CN108882065B - System and method for realizing IPOA by card-inserted MSAN equipment - Google Patents
System and method for realizing IPOA by card-inserted MSAN equipment Download PDFInfo
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- CN108882065B CN108882065B CN201810289192.0A CN201810289192A CN108882065B CN 108882065 B CN108882065 B CN 108882065B CN 201810289192 A CN201810289192 A CN 201810289192A CN 108882065 B CN108882065 B CN 108882065B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/255—Maintenance or indexing of mapping tables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
Abstract
The invention discloses a system and a method for realizing IPOA (Internet protocol address A) by a card-inserted MSAN (Mobile Internet Access network) device, and relates to the field of card-inserted MSAN devices. The method comprises the following steps: the operator configures the IP address of the BRAS gateway to the card-inserted MSAN equipment, the equipment adopts a master control panel proxy mode to obtain the IP address of the BRAS gateway, the master control panel is used as an IP proxy to initiate an ARP request to obtain the MAC address of the BRAS gateway, and the MAC address and the IP address of the BRAS gateway are issued to all XDSL business single panels; when a user accesses the Internet, an IPOA request message is sent out, the BRAS gateway receives the message, extracts the IP address of the user and sends an ARP request to the user; the main control disk uses the IP address and MAC address distributed to the user by the operator to carry out proxy response, and the BRAS gateway acquires the MAC address and IP address of the user. The invention combines the XDSL service single disk and the main control disk of the card-inserting type MSAN equipment to jointly realize the IPOA function.
Description
Technical Field
The invention relates to the field of card-inserted MSAN equipment, in particular to a system and a method for realizing IPOA by the card-inserted MSAN equipment.
Background
In MSAN (Multi-Service Access Network) communication equipment, a local side device generally takes charge of DSL copper wire Service Access through an XDSL Service single disk, and a master control disk takes charge of aggregation and forwarding of data of each single disk. XDSL is a generic term for various types of DSL (Digital Subscriber Line), including ADSL (Asymmetric Digital Subscriber Line), RADSL (Rate-Adaptive Digital Subscriber Line), VDSL (Very-High-speed Digital Subscriber Line), SDSL (Symmetric Subscriber Line), IDSL (ISDN DSL: integrated services Subscriber Line), HDSL (High-speed Digital Subscriber Line), and the like. The XDSL technology can make full use of the existing PSTN (Public Switched Telephone Network), and can provide high broadband service for users only by adding XDSL devices at both ends of the line, without rewiring, thereby greatly reducing the service cost.
IP is a network interconnection protocol, which is a set of rules for all computer networks connected to the internet to communicate with each other, and specifies rules that computers should follow when communicating over the internet. IP and ATM (Asynchronous Transfer Mode) are different data transmission modes, and ATM is a general connection-oriented transmission Mode designed for multiple services, and divides data into cells of fixed length, and performs switching and forwarding through PVC (Virtual connection). XDSL is an asynchronous transfer mode. The IP is oriented to no connection, and the forwarding of data is realized through an IP address in a data packet header.
IP oa (Internet Protocol Over ATM, which transfers IP packets Over an ATM local area network) establishes a connection, particularly a PVC connection, between ATM terminals using an existing ATM network to perform IP data communication: the IP message payload is loaded on the corresponding Ethernet frame and then loaded in the ATM cell for transmission. IPOA is commonly used for private line access, and meets the transitional requirement from an ATM network to an IP network of an operator.
One key aspect of IPOA is address resolution, which is the completion of address binding. For a PVC, an ATM host knows only the VPI/VCI ID of the PVC, but not the IP address of a remote host, so that the destination IP address and MAC address must be mapped to the VPI/VCI ID of the PVC when packets are transmitted over the PVC.
The card-inserted MSAN equipment generally comprises a service single disk and a master control disk, wherein the service single disk is responsible for accessing various service types, and the master control disk is responsible for forwarding data of each service single disk to a wide area network through the master control disk. For the card-inserted MSAN equipment, if a user selects an IPOA mode, the user terminal equipment only sends IP data packets, and the IP data packets are converted into ATM cells on an XDSL Modem. ATM cells need to be converted into IPOE in an MSAN service single disk, and are communicated on the network through an Ethernet frame format, a frame header of the Ethernet frame format needs a source MAC address and a destination MAC address, and a source IP address and a destination IP address are needed in an IP data packet frame header. The source MAC address and the source IP address are both generally allocated to the user by the operator according to the network plan, and the destination MAC address and the destination IP address are addresses of a BRAS (Broadband Remote Access Server) on the network.
In order to realize the IPOA function of the card-inserted type MSAN equipment, two problems are solved:
(1) how a user acquires a BRAS MAC address and an IP address;
(2) how a BRAS address obtains a user MAC address and an IP address.
Generally, a BRAS has an IP address of a public network, a service single disc of a card-inserted MSAN device has no IP address of the public network, and a routing function needs to be added to the service single disc to obtain the IP address of the BRAS. The service single disk in the card-inserted MSAN equipment generally only has two-layer functions and does not support the routing function, and if the routing function needs to be supported, the hardware cost and the software complexity of the service single disk are increased. On the premise of not increasing new hardware cost, how a service single disk and a master control disk are matched with each other can realize the IPOA function, which is a technical problem to be solved urgently in the field.
Disclosure of Invention
The present invention aims to overcome the defects of the background art, and provides a system and a method for realizing IPOA by a card-inserted type MSAN device, wherein an XDSL service single disk and a main control disk of the card-inserted type MSAN device are organically combined and mutually matched to realize the IPOA function of a user together on the premise of not increasing new hardware cost.
The invention provides a system for realizing IPOA by a card-inserted type MSAN device, which comprises a broadband remote access server BRAS gateway and a card-inserted type integrated service access network MSAN device,
an operator configures the IP address of the BRAS gateway to a card-inserted MSAN device, the card-inserted MSAN device adopts a master control panel proxy mode, the master control panel acquires the IP address of the BRAS gateway, the master control panel serves as an IP proxy, an ARP (address resolution protocol) request is initiated, the MAC address of the BRAS gateway is acquired, the master control panel maintains an ARP table of the BRAS gateway, and the acquired MAC address and IP address of the BRAS gateway are issued to all XDSL service single panels;
an operator configures an IP address and an MAC address for each user on the card-inserted MSAN equipment, and when the user accesses the Internet, the user sends an IPOA request message, wherein IPOA refers to transmitting an IP data packet on an ATM local area network; after receiving the IPOA request message, the upstream BRAS gateway extracts the IP address of the user, and the BRAS gateway sends an ARP request to the user according to the IP address of the user; the main control disk uses the IP address and MAC address allocated to the user by the operator to carry out proxy response, and the upstream BRAS gateway learns the MAC address and IP address allocated to the user by the operator, so that the direct communication between the BRAS gateway and the user is realized.
On the basis of the technical scheme, the process of acquiring the MAC address of the BRAS gateway comprises the following steps:
the master control disk agent of the card-inserted MSAN equipment sends an ARP request to the BRAS gateway, the BRAS gateway responds to the ARP request of the master control disk of the card-inserted MSAN equipment after receiving the ARP request, the MAC address of the BRAS gateway is issued, and the master control disk of the card-inserted MSAN equipment acquires the MAC address of the BRAS gateway.
On the basis of the technical scheme, the process of issuing the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks comprises the following steps:
and the main control disk of the card-inserted MSAN equipment issues the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks, the XDSL service single disks write the received information into a hardware interface, and the XDSL service single disks respond to an actual operation result.
On the basis of the technical scheme, the process that the master control disk maintains the ARP table of the BRAS gateway comprises the following steps:
and the master control disk of the card-inserted MSAN equipment intermittently sends an ARP request and dynamically maintains an ARP table of the BRAS gateway.
On the basis of the technical scheme, when the user accesses the internet, the IPOA request message is sent out, and the specific process is as follows:
when a user accesses the Internet, a Modem Modem of an IPOA mode sends out an IPOA request message and encapsulates the IPOA request message in an ATM cell, an XDSL service single disc firstly terminates the ATM cell, an IP data packet is restored, the IPOA request message is converted into an Internet control message protocol ICMP message, the used address is a source address and a destination address which are configured to the XDSL service single disc by a main control disc of a card-inserting type MSAN device, the source address is the IP address and the MAC address of the user, the destination address is the MAC address and the IP address of a BRAS gateway, and the main control disc sends the ICMP message to the BRAS gateway.
The invention also provides a method for realizing IPOA by the card-inserted MSAN equipment, which comprises the following steps:
an operator configures an IP address of a BRAS gateway of a broadband remote access server to MSAN equipment of a card-inserted type integrated service access network, the MSAN equipment of the card-inserted type adopts a master control panel proxy mode, the master control panel acquires the IP address of the BRAS gateway and serves as an IP proxy, an ARP request is initiated to acquire the MAC address of the BRAS gateway, the master control panel maintains an ARP table of the BRAS gateway and issues the acquired MAC address and the IP address of the BRAS gateway to all XDSL service single panels;
an operator configures an IP address and an MAC address for each user on the card-inserted MSAN equipment, and when the user accesses the Internet, the user sends an IPOA request message, wherein IPOA refers to transmitting an IP data packet on an ATM local area network; after receiving the IPOA request message, the upstream BRAS gateway extracts the IP address of the user, and the BRAS gateway sends an ARP request to the user according to the IP address of the user; the main control disk uses the IP address and MAC address allocated to the user by the operator to carry out proxy response, and the upstream BRAS gateway learns the MAC address and IP address allocated to the user by the operator, so that the direct communication between the BRAS gateway and the user is realized.
On the basis of the technical scheme, the process of acquiring the MAC address of the BRAS gateway comprises the following steps:
the master control disk agent of the card-inserted MSAN equipment sends an ARP request to the BRAS gateway, the BRAS gateway responds to the ARP request of the master control disk of the card-inserted MSAN equipment after receiving the ARP request, the MAC address of the BRAS gateway is issued, and the master control disk of the card-inserted MSAN equipment acquires the MAC address of the BRAS gateway.
On the basis of the technical scheme, the process of issuing the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks comprises the following steps:
and the main control disk of the card-inserted MSAN equipment issues the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks, the XDSL service single disks write the received information into a hardware interface, and the XDSL service single disks respond to an actual operation result.
On the basis of the technical scheme, the process that the master control disk maintains the ARP table of the BRAS gateway comprises the following steps:
and the master control disk of the card-inserted MSAN equipment intermittently sends an ARP request and dynamically maintains an ARP table of the BRAS gateway.
On the basis of the technical scheme, when the user accesses the internet, the IPOA request message is sent out, and the specific process is as follows:
when a user accesses the Internet, a Modem Modem of an IPOA mode sends out an IPOA request message and encapsulates the IPOA request message in an ATM cell, an XDSL service single disc firstly terminates the ATM cell, an IP data packet is restored, the IPOA request message is converted into an Internet control message protocol ICMP message, the used address is a source address and a destination address which are configured to the XDSL service single disc by a main control disc of a card-inserting type MSAN device, the source address is the IP address and the MAC address of the user, the destination address is the MAC address and the IP address of a BRAS gateway, and the main control disc sends the ICMP message to the BRAS gateway.
Compared with the prior art, the invention has the following advantages:
(1) an operator configures an IP address of a BRAS gateway of a broadband remote access server to MSAN equipment of a card-inserted type integrated service access network, the MSAN equipment of the card-inserted type adopts a master control panel proxy mode, the master control panel acquires the IP address of the BRAS gateway and serves as an IP proxy, an ARP request is initiated to acquire the MAC address of the BRAS gateway, the master control panel maintains an ARP table of the BRAS gateway and issues the acquired MAC address and the IP address of the BRAS gateway to all XDSL service single panels;
an operator configures an IP address and an MAC address for each user on the card-inserted MSAN equipment, and when the user accesses the Internet, the user sends an IPOA request message, wherein IPOA refers to transmitting an IP data packet on an ATM local area network; after receiving the IPOA request message, the upstream BRAS gateway extracts the IP address of the user, and the BRAS gateway sends an ARP request to the user according to the IP address of the user; the main control disk uses the IP address and MAC address allocated to the user by the operator to carry out proxy response, and the upstream BRAS gateway learns the MAC address and IP address allocated to the user by the operator, so that the direct communication between the BRAS gateway and the user is realized.
The invention organically combines the XDSL service single disk and the main control disk of the card-inserting type MSAN equipment under the premise of not increasing new hardware cost, and mutually cooperates to realize the IPOA function of a user together. The XDSL service single disk hardware does not need to increase chip cost, and the XDSL service single disk mainly completes ATM cell analysis and IPOA function after converting ATM cells into IP data packets.
(2) The XDSL service single disk software is simple and does not need a 3-layer routing function.
(3) The main control panel only needs to add the proxy response function of the gateway, and the software is relatively simple.
(4) The configuration operation is simple, and the maintenance is convenient.
Drawings
Fig. 1 is a networking schematic diagram of a card-inserted MSAN device.
FIG. 2 is a flow chart of the configuration of IPOA in the embodiment of the present invention.
Fig. 3 is a business flow diagram of IPOA in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Example 1
The embodiment 1 of the present invention provides a system for implementing IPOA by a card-inserted MSAN device, where the system includes a broadband remote access server BRAS gateway and a card-inserted integrated service access network MSAN device, and as shown in fig. 1, the networking of the card-inserted MSAN device includes:
BRAS Server: the BRAS gateway server is responsible for IPOA user authentication and protocol processing;
NMS (Network Management System ): MSAN equipment network management server, responsible for MSAN equipment configuration management.
MSAN: and (3) card-inserting type DSL local side equipment.
Modem: a DSL customer premises equipment.
PC: a user's home computer.
An operator configures the IP Address of a BRAS gateway to a card-inserted MSAN device, the card-inserted MSAN device adopts a master control disk proxy mode, the master control disk acquires the IP Address of the BRAS gateway and serves as an IP proxy, an ARP (Address resolution Protocol) request is initiated to acquire the MAC Address of the BRAS gateway, the master control disk maintains an ARP table of the BRAS gateway, and the acquired MAC Address and IP Address of the BRAS gateway are issued to all XDSL service disks;
an operator configures an IP address and an MAC address for each user on the card-inserted MSAN equipment, and when the user accesses the Internet, the user sends an IPOA request message, wherein IPOA refers to transmitting an IP data packet on an ATM local area network; after receiving the IPOA request message, the upstream BRAS gateway extracts the IP address of the user, and the BRAS gateway sends an ARP request to the user according to the IP address of the user; the main control disk uses the IP address and MAC address allocated to the user by the operator to carry out proxy response, and the upstream BRAS gateway learns the MAC address and IP address allocated to the user by the operator, so that the direct communication between the BRAS gateway and the user is realized.
Example 2
The embodiment 2 of the invention provides a method for realizing IPOA by a card-inserted type MSAN device, which comprises the following steps:
an operator configures an IP address of a BRAS gateway of a broadband remote access server to MSAN equipment of a card-inserted type integrated service access network, the MSAN equipment of the card-inserted type adopts a master control panel proxy mode, the master control panel acquires the IP address of the BRAS gateway and serves as an IP proxy, an ARP request is initiated to acquire the MAC address of the BRAS gateway, the master control panel maintains an ARP table of the BRAS gateway and issues the acquired MAC address and the IP address of the BRAS gateway to all XDSL service single panels;
an operator configures an IP address and an MAC address for each user on the card-inserted MSAN equipment, and when the user accesses the Internet, the user sends an IPOA request message, wherein IPOA refers to transmitting an IP data packet on an ATM local area network; after receiving the IPOA request message, the upstream BRAS gateway extracts the IP address of the user, and the BRAS gateway sends an ARP request to the user according to the IP address of the user; the main control disk uses the IP address and MAC address allocated to the user by the operator to carry out proxy response, and the upstream BRAS gateway learns the MAC address and IP address allocated to the user by the operator, so that the direct communication between the BRAS gateway and the user is realized.
Referring to fig. 2, the configuration flow of IPOA is as follows:
the network management server configures the mapping table items of the user source IP address and the MAC address corresponding to the PVC, a main control disk of the card-inserted MSAN equipment is responsible for receiving the configuration information of the network management server, the main control disk issues the relevant configuration information to an XDSL service single disk, the XDSL service single disk writes the received configuration information into a hardware interface, and the XDSL service single disk responds to the actual operation result.
Example 3
On the basis of the embodiment 1 or 2, the process of acquiring the MAC address of the BRAS gateway is as follows:
the master control disk agent of the card-inserted MSAN equipment sends an ARP request to the BRAS gateway, the BRAS gateway responds to the ARP request of the master control disk of the card-inserted MSAN equipment after receiving the ARP request, the MAC address of the BRAS gateway is issued, and the master control disk of the card-inserted MSAN equipment acquires the MAC address of the BRAS gateway.
Example 4
On the basis of the embodiment 1 or 2, the process of issuing the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks is as follows:
and the main control disk of the card-inserted MSAN equipment issues the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks, the XDSL service single disks write the received information into a hardware interface, and the XDSL service single disks respond to an actual operation result.
Example 5
On the basis of the embodiment 1 or 2, the process that the master control disk maintains the ARP table of the BRAS gateway is as follows:
and the master control disk of the card-inserted MSAN equipment intermittently sends an ARP request and dynamically maintains an ARP table of the BRAS gateway.
Example 6
On the basis of the embodiment 1 or 2, when the user accesses the internet, the user sends out an IPOA request message, and the specific process is as follows:
when a user accesses the Internet, the Modem Modem of the IPOA mode sends out an IPOA request message and encapsulates the IPOA request message in an ATM cell, an XDSL service single disc firstly terminates the ATM cell, an IP data packet is restored, the IPOA request message is converted into an Internet control message protocol ICMP message, the used address is the source address (the IP address and the MAC address of the user) and the destination address (the MAC address and the IP address of a BRAS gateway) which are configured to the XDSL service single disc by a main control disc of the card-inserted type MSAN equipment, and the main control disc sends the ICMP message to the BRAS gateway.
The principle of the embodiment of the invention is elaborated as follows:
referring to fig. 3, the business flow of IPOA is as follows:
1. before the service is opened, the following operations are required:
an operator configures the internet access mode of a user to be IPOA;
an operator configures the IP address of the BRAS gateway to the card-inserted MSAN local side equipment, and only the IP address needs to be configured;
the operator uniformly allocates the IP address and the MAC address of the user.
2. The master control disk agent obtains the MAC address of the BRAS gateway:
the main control disk agent sends an ARP request to the BRAS gateway, after receiving the request message, the BRAS gateway responds to the ARP request of the main control disk of the card-inserted MSAN equipment and issues an MAC address of the BRAS gateway, and the main control disk of the card-inserted MSAN equipment acquires the MAC address of the BRAS gateway.
3. The main control configuration issues a line card:
the master control distributes the user IP address and the MAC address which are uniformly distributed by an operator to the line card, distributes the IP address and the MAC address of the BRAS gateway to the line card, and writes the received information into a hardware drive register by the line card.
4. The user initiates an IPOA communication request:
the user initiates an IPOA request, the main control panel transmits a request message to the BRAS gateway, the BRAS gateway sends an ARP request to the user after receiving the IPOA request, and the main control panel agent responds to the ARP request of the BRAS gateway.
The embodiment of the invention adopts a master control panel proxy mode to obtain the MAC address and the IP address of the BRAS gateway, and the proxy user responds to the ARP request message sent by the BRAS gateway to the user. Therefore, even if the user acquires the IP address and the MAC address of the BRAS gateway, the BRAS gateway also acquires the IP address and the MAC address of the user. The card-inserted MSAN equipment is used as independent network element equipment on a network, the master control disk has a public network IP address, and the master control disk can directly acquire the MAC address and the IP address of the BRAS gateway without adding a routing function. And the master control disk performs centralized processing, and issues the obtained MAC address and IP address of the BRAS gateway to all the service single disks.
The following takes MSAN integrated access to the local side device as an example, and specifically describes:
when a user opens a service, an operator allocates an IP address and an MAC address for an IPOA user according to the requirement of network planning, wherein the IP address configuration mode is as follows: the Modem is set to routing mode, encapsulated in RFC1843 format, and configured with a static IP address, which serves as the user's source IP address.
The MAC address configuration mode is as follows: IPOA users have no MAC address, and the central office needs to allocate a MAC address to each PVC, and the MAC address is used as the source MAC address of the users. Configuration, management and maintenance are carried out in a mode of an MAC address pool. The addresses in the MAC address pool support the recovery function, and the addresses which are not used by the user are recovered to other users for use. The MAC address pool does not allow modification, only addition and deletion. The MAC address is not allowed to contain a MAC address inside the system (e.g., bridge MAC address, inter-board communication MAC address). MAC addresses in different MAC address pools cannot overlap each other.
The user port starts IPOA mode to surf the internet, an operator configures the address of an upstream BRAS gateway in a main control panel of MSAN integrated access local side equipment, the main control panel is used as an IP proxy to initiate an ARP request to obtain the MAC address and the IP address of the BRAS gateway, the MAC address and the IP address are stored and are issued to an XDSL service single panel, in order to avoid the address change of the BRAS gateway, the main control panel needs to send the ARP request discontinuously, an ARP table of the BRAS gateway is maintained dynamically, and the main control panel issues the IP address and the MAC address of the BRAS gateway to the XDSL service single panel to be used as a target IP address and a target MAC address in an Ethernet frame format.
When a user opens a service, an operator needs to select an internet access mode of a user port. The main control disk configures PVC message type for PVC of each port, if it is IPOA mode, according to operator plan, configuring unique IP address for PVC of each user port for different XDSL service single disks, the IP address is the same as static IP of Modem. The master control disk allocates a certain MAC address in the MAC address pool to the PVC of the port of the line card, and issues the IP allocated by the PVC and the corresponding MAC address to the XDSL service single disk as a source IP address and a source MAC address;
the BRAS gateway sends ARP request to the user address only after receiving the IPOA request message. Only after the protocol interaction is finished, the BRAS gateway and the user can formally realize the internet surfing process after the BRAS gateway and the user mutually obtain the address of the other party.
When a user accesses the Internet, an IPOA mode Modem sends out an IPOA request Message and encapsulates the IPOA request Message in an ATM cell, an XDSL service single disc firstly terminates the ATM cell, an IP data packet is restored, the IPOA request Message is converted into an ICMP (Internet Control Message Protocol) Message, related addresses are a user source address (an IP address and an MAC address of the user) and a destination address (an MAC address and an IP address of a BRAS gateway) which are configured to the XDSL service single disc by the upper main Control disc, the user source address and the destination address are sent to the BRAS gateway through the main Control disc, the BRAS gateway sends an ARP request to the main Control disc after receiving the Message, the main Control disc responds to the ARP request of the BRAS gateway, and the response Message source address is a source address (the IP address and the MAC address of the user) distributed to the XDSL service single disc. After receiving the proxy response message, the upstream BRAS gateway learns the IP address and the MAC address of the user, thereby realizing direct communication between the BRAS gateway and the user.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (8)
1. A system for realizing IPOA by a card-inserted MSAN device is characterized in that: the system comprises a broadband remote access server BRAS gateway and a card-inserted integrated service access network MSAN device,
an operator configures the IP address of the BRAS gateway to a card-inserted MSAN device, the card-inserted MSAN device adopts a master control panel proxy mode, the master control panel acquires the IP address of the BRAS gateway, the master control panel serves as an IP proxy, an ARP (address resolution protocol) request is initiated, the MAC address of the BRAS gateway is acquired, the master control panel maintains an ARP table of the BRAS gateway, and the acquired MAC address and IP address of the BRAS gateway are issued to all XDSL service single panels;
the operator configures IP address and MAC address for each user on the card-inserted MSAN device, when the user accesses the network, the user sends out IPOA request message: IPOA means that IP data packets are transmitted on an ATM local area network, when a user surfs the Internet, a Modem Modem of the IPOA mode sends out an IPOA request message and encapsulates the IPOA request message in an ATM cell, an XDSL service single disc firstly terminates the ATM cell, restores the IP data packets and converts the IPOA request message into an Internet control message protocol ICMP message, the used address is a source address and a destination address which are configured to the XDSL service single disc by a main control disc of a card-inserting type MSAN device, the source address is an IP address and an MAC address of the user, the destination address is an MAC address and an IP address of a BRAS gateway, and the main control disc sends the ICMP message to the BRAS gateway;
after receiving the IPOA request message, the upstream BRAS gateway extracts the IP address of the user, and the BRAS gateway sends an ARP request to the user according to the IP address of the user; the main control disk uses the IP address and MAC address allocated to the user by the operator to carry out proxy response, and the upstream BRAS gateway learns the MAC address and IP address allocated to the user by the operator, so that the direct communication between the BRAS gateway and the user is realized.
2. The system for implementing IPOA for a card-inserted MSAN device as recited in claim 1, wherein: the process of obtaining the MAC address of the BRAS gateway comprises the following steps:
the master control disk agent of the card-inserted MSAN equipment sends an ARP request to the BRAS gateway, the BRAS gateway responds to the ARP request of the master control disk of the card-inserted MSAN equipment after receiving the ARP request, the MAC address of the BRAS gateway is issued, and the master control disk of the card-inserted MSAN equipment acquires the MAC address of the BRAS gateway.
3. The system for implementing IPOA for a card-inserted MSAN device as recited in claim 1, wherein: the process of issuing the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks is as follows:
and the main control disk of the card-inserted MSAN equipment issues the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks, the XDSL service single disks write the received information into a hardware interface, and the XDSL service single disks respond to an actual operation result.
4. The system for implementing IPOA for a card-inserted MSAN device as recited in claim 1, wherein: the process of maintaining the ARP table of the BRAS gateway by the master control disk comprises the following steps:
and the master control disk of the card-inserted MSAN equipment intermittently sends an ARP request and dynamically maintains an ARP table of the BRAS gateway.
5. A method for realizing IPOA by a card-inserted MSAN device is characterized by comprising the following steps:
an operator configures an IP address of a BRAS gateway of a broadband remote access server to MSAN equipment of a card-inserted type integrated service access network, the MSAN equipment of the card-inserted type adopts a master control panel proxy mode, the master control panel acquires the IP address of the BRAS gateway and serves as an IP proxy, an ARP request is initiated to acquire the MAC address of the BRAS gateway, the master control panel maintains an ARP table of the BRAS gateway and issues the acquired MAC address and the IP address of the BRAS gateway to all XDSL service single panels;
the operator configures IP address and MAC address for each user on the card-inserted MSAN device, when the user accesses the network, the user sends out IPOA request message: IPOA means that IP data packets are transmitted on an ATM local area network, when a user surfs the Internet, a Modem Modem of the IPOA mode sends out an IPOA request message and encapsulates the IPOA request message in an ATM cell, an XDSL service single disc firstly terminates the ATM cell, restores the IP data packets and converts the IPOA request message into an Internet control message protocol ICMP message, the used address is a source address and a destination address which are configured to the XDSL service single disc by a main control disc of a card-inserting type MSAN device, the source address is an IP address and an MAC address of the user, the destination address is an MAC address and an IP address of a BRAS gateway, and the main control disc sends the ICMP message to the BRAS gateway;
after receiving the IPOA request message, the upstream BRAS gateway extracts the IP address of the user, and the BRAS gateway sends an ARP request to the user according to the IP address of the user; the main control disk uses the IP address and MAC address allocated to the user by the operator to carry out proxy response, and the upstream BRAS gateway learns the MAC address and IP address allocated to the user by the operator, so that the direct communication between the BRAS gateway and the user is realized.
6. The method for implementing IPOA of a card-inserted MSAN device as recited in claim 5, wherein: the process of obtaining the MAC address of the BRAS gateway comprises the following steps:
the master control disk agent of the card-inserted MSAN equipment sends an ARP request to the BRAS gateway, the BRAS gateway responds to the ARP request of the master control disk of the card-inserted MSAN equipment after receiving the ARP request, the MAC address of the BRAS gateway is issued, and the master control disk of the card-inserted MSAN equipment acquires the MAC address of the BRAS gateway.
7. The method for implementing IPOA of a card-inserted MSAN device as recited in claim 5, wherein: the process of issuing the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks is as follows:
and the main control disk of the card-inserted MSAN equipment issues the acquired MAC address and IP address of the BRAS gateway to all XDSL service single disks, the XDSL service single disks write the received information into a hardware interface, and the XDSL service single disks respond to an actual operation result.
8. The method for implementing IPOA of a card-inserted MSAN device as recited in claim 5, wherein: the process of maintaining the ARP table of the BRAS gateway by the master control disk comprises the following steps:
and the master control disk of the card-inserted MSAN equipment intermittently sends an ARP request and dynamically maintains an ARP table of the BRAS gateway.
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| CN103227787A (en) * | 2013-04-09 | 2013-07-31 | 清华大学 | Automatic 4over6 tunnel establishment method based on ARP proxy |
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| CN107124242A (en) * | 2017-05-16 | 2017-09-01 | 广东九博科技股份有限公司 | A kind of MSAP access multiservice platforms |
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| CN103227787A (en) * | 2013-04-09 | 2013-07-31 | 清华大学 | Automatic 4over6 tunnel establishment method based on ARP proxy |
| CN205283667U (en) * | 2016-01-15 | 2016-06-01 | 成都智扬易方软件有限公司 | Integrated service access network system based on IP kernel |
| CN107124242A (en) * | 2017-05-16 | 2017-09-01 | 广东九博科技股份有限公司 | A kind of MSAP access multiservice platforms |
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