CN1889396A - Apparatus, System and method for realizing optical monitoring channel information transmission - Google Patents
Apparatus, System and method for realizing optical monitoring channel information transmission Download PDFInfo
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- H04J14/00—Optical multiplex systems
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Abstract
This invention relates to a device, a system and a method for channel information transmission of light monitor, in which, said method is used in a system for realizing light monitor channel information transmission applying an exchange mode including: the third layer exchange receives light monitor channel information to select suitable routes for transmitting the information based on the corresponding relation between its own port and nodes in the network, which does not set up fixed connection between the source and the target and will not occupy band width resource after the transmission so as to use the band width fully.
Description
Technical field
The present invention relates to a kind of device, system and method for information transmission of field of data exchange, relate in particular to the device, the system and method that carry out the optical monitoring channel information exchange in the wdm system.
Background technology
Along with WDM (Wavelength Division Multiplexer) system to big capacity, directions such as long distance and intellectuality develop, and are also more and more higher for the requirement of optical transport network management, big the increasing that contain much information, network topology is complicated more.This just requires the data channel of network management information that enough bandwidth must be provided, stronger routing function, and have the ability of self-adapting network change in topology.
The transmission that develops into network management information of optical transmission system provides higher bandwidth.WDM equipment then provides OSC (Opticai Supervisory Channel Optical Supervisory Channel), uses the wavelength of a special use to transmit webmaster, information such as official telephone.Be divided in the band and the outer dual mode of band according to implementation method: in-band method, OSC can obtain the amplification of image intensifer, but OSC can be subjected to the failure effect of image intensifer; Out-band method, OSC will rely on the reduction transfer rate to exchange high reception sensitivity for without image intensifer this moment, and getting speed usually is 2Mbit/s.Recently, because more highly sensitive optical device has appearred in the fast development of optical device, make the mode of being with outer OSC can adopt speed up to 155MBit/s.Planned network management information is handled system in this case, make full use of the superiority bandwidth of optical transmission system.
In the existing optical transmission system, network management information transmits passage and has adopted traditional circuit switching method to realize.The General System structure of these class methods as shown in Figure 1, mainly by channel switch device 101, control device 102, apparatus for multiplexing and demultiplexing 103, other light service apparatus 104 and various information channel (ECC (logical data passage), DCN (data communication network), OSC or the like) constitute.Among the figure, control device is by CI (optical transmission equipment control monitoring interface) management apparatus for multiplexing and demultiplexing 103 and other light service apparatus 104; And realize mutual between control device 102 and the channel switch device 101 by I_NNI (internal network interface); Channel switch device 101 is responsible for handling from OSC, E_NNI (external network interface), the Various types of data of I_NNI; Logical links between the channel switch device of each network element is ECC, and it can be respectively realized to the OSC of MPI (main path interface) or the E_NNI that is connected to DCN by tandem.
Existing this kind equipment has adopted traditional circuit exchange mode to realize the channel switch device.The problem of doing like this is that circuit switching is connection-oriented, connects in case foundation no matter whether data are arranged transmitting, all will occupy certain bandwidth, can not make full use of bandwidth resources.And its connected mode is more fixing, and each change connects all must aspect the adaptation flexible net topology limitation being arranged, also be unfavorable for the expansion of exchange capacity through removing the process that connects and connect.
In order to make full use of bandwidth, occurred in the recent period two layers of exchange of Ethernet are applied to technology in the Optical Supervisory Channel.The general structure of this technology is still similar with Fig. 1.But channel switch device 101 has adopted the Ethernet Layer 2 switch to realize.Owing to adopted ethernet switch technology, this scheme can obtain 100Mbit/s even higher bandwidth at Optical Supervisory Channel.But owing to be operated in the second layer, this exchanged form is based on that the data-link layer address of each node realizes, does not possess routing function.For switch,, then must use broadcast packet to obtain destination address if source node can't provide the data-link layer address of the destination node of forwarding.Can reduce bandwidth like this, and cause broadcast storm easily.Under and the situation that occurs changing complicated in network topology, by software protocol for example Spanning-Tree Protocol suppress network storm and adapt to the variation of network topology, flexibility is relatively poor.Owing to the exchanges data that can not handle between the different IP subnet, extensibility is also relatively poor simultaneously.
In this case, adopting three layer-switching technologies or more high-rise switching technology is reasonable selection.Three layer-switching technologies, because of the 3rd layer of being operated in the OSI seven layer network master patterns gained the name, the route notion is introduced in three layers of exchange on the basis of two layers of exchange, it is excessive and can not handle the defective of different sub-network effectively to solve two layers of exchange broadcast domain, has kept the advantages of two layers of high forward efficiency of exchange simultaneously again.On the other hand, obtained a large amount of application in modern network management ICP/IP protocol.ICP/IP protocol has stronger flexibility and opening, and three layers of exchange that employing can the process IP agreement can make full use of these advantages.
In addition, in this case, adopting MLST also is reasonable selection.MLST is meant the network model according to OSI, with the basis that is exchanged for of data link layer, the technology that exchanges on different levels.MLST comprises second layer exchange, the 3rd layer of exchange, and the 4th layer of exchange that occurs recently and layer 7 exchange.Use at present many be the 3rd layer of exchange and second layer exchange.The multilayer exchange is a kind of packet switching, has efficiently, and is stable, is easy to expansion or the like characteristics, is applicable to building network information of managing passage.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of switching method that adopts to realize method and system thereof that optical monitoring channel information transmits, and is of the prior art under-utilized and be connected relatively more mechanical shortcoming for bandwidth chahnel to overcome.
To achieve these goals, the invention provides a kind of channel switch device of realizing that optical monitoring channel information transmits, this device links to each other with control device by internal network interface, be connected with data transmission network and NM server by external network interface, and link to each other with apparatus for multiplexing and demultiplexing by Optical Supervisory Channel, described channel switch device further comprises:
Optical-electrical converter is used to receive the optical monitoring channel information from described Optical Supervisory Channel, is converted into the signal of telecommunication and is transferred to the physical layer information preprocessor;
Level translator is used to receive the optical monitoring channel information from described external network interface, and it is carried out level conversion and isolation and is transferred to described physical layer information preprocessor;
Inner level translator is used for receiving from the optical monitoring channel information of control device and being transferred to described physical layer information preprocessor by internal network interface;
Described physical layer information preprocessor is used to receive the optical monitoring channel information from described optical-electrical converter, level translator or inner level translator, after the processing of decoding, regenerating, is transferred to switch;
Described switch is third and fourth or seven layer switch, is used for the address information according to received optical monitoring channel information, selects route, exchanges or transmits;
Route generates and exchange control unit, links to each other with described switch, is used to described switch to generate and maintaining routing information.
Described layer-3 switch also comprises:
Port is used to receive the data of handling through described physical layer information preprocessor;
The Level 2 Forwarding module is connected with described port, and the data that are used for the data of handling through described physical layer information preprocessor are possessed second layer destination address are transmitted;
The 3rd layer of routing module, be connected with described Level 2 Forwarding module, be used for not possessing the data of second layer destination address for the data of handling through described physical layer information preprocessor, according to the routing iinformation that route generates and exchange control unit provides, corresponding second layer destination address is set, transfers to the Level 2 Forwarding module and transmit.
Described physical layer information preprocessor is an ethernet physical layer interface circuit, and described layer-3 switch is an IP three-tier switch,
The present invention also provides a kind of exchanged form that adopts to realize the system that optical monitoring channel information transmits, comprise the channel switch device of realizing that optical monitoring channel information transmits, this device links to each other with control device by internal network interface, be connected with data transmission network and NM server by external network interface, and link to each other with apparatus for multiplexing and demultiplexing by Optical Supervisory Channel, and described control device links to each other with apparatus for multiplexing and demultiplexing by optical transmission equipment control monitoring interface, and described device comprises again:
Optical-electrical converter is used to receive the optical monitoring channel information from described Optical Supervisory Channel, is converted into the signal of telecommunication and is transferred to the physical layer information preprocessor;
Level translator is used to receive the optical monitoring channel information from described external network interface, and it is carried out level conversion and isolation and is transferred to described physical layer information preprocessor;
Inner level translator is used for receiving from the optical monitoring channel information of control device and being transferred to described physical layer information preprocessor by internal network interface;
Described physical layer information preprocessor is used to receive the optical monitoring channel information from described optical-electrical converter, level translator or inner level translator, after the processing of decoding, regenerating, is transferred to switch;
Described switch is third and fourth or seven layer switch, is used for the address information according to received optical monitoring channel information, selects route, exchanges or transmits;
Route generates and exchange control unit, links to each other with described switch, is used to described switch to generate and maintaining routing information.
Described layer-3 switch also comprises:
Port is used to receive the data of handling through described physical layer information preprocessor;
The Level 2 Forwarding module is connected with described port, and the data that are used for the data of handling through described physical layer information preprocessor are possessed second layer destination address are transmitted;
The 3rd layer of routing module, be connected with described Level 2 Forwarding module, be used for not possessing the data of second layer destination address for the data of handling through described physical layer information preprocessor, according to the routing iinformation that route generates and exchange control unit provides, corresponding second layer destination address is set, transfers to the Level 2 Forwarding module and transmit.
Described control device further comprises:
Data collector is connected with described optical transmission equipment control monitoring interface, is used to carry out information and transmits;
Data processor is connected with described data collector, is used for the data that interface is monitored in described optical transmission equipment control are from the beginning handled;
Data encapsulation and remove wrapper is used for the form that can discern for the channel switch device through the data encapsulation of described data processor processes, sends to the channel switch device by internal network interface again.
Described data encapsulation and go wrapper also to be used for, to having the data of second layer destination address, encapsulation second layer destination address in its data format is not to having the data of second layer destination address, the address of described the 3rd layer of routing module of encapsulation in its data format.
Described physical layer information preprocessor is an ethernet physical layer interface circuit, described layer-3 switch is an IP three-tier switch, described data collector is a UART communication interface, described data processor is a CPU, and described data encapsulation is the Ethernet interface that cooperates TCP/IP with removing wrapper.
The present invention also provides a kind of exchanged form that adopts to realize the method that optical monitoring channel information transmits, and is used for adopting exchanged form to realize the system that optical monitoring channel information transmits, and comprises the steps:
Layer-3 switch receives optical monitoring channel information, according to the corresponding relation of each node in self port and the network, selects suitable route that described information is transmitted.
Described method further comprises:
Described optical monitoring channel information for possessing second layer destination address directly mails to corresponding port;
For the described optical monitoring channel information that does not possess second layer destination address, described layer-3 switch reads the layer 3 address information in the described optical monitoring channel information, select suitable route, and add corresponding second layer destination address, be forwarded to corresponding port for described optical monitoring channel information.
Described method also comprises:
Step 11, control device receive described optical monitoring channel information and handle, and need to determine the information of transmission;
Step 12 is encapsulated as the form that the channel switch device can be discerned with the described information that needs to send, and sends to the channel switch device by internal network interface again.
Described method further comprises:
Judge whether comprise second layer destination address in the described optical monitoring channel information, if having, encapsulation second layer destination address in its data format, if do not have, the address of the 3rd layer of routing module in its data format in the described layer-3 switch of encapsulation.
Described method also comprises:
Described information is forwarded to Optical Supervisory Channel or network interface, and sends out by Optical Supervisory Channel or network interface.
The present invention does not set up between source and destination and is fixedly coupled, and transmits and to finish just occupied bandwidth resource no longer of back, so can make full use of bandwidth.The MLST of being taked simultaneously, the bandwidth that can utilize system to provide more fully, the variation of dynamically adapting network topology.
Description of drawings
Fig. 1 is the general implementation that optical monitoring channel information transmits;
Fig. 2 is the functional structure chart of channel switch device;
Fig. 3 is layer 3-switched functional structure chart;
Fig. 4 is the functional structure chart of control device;
Fig. 5 finishes the flow chart that primary information is transmitted;
Fig. 6 is the system construction drawing of an embodiment of optical monitoring channel information transmission;
Fig. 7 is the system construction drawing of an embodiment of optical monitoring channel information transmission;
Fig. 8 is the system construction drawing of an embodiment of optical monitoring channel information transmission;
Fig. 9 is the structure chart of an embodiment of channel switch device;
Figure 10 is the structure chart that the channel switch device adopts a layer 3-switched embodiment;
Figure 11 is the structure chart of an embodiment of the 3rd layer of switch;
Figure 12 is the structure chart of an embodiment of control device;
Figure 13 is the flow chart of an embodiment of implementation method of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail.
Figure 1 shows that the system construction drawing of realizing that optical monitoring channel information transmits, the present invention improves the internal structure of system and device on the basis of this general structure, adopts MLST to realize the transmission of optical monitoring channel information.
As shown in Figure 2, be the functional structure chart of channel switch device of the present invention.With reference to figure 1, this channel switch device 101 comprises layer-3 switch 211, physical layer information preprocessor 212, and optical-electrical converter 213, level translator 214, inner level translator 215, route generates and exchange control unit 216.Wherein, the 3rd layer of interchanger 211 can be to meet the more high-rise interchanger of OSI network model, for example the 4th layer switch or layer 7 switch, and its basic principle and present embodiment are similar.When having the signal of optical monitoring channel information to transmit, optical-electrical converter 213 receptions are somebody's turn to do from the signal of Optical Supervisory Channel (OSC) and are converted into the signal of telecommunication, perhaps level translator 214 receives and carries out level conversion and isolation from the signal of E_NNI and to it, the signal that perhaps inner level translator 215 receives from I_NNI.213,214,215 are connected with physical layer information preprocessor 212 respectively, and 212 pairs of information from 213,214,215 of physical layer information preprocessor are decoded, and regeneration etc. offer layer-3 switch 211 after handling.Exchange and transmit by the information of layer-3 switch separate sources.Layer-3 switch generates with route and is connected with exchange control unit 216, and its switch-activity is subjected to the control of route generation and exchange control unit 216.
Figure 3 shows that layer 3-switched functional structure chart in the channel switch device.Each port 301,302,303 is used to receive and send the packet from physical layer information preprocessor 212.If packet has comprised the second layer address of determining, then directly transmit in Level 2 Forwarding module 312.For what can't directly transmit, then be forwarded to the 3rd layer of routing module 313 and handle.Come handle packet by the 3rd layer of routing module according to the routing iinformation that route generates and exchange control unit 216 provides, rational second layer address is set, and give Level 2 Forwarding module 312 and transmit.
Figure 4 shows that the functional structure chart of control device.This control device 102 comprises data encapsulation and removes wrapper 421, data processor 422 and data collector 423.Data collector 423 connects CI, and the information of being responsible between processing controller 102 and the CI transmits.Data processor 422 is connected with data collector 423, after the data of CI are handled from the beginning, the information that needs send is transferred to data encapsulation and gone wrapper 421 to be encapsulated as the form that channel switch device 101 can be discerned, wherein, data processor 422 also need judge whether to know the second layer destination address of transmission information.If know, data encapsulation and go wrapper 421 directly to fill second layer destination address in data format then if do not know, is then filled corresponding the address of three layers of routing module in data format.Be converted to the manipulable data packet format of switch.Send channel switch device 101 to by I_NNI again.From the information of channel switch device 101, then by data encapsulation and go wrapper 421 to become data processor 422 manageable forms.
From the structure of Fig. 3, Fig. 4 as can be seen, only when data can't directly be carried out two layers of forwarding, just give three layers route device and handle.And can repeatedly transmit after one time route is handled, take into account high bandwidth and flexibility.Can also simplify three layers of module in some cases, constitute simple two layers of switching system, save cost greatly.
More than be that employing switching technology of the present invention realizes the system configuration that optical monitoring channel information transmits, the present invention is based on the method for the optical monitoring channel information transmission of said system structure below in conjunction with the accompanying drawing introduction.
Figure 5 shows that Optical Supervisory Channel information is sent to the flow chart of channel switch device from control device, now cooperates Fig. 1～Fig. 4 to be described as follows:
OSC information is sent to the control device 102 of local network element by CI from other network elements, what then control device 102 at first carried out is the step of data collection and processing, and promptly the data processor 422 in the control device 102 receives from the data of CI by data collector 423 and handles (step 501).Subsequently, the information that the data processor 422 in the control device 102 will need to send sends data encapsulation to and removes wrapper 421, judges simultaneously whether comprise the second layer address of purpose, is called for short second layer destination address.If comprise, then directly in data format, fill second layer destination address, if do not comprise, then in data format, fill the address of corresponding the 3rd layer of routing module.Be converted to channel switch device 101 manipulable data packet formats (step 502).
Layer-3 switch 211 exchanges according to the corresponding relation of each node in self port and the network, selects suitable port that packet is transmitted (step 504).Packet for possessing clear and definite second layer destination address directly mails to corresponding ports by Level 2 Forwarding module 312; And can't directly transmit, then deliver to the 3rd layer of routing module 313 and handle, the layer 3 address information of this module read data packet is selected suitable route, and the second layer address information of correspondence inserted packet, again packet is gone to Level 2 Forwarding module 312 and transmit.And set up identification, when the packet of identical destination address enters switch once more, just can improve the efficient of exchange directly by the Level 2 Forwarding resume module to this path.The route of the 3rd layer of routing module generates and safeguards by route generation and exchange control unit 216 and handles.This forwarding is not set up between source and destination and is fixedly coupled, and transmits and to finish just occupied bandwidth resource no longer of back, so can make full use of bandwidth.Route generates and exchange control unit 216 can dynamically obtain network topology by the data message of resolving in the layer-3 switch, realizes Route Selection or blocking-up loop, and can monitor the operating state of switch.
After choosing the port of transmission, packet enters E_NNI by the conversion of physical layer process and level translator 214, perhaps enters I_NNI by physical layer process and inner level translator 215, perhaps enter OSC, transmit accordingly (step 505) by optical-electrical converter 213.Subsequently, packet is by OSC or NNI be sent out (step 506).The packet that is transmitted enters the channel switch device of next node, exchanges once more (step 507).Through once or the repeatedly transmission and the exchange of above-mentioned steps, the packet device (step 508) that achieves the goal.This destination device can be a control device, also can be NM server.
Below, describe the present invention in detail, see also the system construction drawing of Fig. 6 for first embodiment of optical monitoring channel information transmission of the present invention by specific embodiment.Adopted optical fiber multiplexing mode and DCN network to transmit optical monitoring channel information simultaneously.
As shown in the figure, the optical monitoring channel information between the different network elements can be that optical cable between the network element transmits by main channel MPI, also can pass through network interface NNI, transmits via data communication network DCN.Ethernet electrical interface 610,6101 among the figure is the E_NNI shown in the corresponding diagram 1, and this interface is connected with DCN, network management workstation 609 respectively by Ethernet cable.Three layers of switch 601 of IP are corresponding to channel switch device 101, and electrical interface 611 is electrically connected by backboard and links to each other the control device 102 in these network element control processing unit 602 corresponding diagram 1 with network element control processing unit 602 in the plate of this device.Backboard is electrically connected corresponding I_NNI.Also can adopt the standard ethernet electrical interface to realize I_NNI in the practical application.Network element control processing unit 602 passes through business device 604 in the serial bus management network element, the corresponding CI of this bus.Be apparatus for multiplexing and demultiplexing 103 and close branch wave device 603, other light service apparatus 104 in the network element in business device 604 corresponding diagram 1.Wherein, closing branch wave device 603 is connected with the main optical path interface of other network elements by optical cable.
Fig. 7 is the system construction drawing of another embodiment of optical monitoring channel information transmission of the present invention.Optical monitoring channel information between this routine network element only transmits by main channel MPI, just only utilizes the optical fiber multiplexing mode to transmit by the optical cable between network element.Ethernet electrical interface 710 is corresponding E_NNI among the figure, and connects network management workstation 709 by Ethernet cable.Three layers of switch of IP, 701 respective channels switches, this device are electrically connected by electrical interface 711 in the plate and backboard and connect network element control processing unit 702, the control device 102 in these network element control processing unit 702 corresponding diagram 1.Backboard is electrically connected corresponding I_NNI.Also can adopt the Ethernet electrical interface of standard to realize I_NNI in actual applications.Network element control processing unit 702 passes through business device 704 in the serial bus management network element, the corresponding CI of this universal serial bus.And close the corresponding apparatus for multiplexing and demultiplexing 703 of branch wave device, business device 704 corresponding other light service apparatus 104 in the network element.Wherein, closing branch wave device 703 is connected with the main optical path interface of other network elements by optical cable.
Fig. 8 is the system construction drawing of an embodiment again that optical monitoring channel information of the present invention transmits.In this embodiment, the optical monitoring channel information between the network element does not transmit by main channel MPI, only inserts DTN DCN by Ethernet cable and transmits.Ethernet electrical interface 810,8101,8102 and E_NNI correspondence among the figure are connected with network management workstation 809, DTN DCN respectively by Ethernet cable.Three layers of switch of IP, 801 respective channels switches 101, this device are electrically connected by electrical interface 811 in the plate and backboard and connect network element control processing unit 802, the control device 102 in these network element control processing unit 802 corresponding diagram 1.Backboard is electrically connected corresponding I_NNI.I_NNI also can adopt the Ethernet electrical interface of standard to realize in actual applications.Network element control processing unit 802 passes through business device 804 in the serial bus management network element, the corresponding CI of this universal serial bus.And close branch wave device 803 corresponding apparatus for multiplexing and demultiplexing 103, business device 804 corresponding other light service apparatus 104 in the network element.
Fig. 9 is the embodiment that the channel switch device is reduced to layer 2 switch.Layer-3 switch 211 replaces with layer 2 switch 911, replacing route by Spanning-Tree Protocol 916 generates and exchange control unit 216, by ethernet physical layer interface circuit 912 corresponding physical layer information preprocessors 212, optical transceiver 913 corresponding optical-electrical converters 213, level conversion and buffer circuit 914,915 corresponding level translator 214 and inner level translators 215.Signal 0 via OSC is the 100Base-FX light signal, be converted into the signal of telecommunication by optical transceiver 913, handle through ethernet physical layer interface circuit 912 again, be converted into the IP packet, offer layer 2 switch 911 exchanges, switch exchanges according to the target MAC (Media Access Control) address in the packet, and the packet after the exchange is sent from each port of switch again.The exchange of switch is subjected to the control of Spanning-Tree Protocol 916, to avoid forming loop.And the change of topology that can self-adapting network.
Figure 10 is that the channel switch device adopts layer 3-switched example structure figure.IP three-tier switch 1011 corresponding layer-3 switch 211, dynamic routing protocol 1016 corresponding routes generate and exchange control unit 216, ethernet physical layer interface circuit 1012 corresponding physical layer information preprocessors 212, optical transceiver 1013 corresponding optical-electrical converters 213, level conversion and buffer circuit 1014 corresponding level translators 214, inner level shifting circuit 1015 corresponding inner level translators 215.Signal 0 via OSC is the 100Base-FX light signal, is converted into the signal of telecommunication by optical transceiver 1013, handles through ethernet physical layer interface circuit 1012 again, is converted into the IP packet, offers 1011 exchanges of IP three-tier switch.For purpose and the source packet of same network segment mutually, switch exchanges according to the target MAC (Media Access Control) address in the packet, and for the packet of different segment, then according to the IP address of packet, exchange according to routing table, the packet after the exchange is sent from each port of switch again.The routing table of switch is to be produced and safeguarded by dynamic routing protocol 1016.
Figure 11 is the structure chart of a kind of embodiment of the 3rd layer of switch 211.Port one 101,1102,1103 corresponding ports 301,302,303, two layers of forwarding module of Ethernet, 1104 corresponding Level 2 Forwarding modules 312, three layers of routing module of IP, 1105 corresponding the 3rd layer of routing module 313.If provide the data-link layer address of purpose from the Ethernet data bag of port, directly transmitted by two layers of forwarding module 1104 of Ethernet; If the data-link layer address of default gateway is provided, then goes to three layers of routing module of IP 1105 and handle.The 3rd layer of destination address that three layers of routing module 1105 of IP provide according to packet selected suitable route according to routing table, regenerates the destination address information of packet, gives two layers of forwarding module 1104 of Ethernet again and transmits.And set up the corresponding relation of the address of port, the packet that this address is arranged later on again is with regard to direct two layers of forwarding.
Figure 12 is the structure chart of a kind of embodiment of control device.UART communication interface 1223 corresponding data transceivers 423, CPU1222 corresponding data processor 422, and ICP/IP protocol and Ethernet interface 1221 have constituted data encapsulation and remove wrapper 421, the corresponding CI of universal serial bus, the corresponding I_NNI of Ethernet cable.S represents the control information from the monitoring information of equipment and whereabouts equipment, and P represents the packet that transmits between channel switch device and the control device.
Figure 13 is the flow chart of a kind of embodiment of the implementation method of Fig. 5.Based on channel switch device shown in Figure 2 and control device shown in Figure 10, adopt conventional method shown in Figure 5 to carry out the process that information transmits, be described as follows:
Other network elements transmit the control device 102 that OSC information is given local network element by CI, then control device 102 at first carries out data collection and treatment step, UART communication interface 1223 receives from the data of CI and transfers to CPU and handle, and produces the information (step 1301) that needs transmission.Subsequently, control device 102 carries out data transaction, and the information via ICP/IP protocol is handled, and information adds the address, and information such as verification are passed through the processing of Ethernet bottom again, are converted to Ethernet data bag (step 1302).When at the same network segment time, obtaining the MAC Address in source, be filled into packet then by the ARP bag in source and destination.Then do not fill in the MAC Address of default gateway at the same network segment when source and destination.
The Ethernet data bag through level conversion and physical layer process, enters IP three-tier switch (step 1303) through Ethernet interface.
The IP three-tier switch exchanges according to the corresponding relation of each node in self port and the network, selects suitable port that packet is transmitted.When the MAC Address in the packet satisfies the condition of directly transmitting, then directly be forwarded to corresponding ports by two layers of forwarding module.If the MAC Address correspondence is default webmaster, then deliver to three layers of routing module.Three layers of routing module according to routing table, selects suitable route to regenerate the address information of packet then according to the IP address of packet.Packet being sent back to two layers of forwarding module transmits again.The routing table of IP three-tier switch produces and safeguards (step 1304) by dynamic routing protocol.
Packet is delivered to the corresponding port of IP three-tier switch, by level translator, enters E_NNI; Perhaps enter OSC and carry out data transmissions (step 1305) by optical-electrical converter.Packet is by OSC or NNI be sent out (step 1306).Packet enters the channel switch device of next node, exchanges once more (step 1307).Through once above-mentioned or repeatedly exchange, the packet device that achieves the goal.This device can be a control device, also can be NM server.All can not find in whole network under the situation of destination device, this packet is dropped (step 1308).
The above is preferred embodiment of the present invention only, is not to be used to limit scope of patent protection of the present invention, does not get rid of and uses other embodiment that embody design of the present invention.All to the equivalence variation that the present invention did, all be contained in protection scope of the present invention.
Claims (13)
1, a kind of channel switch device of realizing that optical monitoring channel information transmits, this device links to each other with control device by internal network interface, be connected with data transmission network and NM server by external network interface, and link to each other with apparatus for multiplexing and demultiplexing by Optical Supervisory Channel, it is characterized in that described channel switch device further comprises:
Optical-electrical converter is used to receive the optical monitoring channel information from described Optical Supervisory Channel, is converted into the signal of telecommunication and is transferred to the physical layer information preprocessor;
Level translator is used to receive the optical monitoring channel information from described external network interface, and it is carried out level conversion and isolation and is transferred to described physical layer information preprocessor;
Inner level translator is used for receiving from the optical monitoring channel information of control device and being transferred to described physical layer information preprocessor by internal network interface;
Described physical layer information preprocessor is used to receive the optical monitoring channel information from described optical-electrical converter, level translator or inner level translator, after the processing of decoding, regenerating, is transferred to switch;
Described switch is third and fourth or seven layer switch, is used for the address information according to received optical monitoring channel information, selects route, exchanges or transmits;
Route generates and exchange control unit, links to each other with described switch, is used to described switch to generate and maintaining routing information.
2, device as claimed in claim 1 is characterized in that, described layer-3 switch also comprises:
Port is used to receive the data of handling through described physical layer information preprocessor;
The Level 2 Forwarding module is connected with described port, and the data that are used for the data of handling through described physical layer information preprocessor are possessed second layer destination address are transmitted;
The 3rd layer of routing module, be connected with described Level 2 Forwarding module, be used for not possessing the data of second layer destination address for the data of handling through described physical layer information preprocessor, according to the routing iinformation that route generates and exchange control unit provides, corresponding second layer destination address is set, transfers to the Level 2 Forwarding module and transmit.
3, system as claimed in claim 1 or 2 is characterized in that, described physical layer information preprocessor is an ethernet physical layer interface circuit, and described layer-3 switch is an IP three-tier switch,
4, a kind of exchanged form that adopts realizes the system that optical monitoring channel information transmits, comprise the channel switch device of realizing that optical monitoring channel information transmits, this device links to each other with control device by internal network interface, be connected with data transmission network and NM server by external network interface, and link to each other with apparatus for multiplexing and demultiplexing by Optical Supervisory Channel, and described control device links to each other with apparatus for multiplexing and demultiplexing by optical transmission equipment control monitoring interface, it is characterized in that described device comprises again:
Optical-electrical converter is used to receive the optical monitoring channel information from described Optical Supervisory Channel, is converted into the signal of telecommunication and is transferred to the physical layer information preprocessor;
Level translator is used to receive the optical monitoring channel information from described external network interface, and it is carried out level conversion and isolation and is transferred to described physical layer information preprocessor;
Inner level translator is used for receiving from the optical monitoring channel information of control device and being transferred to described physical layer information preprocessor by internal network interface;
Described physical layer information preprocessor is used to receive the optical monitoring channel information from described optical-electrical converter, level translator or inner level translator, after the processing of decoding, regenerating, is transferred to switch;
Described switch is third and fourth or seven layer switch, is used for the address information according to received optical monitoring channel information, selects route, exchanges or transmits;
Route generates and exchange control unit, links to each other with described switch, is used to described switch to generate and maintaining routing information.
5, system as claimed in claim 4 is characterized in that, described layer-3 switch also comprises:
Port is used to receive the data of handling through described physical layer information preprocessor;
The Level 2 Forwarding module is connected with described port, and the data that are used for the data of handling through described physical layer information preprocessor are possessed second layer destination address are transmitted;
The 3rd layer of routing module, be connected with described Level 2 Forwarding module, be used for not possessing the data of second layer destination address for the data of handling through described physical layer information preprocessor, according to the routing iinformation that route generates and exchange control unit provides, corresponding second layer destination address is set, transfers to the Level 2 Forwarding module and transmit.
6, system as claimed in claim 4 is characterized in that, described control device further comprises:
Data collector is connected with described optical transmission equipment control monitoring interface, is used to carry out information and transmits;
Data processor is connected with described data collector, is used for the data that interface is monitored in described optical transmission equipment control are from the beginning handled;
Data encapsulation and remove wrapper is used for the form that can discern for the channel switch device through the data encapsulation of described data processor processes, sends to the channel switch device by internal network interface again.
7, system as claimed in claim 6, it is characterized in that, described data encapsulation and go wrapper also to be used for, to having the data of second layer destination address, encapsulation second layer destination address in its data format, to not having the data of second layer destination address, the address of described the 3rd layer of routing module of encapsulation in its data format.
8, as claim 4 or 6 described systems, it is characterized in that, described physical layer information preprocessor is an ethernet physical layer interface circuit, described layer-3 switch is an IP three-tier switch, described data collector is a UART communication interface, described data processor is a CPU, and described data encapsulation is the Ethernet interface that cooperates TCP/IP with removing wrapper.
9, a kind of exchanged form that adopts realizes the method that optical monitoring channel information transmits, and is used for adopting exchanged form to realize the system that optical monitoring channel information transmits, and it is characterized in that, comprises the steps:
Layer-3 switch receives optical monitoring channel information, according to the corresponding relation of each node in self port and the network, selects suitable route that described information is transmitted.
10, method as claimed in claim 9 is characterized in that, further comprises:
Described optical monitoring channel information for possessing second layer destination address directly mails to corresponding port;
For the described optical monitoring channel information that does not possess second layer destination address, described layer-3 switch reads the layer 3 address information in the described optical monitoring channel information, select suitable route, and add corresponding second layer destination address, be forwarded to corresponding port for described optical monitoring channel information.
11, method as claimed in claim 9 is characterized in that, also comprises before the described step of claim 1:
Step 11, control device receive described optical monitoring channel information and handle, and need to determine the information of transmission;
Step 12 is encapsulated as the form that the channel switch device can be discerned with the described information that needs to send, and sends to the channel switch device by internal network interface again.
12, method as claimed in claim 11 is characterized in that, further comprises in the step 12:
Judge whether comprise second layer destination address in the described optical monitoring channel information, if having, encapsulation second layer destination address in its data format, if do not have, the address of the 3rd layer of routing module in its data format in the described layer-3 switch of encapsulation.
13, method as claimed in claim 9 is characterized in that, also comprises after the described step of claim 1:
Described information is forwarded to Optical Supervisory Channel or network interface, and sends out by Optical Supervisory Channel or network interface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2006100897192A CN1889396B (en) | 2006-07-13 | 2006-07-13 | Apparatus, System and method for realizing optical monitoring channel information transmission |
| PCT/CN2007/000682 WO2008009188A1 (en) | 2006-07-13 | 2007-03-02 | A device of realizing optical supervisory channel information transmission and a system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100897192A CN1889396B (en) | 2006-07-13 | 2006-07-13 | Apparatus, System and method for realizing optical monitoring channel information transmission |
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| CN1889396A true CN1889396A (en) | 2007-01-03 |
| CN1889396B CN1889396B (en) | 2010-06-23 |
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| WO (1) | WO2008009188A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010031274A1 (en) * | 2008-09-17 | 2010-03-25 | 中兴通讯股份有限公司 | A method and an apparatus for implementing the route of official telephone and user transparent channel |
| CN101174961B (en) * | 2007-09-14 | 2010-08-18 | 中兴通讯股份有限公司 | Consumer access interface arrangement of wavelength-division equipment |
| CN103546347A (en) * | 2013-10-31 | 2014-01-29 | 烽火通信科技股份有限公司 | Device and method for testing networking routing protocol used for NMUs |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417681B (en) * | 2019-07-30 | 2022-07-19 | 上海交通大学 | Flow control method for high-performance computer photoelectric hybrid network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1127234C (en) * | 1999-12-02 | 2003-11-05 | 深圳市中兴通讯股份有限公司 | Light monitoring channel equipment, system and implementation for wavelength division multiplexing light transmission system |
| CN1299477C (en) * | 2001-12-28 | 2007-02-07 | 中兴通讯股份有限公司 | Method for implementing multiplex line speed ATM interface in multi-layer network exchange |
| CN1514565A (en) * | 2003-07-04 | 2004-07-21 | 上海全光网络科技股份有限公司 | City region interleave multiplex system photo monitoring channel |
| KR100581061B1 (en) * | 2003-11-10 | 2006-05-22 | 한국전자통신연구원 | Apparatus for Optical Channel Overhead Switching in Optical Supervisory Channel of Optical Transport Network System and Apparatus for Optical Channel Maintenance Signal Forwarding |
| CN1780251A (en) * | 2004-11-19 | 2006-05-31 | 华为技术有限公司 | Link recognition between domains based on automatic exchange light network |
| CN100358322C (en) * | 2005-04-08 | 2007-12-26 | 杭州华三通信技术有限公司 | Method of multilayer VLAN switching |
| CN100442776C (en) * | 2005-12-06 | 2008-12-10 | 杭州华三通信技术有限公司 | Method for realizing multicast translation in three-layer switching unit |
-
2006
- 2006-07-13 CN CN2006100897192A patent/CN1889396B/en active Active
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- 2007-03-02 WO PCT/CN2007/000682 patent/WO2008009188A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174961B (en) * | 2007-09-14 | 2010-08-18 | 中兴通讯股份有限公司 | Consumer access interface arrangement of wavelength-division equipment |
| WO2010031274A1 (en) * | 2008-09-17 | 2010-03-25 | 中兴通讯股份有限公司 | A method and an apparatus for implementing the route of official telephone and user transparent channel |
| CN101360061B (en) * | 2008-09-17 | 2011-01-19 | 中兴通讯股份有限公司 | Method and apparatus implementing official telephone and customer transparent channel route |
| CN103546347A (en) * | 2013-10-31 | 2014-01-29 | 烽火通信科技股份有限公司 | Device and method for testing networking routing protocol used for NMUs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1889396B (en) | 2010-06-23 |
| WO2008009188A1 (en) | 2008-01-24 |
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