CN101150530B - Forwarding system, method and forward unit agent under forward control separation architecture - Google Patents
Forwarding system, method and forward unit agent under forward control separation architecture Download PDFInfo
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Abstract
The invention discloses a forwarding system in the forwarding control and separation infrastructure, which consists of an FE proxy and an FE, wherein, the FE proxy is used for connecting the FE with other devices, and conducting the switch of forwarding models and/or the switch of types of physical interfaces when the FE is different from other forwarding models or when the physical interface is different from each other in type. The invention also discloses an FE proxy and a method of data forwarding in the forwarding control and separation infrastructure. According to the invention, the FE proxy is arranged in the forwarding control and separation infrastructure to connect with the FE; the FE proxy is used for connecting the FE with other devices, and conducting the switch of forwarding models and/or the switch of types of physical interfaces when the FE is different from other forwarding models or when the physical interface is different from each other in type, thus fulfilling the intercommunications between the FE proxy and other devices, and improving the intercommunications of each device in the ForCES infrastructure as well.
Description
Technical field
The present invention relates to the information retransmission technique field in the communication system, be meant a kind of repeater system in the control separation architecture, a kind of unit agent under forward and a kind of retransmission method of transmitting in the control separation architecture transmitted especially.
Background technology
Forwarding control separates (ForCES) but technology makes control and Forwarding plane all obtain technological progress fast under the prerequisite of maintenance mutual operation.This structure also makes the scalability of equipment be very easy to obtain, and forwarding and control ability can be increased in the network element (NE) flexibly.
Be connected to the ForCES framework that example shows a kind of future with retransmission unit (FE) by switching network among Fig. 1.Comprising a plurality of FE:FE1～FEn, control unit (CE) and switching network; FE1～FEn may may finish different functions from different manufacturers in system, also may finish identical functions.In situation shown in Figure 1, these FE link together by switching network, also may directly link together or link together by a network for these FE of small-sized router.Connect for switching network, some interfaces of standard have been formed in physical layer, such as the switching network of 10G generally is system's packet interface (System Packet Interface, SPI) 4.2 and general switch interface (CommonSwitch Interface, CSIX) two kinds of interface standards; Connect by local area network (LAN), also all can adopt the physical layer interface of standard of comparison, such as Ethernet interface etc.
On SPI4.2 or CSIX protocol layer, be the data format of user oneself definition, promptly transmit the real data format that uses.Forwarding comprises two sections: take in from packet and come the part of submitting before the draping and be called up (Ingress), receive to wrap from switching network to send this section and be called descending (Egress).A part of task of each processing forward of uplink and downlink needs to transmit a part of intermediate data between uplink and downlink.
For transmitting, among the FE of different manufacturers, in order to realize the optimum of its efficient, reliability etc., its forwarding model may be different.With the IPV4 forwarding is example, supposes that outlet is the situation of Ethernet, has following at least two kinds of forwarding models:
First kind of forwarding model as shown in Figure 2, FE at first carries out link layer process on up direction, search then and transmit the IP address that (FIB) obtains next jumping, pass through web plate then, it is above-mentioned switching network, the IP address that obtains is delivered to down direction as interface parameters, supposition is the Ethernet outlet on down direction, then FE is by the up next-hop ip address that passes over, search the ARP(Address Resolution Protocol) table, find purpose media interviews control (MAC) address, encapsulate link layer header then, transmit.
Second kind of forwarding model as shown in Figure 3, after FE on the up direction carries out link layer process, what search that FIB obtains is an adjacency list (AT) index, by web plate with the AT table index that obtains as interface parameters be delivered to descending after, FE on the down direction uses the AT table index to search the AT table, find target MAC (Media Access Control) address, encapsulate link layer header then, transmit.
In ForCES framework shown in Figure 1, or other comprise in the ForCES framework from the FE of different vendor, because FE is from different manufacturers, the forwarding model that it adopted may be different, when the FE on the up direction and the forwarding model that FE adopted on the down direction not simultaneously, because interface parameters is inconsistent, just can't finish forwarding capability, promptly can't realize the intercommunication between the FE.
Shown in Fig. 2 and Fig. 3 is the simplest forwarding model, in actual applications, increased after a lot of application, and the corresponding different network architecture, directly be connected as between FE and the FE, or different pass-through modes, as two layers of forwarding, multiprotocol label switching (mpls) forwarding etc., it forwarding model that comprises is of a great variety, and the interface parameters difference of transmitting between FE is also very big, and these all can cause adopting between the FE of different forwarding models can't realize intercommunication.
Above-mentioned only be can't intercommunication between FE and the FE problem, in practice, if the web plate situation is arranged, also there is different types of physical interface between web plate and the FE, if the physical interface kind that therefore FE adopted is different from the physical interface kind that web plate adopts, will cause can't intercommunication between FE and the web plate.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of unit agent under forward, a kind of retransmission method and a kind of repeater system, can improve the interoperability of equipment in the ForCES framework.
First aspect for achieving the above object the invention provides a kind of repeater system of transmitting in the control separation architecture, comprises in this system: retransmission unit FE agency and FE;
Described FE agency is used to connect described FE and other equipment, and and/or physical interface type different with other device forwards models carried out the conversion of forwarding model and/or the conversion of physical interface type not simultaneously at FE.
Described other equipment can be FE, FE agency or switching network web plate.
Preferably, further comprise in the described system: control unit CE, be used for loading conversion table the FE agency, or further load configuration information;
Described CE directly is connected with described FE agency, or is connected with described FE agency by described FE;
The conversion table that described FE agency loads according to described CE is carried out the conversion of described forwarding model.
Preferably, further comprise in the described system: the FE manager is used for the CE that communicates this FE agency of FE agency configuration at pre-Assembly Phase;
Described FE manager directly is connected with described FE agency, or is connected with described FE agency by described FE.
Described FE agency can be arranged among the described FE, or is arranged in described other equipment, or is provided with separately.
Second aspect for achieving the above object the invention provides a kind of FE agency, is applied to transmit in the control separation architecture, comprises among this FE agency: first physical interface, frame head information translation module and second physical interface; Wherein,
First physical interface is used to receive the data from FE, after resolving Frame is sent to frame head information translation module; And/or, be used to receive from the Frame of frame head information translation module and after encapsulating and send to described FE;
Frame head information translation module is used to receive the Frame from first physical interface and/or second physical interface, carry out the forwarding model conversion if determine needs according to the information in this Frame frame head, then carry out the frame head conversion according to the conversion table that is provided with among the agency of the information inquiry FE in the frame head, then the Frame information correspondence after the conversion is sent to second physical interface and/or first physical interface, needs carry out the forwarding model conversion if determine not according to the information in the Frame frame head that receives, and then directly send the Frame correspondence that receives to second physical interface and/or first physical interface;
Second physical interface is used to receive the data of other equipment that connect by described FE agency from described FE, after resolving Frame is sent to frame head information translation module; And/or, being used to receive from the Frame of frame head information translation module and after encapsulating and sending to described other equipment, described other equipment are FE, FE agency or switching network web plate.
Preferably, further comprise among the described FE agency: communication module and list item maintenance module;
Described communication module is used for described FE agency communicates by letter with CE by it, or further communicates by letter with the FE manager;
The list item maintenance module is used for loading and safeguard conversion table by the list item relevant information of communication module reception from CE.
Preferably, further comprise among this FE agency: configuration module is used for obtaining the configuration of FE being acted on behalf of from the configuration information execution of CE by communication module.
The 3rd aspect for achieving the above object, the invention provides a kind of data forwarding method of transmitting in the control separation architecture, this method comprises: outlet and/or inlet at FE are provided with the FE agency, this FE agency connects FE and other equipment, and described other equipment are FE, FE agency or switching network web plate;
When FE agency determines its FE that connects and/or physical interface type different with described other device forwards models not simultaneously, carry out the conversion of forwarding model and/or the conversion of physical interface type.
Preferably, the then described conversion of carrying out forwarding model comprises:
After described FE acts on behalf of the Frame that receives from described FE or described other equipment, obtain transitional information according to the conversion table that is provided with among exit plate address information in the frame head and the described FE agency, and carry out the conversion of header content according to transitional information, send the Frame after the conversion then.
Preferably, the corresponding relation that comprises purpose FE information and transitional information in the described conversion table; Described purpose FE information is the address information of purpose FE place exit plate or the forwarding model of purpose FE;
When then described purpose FE information is the forwarding model of purpose FE, describedly obtains transitional information according to the conversion table that is provided with among the exit plate address information in the frame head and the described FE agency and comprise:
Inquire the linear correspondence table of oralia address and forwarding model according to the exit plate address information in the frame head, obtain the forwarding model of purpose FE, obtain transitional information according to described the transmitting of forwarding model inquiry of purpose FE then.
Preferably, comprise in the described conversion table: the corresponding relation of conversion table index, exit plate address information and transitional information; Then in the frame head of described Frame and send in the transmitting of FE of this Frame all that correspondence is provided with described conversion table index;
After then described FE agency receives Frame, obtain transitional information according to the conversion table index in the frame head, exit plate address information and described conversion table.
Preferably, comprise in the described Frame frame head: the forwarding model type of this Frame correspondence; Then described FE agency is according to the exit plate address information in this forwarding model type parsing frame head.
Preferably, further comprise after the described conversion of carrying out forwarding model: the described forwarding model type that comprises in the described frame head is set to need not to carry out the retention of forwarding model conversion;
After then described FE agency receives Frame, judge whether the forwarding model type that comprises in the described frame head is described retention, if then directly transmit this Frame; Need carry out the conversion of forwarding model otherwise determine, carry out the conversion that described forwarding model is carried out.
Preferably, described conversion table is generated and is arranged on by CE among the described FE agency.
By such scheme as can be seen, among the present invention, by the FE agency who is connected with FE is set in transmitting the control separation architecture; The FE agency is used to connect FE and other equipment, and at FE and/or physical interface type different with other device forwards models be not simultaneously, carry out the conversion of forwarding model and/or the conversion of physical interface type, thereby realized the intercommunication of FE agency, improved the interoperability of equipment in the ForCES framework with other equipment.
Description of drawings
Fig. 1 is a kind of ForCES configuration diagram;
Fig. 2 is a kind of schematic diagram of forwarding model;
Fig. 3 is the schematic diagram of another kind of forwarding model;
Fig. 4 is that a kind of network architecture of the present invention is formed schematic diagram;
Fig. 5 forms schematic diagram for the another kind of network architecture of the present invention;
Fig. 6 for CE among the present invention directly and the schematic diagram of FE agent communication;
Fig. 7 is the schematic diagram of CE among the present invention by FE and FE agent communication;
Fig. 8 forms schematic diagram for the internal structure that FE among the present invention acts on behalf of specific embodiment;
Fig. 9 is the structural representation of conversion table among the FE agency of the present invention;
Figure 10 is the frame format schematic diagram among the present invention;
Figure 11 is the flow chart of retransmission method of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Main thought of the present invention is, the FE agency is set in the ForCES framework, be used to connect FE and other equipment, and at FE and/or physical interface type different with other device forwards models be not simultaneously, carry out the conversion of forwarding model and/or the conversion of physical interface type, make and act on behalf of the intercommunication that can realize this FE and other equipment by this FE.
Above-mentioned other equipment are FE, FE agency or switching network web plate.The performed physical interface conversion of FE agency is meant that mainly the FE agency is arranged on the situation between FE and the web plate, also can be arranged on the situation between FE and other equipment; And the forwarding model conversion mainly is meant in the conversion link that connects by the FE agency, the situation that up FE is different with the descending forwarding model that FE adopted.FE manager and CE also can be connected to the FE agency, carry out the control to the FE agency.
The FE agency can be arranged on the exit position of FE, also can be arranged on the entry position of FE, and outlet and the entry position of FE can also be set simultaneously, i.e. the conversion that the FE agency carries out outlet and enters the mouth simultaneously.
In addition, the FE agency can be arranged among the FE, also can be arranged in the switching network, can also be provided with separately.When FE agency is provided with separately, if it is in the different machine frames with the FE that connects, FE act on behalf of with FE between communicate by letter and can increase security authentication mechanism, concrete security authentication mechanism can adopt existing various mechanism.
Fig. 4 shows the FE agency and is arranged between FE and the switching network, carries out the conversion of outlet and inlet simultaneously, promptly finishes simultaneously under the up-downgoing change over condition, and the network architecture is formed.Wherein, CE and FE manager can be carried out the control to the FE agency.
Fig. 5 shows the FE agency and is arranged between the FE, and finishes simultaneously under the downlink and uplink interfaces situation, and the network architecture is formed.Wherein, CE and FE manager can be carried out the control to the FE agency.
Physical interface kind between FE and the switching network is less, mainly comprises CSIX and SPI interface, can finish conversion by electric signal and inter-process between these interfaces, no longer describes in detail here.
Among the present invention, increase the conversion table index field in the transmitting of FE, this FE is provided with corresponding conversion table index and the forwarding model of self numbering in frame head when sending Frame.Correspondence is provided with conversion table in the FE agency, has comprised the corresponding relation of conversion table index, purpose FE information and transitional information in this conversion table.After then the FE agency receives Frame, according to information in the conversion table index in the frame head, forwarding model numbering and the forwarding head and the conversion table in self, this Frame is changed and sent to header content, make the FE content in the resolution data frame correctly finally receive this frame.
Realize the specifying information of forwarding model conversion among the FE agency, the information in the promptly above-mentioned conversion table can be carried in wherein by CE.In addition, CE can also carry out pattern configurations to FE, as configuration log-on message, load information, health inspection message and mode conversion information etc.CE can be directly and the FE agency communicate, specifically can adopt the ForCES agreement, as shown in Figure 6; CE also can communicate by the FE couple of FE agency adjacent with this FE, as shown in Figure 7.
The FE manager mainly is configured the FE agency at pre-Assembly Phase, comprise that mainly the FE manager obtains the ability information of CE, and configuration FE acts on behalf of the CE that communicates.The FE manager can use all the elements of giving pre-Assembly Phase agreement from static configuration, decides which CE to be used.Similarly, the FE manager can directly pass through ForCES agreement and described FE agent communication, also can communicate by FE and this FE agency that this FE agency connects.
Mainly comprise first physical interface, second physical interface and header content modular converter among the FE agency; Wherein, first physical interface is used to receive the data from FE, after resolving Frame is sent to frame head information translation module; And/or, be used to receive from the Frame of frame head information translation module and after encapsulating and send to described FE;
Frame head information translation module is used to receive the Frame from first physical interface and/or second physical interface, carry out the forwarding model conversion if determine needs according to the information in this Frame frame head, then carry out the frame head conversion according to the conversion table that is provided with among the agency of the information inquiry FE in the frame head, then the Frame information correspondence after the conversion is sent to second physical interface and/or first physical interface, needs carry out the forwarding model conversion if determine not according to the information in the Frame frame head that receives, and then directly send the Frame correspondence that receives to second physical interface and/or first physical interface;
Second physical interface is used to receive the data of other equipment that connect by described FE agency from described FE, after resolving Frame is sent to frame head information translation module; And/or, be used to receive from the Frame of frame head information translation module and after encapsulating and send to described other equipment.
Can also comprise among the FE agency: communication module, configuration module etc.As shown in Figure 8, the composition structural representation for FE of the present invention agency's specific embodiment comprises communication module, configuration module, physical interface A, physical interface B, table, list item maintenance module and header content modular converter.Wherein:
Communication module is used for FE agency and CE and FE manager and communicates.
Configuration module is used for CE by communication module load configuration information therein, and carries out FE agency's startup, loading, health inspection, mode conversion etc. according to the configuration information that loads, and specifically can finish by the configuration register of reading and writing internal.
Physical interface A and physical interface B, be above-mentioned first physical interface and second physical interface, be respectively applied for FE and act on behalf of connected terminal device and communicate, the interface type unanimity of the concrete connected equipment of interface type, these equipment can be FE, web plate or FE is the agency.That connect as physical interface A or physical interface B also is FE when acting on behalf of, and its interface can be any physical interface type.
Can comprise receiving unit among above-mentioned physical interface A and the physical interface B respectively and send part that then this FE agency can carry out the physical interface conversion and the forwarding model conversion of outlet and inlet simultaneously; Also can include only receiving unit by a physical interface in the reality, another physical interface includes only the transmission part, and then this FE agency can only be placed on outlet or the entry position of FE, only carries out a physical interface conversion and a forwarding model conversion on the direction.
The list item maintenance module is used for according to CE realizing the loading of table by the table on the indication maintenance proxy of communication module, and increase, deletion and the renewal etc. of data in the table.
Stored conversion table in the table, the structure of this conversion table comprises conversion table index, purpose FE information and converted contents as shown in Figure 9.Wherein be transitional information in the converted contents, purpose FE information can directly be the address of exit plate.Exit plate in system is more, under the more situation in purpose FE address, also can be the forwarding model of purpose FE promptly, then can further set out the linear correspondence table between oralia address and the forwarding model again.
The function of header content modular converter is above-mentioned to be illustrated, repeats no more here.
More than system of the present invention is formed and FE agency's inside is formed and had been described in detail, again conversion method of the present invention is elaborated below.
In conversion method of the present invention, need make amendment to transmitting among the existing FE with the frame head form of ForCES.
To the modification of transmitting among the existing FE mainly is to increase the conversion table index entry in transmitting.For different retransmission protocols, can distribute different value sections.For example, the value section of the conversion table index that distributes for the IPV4 agreement is 1～x, and the value section of the conversion table index that distributes for mpls protocol is x+1～y etc.
After the frame head modification to existing Frame, its frame format comprises three parts of content frame of transmitting sign (ID), transmitting head and needs forwarding as shown in figure 10.The content frame part that wherein needs to transmit is with existing identical; Transmitting sign and transmitting head is the frame head part, with existing different, specifically is:
ID part in the frame head can comprise conversion table index and forwarding model numbering two parts again.Wherein, the conversion table index is consistent with conversion table index value corresponding during the FE that transmits this Frame transmits, and is used for the query conversion table.Forwarding model is numbered the forwarding model numbering of current data frame correspondence, is used for determining whether to change and definite value of transmitting each territory of head of resolving; For example, when forwarding model is predefined retention, be assumed to be at 0 o'clock, expression need not to carry out the conversion of forwarding model; When forwarding model was numbered 1, first byte of transmitting head represent outbound port number, and forwarding model is numbered at 2 o'clock, and first byte of transmitting is represented inbound port number etc.
(Target Blade TB), is used for the query conversion table to transmit the address information that comprises exit plate in the head at least.Wherein, when system's middle outlet plate more after a little while, the TB here is directly as purpose FE information inquiry conversion table; When system's middle outlet plate more for a long time, excessive for preventing conversion table, destination address field (DAF) in the conversion table adopts purpose forwarding model numbering, then the TB in the forwarding head is used to find out the linear correspondence table between oralia address and the forwarding model, acquisition forwarding model numbering is numbered as purpose FE information inquiry conversion table with this forwarding model again.
Below with FE agency by physical interface A receiving data frames, and by physical interface B transmission Frame, and system's middle outlet plate is less, purpose FE information field in the conversion table is that TB is an example, the retransmission method of realizing by the FE agency among the present invention is described, this method flow specifically comprises the steps: as shown in figure 11
In this step, the content that mainly comprises territory He each territory included in the forwarding head of purpose forwarding model correspondence in the transitional information, then the header content modular converter is revised the value of transmitting the domain of dependence in the head according to transitional information, for example, for employed forwarding model before the conversion is first kind of forwarding model mentioning in the prior art, for the employed forwarding model in conversion back be prior art mention second kind of forwarding model the time, the corresponding AT table index that comprises after the conversion in the forwarding head after the conversion, in addition, also the forwarding model of ID part numbering is set to represent the reservation numbering that need not to change.
Frame after step 1105, header content modular converter will be changed sends to data the equipment that connects by physical interface B after carrying out the physical interface conversion by physical interface B.
Through above-mentioned conversion, after FE receives data, can ignore the value of ID part in the frame head, directly Frame is transmitted according to the content of transmitting in the head.
More than be explanation, in concrete implementation process, can carry out suitable improvement, to adapt to the concrete needs of concrete condition method of the present invention to the specific embodiment of the invention.Therefore be appreciated that according to the specific embodiment of the present invention just to play an exemplary role, not in order to restriction protection scope of the present invention.
Claims (14)
1. a repeater system of transmitting in the control separation architecture is characterized in that, comprises in this system: retransmission unit FE agency and FE;
Described FE agency is used to connect described FE and other equipment, and at FE and/or physical interface type different with other device forwards models be not simultaneously, carry out the conversion of forwarding model and/or the conversion of physical interface type, described other equipment are FE, FE agency or switching network web plate.
2. repeater system according to claim 1 is characterized in that, further comprises in the described system: control unit CE, be used for loading conversion table the FE agency, or further load configuration information;
Described CE directly is connected with described FE agency, or is connected with described FE agency by described FE;
The conversion table that described FE agency loads according to described CE is carried out the conversion of described forwarding model.
3. repeater system according to claim 2 is characterized in that, further comprises in the described system: the FE manager is used for the CE that communicates this FE agency of FE agency configuration at pre-Assembly Phase;
Described FE manager directly is connected with described FE agency, or is connected with described FE agency by described FE.
4. repeater system according to claim 1 is characterized in that, described FE agency is arranged among the described FE, or is arranged in described other equipment, or is provided with separately.
5. a FE agency is applied to transmit in the control separation architecture, it is characterized in that, comprises among this FE agency: first physical interface, frame head information translation module and second physical interface; Wherein,
First physical interface is used to receive the data from FE, after resolving Frame is sent to frame head information translation module; And/or, be used to receive from the Frame of frame head information translation module and after encapsulating and send to described FE;
Frame head information translation module is used to receive the Frame from first physical interface and/or second physical interface, carry out the forwarding model conversion if determine needs according to the information in this Frame frame head, then carry out the frame head conversion according to the conversion table that is provided with among the agency of the information inquiry FE in the frame head, then the Frame information correspondence after the conversion is sent to second physical interface and/or first physical interface, needs carry out the forwarding model conversion if determine not according to the information in the Frame frame head that receives, and then directly send the Frame correspondence that receives to second physical interface and/or first physical interface;
Second physical interface is used to receive the data of other equipment that connect by described FE agency from described FE, after resolving Frame is sent to frame head information translation module; And/or, being used to receive from the Frame of frame head information translation module and after encapsulating and sending to described other equipment, described other equipment are FE, FE agency or switching network web plate.
6. FE agency according to claim 5 is characterized in that, further comprises among the described FE agency: communication module and list item maintenance module;
Described communication module is used for described FE agency communicates by letter with CE by it, or further communicates by letter with the FE manager;
The list item maintenance module is used for loading and safeguard conversion table by the list item relevant information of communication module reception from CE.
7. FE agency according to claim 6 is characterized in that, further comprises among this FE agency: configuration module is used for obtaining the configuration of FE being acted on behalf of from the configuration information execution of CE by communication module.
8. transmit the data forwarding method of controlling in the separation architecture for one kind, it is characterized in that this method comprises: outlet and/or inlet at FE are provided with the FE agency, and this FE agency connects FE and other equipment;
When FE agency determines its FE that connects and/or physical interface type different with described other device forwards models not simultaneously, carry out the conversion of forwarding model and/or the conversion of physical interface type, described other equipment are that FE, FE act on behalf of or the switching network web plate.
9. method according to claim 8 is characterized in that, the described conversion of carrying out forwarding model comprises:
After described FE acts on behalf of the Frame that receives from described FE or described other equipment, obtain transitional information according to the conversion table that is provided with among exit plate address information in the frame head and the described FE agency, and carry out the conversion of header content according to transitional information, send the Frame after the conversion then.
10. method according to claim 9 is characterized in that described conversion table comprises the corresponding relation of purpose FE information and transitional information; Described purpose FE information is the address information of purpose FE place exit plate or the forwarding model of purpose FE;
When then described purpose FE information is the forwarding model of purpose FE, describedly obtains transitional information according to the conversion table that is provided with among the exit plate address information in the frame head and the described FE agency and comprise:
Inquire the linear correspondence table of oralia address and forwarding model according to the exit plate address information in the frame head, obtain the forwarding model of purpose FE, inquire about described conversion table according to the forwarding model of purpose FE then and obtain transitional information.
11. method according to claim 10 is characterized in that, comprises in the described conversion table: the corresponding relation of conversion table index, exit plate address information and transitional information; Then in the frame head of described Frame and send in the conversion table of FE of this Frame all that correspondence is provided with described conversion table index;
After then described FE agency receives Frame, obtain transitional information according to the conversion table index in the frame head, exit plate address information and described conversion table.
12. method according to claim 9 is characterized in that, comprises in the described Frame frame head: the forwarding model type of this Frame correspondence; Then described FE agency is according to the exit plate address information in this forwarding model type parsing frame head.
13. method according to claim 12 is characterized in that, further comprise after the described conversion of carrying out forwarding model: the described forwarding model type that comprises in the described frame head is set to need not to carry out the retention of forwarding model conversion;
After then described FE agency receives Frame, judge whether the forwarding model type that comprises in the described frame head is described retention, if then directly transmit this Frame; Need carry out the conversion of forwarding model otherwise determine, carry out the conversion that described forwarding model is carried out.
14., it is characterized in that described conversion table is generated and is arranged on by CE among the described FE agency according to arbitrary described method in the claim 9 to 13.
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| CN103051567A (en) * | 2012-12-28 | 2013-04-17 | 武汉烽火网络有限责任公司 | Method for realizing non-loss interconnection between exchanged chips of different factories |
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| US20050169276A1 (en) * | 2004-02-02 | 2005-08-04 | Sylvain Monette | Adaptive router architecture enabling efficient internal communication |
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2006
- 2006-09-21 CN CN2006101272916A patent/CN101150530B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487700A (en) * | 2001-03-10 | 2004-04-07 | 华为技术有限公司 | Intercommunication deputizing device and system and method for intercommunicating networks of different protocol |
| CN1494022A (en) * | 2002-10-30 | 2004-05-05 | 华为技术有限公司 | Method accessing data bank through protocol agency mode |
| US20050169276A1 (en) * | 2004-02-02 | 2005-08-04 | Sylvain Monette | Adaptive router architecture enabling efficient internal communication |
Non-Patent Citations (3)
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| L. Yang,R. Dantu,T.Anderson,R.Gopal.RFC 3746.2004,第3和4章节，图4. * |
| 高明,王伟明.支持ForCEs的IP路由器技术研究与实现.计算机应用25 4.2005,25(4),897-899. |
| 高明,王伟明.支持ForCEs的IP路由器技术研究与实现.计算机应用25 4.2005,25(4),897-899. * |
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| CN101150530A (en) | 2008-03-26 |
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