CN107204941A - The method and apparatus that a kind of flexible Ethernet path is set up - Google Patents
The method and apparatus that a kind of flexible Ethernet path is set up Download PDFInfo
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- CN107204941A CN107204941A CN201610161268.2A CN201610161268A CN107204941A CN 107204941 A CN107204941 A CN 107204941A CN 201610161268 A CN201610161268 A CN 201610161268A CN 107204941 A CN107204941 A CN 107204941A
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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
- H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
- H04L47/724—Admission control; Resource allocation using reservation actions during connection setup at intermediate nodes, e.g. resource reservation protocol [RSVP]
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Abstract
The application proposes the method and apparatus that a kind of flexible Ethernet path is set up, and is related to control plane technology field, including：Receive source node transmission sets up PATH；According to it is described set up routing information and carry out local resource reserve and set up communication path；Reservation state Resv message is sent to the source node；The Resv message includes following one or more：Flexible Ethernet group #, flag bit, time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.The foundation in FlexE transport planes paths is supported using the extension of signaling, completing the resources such as port, time slot on end-to-end path on each node reserved, there is provided the function that the end-to-end FlexE LSP paths of control plane are set up.
Description
Technical field
The present invention relates to control plane technology field, and in particular to a kind of method that Ethernet path is set up and
Device.
Background technology
Flexible Ethernet (FlexE) is that there is provided a kind of general mechanism for a kind of emerging tranmission techniques
To support various existing ethernet macs (Media Access Control, medium access control) signal speed
Rate, these ethernet mac speed can mismatch existing any ethernet physical layer (Physical
Layer, PHY) speed, including those can bundle after the MAC bigger than ethernet physical layer speed
What is obtained after signal set, and those sub- speed or channelizing is smaller than ethernet physical layer speed
MAC signals.For vivider, it can regard that a kind of multilink gearbox (Multi-link) is led to as
With the realization of change.Specifically, the ability that flexible Ethernet is supported is as follows：
The binding of multiple ethernet physical layer PHY signals, say by by two 100GBASE-R
PHYs bindings get up to carry a 200G MAC signal.
Ethernet PHY physical layer signal is carried into sub- rate signal, such as, 100GBASE-R
PHY carries 50G signal.
The PHY physical signallings that channelizing or a group binding inside one PHY physical signalling are got up,
Such as, support three binding 100GBASE-R PHYs on come transmit a 150G signal and
Two 25G signals.
FlexE universal architecture example is as shown in Figure 1.FlexE groups (FlexE group) refer to one
The group got up by 1 to n bar ethernet PHYs s binding, a FlexE client refers to those bases
In the ether stream of MAC data speed, it can mismatch and what ethernet PHY stream taken office, currently can be with
Client's MAC speed of support has 10,40 or m*25Gb/s.FlexE shim (interlayer) therein
For client signal being mapped to or demapping is to FlexE group.
Currently, FlexE can support a variety of applications, mainly including following three：
The first, the connection of router to transmission, as shown in Fig. 2 under this scene, transmission network is simultaneously
FlexE signals are not perceived.For concrete example, network edge device is transmitted by every 100GBASE-R
Signal is mapped to OTN (optical transfer network, OpticalTransportNetwork) OPU4 (Overhead
Processing Unit, overhead processing unit) in further transmit, transmission network edge device is simultaneously not required to
It is what to perceive FlexE tranmission techniques, and only needs to perceive binary bit stream one by one i.e.
Can.
Second, the connection of router to transmission, this scene are as shown in figure 3, transmission network is perceived
FlexE signals, transmission network edge device comes out FlexE client signal resolutions, and then re-multiplexing is arrived
Transmitted in OTN OPU4 signals.
The third, the connection of router to transmission, as shown in figure 4, under this scene, transmitting network edge
Edge equipment discards disabled time slot, and only transmits the time slot in use.
FlexE mechanism completes the encapsulation of client signal using a calendaring module (FlexE Calendar)
Mapping maps with decapsulation, is always each PHY physical signallings in FlexE group by this day
Several 66B blocks are divided into FlexE client, FlexE Calendar be according to these block of locations come
Specify which client has used which slot s lots.Specifically as shown in figure 5, in FlexE Calendar
The granularity of each 66B data blocks is 5G, so possessing 20 for each 100G PHY physical signallings
Individual slots time slot block, FlexE provides that each slot allows have two states, and one kind is that unused does not make
State, another is the unavailable shapes of unavailable that possible caused due to transmission network constraint
State.For the FlexE being made up of a n 100G signal group, FlexE Calendar's
Length is 20*n.As shown in figure 5, the block block distributed by FlexE Calendar is assigned to n
In sub-calendar, every sub- calendar sub-calendar is made up of 20 block blocks, corresponds to one
PHY signals.
FlexE networks for above-mentioned introduction come, it is necessary to control plane provides a whole set of solution
Set up the aspects such as transport plane end-to-end path, including chain-link automatic finding, route, signaling.
The content of the invention
The invention provides the method and apparatus that a kind of flexible Ethernet path is set up, it can realize that control is flat
The function that the end-to-end FlexE LSP paths in face are set up.
In order to realize foregoing invention purpose, the technical scheme that the present invention takes is as follows：
A kind of method that flexible Ethernet path is set up, applied to destination node, including：
Receive source node transmission sets up PATH；
According to it is described set up routing information and carry out local resource reserve and set up communication path；
Reservation state Resv message is sent to the source node；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
Alternatively, the Resv message also includes：RSVP jump RSVP_HOP objects,
The RSVP_HOP objects include the physical port information of correspondence physical link, the physical layer numbering
The number and sequence consensus for the physical port that the physical port of mark includes with the RSVP_HOP objects.
Alternatively, the PATH of setting up includes：General road sign label set up request object.
Alternatively, also include before sending reservation state Resv message to the source node：
PATH encapsulation RSVP_HOP objects are set up according to described,
According to the loadtype carried in loadtype G-PID, Virtual Ethernet.
Alternatively, the flexible Ethernet group # is flexible between source node and destination node for identifying
Ethernet group；
The flag bit is for identifying the schedule configuration and whether carry out time interval resource configuration that client is used；
The time slot allocation information is used to identify time slot channel allocation information in physical layer；
Physical layer numbers the physical layer for identifying Ethernet group；
Client indicator is used to identify the client in Ethernet group；
Unavailable number of time slot is used for the sequence number for identifying unavailable time slot.
In order to solve the above technical problems, the present invention also provides a kind of method that flexible Ethernet path is set up,
Applied to source node, including：
Sent to destination node and set up PATH；
Receive the reservation state Resv message that the destination node is sent；
Reserved according to Resv message progress outgoing interface time interval resource and set up communication path；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
Alternatively, the Resv message also includes：RSVP jump RSVP_HOP objects,
The RSVP_HOP objects include the physical port information of correspondence physical link, the physical layer numbering
The number and sequence consensus for the physical port that the physical port of mark includes with the RSVP_HOP objects.
Alternatively, described method also includes：Pass through the RSVP based on Traffic Engineering extensions
Fractional rate partial-rate identifiers in route display object ERO in RSVP-TE message, refer to
Surely the node of partial-rate encapsulation mapping and/or decapsulation mapping is carried out.
Alternatively, send and set up before PATH to destination node, in addition to：
The label switched path LSP ends of label switched path attribute LSP_ATTRIBUTES objects are arrived
End available time slot type-length-value TLV is added to FlexE paths and set up in Path message.
Alternatively, send and set up before PATH to destination node, in addition to：
Ethernet Ethernet physical layer PHY roads are set up by optical transfer network OTN nodes and destination node
Footpath, the signaling traffic in the flexible Ethernet FlexE paths is carried by the PHY paths.
Alternatively, send and set up before PATH to destination node, in addition to：
The signal stream that Ethernet PHY paths carry the FlexE paths is set up with the first OTN nodes
Amount, OTN Optical Channel Data Unit-k is set up between the first OTN nodes and the 2nd OTN nodes
The flexible paths of ODUFlex carry the signaling traffic in the FlexE paths, the 2nd OTN nodes with
The signaling traffic in Ethernet PHY paths carrying FlexE paths is set up between destination node.
Alternatively, when source node by it is described set up PATH and be sent to the first OTN nodes when, it is described
PATH is set up to carry by the end-to-end available time slot TLV of LSP of LSP_ATTRIBUTES objects
Each Member Link available time slot number between source node and the first OTN nodes；As the first OTN
It is described to set up road when the FlexE paths are set up Path message and are transferred to the 2nd OTN nodes by node
Footpath message carries described the by the end-to-end available time slot TLV of the LSP of LSP_ATTRIBUTES objects
Each Member Link available time slot number between one OTN nodes and the 2nd OTN nodes；When described second
OTN nodes by it is described set up PATH and be transferred to destination node when, the PATH of setting up passes through
The end-to-end available time slot TLV of the LSP of LSP_ATTRIBUTES objects carry the 2nd OTN nodes with
Each Member Link available time slot number between destination node.
Alternatively, the flexible Ethernet group # is flexible between source node and destination node for identifying
Ethernet group；
The flag bit is for identifying the schedule configuration and whether carry out time interval resource configuration that client is used；
The time slot allocation information is used to identify time slot channel allocation information in physical layer；
Physical layer numbers the physical layer for identifying Ethernet group；
Client indicator is used to identify the client in Ethernet group；
Unavailable number of time slot is used for the sequence for identifying unavailable time slot.
Alternatively, the fractional rate identifier is used to identify the envelope that fractional rate is carried out at destination node
Dress mapping or decapsulation mapping；
Available time slot TLV is used to identify the flexible Ethernet race member road between source node and destination node
Available number of time slot on the link of every section of footpath.
In order to solve the above technical problems, the embodiment of the present invention also provides what a kind of flexible Ethernet path was set up
Device, is arranged at destination node, including：
First receiving module, be set to reception source node transmission sets up PATH；
First path sets up module, is set to be reserved simultaneously according to the routing information progress local resource of setting up
Set up communication path；
Feedback module, is set to send reservation state Resv message to the source node；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
Alternatively, the first path is set up module and is also configured to：
PATH encapsulation resource reservation protocol jump RSVP_HOP objects are set up according to described,
According to the loadtype carried in loadtype G-PID, Virtual Ethernet；
The RSVP_HOP objects include the physical port information of correspondence physical link, the physical layer
The number and order for the physical port that the physical port of number-mark includes with the RSVP_HOP objects
Unanimously.
Set up in order to solve the above technical problems, the embodiment of the present invention also provides a kind of flexible Ethernet path
Device, be arranged at source node, including：
Request module, is set to send to destination node and sets up PATH；
Second receiving module, is set to receive the reservation state Resv message that the destination node is sent；
Module is set up in second path, is set to be reserved according to Resv message progress outgoing interface time interval resource
And set up communication path；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
Alternatively, second path is set up module and is also configured to：Pass through the money based on Traffic Engineering extensions
The fractional rate partial-rate in route display object ERO in the reservation protocol RSVP-TE message of source
Identifier, specifies the node for carrying out partial-rate encapsulation mapping and/or decapsulation mapping.
Alternatively, the request module is also configured to：
The label switched path LSP ends of label switched path attribute LSP_ATTRIBUTES objects are arrived
End available time slot type-length-value TLV is added to FlexE paths and set up in Path message.
Alternatively, described device also includes flow module, is set to：
Ethernet Ethernet physical layer PHY roads are set up by optical transfer network OTN nodes and destination node
Footpath, the signaling traffic in the flexible Ethernet FlexE paths is carried by the PHY paths.
Alternatively, the flow module is also configured to：
The signal stream that Ethernet PHY paths carry the FlexE paths is set up with the first OTN nodes
Amount, OTN Optical Channel Data Unit-k is set up between the first OTN nodes and the 2nd OTN nodes
The flexible paths of ODUFlex carry the signaling traffic in the FlexE paths, the 2nd OTN nodes with
The signaling traffic in Ethernet PHY paths carrying FlexE paths is set up between destination node.
Alternatively, the request module is also configured to：When the PATH of setting up is sent to by source node
During the first OTN nodes, the LSP for setting up PATH by LSP_ATTRIBUTES objects
When each Member Link that end-to-end available time slot TLV carries between source node and the first OTN nodes can use
Gap number；Path message is set up into the FlexE paths when the first OTN nodes and is transferred to second
During OTN nodes, described to set up PATH end-to-end by the LSP of LSP_ATTRIBUTES objects
Available time slot TLV carries each Member Link between the first OTN nodes and the 2nd OTN nodes
Available time slot number；When the PATH of setting up is transferred to destination node by the 2nd OTN nodes
When, it is described to set up LSP end-to-end available time slot of the PATH by LSP_ATTRIBUTES objects
TLV carries each Member Link available time slot number between the 2nd OTN nodes and destination node.
Compared to the prior art the present invention, has the advantages that：
The present invention supports the foundation in FlexE transport planes path using the extension of signaling, based on the present invention
In scheme, the blank of FlexE control plane signaling road constructions can be filled up, in FlexE scenes
Path end to end is set up, the pre- of the resources such as port, time slot on end-to-end path on each node is completed
Stay that there is provided the function that the end-to-end FlexE LSP paths of control plane are set up.
Brief description of the drawings
Fig. 1 is the FlexE universal architecture schematic diagrames of correlation technique；
Fig. 2 be correlation technique transmission network not aware router to transmission FlexE connection schematic diagram；
Fig. 3 is the schematic diagram of the transmission network aware FlexE of correlation technique connection；
Fig. 4 is the schematic diagram of the fractional rate transmission of the FlexE groups of correlation technique；
Fig. 5 is the schematic diagram of the FlexE Calendar distribution of correlation technique；
Fig. 6 is the flow chart of the method for the flexible Ethernet path foundation of the embodiment of the present invention；
Fig. 7 is the flow chart of the method for the flexible Ethernet path foundation of the embodiment of the present invention；
Fig. 8 is the structural representation of the device of the flexible Ethernet path foundation of the embodiment of the present invention；
Fig. 9 is the structural representation of the device of the flexible Ethernet path foundation of the embodiment of the present invention；
Figure 10 is the tag format schematic diagram of the reservation state Resv message of the embodiment of the present invention；
Figure 11 is the network application scene figure of the embodiment of the present invention 1 and 2.
Embodiment
To make the goal of the invention, technical scheme and beneficial effect of the present invention of greater clarity, with reference to
Accompanying drawing is illustrated to embodiments of the invention, it is necessary to explanation is, in the case where not conflicting, this Shen
Please in embodiment and embodiment in feature can mutually be combined.
As shown in fig. 6, the embodiment of the present invention provides a kind of method that flexible Ethernet path is set up, application
In destination node, including：
What S101, reception source node were sent sets up PATH；
S102, according to it is described set up routing information and carry out local resource reserve and set up communication path；
S103, to the source node send reservation state Resv message；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
The Resv message also includes：RSVP jump RSVP_HOP objects, it is described
RSVP_HOP objects include the physical port information of correspondence physical link, the physical layer number-mark
The number of physical port that includes of physical port and the RSVP_HOP objects and sequence consensus.
The PATH of setting up includes：General road sign label set up request object.
Also include before step S103：
PATH encapsulation RSVP_HOP objects are set up according to described,
According to the loadtype carried in loadtype G-PID, Virtual Ethernet.
FlexE end-to-end paths are carried by Ethernet PHY paths, so setting up FlexE layers
During secondary path, therefore, to assure that the PHY links between two adjacent FlexE nodes have built up.
Based on this, it is necessary to include the Ethernet PHY layers to be set up when setting up FlexE paths using signaling
Information is as shown in Figure 10：
The flexible Ethernet race mark (FlexE Group Number) is used to identify source node and purpose
Flexible Ethernet race between node；
FlexE Group of embodiment of the present invention Number can use 20 bits：Should for some
With, the different FlexE Group of differentiation, this is primarily due to be possible to the PHY that repetition occurs
Caused by Number.For example for, the equipment of 8 ports can be used as one single 8
Port set, can also be used as two 4 port sets.Defined according to FlexE standards, the FlexE at equipment two ends
Group Number should use same mark, so FlexE Group Number are being built by signaling
Dynamically specified when setting up in vertical path.
The flag bit (Flags) is for identifying the schedule configuration and whether carry out time slot money that client is used
Source is configured；
The embodiment of the present invention is assigned with two flag bits, and a flag bit is used for illustrating what is currently set up
Client uses " A " Calendar configurations or uses " B " Calendar configurations, for example, setting
Use " A " Calendar to configure for 0 expression, be set to 1, then it represents that use " B "
Calendar is configured；Another flag bit combination Slots Assignment Information is used, and is used
To represent whether the configuration that slots resources are done on node, when this mark position is 1, section
Point needs the label configuration local resource in signaling to reserve, wherein, both need to consider those points of configuration
(bit is set to 1 to the slots that dispensing client uses in Slots Assignment Information fields
Slot), it is also desirable to consider that those are not assigned to the slots of client (Slots Assignment Information
Bit is set to 0 slot in field), when this mark position is 0, it is only necessary to which consideration is matched somebody with somebody
Which slot put need to distribute to client and use, without considering those slots for being not assigned to client
(in Slots Assignment Information fields bit be set to 0 slot).Reason is,
One PHY can not simultaneously be used by a plurality of FlexE, so when FlexE connections are set up first,
Both need to consider the configuration for the slots for distributing to client, it is also desirable to consider to be not yet assigned to the slots's of client
Configuration, these are not yet assigned to the slots of client can continue by other clients after FlexE connections foundation
Use.If the remaining bandwidth in FlexE connections will distribute to other clients and use, just only need to consider
Which slots used.
When the time slot allocation information (Slots Assignment Information) is used to identify in physical layer
Gap channel allocation information；
Physical layer sequence number (PHY Number) is used for the physical layer for identifying Ethernet race；
PHY of embodiment of the present invention Number are at the FlexE shim at a FlexE Group two ends
Identical, is dynamically distributed by signaling in road construction.
Client indicator Client Indicator are used to identify the client in Ethernet race；
Client of embodiment of the present invention Indicator can use 16 bits, after signaling process negotiation
Client Indicator can carry the subscriber identification field that the time slot in FlexE header overhead fields is carried.
Unavailable slot index (Unavailable slots Number) is used for the sequence number for identifying unavailable time slot；
Unavailable slots of embodiment of the present invention Number can use 8 bits, unavailable time slot
It can be arranged in the last several continuous time slots of every sub- Calendar.
As shown in fig. 7, the embodiment of the present invention also provides a kind of method that flexible Ethernet path is set up, should
For source node, including：
S201, to destination node send set up PATH；
S202, the reservation state Resv message for receiving the destination node transmission；
S203, outgoing interface time interval resource is carried out according to the Resv message reserve and set up communication path；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
The Resv message also includes：RSVP jump RSVP_HOP objects, it is described
RSVP_HOP objects include the physical port information of correspondence physical link, the physical layer number-mark
The number of physical port that includes of physical port and the RSVP_HOP objects and sequence consensus.
Methods described also includes：
Pass through the explicit routing pair in the RSVP RSVP-TE message based on Traffic Engineering extensions
As the fractional rate partial-rate identifiers in ERO, specify carry out partial-rate encapsulation mapping and/
Or the node of decapsulation mapping.
Step S201 sends to destination node and set up before PATH, in addition to：
The label switched path LSP ends of label switched path attribute LSP_ATTRIBUTES objects are arrived
End available time slot type-length-value TLV is added to FlexE paths and set up in Path message.
Step S201 sends to destination node and set up before PATH, in addition to：
Ethernet Ethernet physical layer PHY roads are set up by optical transfer network OTN nodes and destination node
Footpath, the signaling traffic in the flexible Ethernet FlexE paths is carried by the PHY paths.
Specifically, Ethernet PHY paths are set up with the first OTN nodes and carry the FlexE paths
Signaling traffic, set up OTN optical channel numbers between the first OTN nodes and the 2nd OTN nodes
The signaling traffic in the FlexE paths, the 2nd OTN are carried according to the flexible paths of unit ODUFlex
The signaling traffic in Ethernet PHY paths carrying FlexE paths is set up between node and destination node.
Specifically, when source node by it is described set up PATH and be sent to the first OTN nodes when, it is described
PATH is set up to carry by the end-to-end available time slot TLV of LSP of LSP_ATTRIBUTES objects
Each Member Link available time slot number between source node and the first OTN nodes；As the first OTN
It is described to set up road when the FlexE paths are set up Path message and are transferred to the 2nd OTN nodes by node
Footpath message carries described the by the end-to-end available time slot TLV of the LSP of LSP_ATTRIBUTES objects
Each Member Link available time slot number between one OTN nodes and the 2nd OTN nodes；When described second
OTN nodes by it is described set up PATH and be transferred to destination node when, the PATH of setting up passes through
The end-to-end available time slot TLV of the LSP of LSP_ATTRIBUTES objects carry the 2nd OTN nodes with
Each Member Link available time slot number between destination node.
The fractional rate identifier is used to identify the encapsulation mapping that fractional rate is carried out at node or solved
Encapsulation mapping；
Available time slot TLV is used to identify the flexible Ethernet race member road between source node and destination node
Available number of time slot on the link of every section of footpath.
In numerous Hop Attribute TLV defined in RFC7570, Attribute therein is used
Flag TLV, two flags are distributed in embodiments of the present invention to be used to represent whether to do
Partial-rate mapping, when the binary coding of flag is 11, illustrates to need to extract FlexE
In all available time slots (namely slot state is not unavailable), then by these time slots
Be mapped to transmission network trunk resume it is defeated；When flag binary coding be 00 when, represent need from
Transmission network in recover these time slots, be then put into FlexE network trunks resume it is defeated.For other
" 01 " and " 10 " state, expression do not make any operation.
A new attribute TLV is extended in LSP_ATTRIBUTES objects defined in RFC5420
--- FlexE links available time slot TLV, the TLV only include several 8 bit fields, each 8
Bit field corresponds to the PHY member path that FlexE is used, and is come using these 8 byte fields
PHY member path can support the maximum number using time slot end to end for collection every.8 bit fields
Putting in order with putting in order for PHY in physical tags for PHY of correspondence is consistent.
The time slot granularity information that FlexE is supported can be believed according to bandwidth information and the bit used number
Breath is calculated, also can the time slot granularity information to be used of explicit instruction in the signaling.
The passage used when signaling road construction can be that out-band channel or FlexE technologies are provided
Management passage.
As shown in figure 8, the embodiment of the present invention also provides the device that a kind of flexible Ethernet path is set up, if
Destination node is placed in, including：
First receiving module, be set to reception source node transmission sets up PATH；
First path sets up module, is set to be reserved simultaneously according to the routing information progress local resource of setting up
Set up communication path；
Feedback module, is set to send reservation state Resv message to the source node；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
The first path is set up module and is also configured to：
PATH encapsulation resource reservation protocol jump RSVP_HOP objects are set up according to described,
According to the loadtype carried in loadtype G-PID, Virtual Ethernet；
The RSVP_HOP objects include the physical port information of correspondence physical link, the physical layer
The number and order for the physical port that the physical port of number-mark includes with the RSVP_HOP objects
Unanimously.
As shown in figure 9, the embodiment of the present invention also provides the device that a kind of flexible Ethernet path is set up, if
Source node is placed in, including：
Request module, is set to send to destination node and sets up PATH；
Second receiving module, is set to receive the reservation state Resv message that the destination node is sent；
Module is set up in second path, is set to be reserved according to Resv message progress outgoing interface time interval resource
And set up communication path；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
Second path is set up module and is also configured to：Assisted by the resource reservation based on Traffic Engineering extensions
The fractional rate partial-rate identifiers in the route display object ERO in RSVP-TE message are discussed,
Specify the node for carrying out partial-rate encapsulation mapping and/or decapsulation mapping.
The request module is also configured to：
The label switched path LSP ends of label switched path attribute LSP_ATTRIBUTES objects are arrived
End available time slot type-length-value TLV is added to FlexE paths and set up in Path message.
Described device also includes flow module, is set to：
Ethernet Ethernet physical layer PHY roads are set up by optical transfer network OTN nodes and destination node
Footpath, the signaling traffic in the flexible Ethernet FlexE paths is carried by the PHY paths.
The flow module is also configured to：
The signal stream that Ethernet PHY paths carry the FlexE paths is set up with the first OTN nodes
Amount, OTN Optical Channel Data Unit-k is set up between the first OTN nodes and the 2nd OTN nodes
The flexible paths of ODUFlex carry the signaling traffic in the FlexE paths, the 2nd OTN nodes with
The signaling traffic in Ethernet PHY paths carrying FlexE paths is set up between destination node.
The request module is also configured to：When the PATH of setting up is sent to the first OTN by source node
During node, described to set up PATH end-to-end available by the LSP of LSP_ATTRIBUTES objects
Time slot TLV carries each Member Link available time slot number between source node and the first OTN nodes；When
The FlexE paths are set up Path message and are transferred to the 2nd OTN nodes by the first OTN nodes
When, it is described to set up LSP end-to-end available time slot of the PATH by LSP_ATTRIBUTES objects
TLV carries each Member Link available time slot number between the first OTN nodes and the 2nd OTN nodes
Mesh；When the 2nd OTN nodes by it is described set up PATH and be transferred to destination node when, it is described to build
Vertical PATH carries the by the end-to-end available time slot TLV of LSP of LSP_ATTRIBUTES objects
Each Member Link available time slot number between two OTN nodes and destination node.
Embodiment one：
Network scenarios shown in Fig. 2, after figure is identified again, as shown in figure 11：Wherein A and F
Node is ethernet node, B and E nodes are the nodes for supporting FlexE technologies, it would be preferable to support full rate
Client layer signal mapping and demapping, C and D are OTN nodes, and C and D nodes are not perceived
FlexE is applied, and service bandwidth is 150G, B and C and D and E between A and B and E and F
Between be that, by three 100G PHY physical circuits are come carrying client signal, physics numbering is respectively 11
It is OTN connections between 12,13, C and D, can is two ODU4 signal connection, wherein
The granularity of time slot is 1.25G, will not generally use unavailable time slot under this scene.
User wants to set up the 150G of a node from A to F Ethernet service, uses RSVP-TE
Signaling process set up path end to end, it is assumed that the path sequence of process has been calculated, and is
A-B-C-D-E-F.The flow that whole path is set up is as follows：
Node A sends signaling Path message, and message includes universal tag and sets up request object, wherein handing over
Change type and PSC-1 packet switch is set, LSP Encoding Type are Ethernet, and the band to be set up is a width of
150G, source point and destination node are the information such as A and F, and Path message is sent to next-hop B node.
B node is after the Path message that A nodes are sended over is received, the switch type in signaling
Etc. field, judge that the path foundation that path to be set up and A nodes are initiated belongs to different switching layer
Secondary, then B node blocks the Path message that A nodes are sended over first, then encapsulate one it is new
FlexE sets up in path Path message, and message includes universal tag and sets up request object, wherein exchanging class
Type sets TDM time gas exchanges, and LSP Encoding Type are FlexE LSP, G-PID loadtypes
For Ethernet MAC, a width of 150G of the band to be set up, source point and destination node are the letter such as B and E
Breath.In view of between B and E currently without Ethernet PHY connections, B encapsulate first two it is new
Ethernet PHY set up Path message in path, for setting up two PHY between B node and E nodes
Path, a width of 100G of the band to be set up, source point and destination node are the information such as B and E, then will
Path message is sent to next-hop C nodes, and (FlexE LSP are new in wherein LSP Encoding Type
The type of coding of definition).
C nodes are after the Path message that B node is sended over is received, the switch type in signaling
Etc. field, judge that the path foundation that path to be set up and B node are initiated belongs to different switching layer
Secondary, then C nodes block the Path message that B node is sended over first, and two are then encapsulated successively
Path message is set up in new OTN paths, and message includes universal tag and sets up request object, wherein handing over
Change type and OTN-TDM time gas exchanges are set, LSP Encoding Type are G.709ODUk (Digital
Path), G-PID loadtypes are FlexE Ethernet PHY, and a width of band to be set up is 100G,
Source point and destination node are the information such as C and D and then Path message are sent into next-hop D nodes, are believed
Order is set up according to two ODU4 paths between prior art completion C and D, at this moment between C and D
ODU is exactly two PHY physical connections for two end node B and E.Complete C and D
After establishment of connection between node, C nodes are notified that the Ethernet PHY letters being blocked on C
Flow is made to continue to send.The signaling process being blocked on C is sent to D, and D nodes are receiving C sections
Similar operation is done after the Path message that point is sended over, E is subsequently sent to.
E nodes are after the Path message that D nodes are sended over is received, because being saved for the purpose of E nodes
Point, then E nodes complete local resource reservation first, according to prior art, complete Ethernet PHY
The path of aspect is set up, and is sent signaling Resv message and is given D nodes, then to C nodes, then is saved to B
Point.
After B node is set up in the path for confirming PHY layer face, continue transmission FlexE paths and set up Path
Message directly arrives 150G bandwidth demand of tail node E, the E node according to client, it is determined that when needing 30
Gap carrys out carrying client signal, it is assumed that the time slot of occupancy is 1 1~15 time slot and 2 1~15 time slot,
1 16~20 time slots and 2 16~20 time slots are unused slots, it is also desirable to complete the reserved of resource,
Secondly E nodes encapsulation RSVP_HOP objects, for indicate the physical link to be used be which two
Bar, it is assumed here that use 12 and 13.In addition to resource reservation, E nodes are carried according in G-PID
Loadtype, fictionalize and carry out Ethernet interfaces, the remaining bandwidth of interface is 50G, namely to downstream
For node F, the Ethernet available bandwidth for still having 50G can be used, and so also can guarantee that E nodes can
By ethernet signal, demapping is come from FlexE paths.E nodes after the completion of these steps, are sent
Resv message carries the signaling tag form provided in the present invention to B node, Resv message therein,
Each field is entered as wherein in label：
(a)、FlexE Group Number：For one FlexE Group to be used of unique mark,
Only exist between two FlexE Shim nodes, at this time E is according to own node FlexE Group
Number service condition, distributes an available numeral, for unique mark one between B and E
FlexE Group.
(b), Flags, identifies bit field, because being to set up FlexE connections for the first time, needs to exist
Resource reservation is configured on node.Another bit, signaling can configure and Calendar is used herein
The time slot of type-A, it is ensured that the end node of path two uses identical Calendar Configuration Types.
(c)、PHY Number：Two PHY are used altogether, so needing exist for two PHY
Number distributes a value, and one is 1, and another is 2.The specific thing of PHY Number marks
It is suitable that the order of reason port should be identified with Member Link in the RSVP_HOP objects carried in Resv message
Sequence is consistent.PHY Number are applied in path end to end, no matter are jumped by several, PHY
Number will not change.
(d), Client Indicator (16 bit)：For one FlexE group of unique mark
In a client, the Client Indicator after signaling process is consulted can carry and is held on FlexE heads
Sell subscriber identification field (Client carried Calendar " A " or of the time slot carrying in field
" B " slot number), it is assumed here that one value 500 of distribution is used for identifying this client, the present embodiment
Middle respective preceding 15 time slots used in two PHY, so needing in FlexE header overheads
The subscriber identification field of time slot carrying is set to 500.
(e), Slots Assignment Information, this field occurrence number and PHY Number
Occurrence number is identical, and the resource for the time slot for being provided with distributing to client for 1 bit bit identification is pre-
Stay, be set to 0 bit bit identification be not yet assigned to client time slot resource reservation.Assuming that FlexE
Client has used preceding 15 time slots in this two PHY, then during by first 15 in this two PHY
Gap is set to 1, and rear five time slots are set to 0.
(f), Unavailable slots Number (8 bit)：The field of this in the present embodiment is set
For 0.
B node is after the Resv message that E nodes are sended over is received, according to what is carried in signaling
Time interval resource is reserved on label, completion outgoing interface, namely completes FlexE roads between B to E nodes
The foundation in footpath.In addition to resource reservation, B node is according to the loadtype carried in G-PID, virtually
Out Ethernet interfaces, the remaining bandwidth of interface is 50G, namely for upstream node A, is still had
50G Ethernet available bandwidth can be used, and so also can guarantee that B node can map ethernet signal
To FlexE paths.Complete after these steps, B node, which is notified that, to be blocked on B node
Signaling process continues to send, and the signaling process being blocked on B node is sent to E nodes (because of centre
B-C-D-E nodes externally show as a hop link, namely B-E ethernet link), then saved by E
Point is sent to F nodes.
F nodes are after the path message that upstream is sended over is received, because F nodes are destination nodes,
F nodes encapsulate Resv message, the flow set up according to Ethernet path described in the prior, send
Resv message gives E nodes, and B node is then arrived again, and A nodes are then arrived again, completes whole path
Set up.
If occurring the situation of road construction failure during being set up in path, according to existing flow, send
Error message gives the first node of correspondence level, and first node is after Error message is received, recurrence successively
Complete the transmission of each layer Error message.
Embodiment two：
Network scenarios shown in Fig. 4, still using Figure 11 network scenarios, unlike：C and D
The FlexE applications of node support section speed (partial-rate), it is assumed that between C and D nodes
Available bandwidth be 180G, have the time slot of 4 down states between B and C, there is 5 between D and E
The information of unavailable time slot can be used under the disabled time slot of bar, this scene.
Now, it is assumed that user remains unchanged the 150G that set up a node from A to F Ethernet service,
Path end to end is set up using RSVP-TE signaling process, it is assumed that the path sequence of process has been counted
It is good, it is A-B-C-D-E-F.The flow that whole path is set up is as follows：
Node A sends signaling Path message, and message includes universal tag and sets up request object, wherein handing over
Change type and PSC-1 packet switch is set, LSP Encoding Type are Ethernet, and the band to be set up is a width of
150G, source point and destination node are the information such as A and F, and Path message is sent to next-hop B node.
B node is after the Path message that A nodes are sended over is received, the switch type in signaling
Etc. field, judge that the path foundation that path to be set up and A nodes are initiated belongs to different switching layer
Secondary, then B node carries out path computing first, and confirmation can be by setting up partial-rate FlexE
LSP sets up end-to-end path, and then node B blocks the Path message that A nodes are sended over, so
Path message is set up in the new FlexE paths of post package one, and message includes universal tag and sets up request pair
As wherein switch type sets TDM time gas exchanges, and LSP Encoding Type are Partial-rate
FlexE LSP, G-PID loadtype are Ethernet MAC, a width of 150G of the band to be set up, source point
It is the information such as B and E with destination node, B node is needed according to the ability information for flooding out in route,
According to ERO attributes TLV new in present invention extension, explicit specifying is partial-rate in C nodes
Mapping, do partial-rate demapping in D nodes；Meanwhile, B node can be in signaling Path message
It is middle to add the attribute TLV of LSP_ATTRIBUTES objects extended in the present invention, carry B and C it
Between every PHY in FlexE layers of available number of time slot, here respectively 18,18.
B node is after above-mentioned operation is completed, because the next hop address for supporting FlexE time gas exchanges is
C.In view of between B and C currently without Ethernet PHY connections, B encapsulate first two it is new
Ethernet PHY set up Path message in path, for setting up two PHY between B node and C nodes
Path, a width of 100G of the band to be set up, source point and destination node are the information such as B and C.Then basis
Prior art completes the foundation in PHY paths between B and C, and C nodes are transmitted across receiving B node
The path come is set up after path message, and it is Partial-rate to check the G-PID fields in path message
Whether FlexE LSP, and inspection support partial-rate mapping in itself, after confirmation is out of question, return
Return the foundation that Resv message completes PHY paths to node B.
B node is set up in the PHY paths between confirming B and C after completion, sends FlexE paths
Path message is set up to C nodes, C nodes are receiving the FlexE paths foundation that B node is sended over
After message, the field such as switch type in signaling judges that path to be set up and B node are initiated
Path set up belong under different exchange levels, this scene, FlexE paths can be carried on OTN
The exchange of time slot aspect multipath is directly done in ODUFlex paths, avoids the need for setting up Ethernet PHY here
Path.Then C nodes block the Path message that B node is sended over first, then encapsulate one newly
OTN ODUFlex Path message, wherein switch type set OTN-TDM time gas exchanges, LSP
Encoding Type are G.709 ODUk (Digital Path), and G-PID loadtypes are Partial-rate
FlexE LSP, it is 180G to allow also in C and D nodes maximum available bandwidth, and this bandwidth energy
The 150G of FlexE client bandwidth demand is enough met, then continues OTN according to prior art
The path of ODUFlex aspects is set up, and is set with a width of 180G, is sent OTN ODUFlex.
C and D nodes are completed according to existing procedure after the foundation of OTN ODUFlex paths, since it is desired that
There is provided service for client layer FlexE, so need to set up virtual interface for FlexE because FlexE and
OTN is time gas exchange, and FlexE time slot granularity is 5G, and OTN time slot granularity is here
1.25G, so a FlexE time slot is carried transmission D node resource reservations by 4 OTN time slot
By the map bindings between FlexE time slots and OTN time slots, D node virtuals come out two FlexE PHY
Interface, it is assumed that fictionalize the two next interfaces is designated 41 and 42, is saved to downstream FlexE Shim
For point, the two FlexE PHY interfaces support FlexE time slots；C nodes, which are also fictionalized, comes two
FlexE PHY interfaces, it is assumed that fictionalize the two next interfaces is designated 51 and 52, to upstream
For FlexE Shim B nodes, the two FlexE PHY interfaces support FlexE time slots.Now C and
Link between D nodes, is exactly the chain of a support FlexE function for B and E nodes
Road.
C nodes confirm C and D nodes between path be successfully established after, it is contemplated that C and D it
Between the separately available number of time slot of two paths be 18,18, determine to set in signaling with a width of 180G,
Source point and destination node are the information such as C and D, and Path message then is sent into next-hop D nodes.
D nodes repeat above-mentioned 3rd flow (namely C flows), complete Ethernet PHY layers path
Set up, FlexE layers of path foundation are then proceeded to, because of two PHY maximums between D nodes and E nodes
Can be 18,17 with FlexE number of time slot, so the attribute TLV words of LSP_ATTRIBUTES objects
The assignment of section is revised as corresponding time slot, continues transmission FlexE paths and sets up message to E nodes.
E nodes are after the Path message that D nodes are sended over is received, because being saved for the purpose of E nodes
Point, then E nodes complete local resource reservation first.According to the category of LSP_ATTRIBUTES objects
Property TLV fields value, the number for obtaining the maximum available time slot of end-to-end path is 18,17 time slots, section
Point E determines that PHY 1 1~18 time slot can use, PHY 2 1~17 time slot can according to this information
With；In addition, according to the 150G bandwidth demands of client, it is determined that needing 30 time slots to carry out carrying client letter
Number, it is assumed that the time slot of occupancy is 1 1~15 time slot and 2 1~15 time slot, 1 16~18 time slots
And 2 16~17 time slots are unused slots, it is also desirable to complete the reserved of resource, secondly E nodes envelope
RSVP_HOP objects are filled, for indicating which two the physical link to be used be, it is assumed here that make
With 12 and 13.In addition to resource reservation, E nodes are empty according to the loadtype carried in G-PID
Draw up and carry out Ethernet interfaces, the remaining bandwidth of interface is 25G, namely for downstream node F, still
Have 25G Ethernet available bandwidth can be used, so also can guarantee that E nodes can by ethernet signal from
Demapping is come in FlexE paths.E nodes after the completion of these steps, send Resv message and saved to D
Point, Resv message therein carries the signaling tag form provided in the present invention, each word wherein in label
Section be entered as：
(a)、FlexE Group Number：For one FlexE Group to be used of unique mark,
Only exist between two FlexE Shim nodes, at this time E is according to own node FlexE Group
Number service condition, distributes an available numeral, for unique mark one between B and E
FlexE Group.
(b), Flags, identifies bit field, because being to set up FlexE connections for the first time, needs to exist
Resource reservation is configured on node.Another bit, signaling can configure and Calendar is used herein
The time slot of type-A, it is ensured that the end node of path two uses identical Calendar Configuration Types.
(c)、PHY Number：Two PHY are used altogether, so needing exist for two PHY
Number distributes a value, and one is 1, and another is 2.The specific thing of PHY Number marks
Manage the order one that the order of port should be identified with Member Link in the RSVP_HOP objects of Resv message
Cause.PHY Number are applied in path end to end, no matter are jumped by several, PHY Number
It will not change.
(d), Client Indicator (16 bit)：For one FlexE group of unique mark
In a client, the Client Indicator after signaling process is consulted can carry and is held on FlexE heads
Sell subscriber identification field (Client carried Calendar " A " or of the time slot carrying in field
" B " slot number), it is assumed here that one value 500 of distribution is used for identifying this client, the present embodiment
Middle respective preceding 15 time slots used in two PHY, so needing in FlexE header overheads
The subscriber identification field of time slot carrying is set to 500.
(e), Slots Assignment Information, this field occurrence number and PHY Number
Occurrence number is identical, and the resource for the time slot for being provided with distributing to client for 1 bit bit identification is pre-
Stay, be set to 0 bit bit identification be not yet assigned to client time slot resource reservation.Assuming that FlexE
Client has used respective preceding 15 time slots in this two PHY, then by preceding 15 in this two PHY
Individual time slot is set to 1.If unavailable time slot, because FlexE is carried using two paths,
According to the result of negotiation, the unavailable number of time slot of the first paths is 3, the second paths it is unavailable
Number of time slot is 2.16~18 time slots in first paths be set to 0 explanation be not yet assigned to client when
16~17 time slots in the resource reservation of gap, the second paths be set to 0 explanation be not yet assigned to client when
The resource reservation of gap.
Unavailable slots Number (8 bit)：Unavailable time slot can be arranged in every height
In the last several continuous time slots of Calendar, this field is used for illustrating the number of unavailable time slot.For
For two paths, the unavailable number of time slot of the first paths is set to 2, the second paths can not
3 are set to number of time slot.
D nodes are after the Resv message of E nodes transmission is received, it is first determined oneself and upstream C
The time slot that client is needed to use between node, it is assumed that be for two PHY time slots used here
2~16, then D nodes complete the process of time interval resource configuration, also i.e. by carrying client industry on inbound port
Business 2~16 time slot configurations to carrying client business in exit port 1~15 time slot, while will be untapped
The time gas exchange of time slot 1 and 17~20 is on 16~20 time slots, and the order of time slot is to change here
, D nodes are believed according to the sub- Member Link that RSVP_HOP objects are carried in Resv message is received
Breath, mark above one be PHY 1 (actual port number is 41), behind one be the (realities of PHY 2
42) border port numbers is；In addition to Client client's aspect time slot needs to exchange, this
, it is necessary to clearly state which the time slot used in PHY layer face has under partial-rate scene, namely pass through
Slots used by a PHY fields are set, it is assumed that still using PHY 1 1~18 time slot and PHY 2
1~17 time slot, then these fields are set to 1, other are set to 0；In addition, D nodes are according to it
Before partial-rate demapping identifiers in the path message that receives, recover all time slots, it is right
Existing FlexE standards are followed in the coding of unavailable time slots.Complete matching somebody with somebody for these time gas exchanges
After putting, D nodes send Resv message and encapsulate 2~16 gap informations used to above there is C nodes, together
Sample will also encapsulate RSVP_HOP objects and indicate the Member Link to be used, C nodes Path before
Partial-rate mapping identifiers in message, configuration transmission plane extracts available time slot (time slot shape
The non-unavailable of state), it is mapped in transmission network and transmits.Then C nodes repeat similar process one
Signaling Resv message is directly sent to B node.
B node is after the Resv message that C nodes are sended over is received, according to what is carried in signaling
Time interval resource is reserved on label, completion outgoing interface, namely completes FlexE roads between B to E nodes
The foundation in footpath.In addition to resource reservation, B node is according to the loadtype carried in G-PID, virtually
Out Ethernet interfaces, it is contemplated that unused slot number in the FlexE paths of foundation, it is determined that connecing
The remaining bandwidth of mouth is 25G, namely for upstream node A, still there is 25G Ethernet available bandwidth
It can be used.After completing these steps, B node be notified that the signaling process that is blocked on B node after
Supervention is sent, and the signaling process being blocked on B node is sent to E nodes (because middle B-C-D-E
Node externally shows as a hop link, namely B-E ethernet link), be then sent to by E nodes
F nodes.
F nodes are after the path message that upstream is sended over is received, because F nodes are destination nodes,
F nodes encapsulate Resv message, the flow set up according to Ethernet path described in the prior, send
Resv message gives E nodes, and B node is then arrived again, and A nodes are then arrived again, completes whole path
Set up.
Although disclosed embodiment is as above, its content is only to facilitate understand the present invention
Technical scheme and the embodiment that uses, be not intended to limit the present invention.Technology belonging to any present invention
Technical staff in field, can be with the premise of disclosed core technology scheme is not departed from
Any modification and change, but the protection domain that the present invention is limited are made in the form and details of implementation, still
The scope that must be limited by appended claims is defined.
Claims (22)
1. a kind of method that flexible Ethernet path is set up, it is characterised in that applied to destination node, bag
Include：
Receive source node transmission sets up PATH；
According to it is described set up routing information and carry out local resource reserve and set up communication path；
Reservation state Resv message is sent to the source node；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
2. the method as described in claim 1, it is characterised in that：The Resv message also includes：Money
Source reservation protocol jump RSVP_HOP objects, the RSVP_HOP objects include correspondence physical link
Physical port information, the physical port of the physical layer number-mark and the RSVP_HOP objects
Including physical port number and sequence consensus.
3. the method as described in claim 1, it is characterised in that：The PATH of setting up includes：It is logical
Request object is set up with road sign label.
4. method as claimed in claim 2, it is characterised in that：Reserved shape is sent to the source node
Also include before state Resv message：
PATH encapsulation RSVP_HOP objects are set up according to described,
According to the loadtype carried in loadtype G-PID, Virtual Ethernet.
5. the method as described in claim 1, it is characterised in that the flexible Ethernet group # is used
Flexible Ethernet group between mark source node and destination node；
The flag bit is for identifying the schedule configuration and whether carry out time interval resource configuration that client is used；
The time slot allocation information is used to identify time slot channel allocation information in physical layer；
Physical layer numbers the physical layer for identifying Ethernet group；
Client indicator is used to identify the client in Ethernet group；
Unavailable number of time slot is used for the sequence number for identifying unavailable time slot.
6. a kind of method that flexible Ethernet path is set up, it is characterised in that applied to source node, bag
Include：
Sent to destination node and set up PATH；
Receive the reservation state Resv message that the destination node is sent；
Reserved according to Resv message progress outgoing interface time interval resource and set up communication path；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
7. method as claimed in claim 6, it is characterised in that the Resv message also includes：Money
Source reservation protocol jump RSVP_HOP objects, the RSVP_HOP objects include correspondence physical link
Physical port information, the physical port of the physical layer number-mark and the RSVP_HOP objects
Including physical port number and sequence consensus.
8. method as claimed in claim 6, it is characterised in that also include：By based on flow work
The fractional rate in route display object ERO in the RSVP RSVP-TE message of journey extension
Partial-rate identifiers, specify the node for carrying out partial-rate encapsulation mapping and/or decapsulation mapping.
9. method as claimed in claim 6, it is characterised in that sent to destination node and set up path
Before message, in addition to：
The label switched path LSP ends of label switched path attribute LSP_ATTRIBUTES objects are arrived
End available time slot type-length-value TLV is added to FlexE paths and set up in Path message.
10. method as claimed in claim 6, it is characterised in that sent to destination node and set up path
Before message, in addition to：
Ethernet Ethernet physical layer PHY roads are set up by optical transfer network OTN nodes and destination node
Footpath, the signaling traffic in the flexible Ethernet FlexE paths is carried by the PHY paths.
11. method as claimed in claim 10, it is characterised in that sent to destination node and set up road
Before the message of footpath, in addition to：
The signal stream that Ethernet PHY paths carry the FlexE paths is set up with the first OTN nodes
Amount, OTN Optical Channel Data Unit-k is set up between the first OTN nodes and the 2nd OTN nodes
The flexible paths of ODUFlex carry the signaling traffic in the FlexE paths, the 2nd OTN nodes with
The signaling traffic in Ethernet PHY paths carrying FlexE paths is set up between destination node.
12. method as claimed in claim 11, it is characterised in that when source node by described sets up road
When footpath message is sent to the first OTN nodes, the PATH of setting up passes through LSP_ATTRIBUTES
The end-to-end available time slot TLV of LSP of object carry each member between source node and the first OTN nodes
Link available time slot number；When Path message is set up in the FlexE paths by the first OTN nodes
When being transferred to the 2nd OTN nodes, the PATH of setting up passes through LSP_ATTRIBUTES objects
The end-to-end available time slot TLV of LSP are carried between the first OTN nodes and the 2nd OTN nodes
Each Member Link available time slot number；When the 2nd OTN nodes transmit the PATH of setting up
During to destination node, the PATH of setting up is arrived by the LSP ends of LSP_ATTRIBUTES objects
Available time slot TLV is held to carry each Member Link available time slot between the 2nd OTN nodes and destination node
Number.
13. method as claimed in claim 6, it is characterised in that the flexible Ethernet group # is used
Flexible Ethernet group between mark source node and destination node；
The flag bit is for identifying the schedule configuration and whether carry out time interval resource configuration that client is used；
The time slot allocation information is used to identify time slot channel allocation information in physical layer；
Physical layer numbers the physical layer for identifying Ethernet group；
Client indicator is used to identify the client in Ethernet group；
Unavailable number of time slot is used for the sequence for identifying unavailable time slot.
14. method as claimed in claim 9, it is characterised in that the fractional rate identifier is used for
Identify the encapsulation mapping or decapsulation mapping that fractional rate is carried out at destination node；
Available time slot TLV is used to identify the flexible Ethernet race member road between source node and destination node
Available number of time slot on the link of every section of footpath.
15. the device that a kind of flexible Ethernet path is set up, it is characterised in that be arranged at destination node,
Including：
First receiving module, be set to reception source node transmission sets up PATH；
First path sets up module, is set to be reserved simultaneously according to the routing information progress local resource of setting up
Set up communication path；
Feedback module, is set to send reservation state Resv message to the source node；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
16. device as claimed in claim 15, it is characterised in that：The first path sets up module
It is also configured to：
PATH encapsulation resource reservation protocol jump RSVP_HOP objects are set up according to described,
According to the loadtype carried in loadtype G-PID, Virtual Ethernet；
The RSVP_HOP objects include the physical port information of correspondence physical link, the physical layer
The number and order for the physical port that the physical port of number-mark includes with the RSVP_HOP objects
Unanimously.
17. the device that a kind of flexible Ethernet path is set up, it is characterised in that be arranged at source node, is wrapped
Include：
Request module, is set to send to destination node and sets up PATH；
Second receiving module, is set to receive the reservation state Resv message that the destination node is sent；
Module is set up in second path, is set to be reserved according to Resv message progress outgoing interface time interval resource
And set up communication path；
The Resv message includes following one or more：Flexible Ethernet group #, flag bit,
Time slot allocation information, physical layer numbering, client indicator, unavailable number of time slot.
18. device as claimed in claim 17, it is characterised in that module is set up in second path
It is also configured to：Pass through the display in the RSVP RSVP-TE message based on Traffic Engineering extensions
Fractional rate partial-rate identifiers in routing object ERO, specify progress partial-rate encapsulation to reflect
Penetrate and/or decapsulate the node of mapping.
19. device as claimed in claim 17, it is characterised in that the request module is also set up
For：
The label switched path LSP ends of label switched path attribute LSP_ATTRIBUTES objects are arrived
End available time slot type-length-value TLV is added to FlexE paths and set up in Path message.
20. device as claimed in claim 17, it is characterised in that also including flow module, is set
For：
Ethernet Ethernet physical layer PHY roads are set up by optical transfer network OTN nodes and destination node
Footpath, the signaling traffic in the flexible Ethernet FlexE paths is carried by the PHY paths.
21. device as claimed in claim 20, it is characterised in that the flow module is also set up
For：
The signal stream that Ethernet PHY paths carry the FlexE paths is set up with the first OTN nodes
Amount, OTN Optical Channel Data Unit-k is set up between the first OTN nodes and the 2nd OTN nodes
The flexible paths of ODUFlex carry the signaling traffic in the FlexE paths, the 2nd OTN nodes with
The signaling traffic in Ethernet PHY paths carrying FlexE paths is set up between destination node.
22. device as claimed in claim 21, it is characterised in that the request module is also configured to：
When source node by it is described set up PATH and be sent to the first OTN nodes when, it is described to set up PATH
Source node and first is carried by the end-to-end available time slot TLV of the LSP of LSP_ATTRIBUTES objects
Each Member Link available time slot number between OTN nodes；When the first OTN nodes will be described
When FlexE sets up in path Path message and is transferred to the 2nd OTN nodes, the PATH of setting up passes through
The end-to-end available time slot TLV of LSP of LSP_ATTRIBUTES objects carry the first OTN sections
Each Member Link available time slot number between point and the 2nd OTN nodes；When the 2nd OTN nodes
By it is described set up PATH and be transferred to destination node when, the PATH of setting up passes through
The end-to-end available time slot TLV of the LSP of LSP_ATTRIBUTES objects carry the 2nd OTN nodes with
Each Member Link available time slot number between destination node.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610161268.2A CN107204941A (en) | 2016-03-18 | 2016-03-18 | The method and apparatus that a kind of flexible Ethernet path is set up |
| PCT/CN2016/097204 WO2017156987A1 (en) | 2016-03-18 | 2016-08-29 | Method and apparatus for establishing flexible ethernet (flexe) path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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