WO2008019619A1 - Équipement et système multi-extrémité et multiservice - Google Patents

Équipement et système multi-extrémité et multiservice Download PDF

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Publication number
WO2008019619A1
WO2008019619A1 PCT/CN2007/070441 CN2007070441W WO2008019619A1 WO 2008019619 A1 WO2008019619 A1 WO 2008019619A1 CN 2007070441 W CN2007070441 W CN 2007070441W WO 2008019619 A1 WO2008019619 A1 WO 2008019619A1
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WIPO (PCT)
Prior art keywords
access network
edge node
bng
service
bras
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PCT/CN2007/070441
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English (en)
Chinese (zh)
Inventor
Ruobin Zheng
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008019619A1 publication Critical patent/WO2008019619A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access

Definitions

  • the present invention relates to the field of network communications, and in particular, to a multi-service multi-edge device and system.
  • FIG. 1 the general reference architecture of the access network is shown in Figure 1, including: CPN (customer premises network), Access Network (Access Network), and SP (Service Provider). Business) three parts. Among them, CPN by UE (customer premises network), Access Network (Access Network), and SP (Service Provider). Business) three parts. Among them, CPN by UE (customer premises network), Access Network (Access Network), and SP (Service Provider). Business) three parts. Among them, CPN by UE (customer
  • Gateway resident gateway
  • access network by AN (Access
  • the access network is connected to the SP
  • the SP can be an ASP (Application Service Provider) or NSP (Network Service Provider, Network Business provider).
  • EN is ASN (Access Service)
  • GW Gateway, gateway
  • AN is BS (base station); for DSL (Digital Subscriber Line) network, EN is BRAS (BRAS, Broadband Remote Access Server, Broadband Access Server) / BNG (Broadband Network)
  • BRAS Broadband Remote Access Server, Broadband Access Server
  • BNG Broadband Network
  • AN is DSLAM (DSL Access
  • IPTV IP TV
  • VoIP IP voice
  • multimedia services such as online games.
  • Some of these multimedia services have different requirements for bearer networks than traditional Internet access, such as bandwidth requirements, QoS (quality of service) requirements, scalability, and reliability requirements.
  • the current metropolitan area network architecture is designed only for best-effort Interne t access, and does not take into account the impact of introducing various multimedia services on the network.
  • the network edge node is the originating point of the related service.
  • Current metropolitan area networks are based on single-edge device architectures.
  • the different types of services differ in their essential characteristics, so that the network operator provides different types of services on the above-mentioned single edge device at low cost and high efficiency. The more difficult it is. Therefore, in order to adapt to new business needs, network access providers need to use multiple edge devices. By distributing the services provided by different SPs on different edge nodes, the multiple edge devices can provide great flexibility for implementing and providing various new service types, which can greatly improve network scalability and reliability. . For services with redundancy requirements, you can flexibly deploy redundant service edge nodes for them.
  • the DSLAM, BS or AP basically does not require software upgrades and maintenance, and can be made into a maintenance-free, closed device placed at a node close to the user.
  • Fiber-based access networks mainly include: OLT (optical line
  • Network optical distribution network
  • ONU/ONT optical network unit, optical network unit / Optical
  • CS In order to support DSLoF and RoF, CS also implements Layer 2 of DSLAM and BS/AP.
  • the DSLAM BS or AP can be connected via ODN and CS.
  • CS is equivalent to an edge node in an access network based on fiber technology.
  • FIG. 3 A schematic diagram of a single edge multi-service network in the prior art is shown in FIG. 3.
  • AN corresponds to a single BNG or BRAS or ASN
  • the access server controls the user's selection of the service provider and the subsequent service flow processing.
  • BNG/BRAS Since different SP services are converged to the same BNG/BRAS, in order to isolate the services of different SPs, BNG/BRAS must support virtual router technology, that is, multiple virtual IP domains must be simulated on BNG/BRAS. The SPs belong to different virtual IP domains. Therefore, the BNG/BRAS function will be complicated and costly; for each SP, the IP address will be reassigned to all edge nodes, and the impact on the BNG and AN network will be greater;
  • BNG/BRAS needs to support various service features, that is, for each new service added, it is necessary to add related feature support to BNG/BRAS; and all users are authenticated, Control flow such as billing also needs to be supported on BNG/BRAS, which results in a variety of functions that BNG/BR AS needs to support, and poor scalability, which causes BNG BRAS to become the bottleneck of the entire network; [14] 3
  • the architecture of the single-edge multi-service network is designed only for best-effort Internet access.
  • QoS-supported services such as ⁇
  • the architecture will face bandwidth shortages and QoS cannot be guaranteed. .
  • FIG. 4 A schematic diagram of a multi-edge multi-service network in the prior art is shown in FIG. 4.
  • the AN is connected to multiple BNGs, and each SP is also connected to a different BNG.
  • the cost is high, and the scalability of the network is not good.
  • the DSLAM BS or AP will be connected to the new CS, and it is almost impossible to connect to the original BNG. If you add Remote
  • the original BNG needs to be enhanced to the DSLAM and BS.
  • the support of the /AP's Layer 2, Layer 2 and above and some physical layer hybrid functions will increase the complexity of the original BNG.
  • An object of the present invention is to provide a multi-service multi-edge device and system, thereby providing users with more access through the access network while simplifying the function of the edge node of the access network and reducing the cost of the edge node of the access network. business.
  • An access network edge node device comprising:
  • User side port communication module used for communicating with an access network access node
  • Network side port communication module used to communicate with an external network node of the access network
  • Edge node interconnection communication module used to implement access network edge node equipment and other access network edge node device interconnection communication;
  • IP routing module used to implement the IP routing function of the edge node device of the access network
  • Bridge Module Used to implement access bridge edge node device support bridging function.
  • An access network system comprising an access network edge node device and an access node AN, wherein the access network edge node device is connected to the SP and the AN, and communicates with the SP and the AN.
  • a multi-service multi-edge system comprising: at least two access network systems, each access network system by an access network edge node device and other access according to any one of claims 1 to The network system is interconnected, and the access network edge node device of each access network system is only connected to the SP corresponding to the access network system.
  • the present invention expands the functions of an access network edge node (for example, CS), and connects multiple access networks through an access network edge node.
  • an access network edge node for example, CS
  • it is not necessary to simulate multiple virtual IP domains on the access network edge node device, which simplifies the function of the access network edge node device and reduces the cost of the access network edge node device.
  • the present invention introduces a multi-edge structure, which avoids an access network edge node in an existing single-edge multi-service access network.
  • the device becomes a bottleneck.
  • FIG. 1 is a schematic diagram of a general reference architecture of an existing universal access network
  • Figure 2 is a schematic diagram of an existing access network based on fiber technology
  • FIG. 3 is a schematic structural diagram of a single edge multi-service network in the prior art
  • FIG. 4 is a schematic structural diagram of a multi-edge multi-service network in the prior art
  • FIG. 5 is a schematic structural diagram of an embodiment of an edge node device according to the present invention.
  • Embodiment 1 of a multi-service multi-edge system according to the present invention
  • FIG. 7 is a schematic diagram of a logical connection in Embodiment 1 of the multi-service multi-edge system according to the present invention
  • FIG. 8 is a schematic diagram of Embodiment 1 of the multi-service multi-edge system according to the present invention
  • FIG. 9 is a schematic diagram of a logical connection in Embodiment 1 of the multi-service multi-edge system according to the present invention
  • FIG. 10 is a second embodiment of the multi-service multi-edge system of the present invention Schematic;
  • Embodiment 3 is a schematic structural diagram of Embodiment 3 of the multi-service multi-edge system of the present invention.
  • FIG. 12 is a schematic diagram of the ARP proxy process of the CS in FIG. 6;
  • FIG. 13 is a schematic diagram of the IP bridging/routing mixing process of the CS in FIG. 6;
  • FIG. 14 is a schematic diagram of NAS and AR proxy functions of a CS in a multi-service multi-edge system according to the present invention
  • FIG. 15 is a NAS and AR proxy function of a CS in a multi-service multi-edge system according to the present invention
  • FIG. 16 is a schematic diagram of a DHCP Proxy/Relay function of a CS in a multi-service multi-edge system according to the present invention
  • FIG. 17 is a DHCP of a CS in a multi-service multi-edge system according to the present invention.
  • the present invention provides a multi-service multi-edge device and system.
  • the present invention extends the function of an edge node in an access network, and interconnects the access network and the access network through edge nodes.
  • the edge nodes of the access networks are only connected to the SPs and ANs corresponding to the access network.
  • the multi-service multi-edge system of the present invention is composed of respective access networks interconnected by edge node devices, and the edge node devices of each access network are only connected to the SPs and ANs corresponding to the access network.
  • the foregoing access network includes: an access network such as a DSL access network, a WIMAX access network, and an optical access network based on optical fiber technology.
  • an access network such as a DSL access network, a WIMAX access network, and an optical access network based on optical fiber technology.
  • User side port communication module used for communicating with an access node of an access network
  • Network side port communication module used for communicating with an external network node of the access network
  • Edge node interconnection communication module used to implement access network edge node equipment and other access network edge node device interconnection communication;
  • IP routing module It is used to implement the IP routing function of the access network edge node device
  • Bridging module It is used to implement the bridging function of the access network edge node device.
  • the bridging module includes: an IP bridging module and a Layer 2 bridging module.
  • the IP bridging module is used to implement the two-layer and three-layer hybrid functions of the edge node device of the access network to support IP routing and IP bridging.
  • the second layer bridge module used to implement the access network edge node device to support IP routing and Layer 2 bridge mixing function.
  • the foregoing edge node device may further include the following modules:
  • Access Node Interconnect Module Used to interconnect access node equipment of access network edge node equipment and other access networks.
  • Agent module Used to implement the ARP proxy for the edge node device of the access network.
  • Dynamic Host Configuration Protocol Used to implement access network edge node devices to support DHCP proxy or transit.
  • NAS Network Access Server, Network Access Server
  • AR Authentication
  • Relay Used to implement access network edge node devices to support NAS and AR agents.
  • the present invention provides an access network system, which mainly includes: an SP (service provider) and an access network.
  • SP is connected to and communicates with an access network edge node device in the access network
  • Access network The foregoing access network edge node device and the AN are connected, and the access network edge node device is connected to the SP and the AN, and communicates with the SP and the AN.
  • the present invention also provides a multi-service multi-edge system, the multi-service multi-edge system mainly includes:
  • Embodiment 1 of the multi-service multi-edge system of the present method is as shown in FIG. 6, and includes the following units: DSL access network unit and access based on optical fiber technology.
  • Network unit DSL access network unit and access based on optical fiber technology.
  • Access network unit Includes BNG/BRAS equipment, aggregation network and AN.
  • the BNG BRAS device acts as the IP edge node of the DSL access network, connects its corresponding SPs in the SP and DSL access networks that are not connected to other BNG/BRAS devices, and peers, through the aggregation network in the DSL access network and based on The CS devices in the access network unit of the fiber technology are connected.
  • Access network elements based on fiber technology including CS equipment, ODN and BS/AP/Remote
  • the DSLAM/ONU/ONTo CS device acts as an IP edge node of the access network based on fiber technology, connecting its corresponding SPs connected to other CS devices and ODNs in the fiber-based access network, peers, and DSLs.
  • the aggregation network in the access network is connected.
  • the ER acts as an interconnect route between the SP and the CS.
  • Each BNG/BRAS device includes the following modules:
  • network side port communication module for communicating with an external network node of the access network
  • Edge node interconnection communication module used to implement interconnection communication between BNG/BRAS devices and other access network edge node devices;
  • IP routing module used to implement BNG/BRAS devices to support IP routing functions
  • Bridge Module Used to implement BNG/BRAS devices to support bridging.
  • the bridging module includes: an IP bridging module and a Layer 2 bridging module.
  • IP bridging module used to implement BNG BRAS equipment to support IP bridging function.
  • the gPBNG BRAS device can be used as a special IP edge node or as a special AN.
  • the two-layer bridge module used to implement BNG/BRAS equipment to support Layer 2 bridging function.
  • Each CS device includes the following modules: [83] Network side port communication module: used for communicating with an external network node of the access network;
  • Edge Node Interconnect Communication Module Used to implement CS device and other access network edge node device interconnection communication
  • IP routing module used to implement CS device support IP routing function
  • Bridge Module Used to implement CS device support bridging.
  • the bridging module includes: an IP bridging module and a Layer 2 bridging module.
  • the IP bridge module used to implement CS bridge support IP bridge function. That is, the CS device can be used as a special IP edge node or as a special AN.
  • BNG1 is an IP edge node
  • CS is a special AN of BNG1, which supports IP bridging or Layer 2 bridging.
  • CS is an IP edge node and supports IP routing. Function: If CS does not support AN interconnection with DSL access network, Bay I" BNG1, as a special AN of CS, must support IP bridging or Layer 2 bridging.
  • Layer 2 Bridge Module Used to implement CS device support Layer 2 bridge function.
  • Interconnect module used to connect to the aggregation network in the DSL access network, and interconnect the AN equipment in the DSL access network through the aggregation network.
  • ARP proxy module Used to implement CS device support ARP proxy function.
  • DHCP proxy module Used to implement CS device support ARP proxy or transit function.
  • NAS and AR modules Used to implement CS devices supporting NAS and AR proxy functions.
  • the CS device is an IP edge node in the access network based on the optical fiber technology, the CS device further includes:
  • CS device Used to implement CS device support OLT function, so that CS device connects with ONU/ONT through ODN.
  • FIGS. 1-10 A schematic diagram of the logical connections in this embodiment is shown in FIGS.
  • the DSLAM/ONU/ONT path provides services to the new fiber-based technology-based access network; SP2 directly passes CS->BS/AP/Remote
  • the DSLAM/ONU/ONT path provides services to the new fiber-based technology-based access network.
  • SP1 directly provides services to the DSL access network through the path of BNG/BRAS1->AN;
  • Bay I BNG/BRAS1 is a special AN of CS, providing IP bridging or Layer 2 bridging. So, SP2 passes CS->BNG/BRAS
  • 1-> AN's path provides services to the DSL access network.
  • the SP2 when the CS supports the AN interconnection with the DSL access network, the SP2 provides the service to the DSL access network through the path of the CS->AN; and the SP1 directly passes the BNG BRAS1->AN. Path to provide services to DS
  • Embodiment 2 of the multi-service multi-edge system of the present method is as shown in FIG. 10, and includes: a DSL access network unit and a WIMAX access network unit.
  • Access network unit Includes: BNG/BRAS equipment and AN.
  • the BNG BRAS device acts as the IP edge node of the DSL access network, and connects its corresponding AN in the SP and DSL access networks that are not connected to other BNG BRAS devices, and is connected to the ASN GW device in the WIMAX access network unit. .
  • WIMAX Access Network Unit Includes: ASN GW equipment and BS.
  • ASN Address Translation
  • the GW device acts as the edge node of the WIMAX access network, connecting its corresponding non-other ASNs.
  • the SP connected to the GW device and the BS in the WIMAX access network, peers, and BNG/BRA in the DSL access network
  • the S device is connected.
  • the SP connected to the BNG/BRAS device passes BNG/BRAS to ASN
  • the GW to BS path provides services to the WIMAX access network; the ASN
  • the SP connected by the GW device provides a service to the WIMAX access network through the path of the ASN GW to the BS; [107]
  • the SP connected by the BNG/BRAS device provides a service to the DSL access network through a path of the BNG/BRAS to the AN; the SP connected by the ASN GW device passes the ASN.
  • the path from the GW to the BNG/BRAS to the AN provides services to the DSL access network.
  • Embodiment 3 of the multi-service multi-edge system of the present method is as shown in FIG. 11, and includes the following units:
  • Fiber-based access network 1 Unit Includes AN in CS1 equipment, ODN, and fiber-based access networks.
  • the CS1 device acts as an IP edge node of the access network 1 based on the optical fiber technology, and connects its corresponding SP that is not connected to other CS devices and the ODN in the optical fiber-based access network 1, the same, and the fiber-based technology-based connection.
  • the CS2 devices in network 2 are connected.
  • Fiber-based access network 2 Units AN in CS2 equipment, ODN and fiber-based access networks.
  • the CS2 device acts as an IP edge node of the access network 2 based on the optical fiber technology, and connects its corresponding SP that is not connected to other CS devices and the ODN in the optical fiber-based access network 2, and the optical fiber-based connection.
  • the CS1 devices in network 1 are connected.
  • Each CS device includes the following modules:
  • network side port communication module used for communicating with an external network node of the access network
  • edge node interconnection communication module used to implement access network edge node equipment and other access network edge node device interconnection communication;
  • IP routing module used to implement CS device support IP routing function
  • Bridge Module Used to implement CS device support bridging.
  • the bridging module includes: an IP bridging module and a Layer 2 bridging module.
  • IP bridging module used to implement CS bridge support IP bridging function. That is, the CS device can be used as a special IP edge node or as a special AN. That is, the CS device can be used as a special IP edge node or as a special AN.
  • CS1 is an IP edge node and supports IP.
  • CS2 as a special AN of CS1, support IP
  • CS2 Bridging or Layer 2 bridging; for SP2, CS2 is an IP edge node, supporting IP
  • the second layer bridge module used to implement the CS device to support the Layer 2 bridge function.
  • Access Node Interconnect Module Used to interconnect access node equipment of an access network edge node device and other access networks.
  • ARP proxy module Used to implement CS device support ARP proxy function.
  • DHCP Proxy Used to implement CS device support DHCP proxy or transit function.
  • NAS and AR modules Used to implement CS devices supporting NAS and AR proxy functions.
  • the CS device It is used to implement the Layer 2, Layer 2 and above and some physical layer functions of the CS device supporting BS/AP, that is, the RoF function is implemented.
  • the CS device is connected to the BS/AP through the ODN.
  • CS device Used to implement CS device support OLT function, so that CS device connects with ONU/ONT through ODN.
  • the DSLAM/ONU/ONT path provides services to the fiber-optic technology-based access network where CS1 is located; SP1 also connects to BS/AP/Remote via CS 1 -> CS2-> and CS2.
  • the DSLAM/ONU/ONT path provides services to the fiber-optic technology-based access network where CS2 resides.
  • the DSLAM/ONU/ONT path provides services to the fiber-optic technology-based access network where CS2 is located; SP2 also connects to BS/AP/Remote via CS2->CS 1 ->3 ⁇ 4CS 1
  • the path of the DSLAM/ONU/ONT provides services to the fiber-optic technology-based access network where CS 1 is located.
  • Embodiment 4 of the multi-service multi-edge system of the method includes the following units:
  • Access Network Unit 1 Includes: BNG/BRAS1 equipment and AN. As the IP edge node of the DSL access network 1, the BNG BRAS1 device is connected to its corresponding SP that is not connected to other BNG/BRAS devices, and is connected to the BNG/BRAS2 device in the DS L access network 2;
  • DSL Access network 2 unit Includes: BNG/BRAS2 device and AN.
  • the BNG BRAS2 device acts as an IP edge node of the DSL access network 2, and connects its corresponding SP that is not connected to other BNG/BRAS devices, and is connected to the BNG/BRAS1 device in the DS L access network 1.
  • the SP connected by the BNG/BRAS1 device provides traffic to the DSL access network 2 through the path of the BNG/BRAS1 to the BNG/BRAS2 to the AN; the path of the SP connected by the BNG/BRAS2 device passes the BNG/BRAS2 to the AN Provide services to the DSL access network 2;
  • the SP connected by the BNG/BRAS1 device provides traffic to the DSL access network 1 through the path of the BNG/BRAS1 to the AN; the SP connected by the BNG/BRAS2 device provides the path through the BNG/BRAS2 to the BNG BRAS1 to the AN.
  • the service is sent to the DSL access network 1.
  • the bridging/routing hybrid function is similar to the ARP proxy function and the IP bridging/routing hybrid function of the BNG in Fig. 8, Fig. 11, and Fig. 9 and Fig. 10, and the following description.
  • the IP address is IPa
  • the IP address of BNG/BRAS 1 is IPx
  • the MAC address of the UE is MAC1
  • the AC address is MAC2.
  • the MAC address of BNG/BRAS 1 is MAC4; the CS user port where the UE is located is port x, CS is connected to BNG/BRAS through port n, and CS is connected to SP2 through port t.
  • the schematic diagram of the ARP proxy process is shown in Figure 12.
  • the CS supports the ARP proxy function, and the ARP is in TCP/I.
  • a protocol used to convert an IP address into a corresponding MAC address in a P network environment For users from port X
  • ARP request (ARP-req)
  • CS responds with ARP reply with MAC address of MAC address (ARP-reply)
  • the CS can obtain the MAC address of the UE through the DHCP message initiated by the UE, thereby establishing an IP bridge-based IP bridge forwarding table on the CS, and the IP bridge
  • the structure of the forwarding table is shown in Table 1.
  • the IP session is represented by the user-side physical port, the user IP address, and the user's MAC address.
  • the IP service connection is represented by the network-side physical port, the S-VLAN (virtual local area network identifier), and the IP edge node MAC address.
  • FIG. 13 A schematic diagram of the bridging/routing mixing process is shown in Figure 13, where the parentheses indicate a layer of a packet, the IP address is an IP packet, and the MAC address is a MAC frame.
  • the CS senses traffic based on information such as connection identifier, tunnel identity, or S-VLAN. If the service of the user group belongs to SP2, the IP routing function module of the CS performs corresponding routing processing, and routes to the next hop through the CS network side port t.
  • the CS checks the IP bridge forwarding table (ie, Table 1) of the CS according to the source IP address of the IP packet (in this example, IPa), and obtains the physical port on the network side (in this example, the port) n), S-VLAN (0111 in this example) and IP edge node MAC address (MAC4 in this example), then change the destination address of the packet's MAC frame to MAC4, and change the source address to CS's MAC address MAC2. Add or modify the S-VLAN in the MAC frame to ⁇ ⁇ ; '; then forward the packet to the BNG/BRAS through port n to complete the IP bridging at the node.
  • Port n can also be used
  • IP service connection is only by S-VLAN and BNG.
  • the MAC address is characterized.
  • the lookup table gets the S-VLAN as ⁇ 11 ⁇ , it is forwarded by port n by default.
  • the routing function module performs corresponding routing processing, and routes to the next through the port where the corresponding user IP address is located. One jump.
  • the CS checks the CS IP bridge forwarding table (ie, Table 1) according to the IP packet destination IP address (in this example, IPa), and obtains the user.
  • the physical port of the side (port X in this example) and the MAC address of the user (in this case, MAC1) then change the destination address of the MAC frame of the packet to MAC1, and change the source address to the MAC address of the CS, MAC2;
  • the packet is forwarded to the user via port X, completing the IP bridging at that node.
  • the CS senses traffic based on methods such as MAC address, connection identifier, or user VLAN. If the service of the user data belongs to the SP2, the IP routing function module of the CS performs the corresponding routing processing, and the CS network side port t is routed to the next hop; if the service of the user data belongs to the SP1, the CS layer 2 bridge function module performs the The corresponding Layer 2 bridge processing is forwarded to the BNG/BRAS through port n.
  • the routing function module performs corresponding routing processing, and routes to the next hop through the port where the corresponding user IP address is located; for the packet from the CS network side port n, the CS layer 2 bridge function module performs corresponding layer 2 bridge processing, through the port X Forward to the user.
  • the UE sends an authentication message to CS1 to initiate an authentication process.
  • the authentication message carries a Network Access Identifier (NAI).
  • NAI Network Access Identifier
  • the NAI is used to indicate which service provider the UE belongs to.
  • the CS1 determines NAS/AAA according to the NAI.
  • the client function is still doing the authentication relay function.
  • the shell I"CS1 acts as the NAS/AAA client function to transfer the authentication message to the AAA Server1 for authentication.
  • the I1 CS1 is used as the AR function to transfer the authentication message to the CS2, and the C22 implements the NAS/AAA client function according to the NAI to transfer the authentication message to the AAA Server2 to complete the authentication.
  • the schematic diagram of the Proxy/Relay function is shown in Figure 16.
  • the specific implementation process is shown in Figure 17.
  • the specific implementation process is also applicable to the BNG/BRAS/ASN GW.
  • the detailed description is as follows:
  • a DHCP message is sent to the CS1 to initiate a DHCP process.
  • the DHCP message carries an attribute parameter, which is used to indicate the user terminal type or service type.
  • the CS1 sends a DHCP message to the corresponding SP according to the attribute parameter carried in the DHCP message.
  • CS1 sends a DHCP message as DHCP Proxy/Relay to SP1's DHCP Server1;
  • Relay/Relay transfers the DHCP message to CS2.
  • CS2 implements the DHCP Proxy/Relay function according to the attribute parameters carried in the DHCP message to transfer the DHCP message to DHCP Server2 of SP2.
  • the present invention extends the functionality of an access network edge node (e.g., CS) by connecting multiple access networks through an access network edge node.
  • an access network edge node e.g., CS
  • BNG/BRAS in the existing DSL access network does not need to support virtual router technology, that is, it does not need to simulate multiple virtual IP domains on BNG/BRAS, which simplifies the function of BNG/BRAS and reduces B NG. BRAS cost.
  • the DSLAMs BS or AP does not need to be connected to the BNG/BRAS in the original DSL access network, and is interconnected with the BNG/BRAS in the original DSL access network to obtain the original DSL access network.
  • SP Provided business.
  • the original AN can also be interconnected with the BNG/BRAS in the original DSL access network through the CS, thereby obtaining the services provided by the newly added SP.
  • the DSLAMs BS or AP and the original AN do not need to increase their uplink ports.
  • the aggregation network in the original DSL access network does not need to be modified.
  • the impact on the original DSL access network is low, and the cost is low. Strong scalability.
  • the new BSP does not need to be connected to the original BNG, through the ASN.
  • the interconnection between the GW and the original BNG is provided by the SP of the original DSL access network, and the AN of the original DSL access network can also pass the ASN.
  • the interconnection between the GW and the BNG of the original DSL access network is provided by the service of the newly added SP.
  • the BNG/BRAS in the original DSL access network does not need to enhance the support of the Layer 2, Layer 2 and above and some physical layer hybrid functions of the DSLAM and the BS/AP, and can coexist with the access network based on the optical fiber technology. , supports DSPoF and RoF.
  • CS supports the Layer 2 and Layer 3 hybrid functions of IP routing and IP bridging, enabling the entire system to flexibly support multi-service access networks.

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  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un équipement et un système multi-extrémité et multiservice. L'équipement comprend principalement un équipement de noeud d'extrémité de réseau d'accès. Le système comprend principalement un système de réseau d'accès et un système multi-extrémité et multiservice. Le système de réseau d'accès comprend principalement : un FS (fournisseur de services) et un réseau d'accès. Le système multi-extrémité et multiservice comprend principalement au moins deux systèmes de réseau d'accès interconnectés au moyen d'un équipement de noeud d'extrémité de réseau d'accès; l'équipement de noeud d'extrémité de réseau d'accès de chaque système de réseau d'accès ne se connectant qu'à un FA correspondant. L'équipement et le système de l'invention permettent de fournir une offre multiservice à un utilisateur au moyen du réseau d'accès par simplification de la fonction d'un noeud d'extrémité de réseau d'accès et par réduction des coûts dudit noeud d'extrémité de réseau d'accès.
PCT/CN2007/070441 2006-08-09 2007-08-09 Équipement et système multi-extrémité et multiservice WO2008019619A1 (fr)

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CN200610104281A CN100589428C (zh) 2006-08-09 2006-08-09 多业务多边缘设备和系统

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CN101621399B (zh) * 2008-06-30 2011-12-07 华为技术有限公司 无源光网络的管理方法、系统及光线路终端
CN101674139B (zh) * 2008-09-09 2014-04-30 华为技术有限公司 一种光网络设备上感知服务提供商的方法、设备和系统
CN101515950B (zh) * 2009-04-09 2011-11-16 杭州华三通信技术有限公司 Wlan子网终端的dhcp实现方法、装置及无线接入客户端
JP5876877B2 (ja) 2010-06-21 2016-03-02 ドイチェ テレコム アクチエンゲゼルシャフトＤｅｕｔｓｃｈｅ Ｔｅｌｅｋｏｍ ＡＧ 電気通信ネットワーク及び電気通信ネットワークと顧客構内機器との間の接続の効率的な使用のための方法及びシステム
US8798077B2 (en) * 2010-12-29 2014-08-05 Juniper Networks, Inc. Methods and apparatus for standard protocol validation mechanisms deployed over a switch fabric system
CN102882699B (zh) * 2011-07-14 2015-07-29 华为技术有限公司 边缘节点的分配方法和装置及边缘节点控制器
CN106161227B (zh) * 2016-06-27 2021-02-12 新华三技术有限公司 一种报文转发方法及装置
CN108966279B (zh) * 2018-08-17 2020-02-18 北京邮电大学 一种基于中心压力边缘化的光载无线接入方法及系统
CN114449377A (zh) * 2020-10-30 2022-05-06 华为技术有限公司 无源光网络的组网方法和装置

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CN1618209A (zh) * 2002-02-08 2005-05-18 艾利森电话股份有限公司 在接入网络中,使用动态分配的mac地址将服务提供商关联于客户的方法及系统
WO2005112370A1 (fr) * 2004-05-18 2005-11-24 Matsushita Electric Industrial Co., Ltd. Système de réseau d'accès et procédé de contrôle de route de données de souscripteur

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CN1321025A (zh) * 1999-12-27 2001-11-07 日本电气株式会社 使用ip－vpn功能的atm边缘节点交换设备
CN1618209A (zh) * 2002-02-08 2005-05-18 艾利森电话股份有限公司 在接入网络中,使用动态分配的mac地址将服务提供商关联于客户的方法及系统
WO2005112370A1 (fr) * 2004-05-18 2005-11-24 Matsushita Electric Industrial Co., Ltd. Système de réseau d'accès et procédé de contrôle de route de données de souscripteur

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