CN109150747B - Method and device for changing service bandwidth and computer readable storage medium - Google Patents
Method and device for changing service bandwidth and computer readable storage medium Download PDFInfo
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- CN109150747B CN109150747B CN201710453193.XA CN201710453193A CN109150747B CN 109150747 B CN109150747 B CN 109150747B CN 201710453193 A CN201710453193 A CN 201710453193A CN 109150747 B CN109150747 B CN 109150747B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/36—Flow control; Congestion control by determining packet size, e.g. maximum transfer unit [MTU]
- H04L47/365—Dynamic adaptation of the packet size
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2416—Real-time traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/627—Queue scheduling characterised by scheduling criteria for service slots or service orders policing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/825—Involving tunnels, e.g. MPLS
Abstract
The application introduces a method, a device and a computer readable storage medium for changing service bandwidth, wherein the method comprises the following steps: when the service of the packet transport network is accessed to the optical transport network, configuring a virtual transmission interface for the service of the packet transport network; configuring a physical channel for the service of the packet transport network according to the bandwidth requirement of the service of the packet transport network and the current use condition of each physical channel in the optical transport network, and establishing an association relationship between the virtual transmission interface and the configured physical channel. When detecting that the bandwidth requirement of the service of the packet transport network changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the optical transport network, reconfiguring a physical channel for the service of the packet transport network, and reestablishing the association relationship between the virtual transmission interface and the reconfigured physical channel.
Description
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for changing a service bandwidth, and a computer-readable storage medium.
Background
An OTN (Optical Transport Network) is a Transport Network based on a wavelength division multiplexing technology and organized in an Optical layer. The OTN is a new generation "digital transmission system" and "optical transmission system" specified by a series of ITU-T recommendations such as g.872, g.709, g.798, and will solve the problems of no wavelength/sub-wavelength service, poor scheduling capability, weak networking capability, weak protection capability, and the like of the conventional WDM network. By combining the advantages of optical domain and electrical domain processing, OTN can provide huge transport capacity, fully transparent end-to-end wavelength/sub-wavelength connection, and carrier-grade protection, and is the optimal technology for transporting broadband large granule services.
A PTN (Packet Transport Network) is a layer provided between IP traffic and the underlying optical Transport medium. The PTN is designed aiming at the requirements of burst and statistical multiplexing transmission of packet service flow, takes the packet service as a core and supports multi-service provision, has lower overall use cost, and simultaneously has the traditional advantages of optical transmission, including high availability and reliability, efficient bandwidth management mechanism and flow engineering, convenient OAM and network management, expandability, higher safety and the like.
When the PTN device needs to perform reliable service delivery with large capacity, a combination mode of PTN and OTN is selected. POTN (Packet Optical Transport Network) should be produced as shown in FIG. 1 of the drawings of the specification. One OTN port has a large bandwidth, and can support configuration of multiple channels with different bandwidths, and it is sufficient to select a channel to transmit a service when the service is transmitted. When the requirement of the PTN service for bandwidth changes in the prior art, the PTN service goes through the process of deleting the reallocation, thereby causing the PTN service to be interrupted.
Disclosure of Invention
The present application mainly aims to provide a method, an apparatus, and a computer-readable storage medium for changing a service bandwidth, so as to improve the utilization rate of an OTN network bandwidth and achieve the effect of performing bandwidth adjustment without service loss.
In order to achieve the above object, the present application provides a method for changing a service bandwidth, which is applied to a main control board of a packet optical transport network, and the method includes:
when the service of the packet transport network is accessed to the optical transport network, configuring a virtual transmission interface for the service of the packet transport network;
configuring a physical channel for the service of the packet transport network according to the bandwidth requirement of the service of the packet transport network and the current use condition of each physical channel in the optical transport network, and establishing an association relationship between the virtual transmission interface and the configured physical channel.
Optionally, the method further includes:
after configuring a physical channel for the service of the packet transport network, when detecting that the bandwidth requirement of the service of the packet transport network changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the optical transport network, reconfiguring a physical channel for the service of the packet transport network again, and reestablishing the association relationship between the virtual transmission interface and the reconfigured physical channel.
Optionally, the reestablishing the association relationship between the virtual transmission interface and the reconfigured physical channel includes:
under the condition that the bandwidth requirement of the service of the packet transmission network is increased, immediately establishing an association relation between the virtual transmission interface and the reconfigured physical channel;
and under the condition that the bandwidth requirement of the service of the packet transport network is reduced, when the flow of the service message of the packet transport network is detected to be reduced, establishing the association relation between the virtual transmission interface and the reconfigured physical channel.
Optionally, the method further includes:
before configuring a physical channel for the service of the packet transport network, setting a corresponding channel code for each physical channel in the optical transport network;
when configuring a physical channel for the service of any packet transport network, adding the channel code corresponding to the configured physical channel into the service message of any packet transport network.
Optionally, the method further includes:
and the service message of the packet transport network added with the channel code is sent to the N-side single board from the main control board of the packet optical transport network through an Interlaken interface.
In addition, in order to achieve the above object, the present application further provides a device for changing a service bandwidth, which is applied to a main control board of a packet optical transport network, where the device includes:
the service configuration module is used for configuring a virtual transmission interface for the service of the packet transport network when the service of the packet transport network is accessed to the optical transport network;
and the channel configuration module is used for configuring a physical channel for the service of the packet transport network according to the bandwidth requirement of the service of the packet transport network and the current use condition of each physical channel in the optical transport network, and establishing the association relationship between the virtual transmission interface and the configured physical channel.
Optionally, the channel configuration module is further configured to:
after configuring a physical channel for the service of the packet transport network, when detecting that the bandwidth requirement of the service of the packet transport network changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the optical transport network, reconfiguring a physical channel for the service of the packet transport network again, and reestablishing the association relationship between the virtual transmission interface and the reconfigured physical channel.
Optionally, the channel configuration module is specifically configured to:
under the condition that the bandwidth requirement of the service of the packet transmission network is increased, immediately establishing an association relation between the virtual transmission interface and the reconfigured physical channel;
and under the condition that the bandwidth requirement of the service of the packet transport network becomes smaller, when the flow of the service message of the packet transport network is detected to become smaller, establishing the association relation between the virtual transmission interface and the reconfigured physical channel.
Optionally, the apparatus further comprises:
a channel coding module, configured to set a corresponding channel code for each physical channel in the optical transport network before configuring a physical channel for a service of the packet transport network; when configuring a physical channel for the service of any packet transport network, adding the channel code corresponding to the configured physical channel into the service message of any packet transport network.
In addition, to achieve the above object, the present application also provides a computer-readable storage medium storing a program for changing a traffic bandwidth;
when executed by at least one processor, cause the at least one processor to perform the steps of the above-described method for altering traffic bandwidth.
The method, the device and the computer readable storage medium for changing the service bandwidth are applied to a butt joint part of a PTN network and an OTN network, when the PTN service is accessed to the OTN network, a virtual transmission interface is distributed for the PTN service, a physical channel in the OTN network is selected according to the bandwidth requirement of the PTN service, and a service message is sent to an N-side single board through an Interlaken interface. The virtual transmission interface is a created virtual interface and is used as a service outlet, so that the direct coupling between the service and the port is removed, the service cannot be influenced by the change of the bottom layer of the service port, and the aim of lossless change of the service bandwidth is fulfilled. When the bandwidth requirement of the PTN service changes, only the physical channel in the OTN network changes, and the Interlaken interface does not change, the path on the main control board does not change, so that the deletion and reconfiguration of the service are not caused, and the service is not interrupted.
Drawings
Fig. 1 is a schematic diagram of a POTN network structure in the prior art;
fig. 2 is a flowchart of a method for changing service bandwidth according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for changing service bandwidth according to a second embodiment of the present invention;
fig. 4 is a structural diagram of a connection between the PTN side and the OTN side in the POTN network according to the third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for changing service bandwidth according to a third embodiment of the present invention;
fig. 6 is a flow chart of the basic configuration of the third embodiment of the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
A first embodiment of the present invention provides a method for changing a service bandwidth, which is applied to a main control board of a packet optical transport network, and as shown in fig. 2, the method specifically includes the following steps:
step S101: when the service of the packet transport network is accessed to the optical transport network, a virtual transmission interface is configured for the service of the packet transport network.
The virtual transmission interface is a created virtual interface and is used as a tunnel outlet of the service. The virtual transmission interface is used as a service outlet, so that the direct coupling of the service and the port is removed, the service cannot be influenced by the change of the bottom layer of the service port, and the aim of changing the service bandwidth without damage is fulfilled.
Step S102: configuring a physical channel for the service of the packet transport network according to the bandwidth requirement of the service of the packet transport network and the current use condition of each physical channel in the optical transport network, and establishing an association relationship between the virtual transmission interface and the configured physical channel.
By establishing the association relationship between the virtual transmission interface and the physical channel, the physical transmission channel can be found through one virtual transmission interface, so that the indirect association between the service and the channel is established.
Specifically, the method further comprises:
after configuring a physical channel for the service of the packet transport network, when detecting that the bandwidth requirement of the service of the packet transport network changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the optical transport network, reconfiguring a physical channel for the service of the packet transport network again, and reestablishing the association relationship between the virtual transmission interface and the reconfigured physical channel.
Further, the reestablishing the association relationship between the virtual transport interface and the reconfigured physical channel includes:
under the condition that the bandwidth requirement of the service of the packet transmission network is increased, immediately establishing an association relation between the virtual transmission interface and the reconfigured physical channel;
and when the service needs to increase the bandwidth, immediately allocating a physical channel with larger bandwidth in the optical transmission network to the service. At this time, the service packet immediately uses a physical channel with a larger bandwidth.
And under the condition that the bandwidth requirement of the service of the packet transport network is reduced, when the flow of the service message of the packet transport network is detected to be reduced, establishing the association relation between the virtual transmission interface and the reconfigured physical channel.
When the service needs to reduce the bandwidth, the flow of the service message is monitored by the U-side single board, and when the flow of the service message is monitored to be reduced, the physical channel with the smaller bandwidth in the optical transmission network is allocated to the service. In the process of transmitting the service message, if the physical channel with large bandwidth is immediately switched to the physical channel with small bandwidth, the phenomenon of traffic overload occurs, and the service message is lost. In order to avoid the above situation, the U-side board monitors the traffic of the service packet, and when it is determined that the traffic becomes smaller, a physical channel with a small bandwidth is used, thereby ensuring that the service packet is not lost.
Still further, the method further comprises:
before configuring a physical channel for the service of the packet transport network, setting a corresponding channel code for each physical channel in the optical transport network.
When configuring a physical channel for the service of any packet transport network, adding a channel code corresponding to the physical channel into the service message of any packet transport network.
In the present embodiment, the traffic of each packet transport network is distinguished by channel coding.
Still further, the method further comprises:
and the service message of the packet transport network added with the channel code is sent to the N-side single board from the main control board of the packet optical transport network through an Interlaken interface.
In the prior art, an SGMII bus is used between a main control board of a packet optical transport network and an N-side board, and in order to distinguish multiple services and ensure a rigid pipe transport of a large bandwidth of the services, in this embodiment, an Interlaken interface is used between the main control board of the packet optical transport network and the N-side board. The messages of a plurality of services can be sent to the U-side single board through the Interlaken interface, and each service is distinguished through the channel coding in the service messages, thereby solving the problem that a plurality of services share one Interlaken interface.
A second embodiment of the present invention provides a device for changing a service bandwidth, which is applied to a main control board of a packet optical transport network, and as shown in fig. 3, the device specifically includes the following components:
the service configuration module 201 is configured to configure a virtual transmission interface for a service of a packet transport network when the service of the packet transport network accesses an optical transport network.
The virtual transmission interface is a created virtual interface and is used as a tunnel outlet of the service. The virtual transmission interface is used as a service outlet, so that the direct coupling of the service and the port is removed, the service cannot be influenced by the change of the bottom layer of the service port, and the aim of changing the service bandwidth without damage is fulfilled.
A channel configuration module 202, configured to configure a physical channel for the service of the packet transport network according to the bandwidth requirement of the service of the packet transport network and the current use condition of each physical channel in the optical transport network, and establish an association relationship between the virtual transmission interface and the configured physical channel.
By establishing the association relationship between the virtual transmission interface and the physical channel, the physical transmission channel can be found through one virtual transmission interface, and the indirect association between the service and the channel is established.
Specifically, the channel configuration module 202 is further configured to:
after configuring a physical channel for the service of the packet transport network, when detecting that the bandwidth requirement of the service of the packet transport network changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the optical transport network, reconfiguring a physical channel for the service of the packet transport network again, and reestablishing the association relationship between the virtual transmission interface and the reconfigured physical channel
Further, the channel configuration module 202 is specifically configured to:
under the condition that the bandwidth requirement of the service of the packet transport network is increased, immediately establishing an incidence relation between the virtual transmission interface and the reconfigured physical channel;
and when the service needs to increase the bandwidth, immediately allocating a physical channel with larger bandwidth in the optical transmission network to the service. At this time, the service packet immediately uses a physical channel with a larger bandwidth.
Under the condition that the bandwidth requirement of the service of the packet transport network becomes smaller, when the flow of the service message of the packet transport network is detected to become smaller, establishing the association relation between the virtual transmission interface and the reconfigured physical channel;
when the service needs to reduce the bandwidth, the flow of the service message is monitored by the U-side single board, and when the flow of the service message is monitored to be reduced, the physical channel with the smaller bandwidth in the optical transmission network is allocated to the service. In the process of transmitting the service message, if the physical channel with large bandwidth is immediately switched to the physical channel with small bandwidth, the phenomenon of traffic overload occurs, and the service message is lost. In order to avoid the above situation, the U-side board monitors the traffic of the service packet, and when it is determined that the traffic becomes smaller, a physical channel with a small bandwidth is used, thereby ensuring that the service packet is not lost.
In the prior art, when configuring a service and a channel, a user needs to have a certain knowledge about various physical channels in an optical transmission network, that is, to master the bandwidth of each physical channel, whether a current device supports, which gaps remain currently, and then select the physical channel. In this embodiment, the channel configuration module 202 records the allocated gaps and the remaining bandwidth in the optical transport network, and the association relationship between each physical channel and the virtual transmission interfaces of different services. When the user needs to change the bandwidth size, only one service mark number and the expected bandwidth are issued. The corresponding virtual transmission interface is found by identifying the service mark number, a proper physical channel is selected from the existing residual resources through the expected bandwidth to carry out basic channel configuration, and the physical channel and the virtual transmission interface are established with an association relationship, thereby realizing the automatic channel allocation and change of the configuration layer.
Further, the apparatus further comprises:
a channel coding module, configured to set a corresponding channel code for each physical channel in the optical transport network before configuring a physical channel for the service of the packet transport network.
The channel coding module is further configured to add a channel code corresponding to a physical channel to a service message of any packet transport network when the physical channel is configured for a service of any packet transport network.
In this embodiment, the individual packet transport network services are distinguished by channel coding.
Furthermore, the service packet of the packet transport network added with the channel code is sent from the main control board of the packet optical transport network to the N-side board through an Interlaken interface.
In the prior art, an SGMII bus is used between a main control board and an N-side board of a packet optical transport network, and in order to distinguish multiple services and ensure a rigid pipe transport of a large bandwidth of the services, in this embodiment, an Interlaken interface is used between the main control board and the N-side board of the packet optical transport network. The messages of a plurality of services can be sent to the U-side single board through the Interlaken interface, and each service is distinguished through the channel coding in the service messages, thereby solving the problem that a plurality of services share one Interlaken interface.
A third embodiment of the present invention is a device for changing a service bandwidth, which is applied to a main control board of a POTN. As shown in fig. 4, a structure diagram of a connection between a PTN side and an OTN side in a POTN network includes: a U-side board 301, a main control board 302, and an N-side board 303. The service message on the PTN side is transmitted to the main control board 302 through the U-side board 301, channel configuration is performed in the main control board 302, and the configured service message is transmitted to the OTN network side through the N-side board 303. As shown in fig. 5, the main control board 302 specifically includes the following components:
1) The service configuration module 401 is configured to configure a virtual transmission interface for a service when the service on the PTN side is sent to the OTN side.
In order to prevent the change of the physical channel from affecting the service, and thus avoid the service deletion and reconfiguration actions caused by the change, the embodiment adds a virtual transmission interface in the service configuration module in the prior art. The virtual transmission interface is a created virtual interface and is used as a tunnel outlet of the service. When the traffic is forwarded, the chip perceives a virtual transport interface rather than an actual physical channel. The virtual transmission interface is used as a service outlet, so that the direct coupling of the service and the port is removed, the service is not influenced by the bottom layer change of the service port, and the purpose of service loss is achieved.
2) A channel configuration module 402, configured to select a suitable physical channel for the service according to the bandwidth requirement of the service and the current usage of each physical channel in the OTN network, and establish an association relationship between the virtual transmission interface and the physical channel.
The channel configuration module 402 selects the most appropriate physical channel according to the current OTN channel resource and the bandwidth condition required by the user, and configures the selected physical channel on the N-side board to configure the corresponding physical channel attribute to get through the physical channel, and associates the physical channel with the Interlaken interface. In addition, the channel configuration module 402 is further configured to obtain channel resources in the OTN, and store an association relationship between each service and the virtual transmission interface. After the channel configuration module 402 receives the bandwidth requirement configuration of the user, according to the bandwidth requirement and the channel resource condition in the OTN, an optimal physical channel is obtained through calculation and associated with the service.
By establishing the association relationship between the virtual transmission interface and the physical channel, the physical transmission channel can be found through one virtual transmission interface, and the indirect association between the service and the channel is established.
The association relationship between the virtual transmission interface and the physical channel needs to be configured in the chip, as shown in fig. 6, a basic configuration flowchart includes: the method comprises the steps of virtual transmission interface creation, physical channel configuration, waiting for configuration of a state machine and configuration of complete service information to a chip.
The service message on the PTN network side is transmitted from the main control board 302 to the N-side single board 303 through the Interlaken interface. In the prior art, an SGMII bus is used between a main control board and an N-side board of a packet optical transport network, and in order to distinguish multiple services and ensure a rigid pipe transport of a large bandwidth of the services, in this embodiment, an Interlaken interface is used between the main control board and the N-side board of the packet optical transport network. The messages of a plurality of services can be sent to the U-side single board through the Interlaken interface, and each service is distinguished through the channel coding in the service messages, thereby solving the problem that a plurality of services share one Interlaken interface.
Specifically, the channel configuration module 402 is further configured to:
after configuring a physical channel for the service, when the bandwidth requirement of the service changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the OTN network, reconfiguring a physical channel for the service, and re-establishing the association relationship between the virtual transmission interface and the reconfigured physical channel.
When the service needs to increase the bandwidth, immediately allocating a physical channel with a larger bandwidth in the OTN to the service, and adding a channel code of the physical channel with the larger bandwidth into a message of the service. At this time, the service packet immediately uses a physical channel with a larger bandwidth.
When the service needs to reduce the bandwidth, the flow of the message is monitored through the U-side single board, and when the flow of the message is monitored to be reduced, the physical channel with the smaller bandwidth in the OTN network is allocated to the service, and the channel code of the physical channel with the smaller bandwidth is added to the message of the service. In the process of transmitting the service message, if the physical channel with large bandwidth is immediately switched to the physical channel with small bandwidth, the phenomenon of traffic overload occurs, and the message is lost. In order to avoid the above situation, the U-side board monitors the traffic of the service packet, and when it is determined that the traffic becomes smaller, the physical channel with a smaller bandwidth is used, thereby ensuring that the service packet is not lost.
And after the configuration of the virtual transmission interface and the physical channel is finished, configuring an Interlaken interface for the virtual transmission interface based on the configuration of the virtual transmission interface and the physical channel. Once the virtual transmission interface is associated with a unique Interlaken interface, the service message may be transferred to the N-side board through the Interlaken interface. When the bandwidth requirement of the service changes, only the physical channel in the OTN network changes, and the Interlaken interface does not change, the path on the main control board does not change, so that the deletion and reconfiguration of the service are not caused, and the service is not interrupted.
In the prior art, when configuring a service and a channel, a user needs to know a certain amount of various physical channels in an OTN network, that is, to master the bandwidth of each physical channel, whether a current device supports the physical channel, and which gaps remain currently, and then select the physical channel. In this embodiment, the channel configuration module 402 records the allocated gaps and the remaining bandwidth in the OTN network, and the association relationship between each physical channel and the virtual transmission interfaces of different services. When the user needs to change the bandwidth size, only one service mark number and the expected bandwidth are issued. The corresponding virtual transmission interface is found through the identification of the service mark number, a proper physical channel is selected from the existing residual resources through the expected bandwidth to carry out basic channel configuration, and the physical channel and the virtual transmission interface are established into an association relationship, so that the automatic channel allocation and change of the configuration layer are realized.
3) A channel coding module 403, configured to set a corresponding channel code for each physical channel in the OTN network.
The channel coding module is further configured to add a channel code corresponding to a physical channel to a packet of any service when the physical channel is configured for any service. Each service is distinguished by adding a channel code to the message. The channel coding can be freely defined as long as a plurality of physical channels can be distinguished.
In this embodiment, the individual packet transport network services are distinguished by channel coding.
In a fourth embodiment of the present invention, a computer-readable storage medium stores a program for changing a service bandwidth;
when executed by at least one processor, the program for altering traffic bandwidth causes the at least one processor to:
when the service of the packet transport network is accessed to the optical transport network, configuring a virtual transmission interface for the service of the packet transport network;
configuring a physical channel for the service of the packet transport network according to the bandwidth requirement of the service of the packet transport network and the current use condition of each physical channel in the optical transport network, and establishing an association relationship between the virtual transmission interface and the configured physical channel.
The method, the device and the computer readable storage medium introduced in the embodiment of the invention are applied to a butt joint part of a PTN network and an OTN network, when the PTN service is accessed to the OTN network, a virtual transmission interface is distributed to the PTN service, a physical channel in the OTN network is selected according to the bandwidth requirement of the PTN service, and a service message is sent to an N-side single board through an Interlaken interface. The virtual transmission interface is a created virtual interface and is used as a service outlet, so that the direct coupling between the service and the port is removed, the service cannot be influenced by the change of the bottom layer of the service port, and the aim of lossless change of the service bandwidth is fulfilled. When the bandwidth requirement of the PTN service changes, only the physical channel in the OTN network changes, and the Interlaken interface does not change, the path on the main control board does not change, so that deletion and reconfiguration of the service are not caused, and the service cannot be interrupted.
While the present invention has been described in connection with the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (8)
1. A method for changing service bandwidth is applied to a main control board of a packet optical transport network, and the method comprises:
when the service of the packet transport network is accessed to the optical transport network, configuring a virtual transmission interface for the service of the packet transport network;
configuring a physical channel for the service of the packet transport network according to the bandwidth requirement of the service of the packet transport network and the current use condition of each physical channel in the optical transport network, and establishing an association relationship between the virtual transmission interface and the configured physical channel;
after configuring a physical channel for the service of the packet transport network, when detecting that the bandwidth requirement of the service of the packet transport network changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the optical transport network, re-configuring a physical channel for the service of the packet transport network, and re-establishing the association relationship between the virtual transmission interface and the re-configured physical channel.
2. The method for changing service bandwidth according to claim 1, wherein the reestablishing the association relationship between the virtual transport interface and the reconfigured physical channel includes:
under the condition that the bandwidth requirement of the service of the packet transport network is increased, immediately establishing an incidence relation between the virtual transmission interface and the reconfigured physical channel;
and under the condition that the bandwidth requirement of the service of the packet transport network becomes smaller, when the flow of the service message of the packet transport network is detected to become smaller, establishing the association relation between the virtual transmission interface and the reconfigured physical channel.
3. The method for changing service bandwidth according to claim 1, wherein the method further comprises:
before configuring a physical channel for the service of the packet transport network, setting a corresponding channel code for each physical channel in the optical transport network;
when configuring a physical channel for the service of any packet transport network, adding the channel code corresponding to the configured physical channel into the service message of any packet transport network.
4. The method of changing traffic bandwidth according to claim 3, wherein the method further comprises:
and the service message of the packet transport network added with the channel code is sent to the N-side single board from the main control board of the packet optical transport network through an Interlaken interface.
5. An apparatus for changing service bandwidth, applied to a main control board of a packet optical transport network, the apparatus comprising:
the service configuration module is used for configuring a virtual transmission interface for the service of the packet transport network when the service of the packet transport network is accessed to the optical transport network;
a channel configuration module, configured to configure a physical channel for the service of the packet transport network according to a bandwidth requirement of the service of the packet transport network and a current use condition of each physical channel in the optical transport network, and establish an association relationship between the virtual transmission interface and the configured physical channel;
after configuring a physical channel for the service of the packet transport network, when detecting that the bandwidth requirement of the service of the packet transport network changes, according to the changed bandwidth requirement and the current use condition of each physical channel in the optical transport network, reconfiguring a physical channel for the service of the packet transport network again, and reestablishing the association relationship between the virtual transmission interface and the reconfigured physical channel.
6. The apparatus for changing service bandwidth according to claim 5, wherein the channel configuration module is specifically configured to:
under the condition that the bandwidth requirement of the service of the packet transmission network is increased, immediately establishing an association relation between the virtual transmission interface and the reconfigured physical channel;
and under the condition that the bandwidth requirement of the service of the packet transport network is reduced, when the flow of the service message of the packet transport network is detected to be reduced, establishing the association relation between the virtual transmission interface and the reconfigured physical channel.
7. The apparatus for changing traffic bandwidth according to claim 5, wherein said apparatus further comprises:
a channel coding module, configured to set a corresponding channel code for each physical channel in the optical transport network before configuring a physical channel for a service of the packet transport network; when configuring a physical channel for the service of any packet transport network, adding the channel code corresponding to the configured physical channel into the service message of any packet transport network.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program for changing a traffic bandwidth;
the program for altering traffic bandwidth, when executed by at least one processor, causes the at least one processor to perform the steps of the method for altering traffic bandwidth of any of claims 1 to 4.
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