CN106911491B - Data transmission method and device - Google Patents
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000003993 interaction Effects 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/48—Routing tree calculation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
Abstract
The invention discloses a data transmission method and a data transmission device, relates to the technical field of information, and can reduce the complexity of operation and maintenance of a network. The method comprises the following steps: the data transmission architecture is applied to data transmission and comprises the following components: sending terminal equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving terminal equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to a single service carry out data interaction through the PE-OTN equipment; the method comprises the steps that a service sending end device firstly obtains data information corresponding to a service, the service sending end is a service access layer device, then the data information corresponding to the service is sent to a receiving end device through a PE-OTN device corresponding to the service, and the data receiving end is a service core network device or a service access layer device. The invention is suitable for data transmission of each service through the PE-OTN equipment.
Description
Technical Field
The present invention relates to the field of information technologies, and in particular, to a method and an apparatus for data transmission.
Background
With the development of information technology, cloud computing and data centers are widely used, and various types of new services and new applications are emerging, for example, in a metropolitan area network, there are a variety of services, including: currently, all services implement end-to-end transmission through respective independent networks, however, when each service implements end-to-end transmission through its respective network, a network manager needs to maintain and manage each network to implement normal end-to-end transmission of the service, which results in higher complexity of operating and maintaining the network.
Disclosure of Invention
The invention provides a data transmission method and a data transmission device, which can reduce the complexity of operation and maintenance of a network.
The technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a data transmission method, which is applied to a data transmission architecture, where the data transmission architecture includes: sending end equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving end equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to the single service carry out data interaction through the PE-OTN equipment; the method comprises the following steps:
a service sending terminal device acquires data information corresponding to the service, wherein the service sending terminal is a service access layer device;
and the service sending end equipment sends the data information corresponding to the service to the receiving end equipment through the PE-OTN equipment corresponding to the service, and the data receiving end is the service core network equipment or service access layer equipment.
In a second aspect, the present invention provides an apparatus for data transmission, which is applied to a data transmission architecture, where the data transmission architecture includes: sending end equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving end equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to the single service carry out data interaction through the PE-OTN equipment; the device comprises:
an obtaining unit, located in a service sending end device, for obtaining data information corresponding to the service, where the service sending end is a service access layer device;
and the sending unit is located in the service sending end device and used for sending the data information corresponding to the service to the receiving end device through the PE-OTN device corresponding to the service, and the data receiving end is the service core network device or the service access layer device.
The invention provides a method and a device for data transmission, which are applied to a data transmission architecture, wherein the data transmission architecture comprises the following steps: the data transmission architecture comprises: sending terminal equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving terminal equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to a single service carry out data interaction through the PE-OTN equipment; the method comprises the steps that a service sending end device firstly obtains data information corresponding to a service, the service sending end is a service access layer device, then the data information corresponding to the service is sent to a receiving end device through a PE-OTN device corresponding to the service, and the data receiving end is a service core network device or a service access layer device. Compared with the prior art that each service realizes end-to-end transmission through respective network, the sending end equipment corresponding to each service in the metropolitan area network of the invention sends the data information corresponding to each service to the core network equipment or the service access layer equipment of the opposite end through the convergence layer equipment consisting of the PE-OTN equipment, wherein each PE-OTN equipment can carry out information interaction without carrying out data transmission through the network of each service, namely, the data information corresponding to each service carries out data transmission through different convergence layer equipment, so that only the convergence layer equipment consisting of the PE-OTN equipment needs to be operated and maintained, the normal data transmission of each service in the metropolitan area network can be ensured, and the complexity of operating and maintaining the network can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the description of the present invention or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a block diagram of a data transmission system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of data transmission according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for data transmission according to an embodiment of the present invention;
FIG. 4 is a flow chart of another method of data transmission according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating an apparatus for data transmission according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another data transmission apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a data transmission method, which can reduce complexity of operating and maintaining a network, and is applied to a data transmission architecture, where as shown in fig. 1, the data transmission architecture includes: the data transmission architecture comprises: sending terminal equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving terminal equipment corresponding to each service, wherein the PE-OTN network comprises: and the access layer equipment corresponding to the single service and the receiving end equipment carry out data interaction through the PE-OTN equipment.
An embodiment of the present invention provides a data transmission method, which can reduce complexity of operating and maintaining a network, and as shown in fig. 2, the method includes:
201. and the service sending terminal equipment acquires data information corresponding to the service.
Wherein, the service sending end is a service access layer device.
For the embodiment of the present invention, the service sending end device includes: the access layer device of the broadband access Service, the access layer device of the mobile Service, the access layer device of the large-client Multiple Spanning Tree Protocol (MSTP) Service, and the access layer device of the data center internet Service.
202. And the service sending end equipment sends the data information corresponding to the service to the receiving end equipment through the PE-OTN equipment corresponding to the service.
The data receiving end is a service core network device or a service access layer device.
For the embodiment of the present invention, the aggregation nodes corresponding to each service respectively use the PE-OTN device for carrying, and the PE-OTN device connects the access layer device corresponding to each service with the core network device corresponding to the service or the access layer device of the opposite end.
The access layer equipment of the broadband access service and the access layer equipment of the mobile service are connected with the core network equipment corresponding to the two services through the PE-OTN equipment; and the access layer equipment of the MSTP service of the large client and the access layer equipment of the Internet service of the data center transmit information with the access layer equipment corresponding to the opposite end service corresponding to the two services through the PE-OTN equipment.
The PE-OTN equipment meets the transmission requirement of broadband uplink and IDC interconnection through the bearing capacity of a two-Layer (English full name: Layer 2, English short name: L2), and the Synchronous Digital Hierarchy (SDH) capacity of the PE-OTN meets the crossing requirement of MSTP Virtual Containers (VC) -4/12.
The data transmission method provided by the embodiment of the invention is applied to a data transmission architecture, and the data transmission architecture comprises the following steps: sending terminal equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving terminal equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to a single service carry out data interaction through the PE-OTN equipment; the method comprises the steps that a service sending end device firstly obtains data information corresponding to a service, the service sending end is a service access layer device, then the data information corresponding to the service is sent to a receiving end device through a PE-OTN device corresponding to the service, and the data receiving end is a service core network device or a service access layer device. Compared with the prior art that each service realizes end-to-end transmission through respective network, the sending end device corresponding to each service in the metropolitan area network of the embodiment of the invention sends the data information corresponding to each service to the core network device or the service access layer device of the opposite end through the convergence layer device composed of the PE-OTN devices, wherein each PE-OTN device can perform information interaction without performing data transmission through the network of each service, that is, the data information corresponding to each service is transmitted through different convergence layer devices, so that only the convergence layer device composed of the PE-OTN devices needs to be operated and maintained, and normal data transmission of each service in the metropolitan area network can be ensured, thereby reducing the complexity of operating and maintaining the network.
Another possible implementation manner in this embodiment of the present invention is, on the basis shown in fig. 2, in step 202, the service sending end device sends data information corresponding to the service to the receiving end device through the PE-OTN device corresponding to the service, where the data receiving end is a service core network device or a service access layer device, and specifically includes step 301 and step 304 shown in fig. 3.
301. And if the service is the MSTP service, the access layer equipment of the MSTP service transmits the data information corresponding to the MSTP service to the access layer equipment corresponding to the opposite end of the MSTP service through the PE-OTN equipment supporting VC crossing.
302. And if the service is the metropolitan area broadband service, the access layer equipment of the metropolitan area broadband service sends the data information corresponding to the metropolitan area broadband service to the core network equipment corresponding to the metropolitan area broadband service through the PE-OTN equipment and by utilizing the L2 VPN.
303. And if the service is the mobile service, the access layer equipment of the mobile service sends the data information corresponding to the mobile service to the core network equipment corresponding to the mobile service through the PE-OTN equipment.
304. And if the service is the data center DC service, the access layer equipment of the DC service sends the data information corresponding to the DC service to the access layer equipment of the DC service through the PE-OTN equipment.
For the embodiment of the invention, the access layer devices respectively corresponding to the MSTP service, the metropolitan area broadband service, the mobile service and the Data Center (Data Center, abbreviated in english: DC) service transmit Data information to the core network device or the access layer device of the opposite end through the PE-OTN device, and do not need to respectively transmit Data through four different networks, so that the complexity of Data transmission can be reduced.
Another possible implementation manner of the embodiment of the present invention is that, on the basis shown in fig. 2, step 202, a service sending end device sends data information corresponding to a service to a receiving end device through a PE-OTN device corresponding to the service, where the data receiving end is a service core network device or a service access layer device, and before this, step 401 shown in fig. 4 is further included, step 202, the service sending end device sends the data information corresponding to the service to the receiving end device through the PE-OTN device corresponding to the service, and the data receiving end is a service core network device or a service access layer device, which specifically includes step 402 shown in fig. 4.
401. If the service is a protocol IP service interconnected between networks, a controller of an IP service access layer and a controller of a PE-OTN equipment convergence layer determine routing information corresponding to the IP service.
For the embodiment of the present invention, an access layer device of an Internet Protocol (IP) service interconnected between networks cannot directly send data information to a core network device of the IP service through a PE-OTN device, and a controller of an IP service access layer and a controller of a PE-OTN device convergence layer are required to determine routing information corresponding to the IP service.
402. And the IP service access layer equipment sends the data information corresponding to the IP service to the core network equipment corresponding to the IP service through the PE-OTN equipment according to the routing information corresponding to the IP service.
For the embodiment of the present invention, the controllers respectively corresponding to the access layer device of the IP service and the PE-OTN convergence layer device need to acquire the routing information corresponding to the IP service, and send the data information corresponding to the IP service to the core network device corresponding to the IP service according to the routing information.
For the embodiment of the present invention, the access layer device corresponding to the IP service cannot directly perform data transmission through the PE-OTN device, and therefore, the access layer device corresponding to the IP service and the PE-OTN device can perform data transmission through the routing information by determining the routing information through the controller of the access layer and the controller of the convergence layer, so that the IP service can perform data transmission through the PE-OTN device.
Furthermore, the embodiment of the present invention provides a method for data transmission, where access layer devices respectively corresponding to an MSTP service, a metropolitan area broadband service, a mobile service, and a DC service transmit data information to a core network device or an access layer device of an opposite end through a PE-OTN device, and do not need to respectively transmit data through four different networks, so that the complexity of data transmission can be reduced; the access layer device corresponding to the IP service cannot directly transmit data through the PE-OTN device, and therefore, the access layer device corresponding to the IP service and the PE-OTN device can transmit data through the routing information by determining the routing information through the controller of the access layer and the controller of the convergence layer, so that the IP service can transmit data through the PE-OTN device.
As an implementation of the methods shown in fig. 2, fig. 3, and fig. 4, an embodiment of the present invention further provides a data transmission apparatus, which can reduce complexity of operating and maintaining a network. Architecture for data transmission, characterized in that the architecture for data transmission comprises: sending terminal equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving terminal equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to a single service carry out data interaction through the PE-OTN equipment; as shown in fig. 5, the apparatus includes: an acquisition unit 51 and a transmission unit 52.
The obtaining unit 51 is located in the service sending end device, and is configured to obtain data information corresponding to a service.
Wherein, the service sending end is a service access layer device.
The sending unit 52 is located in the service sending end device, and is configured to send the data information corresponding to the service to the receiving end device through the PE-OTN device corresponding to the service.
The PE-OTN equipment meets the transmission requirement of broadband uplink and IDC interconnection through the bearing capacity of L2, and the SDH capacity of the PE-OTN meets the VC-4/12 cross requirement of MSTP.
The data receiving end is a service core network device or a service access layer device.
Further, as shown in fig. 6, the transmitting unit 52 includes: a first sending module 521, a second sending module 522, a third sending module 523, and a fourth sending module 524.
A first sending module 521, located in an access layer device of the MSTP service, configured to send, when the service is a multiple spanning tree protocol MSTP service, data information corresponding to the MSTP service to the access layer device corresponding to the MSTP service through a PE-OTN device supporting virtual container VC intersection.
The second sending module 522 is located in an access layer device of the metro broadband service, and is configured to send, through the PE-OTN device and by using a two-layer L2 virtual private network VPN, data information corresponding to the metro broadband service to a core network device corresponding to the metro broadband service when the service is the metro broadband service.
The third sending module 523, located in an access layer device of the mobile service, is configured to send, through the PE-OTN device, data information corresponding to the mobile service to a core network device corresponding to the mobile service when the service is the mobile service.
A fourth sending module 524, located in the access layer device of the DC service, configured to send, through the PE-OTN device, data information corresponding to the DC service to the access layer device of the DC service when the service is the data center DC service.
Further, as shown in fig. 6, the apparatus further includes: the determining unit 61, the sending unit 52 further includes: and a fifth sending module 525.
The determining unit 61 is located in a controller of an IP service access layer and a controller of a PE-OTN device convergence layer, and is configured to determine, when a service is a protocol IP service interconnected between networks, routing information corresponding to the IP service.
And a fifth sending module 525, located in the IP service access layer device, configured to send, through the PE-OTN device and according to the routing information corresponding to the IP service, the data information corresponding to the IP service to the core network device corresponding to the IP service.
The data transmission device provided by the embodiment of the invention is applied to a data transmission architecture, and the data transmission architecture comprises: the data transmission architecture comprises: sending terminal equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving terminal equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to a single service carry out data interaction through the PE-OTN equipment; the method comprises the steps that a service sending end device firstly obtains data information corresponding to a service, the service sending end is a service access layer device, then the data information corresponding to the service is sent to a receiving end device through a PE-OTN device corresponding to the service, and the data receiving end is a service core network device or a service access layer device. Compared with the prior art that each service realizes end-to-end transmission through respective network, the sending end device corresponding to each service in the metropolitan area network of the embodiment of the invention sends the data information corresponding to each service to the core network device or the service access layer device of the opposite end through the convergence layer device composed of the PE-OTN devices, wherein each PE-OTN device can perform information interaction without performing data transmission through the network of each service, that is, the data information corresponding to each service is transmitted through different convergence layer devices, so that only the convergence layer device composed of the PE-OTN devices needs to be operated and maintained, and normal data transmission of each service in the metropolitan area network can be ensured, thereby reducing the complexity of operating and maintaining the network.
Furthermore, an embodiment of the present invention provides a data transmission apparatus, where access layer devices respectively corresponding to an MSTP service, a metropolitan area broadband service, a mobile service, and a DC service transmit data information to a core network device or an access layer device of an opposite end through a PE-OTN device, and do not need to respectively transmit data through four different networks, so that complexity of data transmission can be reduced; the access layer device corresponding to the IP service cannot directly transmit data through the PE-OTN device, and therefore, the access layer device corresponding to the IP service and the PE-OTN device can transmit data through the routing information by determining the routing information through the controller of the access layer and the controller of the convergence layer, so that the IP service can transmit data through the PE-OTN device.
It should be noted that, in the apparatus for data transmission provided in the embodiment of the present invention, other corresponding descriptions corresponding to each unit may refer to the corresponding descriptions in fig. 2, fig. 3, and fig. 4, and are not described herein again.
The data transmission apparatus provided in the embodiment of the present invention can implement the method embodiment provided above, and for specific function implementation, reference is made to the description in the method embodiment, which is not described herein again. The method and the device for data transmission provided by the embodiment of the invention can be suitable for data transmission of each service through the PE-OTN equipment, but are not limited thereto.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A data transmission method is applied to a data transmission architecture, and is characterized in that the data transmission architecture comprises: sending end equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving end equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to a single service carry out data interaction through the PE-OTN equipment; the service sending terminal equipment comprises: the access layer equipment of broadband access service, the access layer equipment of mobile service, the access layer equipment of large client multiple spanning tree protocol service and the access layer equipment of data center internet service; the method comprises the following steps:
a service sending terminal device acquires data information corresponding to the service, wherein the service sending terminal is a service access layer device;
if the service is a protocol IP service interconnected between networks, a controller of an IP service access layer and a controller of the PE-OTN equipment convergence layer determine routing information corresponding to the IP service;
the service sending end equipment sends the data information corresponding to the service to the receiving end equipment through the PE-OTN equipment corresponding to the service, and the data receiving end is service core network equipment or service access layer equipment corresponding to an opposite end;
the step of sending, by the service sending end device, data information corresponding to the service to the receiving end device through the PE-OTN device corresponding to the service specifically includes:
the IP service access layer equipment sends the data information corresponding to the IP service to the core network equipment corresponding to the IP service through the PE-OTN equipment according to the routing information corresponding to the IP service;
if the service is a Multiple Spanning Tree Protocol (MSTP) service, the access layer equipment of the MSTP service transmits data information corresponding to the MSTP service to the access layer equipment corresponding to the opposite end of the MSTP service through PE-OTN equipment supporting Virtual Container (VC) crossing;
if the service is a metropolitan area broadband service, the access layer equipment of the metropolitan area broadband service sends data information corresponding to the metropolitan area broadband service to core network equipment corresponding to the metropolitan area broadband service through PE-OTN equipment and by utilizing a two-layer L2 virtual private network VPN;
if the service is a mobile service, the access layer equipment of the mobile service sends data information corresponding to the mobile service to core network equipment corresponding to the mobile service through the PE-OTN equipment;
and if the service is a data center DC service, the access layer equipment of the DC service sends the data information corresponding to the DC service to the access layer equipment corresponding to the opposite end of the DC service through the PE-OTN equipment.
2. The method for data transmission according to claim 1, wherein the PE-OTN device meets the transport requirements of broadband upstream and IDC interconnection through L2 bearer capability, and the SDH capability of the PE-OTN meets the VC-4/12 cross requirement of MSTP.
3. The data transmission device is applied to a data transmission architecture, and is characterized in that the data transmission architecture comprises: sending end equipment corresponding to each service in a metropolitan area network, a layered enhanced optical access network PE-OTN network and receiving end equipment corresponding to each service, wherein the PE-OTN network comprises: the access layer equipment and the receiving end equipment corresponding to a single service carry out data interaction through the PE-OTN equipment; the device comprises:
an obtaining unit, located in a service sending end device, for obtaining data information corresponding to the service, where the service sending end is a service access layer device; the service sending terminal device includes: the access layer equipment of broadband access service, the access layer equipment of mobile service, the access layer equipment of large client multiple spanning tree protocol service and the access layer equipment of data center internet service;
a determining unit, located in a controller of an IP service access layer and a controller of the PE-OTN device convergence layer, configured to determine, when the service is a protocol IP service interconnected between networks, routing information corresponding to the IP service;
a sending unit, located in the service sending end device, configured to send data information corresponding to the service to the receiving end device through the PE-OTN device corresponding to the service, where the data receiving end is a service core network device or an access layer device corresponding to a service opposite end;
the transmission unit includes: the device comprises a first sending module, a second sending module, a third sending module, a fourth sending module and a fifth sending module;
the first sending module is located in an access layer device of the MSTP service, and is configured to send, when the service is a multiple spanning tree protocol MSTP service, data information corresponding to the MSTP service to an access layer device corresponding to an opposite end of the MSTP service through a PE-OTN device supporting virtual container VC crossing;
the second sending module is located at an access layer device of the metropolitan area broadband service, and is used for sending data information corresponding to the metropolitan area broadband service to a core network device corresponding to the metropolitan area broadband service through the PE-OTN device and by using a two-layer L2 virtual private network VPN when the service is the metropolitan area broadband service;
the third sending module is located in the access layer device of the mobile service, and is configured to send, through the PE-OTN device, the data information corresponding to the mobile service to the core network device corresponding to the mobile service when the service is the mobile service;
the fourth sending module is located in an access layer device of the DC service, and configured to send, through the PE-OTN device, data information corresponding to the DC service to an access layer device corresponding to an opposite end of the DC service when the service is a data center DC service;
and the fifth sending module is located in an IP service access layer device, and is configured to send, through the PE-OTN device and according to the routing information corresponding to the IP service, the data information corresponding to the IP service to the core network device corresponding to the IP service.
4. The apparatus for data transmission according to claim 3, wherein the PE-OTN device meets the transport requirements of broadband uplink and IDC interconnection through L2 bearer capability, and the SDH capability of the PE-OTN meets the VC-4/12 cross requirement of MSTP.
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| 《基于基础架构的PEOTN组网应用研究》;汪洲燕 等;《邮电设计技术》;20150320;第0-2节,表1,图2、5 * |
| 《面向城域综合承载的分组增强型OTN技术及应用需求研究》;简伟 等;《邮电设计技术》;20150331;全文 * |
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