CN101820401B - Edge gateway equipment used for IP telecom network system and implementation method thereof - Google Patents
Edge gateway equipment used for IP telecom network system and implementation method thereof Download PDFInfo
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Abstract
The invention provides an edge gateway equipment used for an IP telecom network system, and also provides a method for realizing message processing of the edge gateway equipment. The edge gateway equipment comprises a multilayer switch, a packet coprocessor and a microprocessor, wherein the multilayer switch is provided with a network interface used for connecting an IP network and a complex address connectionless data network; the packet coprocessor is connected with the multilayer switch, exchanges data, and converts data message formats; and the microprocessor is connected with the multilayer switch and the packet coprocessor, and configures and controls the multilayer switch and the packet coprocessor. The edge gateway equipment is implemented by using the method, so that the method reduces design work, provides all characteristics of the edge gateway equipment and has good expandability.
Description
Technical field
The present invention relates to a kind of edge gateway equipment that is used for the IP Telecommunication Network system, also relate to the method that this edge gateway equipment realizes that message is handled simultaneously, belong to the telecommunication technology field.
Background technology
The IP Telecommunication Network system is that the inventor is the new ideas that propose in the patent of invention of ZL 200410037641.0 in the patent No..It adopts unique interior outer double-layer structure and double address addressing system, is not had connection data network (abbreviating the PTDN net as) and is positioned at outer field a plurality of IP network by at least one the multiple location that is positioned at internal layer and form, and also comprises a plurality of edge gateway equipments.IP network does not have the data network of connection through the multiple location of edge gateway equipment and this and is connected.Each multiple location does not have to connect in the data network and also comprises at least one address mapping device; Edge gateway equipment is accomplished the mapping between double address through address mapping device.Multiple location does not have all devices that connects in the data network and edge gateway equipment and all is assigned one and answers the location and do not have the data of connection net address; All devices in the IP network and above-mentioned edge gateway equipment all are assigned the IP address; IP address and multiple location do not have the mapping relations that connect between the data net address and are kept among the address mapping table in the address mapping device, connect between authenticated back of edge gateway equipment and the address mapping device.Do not have the data network of connection inside in multiple location and also have network management device, this network management device is managed multiple location does not simultaneously have access layer equipment, convergence-level equipment and the core layer equipment that connects in the data network.
In the IP Telecommunication Network system; Send out to the IP of destination address end bag from the source address end and to transmit: at first through following mode; The edge gateway equipment (abbreviating ED equipment as) that is positioned at the source address end receives the IP grouping from IP network, and the IP destination address in the IP grouping is delivered to address mapping device (abbreviating ADT equipment as); The IP destination address that address mapping device carries out IP network does not have address resolution and the mapping that is connected between the data net address with multiple location, gives source address end margin gateway device with the data network address loopback of the destination address end margin gateway device that obtains; Source address end margin gateway device does not have the data of connection net address according to multiple location and sends message to destination address end margin gateway device; Destination address end margin gateway device receives message, E-Packets to IP network according to purpose IP address, thereby makes the final destination address end that arrives of IP grouping.
In a series of patent applications that the inventor proposes with regard to the IP Telecommunication Network technology; With regard to the basic framework of IP Telecommunication Network system and realize method for communicating, realize the method for carrying out resource management method in the method, IP Telecommunication Network system of VPN and multicast functionality, the grouping that wherein transmits being carried out header-compressed based on the IP Telecommunication Network system; And a series of problems such as specific packet format that in the IP Telecommunication Network system, transmits and realization mechanism thereof have carried out detailed explanation, this with regard to not quite clear describe in detail clear.
But, the edge gateway equipment in the IP Telecommunication Network system itself is not carried out brightly specifically in the above-mentioned prior art, this edge gateway equipment is not realized that the concrete grammar that message is handled describes yet.
Summary of the invention
Main purpose of the present invention provides a kind of edge gateway equipment that is used for the IP Telecommunication Network system.This edge gateway equipment is the nucleus equipment in the network, for the IP bearer network of realizing based on the IP Telecommunication Network system of new generation has been established technical basis.
Another object of the present invention provides the concrete grammar that above-mentioned edge gateway equipment realizes that message is handled.
For realizing above-mentioned goal of the invention, the present invention adopts following technical scheme:
A kind of edge gateway equipment that is used for the IP Telecommunication Network system is characterized in that this equipment comprises:
Multilayer switch, it has and is used to connect IP network and does not have the network interface that is connected data network with multiple location;
The bag coprocessor, it is connected with said multilayer switch and swap data, and the data message format is changed; And,
Microprocessor, it is connected with said bag coprocessor with said multilayer switch, and said multilayer switch and said bag coprocessor are configured and control.
The edge gateway equipment of a kind of IP Telecommunication Network system is realized the method that message is handled, and it is characterized in that:
When message when IP network gets into the PTDN net; The message information relevant in the message that the multilayer switch inspection receives with route; Then, the IP network that receives is sent to the bag coprocessor to the message that PTDN nets, the IP message format is converted into the message format of PTDN net and sends to multilayer switch by the bag coprocessor; Multilayer switch is to the two layers of exchange of PTDN network packet execution from the bag coprocessor, and the PTDN network packet after will changing sends to the respective nodes in the PTDN net;
When message when the PTDN network gets into IP network; Multilayer switch directly sends to the bag coprocessor with message; Carry out of the conversion of PTDN network packet by the bag coprocessor, and the message after will change sends it back multilayer switch, pass through the corresponding IP node of multilayer switch entering IP network at last to the IP message.
Realize ED equipment through said method, not only reduced design work, IP Telecommunication Network ED can also be provided the complete characteristic of equipment, and be with good expansibility.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is the logical construction sketch map of edge gateway equipment provided by the present invention;
Fig. 2 is the physical structure sketch map of edge gateway equipment provided by the present invention;
Fig. 3 is that message flow in the edge gateway equipment shown in Figure 2 is to sketch map.
Embodiment
Edge gateway equipment provided by the present invention is one of nucleus equipment in the IP Telecommunication Network system.This equipment is called for short ED equipment, is used to handle the packet of I/O, carries out the outer net address of data packet header part and the conversion between the interior net address; Cluster is carried out in IP address to being administered, with IP network address and multiple location do not have be connected the data net address relation to uploading in the ADT equipment; Come the configuration data plane according to service authorization.Launch detailed explanation in the face of the concrete composition and the operation principle of this edge gateway equipment down.
Referring to shown in Figure 1; The edge gateway equipment that is used for IP Telecommunication Network is made up of central processing module, communication resource configuration module, communication resource management and control module, packet reception/sending module, packet header processing module, network management interface module, power module, DBM etc.; Wherein, Central processing module is the critical function module that whole ED equipment is managed and controlled, and this central processing module is connected with DBM with remaining communication resource configuration module, communication resource management and control module, packet reception/sending module, packet header processing module, network management interface module, power module respectively.The interface of the conduct of packet reception/sending module and outside telecommunications network is responsible for receiving and sending packet.The network management interface module then be responsible for the IP Telecommunication Network system in the interface of network management device.The packet header processing module is connected with packet reception/sending module, is used to realize the processing to the data packet head.Communication resource management and control module are the functional modules that is used to implement resource management and control.This module is connected with packet reception/sending module, to realize the management to the communication resource through the control to packet reception/transmission.Edge gateway equipment utilizes communication resource management and control module to realize management and control to this device network resource.This function is one of major function of edge gateway equipment.Edge gateway equipment is grasped the whole resources and the configuration thereof of this equipment, and own resources are had complete control and management capability.Communication resource configuration module is connected with control module with communication resource management, so that realize pre-configured to the network service resource.Concrete grammar about this communication resource configuration module configures communication resource hereinafter also will have detailed explanation.
In the IP Telecommunication Network system, edge gateway equipment comprises layer network exchange (hereinafter to be referred as multilayer switch), general commercial microprocessor and the customizable bag coprocessor of finished productization (off-the-shelf).Multilayer switch provides network throughput and user's application interface of all standards, thereby can significantly reduce the design work amount to all existing network processes characteristics of ED equipment.The bag coprocessor is used to realize ED equipment particular functionality and demand, and especially IP network and multiple location do not have the processing that the message format that is connected data network is changed.In addition, use general purpose microprocessor to come configuring multi-layer switch and bag coprocessor.
Carry out the specific processing of ED equipment from compiling (aggregated) entering bag coprocessor after the multilayer switch IP port or the network processes of message through the multilayer switch internal standard of multilayer switch PTDN net port.
With reference to figure 2; ED equipment comprises IP network interface and two kinds of physical interfaces of PTDN network interface; Both had functions such as standard route, bandwidth control, current control, multicast replication and statistical technique; The specific function that also has IP Telecommunication Network is handled or the like like protocol conversion, address translation inquiry and parsing and address registration.This multilayer switch connects this IP network interface and PTDN network interface, and is connected with microprocessor through EBI (being pci interface in the present embodiment), is connected with the bag coprocessor through high-speed data port (being the 10GbE port in the present embodiment).This multilayer switch (but being not limited to) is at least supported two layers of exchange and three-layer network disposal ability, comprises two layers of function of exchange, three layers of function that routing function, bandwidth control, priority conversion and/or distribution, multicast replication, network statistics counter and other standard networks are handled.This multilayer switch is through high-speed data port and bag coprocessor exchanging network data.All can not pass through the high-speed interface between multilayer switch and the bag coprocessor because IP network and multiple location have the all-network data message that connects between data network, the bandwidth of this high-speed interface must approximate the aggregate bandwidth of all IP networks on the multilayer switch/PTDN net port.
The bag coprocessor is the critical component of edge gateway equipment, mainly accomplishes peculiar function relevant with the PTDN network in the edge gateway equipment, this just the difference of edge gateway equipment and general commercial switch belong to.These functions comprise that be the purpose message format with message from the source messages format conversion.And for accomplishing format conversion; The bag coprocessor also assists to create the address lookup request; Processing safeguards that from the address resolution response of address mapping device IP network is to IP Telecommunication Network address translation template table and other multilayer switch unsupported ED equipment particular functionality or demand.The bag coprocessor has local IP network to PTDN net address translation template table.Static as required this table of initial setting up or this table left a blank when microprocessor can edge gateway device starts.The bag coprocessor uses the local IP network of its purpose IP address lookup to PTDN net address translation template table when receiving the IP message.If any the list item that conforms to, the bag coprocessor converts the IP message format into the PTDN message format and sends.Like the nothing list item that conforms to, the bag coprocessor inserts local address inquiry waiting list with this message.The bag coprocessor is created the address lookup request according to this message IP destination address simultaneously; And be sent to address lookup equipment through multilayer switch.Address lookup equipment is replied address lookup and is beamed back through multilayer switch.The bag coprocessor is handled the address lookup answer and is upgraded local IP network in view of the above to PTDN net address translation template table.The bag coprocessor is also deleted former IP message from the address lookup waiting list; Convert its IP message format into PTDN message format and transmission.The bag coprocessor can be any custom integrated circuit, can be by field programmable gate array (FPGA), and programmable logic device (PLD), perhaps application-specific integrated circuit (ASIC) (ASIC) is realized.
The configuration and the program of general purpose microprocessor control multilayer switch.Microprocessor also is responsible for the configuration of this equipment (host) user application and controlling packet coprocessor.Microprocessor can be any general microprocessor.This microprocessor is connected with the bag coprocessor through pci interface, and the bag coprocessor is controlled.Microprocessor also can come the controlling packet coprocessor with custom-designed message through multilayer switch.
As shown in Figure 2, the node device of the node device of IP network and PTDN net can also can be connected in the multilayer switch through high-speed port (like the 10GbE port in the present embodiment) through low-speed port (like the GbE port in the present embodiment).The flow direction of key messages such as IP Telecommunication Network address resolution and management is described for ease, in Fig. 2, is listed address mapping device interface and network management interface (NM) in the IP Telecommunication Network in the edge gateway equipment separately.When concrete the realization, not necessarily have independently physical interface, generally the PTDN of ED equipment net side interface has been contained this part interface.
Shown in the chain-dotted line among Fig. 3, when former IP message is certain IP node from IP network when getting into PTDN net, these messages are high-speed port or the low-speed port through being connected with multilayer switch at first, the entering multilayer switch.In multilayer switch, the message information relevant with route in the message that receives through inspection like source IP address and purpose IP address, but judge whether route of message, and/or whether the inspection message belongs to multicast or VPN passage.Multilayer switch also will be carried out bandwidth control and/or heavy assignment message priority.Then, the message of net from the IP network to PTDN that multilayer switch receives, by multilayer switch be pooled to high-speed port (in Fig. 3, be shown as multilayer switch and bag between the coprocessor above high-speed port), get into and wrap coprocessor.The bag coprocessor carries out the message address inquiry, and converts the IP message format into PTDN network packet form, afterwards, sends the PTDN network packet through aforementioned high-speed port and gives multilayer switch.Multilayer switch is to the two layers of exchange of PTDN network packet execution from the bag coprocessor, and the PTDN network packet after will changing sends to the respective nodes in the PTDN net through the port that is attached thereto.Like this, ED equipment is accomplished a message conversion and transmission.
Shown in the dotted line among Fig. 3, when message be from the PTDN net come out, when going to IP network, former PTDN network packet enters into multilayer switch from certain IP Telecommunication Network node through high-speed port or the low-speed port that is connected with multilayer switch.Multilayer switch through high-speed port (in Fig. 3, be shown as multilayer switch and bag between the coprocessor below high-speed port) former PTDN network packet is directly sent to the bag coprocessor.The bag coprocessor is carried out the conversion from the PTDN network packet to the IP message to former PTDN network packet.Message after the conversion is wrapped coprocessor through aforementioned high-speed port and is sent it back multilayer switch, and gets into the corresponding IP node of IP network through multilayer switch.
The processing mode of ED equipment provided by the present invention to the data message has been described above.Except above-mentioned data message; Also mutual exchange of management/control message between multilayer switch, bag coprocessor and the microprocessor of ED equipment; For example address translation inquiry/parsing, address registration, from the administrative message of webmaster, and self-defining bag coprocessor configuration message etc.Equally with reference to figure 3; Shown in the solid line among the figure; Address lookup/analytic message and logon message pass through multilayer switch; Between address mapping device interface and bag coprocessor, exchange, handle according to the address translation template table between IP network and the PTDN net by the bag coprocessor, and send address mapping device to; Webmaster messages such as OAM (operation, administration and management), Ping exchange between network management interface and microprocessor through multilayer switch; Bag coprocessor configuration message exchanges between bag coprocessor and microprocessor through multilayer switch, realizes the configuration that comes the controlling packet coprocessor by microprocessor.Aforementioned addresses inquiry/analytic message and logon message are through the high-speed port between multilayer switch and the bag coprocessor, between multilayer switch and bag coprocessor, transmit.Messages such as aforementioned OAM, Ping are through the pci interface between multilayer switch and the microprocessor, between multilayer switch and microprocessor, transmit.Aforementioned bag coprocessor configuration message is through the pci interface between multilayer switch and the microprocessor; Realize the transmission between microprocessor and the multilayer switch, and realize the transmission between bag coprocessor and the multilayer switch through the high-speed port between bag coprocessor and the multilayer switch.
Therefore, complement each other standard network disposal ability that can realize enriching and IP Telecommunication Network system flexibly through multilayer switch and customizable bag coprocessor.
More than edge gateway equipment and its implementation that is used for the IP Telecommunication Network system of the present invention carried out detailed explanation, but obviously concrete way of realization of the present invention is not limited thereto.For the those skilled in the art in present technique field, the various conspicuous change of under the situation that does not deviate from claim scope of the present invention, it being carried out is all within protection scope of the present invention.
Claims (10)
1. edge gateway equipment that is used for the IP Telecommunication Network system is characterized in that this equipment comprises:
Multilayer switch, it has and is used to connect IP network and does not have the network interface that is connected data network with multiple location;
The bag coprocessor, it is connected with said multilayer switch and swap data, and the data message format is changed; And,
Microprocessor, it is connected with said bag coprocessor with said multilayer switch, and said multilayer switch and said bag coprocessor are configured and control.
2. edge gateway equipment as claimed in claim 1 is characterized in that:
Said multilayer switch has the IP network interface that is used to connect IP network and is used to be connected multiple location and does not have the interface that connects data network.
3. edge gateway equipment as claimed in claim 2 is characterized in that:
Said multilayer switch also has address mapping device interface and network management interface.
4. edge gateway equipment as claimed in claim 1 is characterized in that:
Said multilayer switch and port bandwidth between the said bag coprocessor equal to be used in the said multilayer switch to be connected the aggregate bandwidth that IP network and multiple location do not have the network interface that is connected data network.
5. edge gateway equipment as claimed in claim 1 is characterized in that:
Said bag coprocessor assists to create the address lookup request, handles the address resolution response from address mapping device, safeguards that IP network does not have the address translation template table that is connected between the data network with multiple location.
6. an edge gateway equipment as claimed in claim 1 is realized the method that message is handled, and it is characterized in that:
When message when IP network gets into multiple location and does not have the data network of connection; The message information relevant in the message that the multilayer switch inspection receives with route; Then; The IP network that receives is not had the message that connects data network to multiple location send to the bag coprocessor; Converting the IP message format into multiple location by said bag coprocessor does not have the message format that connects data network and sends to said multilayer switch, and said multilayer switch is carried out two layers of exchange to there is the data of connection network packet from the multiple location of said bag coprocessor, and the multiple location after will change does not have connection data network packet and sends to the respective nodes in the IP Telecommunication Network;
When message does not have the data network of connection entering IP network from multiple location; Said multilayer switch directly sends to said bag coprocessor with message; Carry out multiple location by said bag coprocessor and do not have of the conversion of connection data network packet to the IP message; And the message after will changing sends it back said multilayer switch, gets into the corresponding IP node of IP network at last through said multilayer switch.
7. edge gateway equipment as claimed in claim 6 is realized the method that message is handled, and it is characterized in that:
Said multilayer switch compiles the message that does not have the connection data network from the multiple location of IP network entering that receives, and sends to said bag coprocessor.
8. edge gateway equipment as claimed in claim 6 is realized the method that message is handled, and it is characterized in that:
When message when IP network gets into multiple location and does not have the data network of connection; Before the message that does not have the connection data network from the multiple location of IP network entering that said multilayer switch will receive sent to said bag coprocessor, said multilayer switch was carried out bandwidth control and/or is weighed assignment message priority.
9. edge gateway equipment as claimed in claim 6 is realized the method that message is handled, and it is characterized in that:
Through said multilayer switch, exchange packets coprocessor configuration message is controlled the configuration of said bag coprocessor by said microprocessor between said bag coprocessor and microprocessor.
10. edge gateway equipment as claimed in claim 6 is realized the method that message is handled, and it is characterized in that:
Exchange webmaster message, address lookup/analytic message and logon message between said multilayer switch and microprocessor.
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| CN2009100786348A CN101820401B (en) | 2009-02-27 | 2009-02-27 | Edge gateway equipment used for IP telecom network system and implementation method thereof |
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| CN2009100786348A CN101820401B (en) | 2009-02-27 | 2009-02-27 | Edge gateway equipment used for IP telecom network system and implementation method thereof |
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| CN101820401B true CN101820401B (en) | 2012-03-21 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6775804B1 (en) * | 2000-11-28 | 2004-08-10 | Nortel Networks Limited | Determining integrity of a packet |
| CN1578238A (en) * | 2004-04-28 | 2005-02-09 | 信息产业部电信研究院 | Ip telecommunication network system and it realizing method |
| CN1713632A (en) * | 2004-06-24 | 2005-12-28 | 信息产业部电信研究院 | Group broadcast realization in IP telecommunication network system |
| CN1731759A (en) * | 2004-08-05 | 2006-02-08 | 信息产业部电信研究院 | Multi-address connectionless data network packet package method in IP telecommunication network |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6775804B1 (en) * | 2000-11-28 | 2004-08-10 | Nortel Networks Limited | Determining integrity of a packet |
| CN1578238A (en) * | 2004-04-28 | 2005-02-09 | 信息产业部电信研究院 | Ip telecommunication network system and it realizing method |
| CN1713632A (en) * | 2004-06-24 | 2005-12-28 | 信息产业部电信研究院 | Group broadcast realization in IP telecommunication network system |
| CN1731759A (en) * | 2004-08-05 | 2006-02-08 | 信息产业部电信研究院 | Multi-address connectionless data network packet package method in IP telecommunication network |
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