CN102308523A - Data communication network configuration method, gateway network element and data communication system - Google Patents
Data communication network configuration method, gateway network element and data communication system Download PDFInfo
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- CN102308523A CN102308523A CN2011800014530A CN201180001453A CN102308523A CN 102308523 A CN102308523 A CN 102308523A CN 2011800014530 A CN2011800014530 A CN 2011800014530A CN 201180001453 A CN201180001453 A CN 201180001453A CN 102308523 A CN102308523 A CN 102308523A
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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
- H04L61/2514—Translation of Internet protocol [IP] addresses between local and global IP addresses
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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
Abstract
The invention discloses a DCN configuration method, a gateway network element and a data communication system. The gateway network element transmits a broadcast message having the IP address of a network management server to a non-gateway network element in a management area. The network element mark registration information transmitted by the non-gateway network element after the broadcast message is sent is acquired. A public network IP address and a private network IP address for device management are distributed by the non-gateway network element, and a NAT mapping table is formed and stored. The NAT mapping table is registered in the network management server. The message exchange between the non-gateway network element and the network management server can be achieved based on the NAT mapping table. When the message exchange is conducted between the network management server and the non-gateway network element, the gateway network element only needs to conduct a NAT conversion on the message. Accordingly, the CPU load of the gateway network element is reduced, the network element number in the management area is effectively increased and the forwarding efficiency of the message in the management area is improved.
Description
Technical field
The present invention relates to communication technique field, more particularly, relate to data communication network collocation method, Gateway Network Element and data communication system.
Background technology
Backhaul carrying between mobile base station and the wireless core equipment is carried by fixed communication device.In order to realize the remote deployment of wireless backhaul; Prior art adopts data communication network (Data Communication Network; DCN) system comes to provide for the network equipment communication function of management access, managing control information, thereby can just accomplish remote deployment and the management to each equipment at the network management server center.
DCN grid is made up of network management server, Gateway Network Element and non-gateway network element and the connection line between them or network; Wherein, network management server and Gateway Network Element realize being connected and mutual between can directly visit; Gateway Network Element and a plurality of non-gateway network element direct with it or that be connected indirectly constitute management domains, can directly visit between the Gateway Network Element during management domain is interior and a plurality of non-gateway network element are mutual.
On the physical link of interior each the equipment room direct interconnection of DCN management domain; Adopt ppp protocol; Set up point-to-point logical links passage; And on direct-connected port, distribute the private network IP address of the same network segment; Get access to the routing iinformation of management plane at these point-to-point link passages through Routing Protocol then, this routing iinformation is the main frame route that is made up of the private net address that distributes in ppp link and the PPP process.Transmission through said routing iinformation realization DCN message between Gateway Network Element in the DCN management domain and the non-gateway network element.
In the prior art, the concrete workflow of DCN system comprises:
At down direction; When the network element of network management server in management domain sent the IP message, the IP message included purpose IP address since network management server only and the Gateway Network Element in the management domain contact directly; So these purposes IP address is the IP address of Gateway Network Element.Gateway Network Element is after receiving the IP message; Need to judge the NE ID in the IP message; If the NE ID in the IP message is the NE ID of this gateway network element; Then the IP message being given more upper-layer protocol/application continues to handle; If the NE ID in the IP message is not the NE ID of this gateway network element, then convert the IP address of purpose network element to according to this NE ID, go out through the management plane routing forwarding then; Here, the purpose network element is a non-gateway network element; After non-gateway network element is received the IP message, judge whether the purpose network element IP address is the IP address of this network element, if this non-gateway network element is given more upper strata continuation with the IP message and handled, if not, then the routing iinformation according to management plane forwards the IP message.
At up direction; When the non-gateway network element in the management domain when network management server sends the IP message; At first the routing iinformation according to management plane is sent to Gateway Network Element with the IP message; Gateway Network Element obtains the NE ID of this non-gateway network element according to the IP address information of this non-gateway network element; After during Gateway Network Element joins message this NE ID; Again the IP address information of this non-gateway network element is changed to the IP address information of Gateway Network Element; At last, the Gateway Network Element IP message of IP address information that will include NE ID and the Gateway Network Element of non-gateway network element is sent to network management server.
The inventor finds after deliberation; At least there is following defective in the prior art: resolve because all administrative messages all must carry out application layer via Gateway Network Element; Cause the cpu load of Gateway Network Element excessive; Therefore the limited amount of network element in the management domain, IP message forwarding efficient is not high in the management domain.
Summary of the invention
In view of this, the embodiment of the invention provides DCN collocation method, Gateway Network Element and data communication network DCN, to alleviate the cpu load of Gateway Network Element.
The embodiment of the invention provides a kind of data communication network DCN collocation method on the one hand, comprising:
Non-gateway network element to self belonging in the management domain sends the broadcasting packet of the IP address of carrying network management server;
Obtain said non-gateway network element and receive the network element ID log-on message that sends behind the said broadcasting packet, said network element ID log-on message comprises the network element ID of said non-gateway network element;
For said non-gateway network element distributes the private network IP address that comprises public network IP address and be used for equipment control, generate and store the network identity that comprises said non-gateway network element, public network IP address, and the NAT mapping table that is used for the private network IP address of equipment control;
Register said NAT mapping table to said network management server.
Present embodiment provides a kind of Gateway Network Element on the other hand, comprising:
Transmitter, the non-gateway network element that is used for the management domain under said Gateway Network Element sends the broadcasting packet of the IP address of carrying network management server;
Acquiring unit is used to obtain non-gateway network element and receives the network element ID log-on message that is sent behind the broadcasting packet, and the network element ID log-on message comprises the network element ID of said non-gateway network element;
Generation unit is used to the private network IP address that non-gateway network element distributes public network IP address and is used for equipment control, and generates the network element ID that comprises said non-gateway network element, public network IP address, and the NAT mapping table that is used for the private network IP address of equipment control;
Memory is used to store the NAT mapping table that said generation unit generates; And
Registering unit is used for registering the NAT mapping table that said generation unit generates to network management server.
The embodiment of the invention on the one hand provides a kind of data communication system again, comprises network management server, above-mentioned Gateway Network Element and at least one non-gateway network element; Said Gateway Network Element and said at least one non-gateway network element belong to same management domain, and said at least one non-gateway network element communicates through said Gateway Network Element and said network management server.
Can draw by technique scheme; In the present embodiment; When receiving the network element ID log-on message that non-gateway network element sends; For this non-gateway network element distributes public network IP address and the private network IP address that is used to carry out equipment control; Generate and store the NAT mapping table; Gateway Network Element is registered this NAT mapping table in network management server then; Thereby when between network management server and non-gateway network element, carrying out message interaction; Gateway Network Element only need carry out the NAT conversion to message and get final product; So alleviated the load of Gateway Network Element CPU; Make that thus Gateway Network Element no longer is the performance bottleneck of whole DCN; Increased the NE quantity in the management domain effectively; And, improved message forwarding efficient in the management domain.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do simple the introduction to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously; Accompanying drawing in describing below only is some embodiments of the present invention; For those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the step sketch map of DCN collocation method in the embodiment of the invention;
Fig. 2 is the formation sketch map of NAT mapping table in the embodiment of the invention;
Fig. 3 is the structural representation of data communication system in the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The inventor is through discovering; In the prior art; Why the cpu load of Gateway Network Element is excessive; Be because; Gateway Network Element need be served as the application level gateway functionality of management maintenance message; Promptly; After Gateway Network Element is received the management maintenance message; Must resolve the payload segment of this message; Identify network element ID; And then encapsulated message, this mode can cause all management maintenance messages must on deliver to Gateway Network Element CPU handle because the CPU of Gateway Network Element need handle the management maintenance message that each non-gateway network element in the management domain sends; Therefore the CPU of Gateway Network Element can increase load; Thereby make Gateway Network Element become the performance bottleneck of whole DCN, cause the NE quantity in the management domain limited, message forwarding efficient is not high in the management domain.
Based on above research, for the NE quantity that solves in the management domain that prior art exists limited, and, the not high problem of message forwarding efficient in the management domain, present embodiment provides a kind of DCN collocation method, as shown in Figure 1, comprises step:
S11, Gateway Network Element send the broadcasting packet of the IP address of carrying network management server to the non-gateway network element that self belongs in the management domain.This broadcasting packet is used to make the non-gateway network element in this management domain to carry out the network element ID registration to said Gateway Network Element.
In the present embodiment, in same management domain, the public network IP address of h.323-configured gateway network element at first, the address that obtains network management server, and Gateway Network Element is to the routed path of network management server.
Then, set up PPP between any two network elements that directly link to each other in the management domain and connect, each network element starts the IGP Routing Protocol then.
Then, Gateway Network Element all non-gateway network element in management domain send broadcasting packet, the IP address information of broadcasting packet packet network management server.If when not having the IP address information of h.323-configured gateway network element in the non-gateway network element, also should comprise the IP address information of Gateway Network Element in this broadcasting packet.
Specifically, Gateway Network Element sends broadcasting packet through ppp link to all direct-connected with it non-gateway network element; After these and the direct-connected non-gateway network element of Gateway Network Element are received broadcasting packet, transmit this broadcasting packet to other and own direct-connected non-gateway network element.By that analogy, arrive all non-gateway network element in the whole management domain up to this broadcasting packet.
Gateway Network Element is through sending broadcasting packet; Make the non-gateway network element in the management domain can obtain the IP address information of Gateway Network Element and the IP address information of network management server, so each non-gateway network element can realization and Gateway Network Element or network management server between transfer of data.
Concrete, in the present embodiment, can send said broadcasting packet through the agreement of redetermination.Also can send said broadcasting packet through the extension standards agreement, such as, can send said broadcasting packet through the expansion Routing Protocol.
The information that said broadcasting packet carries comprises the IP address of said network management server; The IP address that can also comprise said Gateway Network Element; And administrative vlan (Virtual Local Area Network, sign VLAN) under the said Gateway Network Element.
S12, the non-gateway network element that obtains in the said management domain are received the network element ID log-on message that is sent behind this broadcasting packet, and the network element ID log-on message comprises the network element ID of non-gateway network element.Alternatively, this network element ID log-on message can also comprise that the management agreement that this non-gateway network element supports (below be called communication protocol) and this non-gateway network element send the port of this network element ID log-on message (below be called first port).
This communication protocol can be based on the management agreement of IP, like SNMP, NETCONF or HTTP.Non-gateway network element in the same management domain uses identical communication protocol.
For make Gateway Network Element can Forwarding plane directly transmit non-gateway network element and and network management server between mutual management maintenance message, need non-gateway network element that the network element ID information of oneself is sent to Gateway Network Element.
In practical application, network element ID can be that this non-gateway network element equipment is stored in character, character string, numeral, numeric string or the digit strings in the device memory when dispatching from the factory; Preferably, when network element ID was digit strings, concrete can be the MAC Address of this non-gateway network element equipment.
S13, the private network IP address of distributing public network IP address and being used for equipment control for the non-gateway network element that sends the network element ID log-on message; Generate and store the network element ID that comprises said non-gateway network element; Public network IP address, and the NAT mapping table that is used for the private network IP address of equipment control.When said network element ID log-on message comprised the communication protocol and/or first port, this NAT mapping table can also comprise this communication protocol and/or first port.
Gateway Network Element is after receiving this network element ID log-on message that non-gateway network element sends; For make non-gateway network element can and the outer network management server of management domain between communication; At first to distribute public network IP address and the private network IP address that is used for equipment control for non-gateway network element; Then; Generation comprises the public network address of non-gateway network element; Private network IP address, and the NAT mapping table of network element ID.
In practical application, the NAT mapping table can also comprise that Gateway Network Element receives the port numbers of the port of the network element ID log-on message that non-gateway network element sends (below be called second port numbers).
Concrete, the formation of NAT mapping table can be with reference to figure 2, the NAT mapping table that constitutes by the relevant information of 4 non-gateway network element shown in Fig. 2, and the network element ID of 4 non-gateway network element is respectively NE10, NE11, NE20, NE21; The network element ID of each non-gateway network element is also to private network IP address/first port that this non-gateway network element should be arranged, IP address/second port and the communication protocol of public network.
S14, Gateway Network Element are to network management server registration NAT mapping table.
Gateway Network Element is behind the NAT mapping table of setting up the network element ID of non-gateway network element, public network IP address and private network IP address, to this NAT mapping table of network management server registration.
After above-mentioned layoutprocedure was accomplished, network management server can be according to the management maintenance message of this NAT mapping table to Gateway Network Element transmission non-gateway network element, and Gateway Network Element sends to non-gateway network element according to this NAT mapping table with the management maintenance message.
Specifically, in obtaining NAT mapping table, the network management server can obtain non-GNE public IP address or IP address and the first port, so that the non-gateway network element and network management server through an IP-based management protocol communication protocols, such as SNMP or HTTP protocol to exchange packets, if the GNE receives network management server sends the destination address of a non-GNE public IP address of the packets stored in the memory in accordance with NAT mapping table, the packet's destination IP address changes to become the non-GNE allocated for device management, private IP address, the modified packet to the gateway NE; Or GNE received non-GNE source address sent by the non-GNE for device management private IP address, destination address is the IP address of the network management server packets, depending on memory mapping table stored in NAT the packet's source IP address changes to become the non-GNE assigned public IP address, the modified packets sent to the network management server.
When having comprised communication protocol in the network element ID log-on message, network management server encapsulates the message that sends to this non-gateway network element according to the agreement of non-gateway network element support.
In the network element ID log-on message, comprised first port; The destination address that network management server sends in the message of non-gateway network element is the public network IP address of this non-gateway network element; Destination interface is this first port; Gateway Network Element sends to this first port with amended message after the destination address of this message is revised as the private network IP address that is used for equipment control of this non-gateway network element.
In the present embodiment; At first Gateway Network Element is that non-gateway network element distributes public network address and the private network IP address that is used to manage; And according to the network element ID information of non-gateway network element; The private network IP address information and the public network address information that are used to manage are set up the NAT mapping table; Gateway Network Element is by registering the NAT mapping table in network management server then; Thereby when between network management server and non-gateway network element, carrying out MESSAGE EXCHANGE; Gateway Network Element only need carry out the NAT conversion to message and get final product; So alleviated the load of Gateway Network Element CPU; Make that thus Gateway Network Element no longer is the performance bottleneck of whole DCN; Can increase the NE quantity in the management domain; And, improve message forwarding efficient in the management domain.
Because the needs of network management strategy; Possible management plane need be limited on certain VLAN; So; In the present embodiment; Can also comprise the Management VLAN sign in the broadcasting packet, concrete, if in broadcasting packet, carried the sign of a Management VLAN; The non-gateway network element of receiving this broadcasting packet rebulids the PPP connection according to this Management VLAN, and according to newly-established PPP connection carrying out route refresh.Because in the present embodiment, the mode through the active broadcast Management VLAN has replaced default vlan, so, for the scene that message need be carried out secondary isolation, the flexibility that can improve system.
In addition, present embodiment also provides a kind of data communication network, is used to realize said method of the present invention, and therefore, present embodiment is described not exhaustive place, can reference method embodiment description partly.As shown in Figure 3; This data communication network comprises Gateway Network Element; At least one non-gateway network element (having illustrated three among the figure) and network management server; Said Gateway Network Element and said at least one non-gateway network element belong to same management domain, and said at least one non-gateway network element communicates through said Gateway Network Element and said network management server.Wherein, this Gateway Network Element comprises: transmitter 1, acquiring unit 2, generation unit 3, memory 4 and registering unit 5.
In the present embodiment; Setting up PPP on all physical links that directly link to each other in the management domain under this Gateway Network Element connects; And after each network element started the IGP Routing Protocol, the non-gateway network element in the management domain of transmitter 1 under this Gateway Network Element sent the broadcasting packet of the IP address of carrying network management server.
Specifically, all non-gateway network element that directly link to each other with this Gateway Network Element send this broadcasting packet in the management domain of transmitter 1 under this Gateway Network Element.
This broadcasting packet comprises the IP address of network management server.Alternatively, this broadcasting packet can also comprise the IP address of Gateway Network Element.Like this, send broadcasting packet, make that the non-gateway network element in the management domain can obtain the IP address of Gateway Network Element and the IP address of network management server through Gateway Network Element, and then can realization and the communicating by letter of Gateway Network Element or network management server.
Concrete, in the present embodiment, can send said broadcasting packet through the agreement of redetermination.Also can send said broadcasting packet through the extension standards agreement, such as, can send said broadcasting packet through the expansion Routing Protocol.
In order to make the message interaction between non-gateway network element and the network management server realize directly transmitting at Forwarding plane, need non-gateway network element that the network element ID information of oneself is sent to Gateway Network Element through Gateway Network Element.
Acquiring unit 2 obtains non-gateway network element and receives the network element ID log-on message that is sent behind the broadcasting packet; The network element ID log-on message comprises the network element ID of said non-gateway network element; In addition, this network element ID log-on message can further include the communications protocol and first port of said non-gateway network element and said network management server communication.
Generation unit 3; Be non-gateway network element distribution public network IP address that sends the network element ID log-on message and the private network IP address that is used for equipment control; And generation comprises the network element ID of said non-gateway network element, public network IP address, and the NAT mapping table that is used for the private network IP address of equipment control.Alternatively, this NAT mapping table can also comprise the communication protocol and/or first port.
Gateway Network Element is after receiving that non-gateway network element sends this network element ID log-on message; For make non-gateway network element can and the outer network management server of management domain between can communication; At first to distribute public network IP address and the private network IP address that is used for equipment control for non-gateway network element; Then, set up the public network IP address comprise non-gateway network element, be used for the private network IP address of equipment control and the NAT mapping table of network element ID.
In practical application, the NAT mapping table can also comprise the port numbers (i.e. second port numbers) of the port of the network element ID log-on message that Gateway Network Element reception non-gateway network element sends.
The network element ID log-on message can be that this non-gateway network element equipment is stored in character, character string, numeral, numeric string or the digit strings in the device memory when dispatching from the factory; Preferably, when the network element ID log-on message was digit strings, concrete can be the MAC Address of this non-gateway network element equipment.The network element ID log-on message also can be the IP address of this non-gateway network element, or the IP address adds the port numbers of communications protocol; Wherein the IP address of non-gateway network element can be the private network IP address of this non-gateway network element in management domain, and is concrete, and this private network IP address can generate when setting up the PPP connection.
Registering unit 5 is used for the NAT mapping table that generates to network management server registration generation unit.
Gateway Network Element foundation comprise the network element ID, public network IP address of non-gateway network element and the NAT mapping table of the private network IP address that is used for equipment control distributed for this non-gateway network element after, to this NAT mapping table of network management server registration; Like this, after network management server obtained this NAT mapping table, this network management server was issued in the IP heading of management maintenance message of non-gateway network element, and destination address is exactly the public network IP address of non-gateway network element.Gateway Network Element carries out the NAT conversion after receiving this message, and the public network IP address of the non-gateway network element in the IP head is replaced with the private network IP address that is used for the non-gateway network element management, in management domain, carries out normal IP routing forwarding flow process then.
In addition; This Gateway Network Element can also comprise NAT converting unit 6; Be used for when receiving network management server to message that non-gateway network element sends; According to the NAT mapping table of storing in the memory; The purpose IP address modification of this message is become the private network IP address that is used for equipment control that this non-gateway network element distributes, amended message is sent to this non-gateway network element; And/or; Be used for when receiving non-gateway network element to message that network management server sends; According to the NAT mapping table of storing in the memory, the source IP address of this message is revised the public network IP address that becomes this non-gateway network element distribution, amended message is sent to network management server; And/or; When the network element ID log-on message of non-gateway network element transmission comprises first port; The destination address that the receiving network managing server sends is that public network IP address, the destination slogan of non-gateway network element is the message of this first port; The private network IP address that is used for equipment control with the destination address of said message is revised as said non-gateway network element sends to said first port with said amended message.
Network management server in this data communication system receives the also NAT mapping table of storage gateway network element transmission, according to this NAT mapping table encapsulated message, the message after the encapsulation is sent to Gateway Network Element.By Gateway Network Element message is carried out sending to corresponding non-gateway network element after the NAT conversion.
Non-gateway network element in this data communication system; Receive the broadcasting packet that Gateway Network Element sends; Send the network element ID log-on message of self to Gateway Network Element, make this Gateway Network Element generate the NAT mapping table, receive the message after this Gateway Network Element carries out the NAT conversion according to this network element ID log-on message.
In the present embodiment, at first Gateway Network Element is that non-gateway network element distributes public network address information and the private network IP address that is used for equipment control, the NAT mapping table, and Gateway Network Element is registered the NAT mapping table in network management server then.Because after obtaining the NAT mapping table; Network management server can obtain the public network IP address of non-gateway network element; Like this; Pass through communications protocol between non-gateway network element and the network management server such as IP-based management agreement; When carrying out message switching like SNMP or http protocol; Gateway Network Element only need carry out the NAT conversion to message and get final product; Thereby needing in the prior art having avoided Gateway Network Element to carry out application layer resolves; As; The payload segment that needs analytic message; Identify network element ID, and then encapsulated message etc. these expend the work of Gateway Network Element CPU, so alleviated the load of Gateway Network Element CPU; Make that thus Gateway Network Element no longer is the performance bottleneck of whole DCN; Increased the NE quantity in the management domain effectively, and, message forwarding efficient in the management domain improved.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (11)
1. a data communication network DCN collocation method is characterized in that, comprising:
Non-gateway network element to self belonging in the management domain sends the broadcasting packet of the IP address of carrying network management server;
Obtain said non-gateway network element and receive the network element ID log-on message that sends behind the said broadcasting packet, said network element ID log-on message comprises the network element ID of said non-gateway network element;
For said non-gateway network element distributes the private network IP address that comprises public network IP address and be used for equipment control, generate and store the network identity that comprises said non-gateway network element, public network IP address, and the NAT mapping table that is used for the private network IP address of equipment control;
Register said NAT mapping table to said network management server.
2. collocation method according to claim 1 is characterized in that, said method also comprises:
The message that the receiving network managing server sends, the destination address of said message is the public network IP address of non-gateway network element;
According to the NAT mapping table of being stored, the private network IP address that is used for equipment control with the destination address of said message is revised as said non-gateway network element sends to said non-gateway network element with the said message of having revised destination address.
3. method according to claim 2 is characterized in that, said method also comprises:
Receive the message that non-gateway network element sends, the source address of said message is the private network IP address that is used for equipment control of said non-gateway network element;
According to the NAT mapping table of being stored, the source address modification of saying said message is the public network IP address of said non-gateway network element, and the said message of having revised source address is sent to said network management server.
4. according to any described method among the claim 1-3, it is characterized in that said broadcasting packet also comprises the IP address and/or the described administrative vlan sign of said Gateway Network Element of said Gateway Network Element.
5. according to any described method among the claim 1-3, it is characterized in that, also comprise the communication protocol and/or first port that said non-gateway network element is supported in the said network element ID log-on message; Said first port is said non-gateway network element sends a port from said network element ID log-on message to said Gateway Network Element;
Said NAT mapping table also comprises the said communication protocol and/or first port.
6. method according to claim 5 is characterized in that,
When having comprised said first port in the said NAT mapping table, said method further comprises:
The receiving network managing server sends, destination address is that public network IP address, the destination interface of non-gateway network element is the message of said first port;
The destination address of said message is revised as the private network IP address that is used for equipment control of said non-gateway network element;
Say that said amended message sends to said first port.
7. a Gateway Network Element is characterized in that, comprising:
Transmitter, the non-gateway network element that is used for the management domain under said Gateway Network Element sends the broadcasting packet of the IP address of carrying network management server;
Acquiring unit is used to obtain non-gateway network element and receives the network element ID log-on message that is sent behind the broadcasting packet, and the network element ID log-on message comprises the network element ID of said non-gateway network element;
Generation unit is used to the private network IP address that non-gateway network element distributes public network IP address and is used for equipment control, and generates the network element ID that comprises said non-gateway network element, public network IP address, and the NAT mapping table that is used for the private network IP address of equipment control;
Memory is used to store the NAT mapping table that said generation unit generates; And
Registering unit is used for registering the NAT mapping table that said generation unit generates to network management server.
8. Gateway Network Element according to claim 7 is characterized in that, also comprises:
The NAT converting unit; Be used for when receiving network management server to message that non-gateway network element sends; According to the NAT mapping table of storing in the said memory; The purpose IP address modification of said message is become the private network IP address that is used for equipment control that said non-gateway network element distributes, said amended message is sent to said non-gateway network element.
9. Gateway Network Element according to claim 8; It is characterized in that; Said NAT converting unit also is used for when receiving said non-gateway network element to message that said network management server sends; According to the NAT mapping table of storing in the said memory; The source IP address of this message is revised the public network IP address that becomes said non-gateway network element distribution, amended message is sent to said network management server.
10. according to Claim 8 or 9 described Gateway Network Element; It is characterized in that; Said NAT converting unit also is used for: the destination address that the receiving network managing server sends is that public network IP address, the destination interface of non-gateway network element is the message of first port; The private network IP address that is used for equipment control with the destination address of said message is revised as said non-gateway network element sends to said first port with said amended message;
Said first port is said non-gateway network element sends a port from said network element ID log-on message to said Gateway Network Element.
11. a data communication system is characterized in that, comprises network management server, like any described Gateway Network Element and at least one non-gateway network element among the claim 6-10; Said Gateway Network Element and said at least one non-gateway network element belong to same management domain, and said at least one non-gateway network element communicates through said Gateway Network Element and said network management server.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/077665 WO2012106935A1 (en) | 2011-07-27 | 2011-07-27 | Data communication network configuration method, gateway element and data communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102308523A true CN102308523A (en) | 2012-01-04 |
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| CN102308523B (en) | 2014-07-16 |
| WO2012106935A1 (en) | 2012-08-16 |
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