用户下行流量控制单元可以老化这些用户流量记录, 某个用 户在设定的时间周期内没有流量时, 可以删除该用户的用户流量记录。
如图 5所示,为根据本发明在 IP区域网接入层的用户上行流量控制方 法原理示意图, 首先, 当用户上行流量控制单元启动时, 对某些业务类的 每个用户流量采用用户上行流量控制单元中的默认策略。 然后, 用户流量 策略服务单元通过 SNMP或 COPS协议收集并保存 IP区域网上行链路的 带宽使用情况信息。用户流量策略服务单元保存了每条链路上行方向的上 调阈值和下调阈值, 以及 IP区域网的路由信息,找出上行流量低于上调阈 值和高于下调阈值的链路, 确定最需要调整的 TopN (前 N条) 链路, 从 路由信息中找出与这些 TopN链路相关的 IP子网,确定并产生上调或下调 该 IP子网中每个用户上行流量的流量控制策略,并用 COPS协议、 自动的 CLI或其他接口方式分发到用户上行流量控制单元。在确定基于 IP子网的 上行流量控制策略时, 可能出现冲突, 如根据一条链路的带宽使用情况, 要求对某个 IP子网上调每个用户上行流量,而根据另一条链路的带宽使用 情况,要求对同一个 IP子网下调每个用户上行流量,此时用户流量策略服 务单元应该选择下调流量控制策略。 '
用户上行流量控制单元支持 COPS协议、 自动 CLI方式或其他方式的 接口, 接收上行流量控制策略的命令, 用户上行流量控制单元根据命令在 流量控制策略库中添加、修改和删除流量控制策略,根据用户的源 IP地址, 查询用户流量记录, 如果查到则更新用户记录的参数, 如果查不到, 则采 用最佳匹配算法,根据用户的源 IP地址在流量控制策略库中查找用户上行 流量控制策略, 查找不到采用默认策略, 基于上行流量控制策略为该用户 产生用户流量记录,从而控制某类业务的每个用户发送到 IP区域网的上行 流量。 用户下行流量控制单元可以老化这些用户流量记录, 某个用户在设 定的时间周期内没有流量时, 可以删除该用户的用户流量记录。 工业实用性
本发明可以运用于采用传统 IP技术传送上网业务流量的电信运营商 网络, 可能包括两种情况, 第一种情况是: IP区域网采用一张物理网络, 承载 NGN/SS VoIP, 3G、 大客户上网、 普通上网等多种业务, IP骨干网 釆用两张网络: 一张网络传送公众上网业务等流量模型不确定业务, 一张 网络传送 NGN/SS VoIP等流量模型清晰或基本清晰的业务。 另一种情况 是: IP区域网和 IP骨干网一样, 采用一张物理网络承载 NGN/SS VoIP、 3G、大客户上网、普通上网等多种业务。 当然也适合于类似的非电信运营 商网络。
采用本发明提出的用户下行流量控制单元在 IP区域网和 IP骨干网接 口处对用户下行流量进行控制, 结合接入层设备对用户上行流量的控制, 控制了每个公众上网用户的上行和下行流量, 使公众上网用户的流量模型 基本清晰。 通过用户流量策略服务单元, 可以根据网络链路的负载情况, 动态调整某些业务类的每个用户进出 IP区域网的流量。这样,一方面, 可 以通过流量规划, 优化 IP区域网的资源配置来实现对 IP电信业务的带宽 保证, 另一方面, 限制公众上网业务的每个用户的业务流量, 一定程度上 缓解了流量攻击对 IP区域网的影响,保证了大客户上网用户和公众上网用 户的公平权益。

Claims

权 利 要 求 书
1、 一种 IP网络自适应流量控制设备, 其特征在于, 包括下行流量控 制单元, 用以根据用户流量控制策略对用户从 IP骨干网进入 IP区域网的 流量进行调节, 该下行流量控制单元包括:
IP网络接口, 用于将所述下行流量控制设备串接于所述 IP骨干网与 IP区域网之间, 对两端网络的设备是透明的;
策略服务接口, 用于与用户流量控制策略服务单元进行通信; 策略管理模块, 用于对用户流量控制策略库进行管理, 包括添加、 修 改和删除操作;
策略接收模块, 用于通过所述策略服务接口, 接收来自所述用户流量 策略服务单元的命令, 利用所述的策略管理模块在用户流量控制策略库中 添加、 修改或删除用户流量控制策略, 并更新到相应的用户流量记录; 策略查找模块,用于根据用户的目的 IP地址,在用户流量控制策略库 査找最佳匹配的用户流量控制策略, 如果没有查找到, 采用默认策略; 用户流量记录管理模块,用于产生、查找、修改和老化用户流量记录; 流量控制模块, 用于根据所述用户流量记录, 控制所述用户从所述 IP 骨干网进入所述 IP区域网的流量。
2、 如权利要求 1 所述的设备, 其特征在于, 该下行流量控制单元还 包括:
流量统计模块,用于对每个用户进入 IP区域网的流量进行统计, 向计 费系统提供数据。
3、 如权利要求 1 所述的设备, 其特征在于, 该下行流量控制单元还 包括:
默认策略保存模块, 用于保存默认的下行流量控制策略, 当设备启动 或者在用户流量控制策略库中找不到用户流量控制策略时使用该默认策 略。
4、 如权利要求 1 所述的设备, 其特征在于, 该下行流量控制单元还 包括:
监控端口, 用于支持对端口流量的合法监管。
5、 如权利要求 1 所述的设备, 其特征在于, 所述的用户流量记录管 理模块,为所述用户产生用户流量记录,根据目的 IP地址查找用户流量记 录, 根据用户流量控制策略的改变, 修改相应的用户流量记录的参数, 如 果用户流量记录在设定的时间周期内没有流量时, 老化该用户流量记录。
6、 一种应用权利要求 1所述设备的 IP网络自适应流量控制方法, 其 特征在于, 该方法包括进行用户下行流量控制, 即根据用户流量控制策略 命令对用户从 IP骨干网进入 IP区域网的流量进行调节, 包括如下步骤: 开始时对用户运用默认的用户下行流量控制策略产生用户流量记录, 控制用户的从 IP骨干网到 IP区域网的下行流量;
当接收到用户流量策略服务单元的命令后, 在用户流量控制策略库中 添加、 修改或删除用户流量控制策略, 更新到相应的用户流量记录中; 根据用户的目的 IP地址,查找匹配的用户流量记录,如果査到则更新 用户流量记录的参数;
如果没有查到与用户的目的 IP地址匹配的用户流量记录,则根据用户 的目的 IP地址,在用户流量控制策略库中查找与之最佳匹配的用户下行流 量控制策略, 如果仍查找不到则采用默认策略;
根据所述用户下行流量控制策略, 为该用户产生用户流量记录; 及 根据所述用户流量记录, 控制用户的从所述 IP骨干网进入所述 IP区 域网的下行流量。
7、 如权利要求 6所述的方法, 其特征在于, 还包括如下步骤- 对每个用户进入 IP区域网的流量进行统计, 向计费系统提供数据。
8、 如权利要求 6所述的方法, 其特征在于, 还包括如下步骤: 保存默认的下行流量控制策略, 当设备启动, 或者在用户流量控制策 略库中找不到用户流量控制策略时使用该默认策略。
9、一种 IP网络自适应流量控制系统,对进入 IP区域网的用户流量进 行控制, 其特征在于, 包括:
用户流量策略服务单元,用于收集 IP区域网链路的上行与下行流量统 计数据, 分别与预先设定的阈值进行比较, 以确定需要进行流量控制的链 路, 根据预先输入的路由信息和设定的业务优先级顺序, 产生并下发上行 或下行流量控制策略命令;
IP区域网网元, 用于统计其链路上的上行与下行流量数据, 并通过接 口向所述用户策略服务单元上报所述数据;
上行流量控制单元, 用于根据所述用户上行流量控制策略, 对用户的 上行流量进行控制;
下行流量控制单元, 包括:
IP网络接口, 用于将所述下行流量控制单元串接于所述 IP骨干网与 IP区域网之间, 对两端网络的设备是透明的;
策略服务接口, 用于与所述用户流量策略服务单元进行通信; 策略管理模块, 用于对用户流量控制策略库进行管理, 包括添加、 修 改和删除操作;
策略接收模块, 用于通过所述策略服务接口, 接收来自所述用户流量 策略服务单元的命令, 利用所述的策略管理模块在用户流量控制策略库中 添加、 修改或删除用户流量控制策略, 并更新到相应的用户流量记录; 策略査找模块,用于根据用户的目的 IP地址,在用户流量控制策略库 查找最佳匹配的用户流量控制策略, 如果没有查找到, 采用默认策略; 用户流量记录管理模块,用于产生、査找、修改和老化用户流量记录; 流量控制模块, 用于根据所述用户流量记录, 控制所述用户从所述 IP 骨干网进入所述 IP区域网的流量。
10、 如权利要求 9所述的系统, 其特征在于, 所述下行流量控制单元 还包括:
流量统计模块,用于对每个用户进入 IP区域网的流量进行统计, 向计 费系统提供数据。
11、 如权利要求 9所述的系统, 其特征在于, 所述下行流量控制单元 还包括:
默认策略保存模块,用于保存默认的下行流量控制策略,当设备启动, 或者在用户流量控制策略库中找不到用户流量控制策略时使用该默认策 略。
12、 如权利要求 9所述的系统, 其特征在于, 所述下行流量控制单元 还包括:
监控端口, 用于支持对端口流量的合法监管。
13、 如权利要求 9所述的系统, 其特征在于, 所述的用户流量记录管 理模块,为所述用户产生用户流量记录,根据目的 IP地址查找用户流量记 录, 根据用户流量控制策略的改变, 修改相应的用户流量记录的参数, 如 果用户流量记录在设定的时间周期内没有流量时, 老化该用户流量记录。
14、如权利要求 9所述的系统,其特征在于,所述 IP区域网网元与用 户流量策略服务单元之间的接口是 SNMP或者 COPS协议,所述上行流量 控制单元及下行流量控制单元, 与所述用户流量策略服务单元之间的接口 是 COPS协议、 采用 CLI方式或其他形式。
15、 一种 IP网络自适应流量控制方法, 对每个用户的进入 IP区域网 流量进行控制, 其特征在于, 包括如下步骤:
用户开始时在用户上行流量控制单元和用户下行流量控制单元分别 采用默认的用户上行和下行流量控制策略产生用户流量记录, 控制某种业 务类的用户流量;
用户流量策略服务单元收集 IP 区域网链路的上行和下行流量统计数 据, 并分别与对该链路预先设定的上行和下行流量阈值进行比较;
根据比较结果确定需要进行流量控制的链路;
根据所述确定的链路, 以及预先输入的路由信息和设定的业务优先级 顺序, 生成并分别向用户上行流量控制单元和下行流量控制单元下发用户 流量控制命令;
用户上行流量控制单元和下行流量控制单元根据所述策略命令, 更新 自己的用户流量控制策略库;
用户上行流量控制单元和下行流量控制单元分别根据用户的源 IP地 址和目的 IP地址,査找匹配的用户流量记录,查到则更新用户流量记录的 参数;
如果没有査到匹配的用户流量记录,则分别根据用户的源 IP地址和目 标 IP地址在各自的用户流量控制策略库中采用最佳匹配算法査找用户上 行和下行流量控制策略, 没有査到则采用默认策略; 及
用户上行流量控制单元和下行流量控制单元分别根据所述用户上行 和下行流量控制策略, 产生用户流量记录, 控制用户的上行和下行流量。
16、 如权利要求 15所述的方法, 其特征在于, 还包括如下步骤: 对每个用户出入 IP区域网的流量进行统计, 向计费系统提供数据。
17、 如权利要求 15所述的方法, 其特征在于, 还包括如下步骤: 保存默认的上行和下行流量控制策略, 当设备启动, 或者在用户流量 控制策略库中找不到用户流量控制策略时使用该默认策略。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101715182B (zh) * 2009-11-30 2012-11-21 中国移动通信集团浙江有限公司 一种流量控制方法、系统和设备
CN106304012A (zh) * 2015-05-22 2017-01-04 中兴通讯股份有限公司 流量管理方法、装置、系统、用户终端及策略计费装置
CN113365386A (zh) * 2021-06-11 2021-09-07 南昌大学 一种室内照明系统的控制方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003258881A (ja) * 2002-02-28 2003-09-12 Nippon Telegr & Teleph Corp <Ntt> アダプティブ品質制御方式
CN1468001A (zh) * 2002-06-27 2004-01-14 上海汉唐科技有限公司 基于因特网的媒体流自适应传输方法
CN1545256A (zh) * 2003-11-11 2004-11-10 中兴通讯股份有限公司 测试以太网交换机稳定性的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003258881A (ja) * 2002-02-28 2003-09-12 Nippon Telegr & Teleph Corp <Ntt> アダプティブ品質制御方式
CN1468001A (zh) * 2002-06-27 2004-01-14 上海汉唐科技有限公司 基于因特网的媒体流自适应传输方法
CN1545256A (zh) * 2003-11-11 2004-11-10 中兴通讯股份有限公司 测试以太网交换机稳定性的方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101715182B (zh) * 2009-11-30 2012-11-21 中国移动通信集团浙江有限公司 一种流量控制方法、系统和设备
CN106304012A (zh) * 2015-05-22 2017-01-04 中兴通讯股份有限公司 流量管理方法、装置、系统、用户终端及策略计费装置
CN113365386A (zh) * 2021-06-11 2021-09-07 南昌大学 一种室内照明系统的控制方法及装置

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