WO2021012588A1 - Method and system for establishing flexible ethernet management channel - Google Patents

Abstract

Disclosed are a method and a system for establishing a flexible Ethernet management channel, which relate to the field of flexible Ethernet technology. In the present invention, it is determined whether a FlexE PHY bears valid client service flows, in combination with a configuration negotiation mechanism provided by a FlexE overhead: when no valid service flow is borne, a high-bandwidth management channel is created and management signaling is switched to the high-bandwidth management channel for transmission; when valid client service flows are borne, the management signaling is switched to a management channel configured by a user for transmission, and the high-bandwidth management channel is deleted. In addition, before part or all of the valid client service flows are deleted, management signaling is switched to an undeleted management channel configured by another user or an established high-bandwidth management channel for transmission; when all of the valid client service flows are deleted, a high-bandwidth management channel is recreated and management signaling is switched to the high-bandwidth management channel for transmission, thereby satisfying high-bandwidth occupation requirements of management signaling.

Description

Method and system for establishing flexible Ethernet management channel Technical field

The invention relates to the technical field of flexible Ethernet, in particular to a method and system for establishing a flexible Ethernet management channel.

Background technique

Flexible Ethernet (Flexible Ethernet, referred to as FlexE) is an improved network based on Ethernet. The flexible Ethernet technology supports multiple flexible rate FlexE client MAC technology by binding one or multiple Ethernet interfaces defined by the IEEE802.3 standard, and on this basis, the 66b coding block is used as the basic unit for channelization processing.

The signal alignment of each FlexE instance in the FlexE group is implemented by inserting FlexE overhead blocks into the 66b coded stream carried in the group. The FlexE overhead consists of a 66b block. On a 100G FlexE instance, a FlexE overhead block appears approximately every 13.1 microseconds. The actual format of the FlexE overhead block is repeated in the form of 8 consecutive blocks, so the period of the consecutive blocks is about 104.77 microseconds.

The FlexE overhead includes two optional management channels. One management channel is used for segment-layer management information transmission, occupying two 66b blocks (blocks 4 to 5) of each FlexE overhead frame, and the bandwidth capacity is about 1.222Mb/s; The other management channel is used for FlexE cushion management information transfer, occupying three 66b blocks of the FlexE overhead frame (blocks 6-8, no synchronization message transmission channel is configured), and the bandwidth capacity is about 1.833Mb/s.

When the newly-built network device nodes are only connected through the flexible Ethernet interface, and the FlexE Group and FlexE Client time slot mapping configuration is not done, the management channel included in the FlexE overhead frame described above needs to be used for the transmission of management signaling. Due to the limitation of the management channel bandwidth (1.222Mb/s, 1.833Mb/s), it is unable to cope with high-bandwidth occupancy scenarios such as sudden management signaling data traffic and equipment software upgrades, which becomes a bottleneck for the management of newly-built equipment nodes in the communication network.

Summary of the invention

In view of the defects in the prior art, the purpose of the present invention is to provide a flexible Ethernet management channel establishment method and system to meet the high bandwidth occupation demand of management signaling.

To achieve the above objectives, the technical solution adopted by the present invention is: a method for establishing a flexible Ethernet management channel, which includes the following steps:

When it is determined that all FlexE instances contained in the current network node's sending end do not carry valid customer service streams, select several time slots of one FlexE instance to carry FlexE Client data streams, and complete the multiplexing configuration of time slots and FlexE overhead configuration ；

At the receiving end, complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer according to the time slot information in the FlexE overhead, and establish a high-bandwidth management channel;

When the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user, switch to the high bandwidth management channel to transmit management signaling; the link cost value of the high bandwidth management channel is greater than the user When the link overhead value of the configured management channel is switched to the management channel configured by the user to transmit management signaling.

On the basis of the above solution, the method further includes the following steps: for the network node connected to the current network node, both the sending end and the receiving end select the same FlexE instance and the same time slot as the current network node for carrying FlexE Client data stream, multiplexing configuration and overhead configuration, establish a two-way high bandwidth management channel.

On the basis of the above solution, it is determined that all FlexE instances contained in the sending end of the current network node do not carry valid customer service flows, and the specific judgment criterion is: all the time of all FlexE instances contained in the sending end of the current network node The value of each field in the Calendar A/B table corresponding to the slot is 0.

On the basis of the above solution, when the link cost value of the high-bandwidth management channel is less than the link cost value of the management channel configured by the user, switching to the high-bandwidth management channel to transmit management signaling specifically includes the following steps:

The time slot bound to the first FlexE Client configured by the user and the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel are different and have no intersection, and the combination of the two is used as an intermediate configuration;

The time slot bound to the first FlexE Client configured by the user is different from the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel and has an intersection. The combination of the two is used as the intermediate configuration, and the intersection of the time slot configuration is taken as The time slot bound to FlexE Client corresponding to the high-bandwidth management channel;

The time slot bound to the first FlexE Client configured by the user is the same as the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel, or the latter includes all the former, and the FlexE Client configured by the user is changed to occupy other free time slots , The combination of the two is used as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switch request, and complete the intermediate configuration negotiation and switch.

On the basis of the above solution, when the link cost value of the high-bandwidth management channel is greater than the link cost value of the management channel configured by the user, switching to the management channel configured by the user for transmission specifically includes the following steps:

Configure the current non-working table in the Calendar A/B table as user configuration, initiate a switching request, complete user configuration negotiation and switching, delete the high-bandwidth management channel, and release the time slot resources occupied by it.

On the basis of the above solution, the method also includes the following steps: when the valid customer service flow is partially deleted, the management signaling is switched to the undeleted management channel configured by other users for transmission; when all the valid customer service flows are deleted, the high The bandwidth management channel and the management signaling is switched to the high bandwidth management channel for transmission.

On the basis of the above solution, when the effective customer service flow is partially deleted, the management signaling is switched to the undeleted management channel configured by other users for transmission, which specifically includes the following steps:

When the FlexE Client configured by the user that occupies the time slot corresponding to the FlexE PHY needs to be partially deleted, the link cost value of the related management channel of the FlexE Client to be deleted is changed to the maximum, and the management signaling is switched to the undeleted management channel configured by other users for transmission. Execute FlexE Client deletion process;

Change the FlexE Client number corresponding to several time slots of the current non-work table in the Calendar A/B table to a valid value, initiate a switch request, conduct configuration negotiation and switch.

On the basis of the above solution, when all valid customer service streams are deleted, re-creating a high-bandwidth management channel and switching the management signaling to the high-bandwidth management channel for transmission, specifically includes the following steps:

When all the FlexE Clients configured by the user occupying the time slots corresponding to the FlexE PHY are deleted, if the last deleted FlexE Client does not occupy all the time slots of the FlexE PHY, the unoccupied time slots are selected to carry the FlexE Client data stream, and the corresponding Client The number is changed to a valid value, and the collection of the corresponding time slot occupied by the FlexE PHY configured by the user to be deleted is used as the intermediate configuration;

If the last deleted FlexE Client occupies all FlexE PHY time slots, select part of the time slots to carry the FlexE Client data stream, and change its corresponding Client number to other valid values as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switching request, and perform intermediate configuration negotiation and switching.

The present invention also provides a flexible Ethernet management channel establishment system, which includes the following steps:

The time slot allocation module, which is used to: when determining that all FlexE instances contained in the sending end of the current network node do not carry valid customer service streams, select the same FlexE instance and the same time slot as the current network node for carrying FlexE Client Data stream, multiplexing configuration of time slot and FlexE overhead configuration;

The channel establishment module is used to complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer according to the time slot information in the FlexE overhead at the receiving end, and establish a high-bandwidth management channel;

The channel management module is used to switch to the high bandwidth management channel to transmit management signaling when the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user; When the link cost value of the bandwidth management channel is greater than the link cost value of the management channel configured by the user, switch to the management channel configured by the user for transmission.

On the basis of the above solution, the time slot allocation module is also used for determining that all FlexE instances included in the sending end of the network node connected to the current network node do not carry valid customer service flows, and select one of the FlexE instances A number of time slots are used to carry FlexE Client data streams, and perform time slot multiplexing configuration and FlexE overhead configuration;

The channel establishment module is also used to complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer at the receiving end of the network node connected to the current network node according to the time slot information in the FlexE overhead, and establish a high bandwidth management channel.

On the basis of the above solution, the time slot allocation module determines that all FlexE instances contained in the sending end of the current network node do not carry valid customer service streams. The specific criterion is: all FlexE instances contained in the sending end of the current network node The value of each field in the Calendar A/B table corresponding to all time slots of the example is 0.

On the basis of the above solution, the channel management module switches to the high bandwidth management channel to transmit management signaling when the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user, which specifically includes The following steps:

The time slot bound to the first FlexE Client configured by the user and the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel are different and have no intersection, and the combination of the two is used as an intermediate configuration;

The time slot bound to the first FlexE Client configured by the user is different from the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel and has an intersection. The combination of the two is used as the intermediate configuration, and the intersection of the time slot configuration is taken as The time slot bound to FlexE Client corresponding to the high-bandwidth management channel;

The time slot bound to the first FlexE Client configured by the user is the same as the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel, or the latter includes all the former, and the FlexE Client configured by the user is changed to occupy other free time slots , The combination of the two is used as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switch request, and complete the intermediate configuration negotiation and switch.

On the basis of the above solution, when the link cost value of the high-bandwidth management channel is greater than the link cost value of the user-configured management channel, the channel management module switches to the user-configured management channel for transmission, which specifically includes the following steps:

Configure the current non-working table in the Calendar A/B table as user configuration, initiate a switching request, complete user configuration negotiation and switching, delete the high-bandwidth management channel, and release the time slot resources occupied by it.

On the basis of the above solution, the channel management module is also used to: when the valid customer service flow is partially deleted, switch the management signaling to the undeleted management channel configured by other users for transmission; when the valid customer service flow is completely deleted, Re-create the high-bandwidth management channel and switch the management signaling to the high-bandwidth management channel for transmission.

On the basis of the above solution, the channel management module switches the management signaling to the non-deleted management channel configured by other users for transmission when the valid customer service flow is partially deleted, which specifically includes the following steps:

When the FlexE Client configured by the user that occupies the time slot corresponding to the FlexE PHY needs to be partially deleted, the link cost value of the related management channel of the FlexE Client to be deleted is changed to the maximum, and the management signaling is switched to the undeleted management channel configured by other users for transmission. Execute FlexE Client deletion process;

Change the FlexE Client number corresponding to several time slots of the current non-work table in the Calendar A/B table to a valid value, initiate a switch request, conduct configuration negotiation and switch.

On the basis of the above solution, the channel management module re-creates the high-bandwidth management channel and switches the management signaling to the high-bandwidth management channel for transmission when all valid customer service streams are deleted, specifically including the following steps:

When all the FlexE Clients configured by the user occupying the time slots corresponding to the FlexE PHY are deleted, if the last deleted FlexE Client does not occupy all the time slots of the FlexE PHY, the unoccupied time slots are selected to carry the FlexE Client data stream, and the corresponding Client The number is changed to a valid value, and the collection of the corresponding time slot occupied by the FlexE PHY configured by the user to be deleted is used as the intermediate configuration;

If the last deleted FlexE Client occupies all FlexE PHY time slots, select part of the time slots to carry the FlexE Client data stream, and change its corresponding Client number to other valid values as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switching request, and perform intermediate configuration negotiation and switching.

Compared with the prior art, the advantages of the present invention are:

The present invention judges whether FlexE PHY carries valid customer service flow, and combines the configuration negotiation mechanism provided by FlexE overhead: when no valid service flow is carried, a high-bandwidth management channel is created and management signaling is switched to the high-bandwidth management channel for transmission; the bearing is effective When the customer service flows, the management signaling is switched to the management channel configured by the user for transmission, and the high-bandwidth management channel is deleted. At the same time, before the effective customer service flow is partially or completely deleted, the management signaling is switched to the undeleted management channel configured by other users or the established high-bandwidth management channel for transmission; when all the effective customer service flows are deleted, the high-bandwidth management channel is recreated and Switch the management signaling to the high-bandwidth management channel for transmission to meet the high-bandwidth occupancy requirements of the management signaling.

By adopting the technical scheme provided by the present invention, high-bandwidth management channel establishment, deletion, and management signaling channel switching can be automatically completed between network nodes, and the channel where the management signaling is located is guaranteed to be lossless, meeting the high-bandwidth occupancy requirements of the management signaling. It solves the problem that the newly-built equipment node of the communication network is limited by the bandwidth of the management channel provided by the FlexE overhead, and cannot cope with the problem of high bandwidth occupation such as sudden management signaling data traffic and equipment software upgrades.

Description of the drawings

FIG. 1 is a diagram of a flexible Ethernet architecture according to an embodiment of the present invention;

2 is a schematic diagram of a flexible Ethernet overhead frame structure according to an embodiment of the present invention;

3 is a schematic flowchart of a method for establishing a flexible Ethernet management channel according to an embodiment of the present invention;

4 is a schematic structural diagram of a flexible Ethernet management channel establishment system according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an electronic device for implementing a method for establishing a flexible Ethernet management channel according to an embodiment of the present invention.

Detailed ways

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The technical solutions provided by the embodiments of the present invention can be applied to the FlexE network architecture shown in FIG. 1. The flexible Ethernet includes at least two network devices (a first network node and a second network node), which are connected through at least one flexible Ethernet interface. Network devices (for example, the first network node, the second network node, etc.) are devices with data receiving and sending functions in the flexible Ethernet, such as routers and switches that support the flexible Ethernet function. There is at least one Ethernet physical link between the first network node and the second network node.

Figure 2 is a schematic diagram of the FlexE overhead frame structure. The FlexE overhead contains two optional management channels. One management channel is used for segment-layer management information transmission, occupying two 66b blocks (blocks 4 to 5) of each FlexE overhead frame. The bandwidth capacity is about 1.222Mb/s; the other management channel is used for FlexE cushion management information transfer, occupying three 66b blocks of the FlexE overhead frame (blocks 6 to 8, no synchronization message transmission channel is configured), and the bandwidth capacity is about 1.833 Mb/s. The newly-built equipment node of the communication network is limited by the bandwidth of the management channel provided by the FlexE overhead, and cannot cope with high-bandwidth occupancy scenarios such as sudden management/control signaling data traffic and equipment software upgrades.

Referring to FIG. 3, a method for establishing a flexible Ethernet management channel in an embodiment of the present invention includes the following steps:

S1. When it is determined that all FlexE instances contained in the sending end of the current network node do not carry valid customer service streams, select several time slots of one of the FlexE instances to carry FlexE Client data streams, and use the current work of Calendar A/B table The Client number corresponding to the time slot in the table is changed to a valid value, and the multiplexing configuration of the time slot and the FlexE overhead configuration are completed;

S2, at the receiving end, complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer according to the time slot information in the FlexE overhead, and establish a high-bandwidth management channel;

S3. When the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user, switch to the high bandwidth management channel to transmit management signaling; the link cost value of the high bandwidth management channel When it is greater than the link overhead value of the management channel configured by the user, it will switch to the management channel configured by the user for transmission.

Preferably, the method further includes the following steps: for the network node connected to the current network node, both the sending end and the receiving end select the same FlexE instance and the same time slot as the current network node to carry the FlexE Client data stream , Perform multiplexing configuration and overhead configuration, and establish a two-way high-bandwidth management channel.

Preferably, the criterion for determining that all FlexE instances included in the FlexE PHY do not carry valid customer service flow is: the value of each field in the Calendar A/B table corresponding to the time slot is 0. The standard for judging the valid customer service flow carried by the FlexE instance is: the value of each field corresponding to the Calendar A/B table is the valid value specified by the standard, and the range is 1 to 0xFFFE. If all FlexE instances of FlexE PHY do not carry valid customer service streams, only low bandwidth overhead management channels are available in the FlexE PHY transmission direction.

As shown in Table 1, each time slot of Client Calendar in the transmission overhead frame of each FlexE instance included in FlexE PHY does not carry a valid client service flow, and the value of the Client Calendar field corresponding to the time slot is 0;

Table 1 Client Calendar empty configuration

Slot	Calendar A		Calendar B
0	0	0
1	0	0
2	0	0
…	…	…
17	0	0
18	0	0
19	0	0

The scenario of not carrying a valid client service flow also includes that the Client Calendar field corresponding to the time slot has a value of 0xFFFF, that is, the case where the time slot is unavailable. The embodiment of the present invention takes a common scenario as an example and does not limit it.

Preferably, several time slots of one FlexE instance of FlexE PHY are selected to carry FlexE Client data stream, and the Client number corresponding to the time slot in the current work table is changed to a valid value to complete multiplexing and overhead configuration; In the overhead, the Client Calendar information completes the Calendar demultiplexing configuration corresponding to the FlexE Shim layer and establishes a one-way management channel.

As shown in Table 2, the last time slot of the last FlexE instance of FlexE PHY is selected to carry the FlexE Client data stream, and the Client number corresponding to the time slot in Calendar A is changed to 0xFFFE to complete multiplexing and overhead configuration; According to the Client Calendar information in the overhead, the terminal completes the demultiplexing configuration of the FlexE Shim layer corresponding to the non-working Calendar, and establishes a one-way management channel.

Table 2 Initial Configuration of Client Calendar

Slot	Calendar A		Calendar B
0	0	0
1	0	0
2	0	0
…	…	…
17	0	0
18	0	0
19	0xFFFE	0

The method of selecting the last time slot of the last example of FlexE PHY and changing the Client number corresponding to the time slot in Calendar A to 0xFFFE is a preferred solution to avoid intersection with subsequent user configuration. It can also be used in actual implementation. Other legal configurations are adopted, which is not limited in the embodiment of the present invention.

Preferably, when the link overhead value of the high-bandwidth management channel is less than the link overhead value of the management channel configured by the user, switching to the high-bandwidth management channel to transmit management signaling specifically includes the following steps:

The time slot bound to the first FlexE Client configured by the user and the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel are different and have no intersection, and the combination of the two is used as an intermediate configuration;

The time slot bound to the first FlexE Client configured by the user is different from the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel and has an intersection. The combination of the two is used as the intermediate configuration, and the intersection of the time slot configuration is taken as The time slot bound to FlexE Client corresponding to the high-bandwidth management channel;

The time slot bound to the first FlexE Client configured by the user is the same as the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel, or the latter includes all the former, and the FlexE Client configured by the user is changed to occupy other free time slots , The combination of the two is used as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switch request, and complete the intermediate configuration negotiation and switch.

As shown in Table 3, Table 4, and Table 5, the user configuration creates a FlexE Client and occupies the time slot corresponding to the FlexE PHY. The first FlexE Client configured by the user is bound to the time slot bound to the FlexE Client configured by the method. The relationship is divided into three situations: different and the former contains the latter in whole or in part; different and no intersection; the same, or the latter all contains the former.

Table 3 Client Calendar user configuration 1

Slot		Calendar
0	0
1	0
2	0
…	…
16	0
17	1
18	1
19	1

Table 4 Client Calendar user configuration 2

Slot		Calendar
0	1
1	1
2	0
…	…
17	0
18	0
19	0

Table 5 Client Calendar user configuration 3

Slot		Calendar
0	0
1	0
2	0
…	…
17	0
18	0
19	1

Because the management channel established by the method described in the embodiment of the present invention only occupies one time slot, there is no scenario where the former partly includes the latter or the latter fully includes the former. There may be corresponding scenarios in actual implementation. The embodiment of the present invention is here. Not limited.

As shown in Table 6, the combination of user configuration and the method configuration is taken as the intermediate configuration, and the intersection of the timeslots takes the method configuration, that is, the client number of timeslots 17 and 18 is set to 1, and the client number of timeslot 19 is set to The value is 0xFFFE; the current non-working table in the Calendar A/B table, that is, the B table is configured as an intermediate configuration.

Table 6 Client Calendar Intermediate Configuration 1

Slot	Calendar A		Calendar B
0	0	0
1	0	0
2	0	0
…	…	…
16	0	0
17	0	1
18	0	1
19	0xFFFE	0xFFFE

As shown in Table 7, the combination of user configuration and the method configuration is used as the intermediate configuration, that is, the client number of time slot 1 and 2 is 1, and the client number of time slot 19 is 0xFFFE; in the Calendar A/B table The current non-work table, that is, table B is configured as an intermediate configuration.

Table 7 Client Calendar Intermediate Configuration 2

Slot	Calendar A		Calendar B
0	0	1
1	0	1
2	0	0
…	…	…
17	0	0
18	0	0

19

0xFFFE

0xFFFE

Preferably, when the link cost value of the high-bandwidth management channel is greater than the link cost value of the user-configured management channel, switching to the user-configured management channel for transmission specifically includes the following steps:

Configure the current non-working table in the Calendar A/B table as user configuration, initiate a switching request, complete user configuration negotiation and switching, delete the high-bandwidth management channel, and release the time slot resources occupied by it.

Preferably, the method further includes the following steps: when the valid customer service flow is partially deleted, the management signaling is switched to the undeleted management channel configured by other users for transmission; when the valid customer service flow is all deleted, the high bandwidth management channel is recreated and Switching the management signaling to the high-bandwidth management channel for transmission.

Preferably, when part of the valid customer service flow is deleted, the management signaling is switched to the undeleted management channel configured by other users for transmission, which specifically includes the following steps:

When the FlexE Client configured by the user that occupies the time slot corresponding to the FlexE PHY needs to be partially deleted, the link cost value of the related management channel of the FlexE Client to be deleted is changed to the maximum, and the management signaling is switched to the undeleted management channel configured by other users for transmission. Execute FlexE Client deletion process;

Change the FlexE Client number corresponding to several time slots of the current non-work table in the Calendar A/B table to a valid value, initiate a switch request, conduct configuration negotiation and switch.

As shown in Table 8, configure the current non-working table in the Calendar A/B table, that is, table A as user configuration, initiate a switching request, complete user configuration negotiation and switching, delete the established high-bandwidth management channel, and release the corresponding time slot Resources.

Table 8 Client Calendar user configuration 4

Slot	Calendar A		Calendar B
0	1	1

1	1	1
2	0	0
…	…	…
17	0	0
18	0	0
19	0	0xFFFE

Preferably, when all valid customer service streams are deleted, re-creating the high-bandwidth management channel and switching the management signaling to the high-bandwidth management channel for transmission, specifically includes the following steps:

When all the FlexE Clients configured by the user occupying the time slots corresponding to the FlexE PHY are deleted, if the last deleted FlexE Client does not occupy all the time slots of the FlexE PHY, the unoccupied time slots are selected to carry the FlexE Client data stream, and the corresponding Client The number is changed to a valid value, and the collection of the corresponding time slot occupied by the FlexE PHY configured by the user to be deleted is used as the intermediate configuration;

If the last deleted FlexE Client occupies all FlexE PHY time slots, select part of the time slots to carry the FlexE Client data stream, and change its corresponding Client number to other valid values as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switching request, and perform intermediate configuration negotiation and switching.

As shown in Table 9 and Table 10, the number of the last FlexE Client to be deleted is 3, which occupies 0, 1, and 2, respectively, and all time slots of FlexEPHY. The current worksheet is A.

Table 9 Client Calendar to be deleted configuration 1

Slot	Calendar A		Calendar B
0	3	0
1	3	0
2	3	0

3	0	0
…	…	…
17	0	0
18	0	0
19	0	0

Table 10 Client Calendar to be deleted configuration 2

Slot	Calendar A		Calendar B
0	3	0
1	3	0
2	3	0
3	3	0
…	…	…
17	3	0
18	3	0
19	3	0

The Client Calendar configuration to be deleted, work table selection configuration, and non-work table configuration may have multiple possibilities, which are not limited in this embodiment of the present invention.

As shown in Table 11, the idle time slot 19 is selected, its corresponding Client number is changed to 0xFFFE, and the collection with the configuration to be deleted is used as an intermediate configuration.

Table 11 Client Calendar Intermediate Configuration 3

Slot	Calendar A		Calendar B
0	3	3
1	3	3

2	3	3
3	0	0
…	…	…
17	0	0
18	0	0
19	0	0xFFFE

As shown in Table 12, the user-configured FlexE Client that occupies the time slot corresponding to the FlexE PHY is deleted, and the last FlexE Client 3 that is deleted occupies all the time slots, then the occupied time slot 19 is selected and the corresponding Client number is changed to 0xFFFE. The collection with the configuration to be deleted serves as an intermediate configuration.

Table 12 Client Calendar Intermediate Configuration 4

Slot	Calendar A		Calendar B
0	3	3
1	3	3
2	3	3
3	3	3
…	…	…
17	3	3
18	3	3
19	3	0xFFFE

There may be multiple possibilities for the selection method of the idle time slot or the occupied time slot, which is not limited in this embodiment of the present invention.

Referring to Figure 4, an embodiment of the present invention also provides a flexible Ethernet management channel establishment system, which includes the following steps:

The time slot allocation module is used to: when determining that all FlexE instances contained in the sending end of the current network node do not carry valid customer service streams, select several time slots of one of the FlexE instances to carry FlexE Client data streams. Slot multiplexing configuration and FlexE overhead configuration;

The channel establishment module is used to complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer according to the time slot information in the FlexE overhead at the receiving end, and establish a high-bandwidth management channel;

The channel management module is used to switch to the high bandwidth management channel to transmit management signaling when the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user; When the link cost value of the bandwidth management channel is greater than the link cost value of the management channel configured by the user, switch to the management channel configured by the user for transmission.

As a preferred embodiment, the time slot allocation module is also used to: when determining that all FlexE instances contained in the sending end of the network node connected to the current network node do not carry valid customer service streams, select one of the FlexE instances Several time slots are used to carry FlexE Client data streams, and perform time slot multiplexing configuration and FlexE overhead configuration;

The channel establishment module is also used to complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer at the receiving end of the network node connected to the current network node according to the time slot information in the FlexE overhead, and establish a high bandwidth management channel.

Preferably, the time slot allocation module determines that all FlexE instances contained in the sending end of the current network node do not carry valid customer service streams, and its specific determination criterion is: all the time of all FlexE instances contained in the sending end of the current network node The value of each field of the Calendar A/B table corresponding to the slot is 0.

Preferably, the channel management module switches to the high bandwidth management channel to transmit management signaling when the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user, which specifically includes the following steps:

The time slot bound to the first FlexE Client configured by the user and the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel are different and have no intersection, and the combination of the two is used as an intermediate configuration;

The time slot bound to the first FlexE Client configured by the user is different from the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel and has an intersection. The combination of the two is used as the intermediate configuration, and the intersection of the time slot configuration is taken as The time slot bound to FlexE Client corresponding to the high-bandwidth management channel;

The time slot bound to the first FlexE Client configured by the user is the same as the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel, or the latter includes all the former, and the FlexE Client configured by the user is changed to occupy other free time slots , The combination of the two is used as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switch request, and complete the intermediate configuration negotiation and switch.

Preferably, when the link cost value of the high-bandwidth management channel is greater than the link cost value of the management channel configured by the user, the channel management module switches to the management channel configured by the user for transmission, which specifically includes the following steps:

Configure the current non-working table in the Calendar A/B table as user configuration, initiate a switching request, complete user configuration negotiation and switching, delete the high-bandwidth management channel, and release the time slot resources occupied by it.

Preferably, the channel management module is further used to: when the valid customer service flow is partially deleted, switch the management signaling to the undeleted management channel configured by other users for transmission; when the valid customer service flow is all deleted, recreate the high bandwidth Manage the channel and switch the management signaling to the high-bandwidth management channel for transmission.

Preferably, the channel management module switches the management signaling to the non-deleted management channel configured by other users for transmission when the valid client service flow is partially deleted, specifically including the following steps:

When the FlexE Client configured by the user that occupies the time slot corresponding to the FlexE PHY needs to be partially deleted, the link cost value of the related management channel of the FlexE Client to be deleted is changed to the maximum, and the management signaling is switched to the undeleted management channel configured by other users for transmission. Execute FlexE Client deletion process;

Change the FlexE Client number corresponding to several time slots of the current non-work table in the Calendar A/B table to a valid value, initiate a switch request, conduct configuration negotiation and switch.

Preferably, the channel management module re-creates the high-bandwidth management channel and switches the management signaling to the high-bandwidth management channel for transmission when all valid customer service streams are deleted, specifically including the following steps:

When all the FlexE Clients configured by the user occupying the time slots corresponding to the FlexE PHY are deleted, if the last deleted FlexE Client does not occupy all the time slots of the FlexE PHY, the unoccupied time slots are selected to carry the FlexE Client data stream, and the corresponding Client The number is changed to a valid value, and the collection of the corresponding time slot occupied by the FlexE PHY configured by the user to be deleted is used as the intermediate configuration;

If the last deleted FlexE Client occupies all FlexE PHY time slots, select part of the time slots to carry the FlexE Client data stream, and change its corresponding Client number to other valid values as an intermediate configuration;

Configure the current non-working table in the Calendar A/B table as an intermediate configuration, initiate a switching request, and perform intermediate configuration negotiation and switching.

Based on the same inventive concept, the embodiments of the present invention implement all or part of the processes in the above-mentioned flexible Ethernet management channel establishment method, which can also be completed by instructing relevant hardware through a computer program, which can be stored in a computer-readable storage medium When the computer program is executed by the processor, it can implement the steps of the foregoing method embodiments. Among them, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate forms. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access Memory (RAM, Random Access Memory), electric carrier signal, telecommunications signal, software distribution medium, etc. It should be noted that the content contained in computer-readable media can be appropriately added or deleted according to the requirements of the legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to the legislation and patent practice, computer-readable media does not include Electric carrier signal and telecommunications signal.

Based on the same inventive concept, an embodiment of the present invention also provides an electronic device. As shown in FIG. 5, it includes a memory and a processor. The memory stores a computer program running on the processor. When the processor executes the computer program, a flexible Ethernet is implemented. All or part of the method steps in the method of establishing a network management channel.

The so-called processor can be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), ready-made Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The processor is the control center of the computer device, and uses various communication interfaces and lines to connect various parts of the entire computer device.

The memory may be used to store computer programs and/or modules, and the processor implements various functions of the computer device by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, where the storage program area can store the operating system, at least one application program (such as sound playback function, image playback function, etc.) required by the function; the storage data area can be stored according to the mobile phone Use the created data (such as audio data, video data, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disks, memory, plug-in hard disks, smart media cards (SMC), and secure digital (SD) cards. , Flash Card, at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may be in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

The present invention is described with reference to flowcharts and/or block diagrams of methods, devices (systems), servers, and computer program products according to embodiments of the present invention. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims (16)

1. A method for establishing a flexible Ethernet management channel is characterized by comprising the following steps:

   When it is determined that all FlexE instances contained in the current network node's sending end do not carry valid customer service streams, select several time slots of one FlexE instance to carry FlexE Client data streams, and complete the multiplexing configuration of time slots and FlexE overhead configuration ；

   At the receiving end, complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer according to the time slot information in the FlexE overhead, and establish a high-bandwidth management channel;

   When the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user, switch to the high bandwidth management channel to transmit management signaling; the link cost value of the high bandwidth management channel is greater than the user When the link overhead value of the configured management channel is switched to the management channel configured by the user to transmit management signaling.
2. The method according to claim 1, characterized in that the method further comprises the following steps: for a network node connected to the current network node, both the sending end and the receiving end select the same FlexE instance and phase as the current network node. The simultaneous slot is used to carry FlexE Client data streams, perform multiplexing configuration and overhead configuration, and establish a two-way high-bandwidth management channel.
3. The method according to claim 1, wherein said determining that all FlexE instances included in the sending end of the current network node do not carry valid customer service flows, and the specific determination criterion is: the sending end of the current network node contains The value of each field in the CalendarA/B table corresponding to all time slots of all FlexE instances is 0.
4. The method according to claim 1, wherein when the link overhead value of the high-bandwidth management channel is less than the link overhead value of the management channel configured by the user, switching to the high-bandwidth management channel to transmit management signaling, Specifically include the following steps:

   The time slot bound to the first FlexE Client configured by the user and the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel are different and have no intersection, and the combination of the two is used as an intermediate configuration;

   The time slot bound to the first FlexE Client configured by the user is different from the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel and has an intersection. The combination of the two is used as the intermediate configuration, and the intersection of the time slot configuration is taken as The time slot bound to FlexE Client corresponding to the high-bandwidth management channel;

   The time slot bound to the first FlexE Client configured by the user is the same as the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel, or the latter includes all the former, and the FlexE Client configured by the user is changed to occupy other free time slots , The combination of the two is used as an intermediate configuration;

   Configure the current non-working table in the CalendarA/B table as an intermediate configuration, initiate a switching request, and complete the negotiation and switching of the intermediate configuration.
5. The method of claim 1, wherein when the link cost value of the high-bandwidth management channel is greater than the link cost value of the management channel configured by the user, switching to the management channel configured by the user for transmission, specifically includes the following steps :

   Configure the current non-working table in the CalendarA/B table as user configuration, initiate a switching request, complete user configuration negotiation and switching, delete the high-bandwidth management channel, and release the time slot resources occupied by it.
6. The method according to claim 1, characterized in that the method further comprises the following steps: when the valid customer service flow is partially deleted, the management signaling is switched to the undeleted management channel configured by other users for transmission; the valid customer service flow is all When deleting, the high-bandwidth management channel is recreated and the management signaling is switched to the high-bandwidth management channel for transmission.
7. The method according to claim 6, characterized in that, when the valid customer service flow is partially deleted, switching the management signaling to the undeleted management channel configured by other users for transmission, specifically includes the following steps:

   When the FlexE Client configured by the user that occupies the time slot corresponding to the FlexE PHY needs to be partially deleted, the link cost value of the related management channel of the FlexE Client to be deleted is changed to the maximum, and the management signaling is switched to the undeleted management channel configured by other users for transmission. Execute FlexE Client deletion process;

   Change the FlexE Client number corresponding to several time slots in the current non-working table in the CalendarA/B table to a valid value, initiate a switching request, and perform configuration negotiation and switching.
8. 8. The method according to claim 6, wherein when all valid customer service streams are deleted, re-creating a high-bandwidth management channel and switching management signaling to the high-bandwidth management channel for transmission includes the following steps:

   When all the FlexE Clients configured by the user occupying the time slots corresponding to the FlexE PHY are deleted, if the last deleted FlexE Client does not occupy all the time slots of the FlexE PHY, the unoccupied time slots are selected to carry the FlexE Client data stream, and the corresponding Client The number is changed to a valid value, and the collection of the corresponding time slot occupied by the FlexE PHY configured by the user to be deleted is used as the intermediate configuration;

   If the last deleted FlexE Client occupies all FlexE PHY time slots, select part of the time slots to carry the FlexE Client data stream, and change its corresponding Client number to other valid values as an intermediate configuration;

   Configure the current non-working table in the CalendarA/B table as an intermediate configuration, initiate a switching request, and conduct intermediate configuration negotiation and switching.
9. A flexible Ethernet management channel establishment system is characterized in that it comprises the following steps:

   The time slot allocation module, which is used to: when determining that all FlexE instances contained in the sending end of the current network node do not carry valid customer service streams, select the same FlexE instance and the same time slot as the current network node for carrying FlexE Client Data stream, multiplexing configuration of time slot and FlexE overhead configuration;

   The channel establishment module is used to complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer according to the time slot information in the FlexE overhead at the receiving end, and establish a high-bandwidth management channel;

   The channel management module is used to switch to the high bandwidth management channel to transmit management signaling when the link cost value of the high bandwidth management channel is less than the link cost value of the management channel configured by the user; When the link cost value of the bandwidth management channel is greater than the link cost value of the management channel configured by the user, switch to the management channel configured by the user for transmission.
10. The system according to claim 9, wherein the time slot allocation module is further used to determine that all FlexE instances included in the sending end of the network node connected to the current network node do not carry valid customer service streams. Select several time slots of one of the FlexE instances to carry FlexE Client data streams, and perform multiplexing configuration of time slots and FlexE overhead configuration;

    The channel establishment module is also used to complete the demultiplexing configuration of the working time slot corresponding to the FlexE Shim layer at the receiving end of the network node connected to the current network node according to the time slot information in the FlexE overhead, and establish a high bandwidth management channel.
11. The system according to claim 9, wherein the time slot allocation module determines that all FlexE instances contained in the sending end of the current network node do not carry valid customer service streams, and the specific determination criterion is: The value of each field in the CalendarA/B table corresponding to all time slots of all FlexE instances included in the sending end is 0.
12. The system according to claim 9, wherein the channel management module switches to the high-bandwidth management channel for transmission when the link overhead value of the high-bandwidth management channel is less than the link overhead value of the management channel configured by the user Management signaling includes the following steps:

    The time slot bound to the first FlexE Client configured by the user and the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel are different and have no intersection, and the combination of the two is used as an intermediate configuration;

    The time slot bound to the first FlexE Client configured by the user is different from the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel and has an intersection. The combination of the two is used as the intermediate configuration, and the intersection of the time slot configuration is taken The time slot bound to FlexE Client corresponding to the high-bandwidth management channel;

    The time slot bound to the first FlexE Client configured by the user is the same as the time slot bound to the FlexE Client corresponding to the high-bandwidth management channel, or the latter includes all the former, and the FlexE Client configured by the user is changed to occupy other free time slots , The combination of the two is used as an intermediate configuration;

    Configure the current non-working table in the CalendarA/B table as an intermediate configuration, initiate a switching request, and complete the negotiation and switching of the intermediate configuration.
13. The system according to claim 9, wherein the channel management module switches to the user-configured management channel for transmission when the link cost value of the high-bandwidth management channel is greater than the link cost value of the user-configured management channel. Specifically include the following steps:

    Configure the current non-working table in the CalendarA/B table as user configuration, initiate a switching request, complete user configuration negotiation and switching, delete the high-bandwidth management channel, and release the time slot resources occupied by it.
14. The system according to claim 9, wherein the channel management module is further configured to: when the valid customer service flow is partially deleted, switch the management signaling to the non-deleted management channel configured by other users for transmission; When all service streams are deleted, the high-bandwidth management channel is recreated and the management signaling is switched to the high-bandwidth management channel for transmission.
15. The system according to claim 14, wherein the channel management module switches the management signaling to the non-deleted management channel configured by other users for transmission when the valid customer service flow is partially deleted, which specifically includes the following steps:

    When the FlexE Client configured by the user that occupies the time slot corresponding to the FlexE PHY needs to be partially deleted, the link cost value of the related management channel of the FlexE Client to be deleted is changed to the maximum, and the management signaling is switched to the undeleted management channel configured by other users for transmission. Execute FlexE Client deletion process;

    Change the FlexE Client number corresponding to several time slots of the current non-working table in the CalendarA/B table to a valid value, initiate a switching request, and conduct configuration negotiation and switching.
16. The system according to claim 14, wherein the channel management module re-creates the high-bandwidth management channel and switches the management signaling to the high-bandwidth management channel for transmission when all valid customer service streams are deleted. The following steps:

    When all the FlexE Clients configured by the user occupying the time slots corresponding to the FlexE PHY are deleted, if the last deleted FlexE Client does not occupy all the time slots of the FlexE PHY, the unoccupied time slots are selected to carry the FlexE Client data stream, and the corresponding Client The number is changed to a valid value, and the collection of the corresponding time slot occupied by the FlexE PHY configured by the user to be deleted is used as the intermediate configuration;

    If the last deleted FlexE Client occupies all FlexE PHY time slots, select part of the time slots to carry the FlexE Client data stream, and change its corresponding Client number to other valid values as an intermediate configuration;

    Configure the current non-working table in the CalendarA/B table as an intermediate configuration, initiate a switching request, and conduct intermediate configuration negotiation and switching.

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