CN106803811A - The acquisition methods and device of a kind of routing iinformation - Google Patents
The acquisition methods and device of a kind of routing iinformation Download PDFInfo
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- CN106803811A CN106803811A CN201510849654.6A CN201510849654A CN106803811A CN 106803811 A CN106803811 A CN 106803811A CN 201510849654 A CN201510849654 A CN 201510849654A CN 106803811 A CN106803811 A CN 106803811A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/26—Route discovery packet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/32—Flooding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/52—Multiprotocol routers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses the acquisition methods and device of a kind of routing iinformation.The method includes：The port attribute information of the Single port of first node is obtained, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot, port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot；According to the port attribute information, the routing iinformation of the first node is determined.Acquisition first node port attribute information is realized, so as to according to first node port attribute information, the path set up between first node and other nodes.
Description
Technical field
The present invention relates to the communication technology, the acquisition methods and device of espespecially a kind of routing iinformation.
Background technology
With the development of the communication technology, a kind of emerging tranmission techniques are proposed, i.e., flexible Ethernet (FlexE).
Flexible Ethernet can realize various transmission means, for example, the first, multiple ethernet PHY physical layer signals are bundled, for example, binding to get up to carry a 200G MAC signal by by two 100G Ethernets physical signallings (BASE-R PHYs).Or, second, ethernet PHY physical layer signal is carried into sub- rate signal, for example, 100GBASE-R PHY carry the signal of 50G.Or, the third, the PHY physical signallings that channelizing or a group binding inside a PHY physical signalling are got up, for example, supporting to transmit a 150G signal and two 25G signals on three 100GBASE-R PHYs of binding.
However, during stating the road construction of flexible Ethernet in realization, it is impossible to the port attribute information of node is obtained, so as to the path for leading to not set up between each node.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides the acquisition methods and device of a kind of routing iinformation, it is used to the path for solving the problems, such as to be set up between each node in flexible Ethernet.
In order to reach the object of the invention, the invention provides a kind of acquisition methods of routing iinformation, including：A kind of acquisition methods of routing iinformation, it is characterised in that including：
The port attribute information of the Single port of first node is obtained, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot, port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot；
According to the port attribute information, the routing iinformation of the first node is determined.
Further, whether the available information of each time slot includes following any one or its combination：Unusable gap information or, unused slots information；
The information that the port speed ability is supported includes following any one or its combination：Fractional rate or full rate.
Further, the port attribute information is set to subobject, or, the port attribute information is set with sub- TLV message formats.
Further, whether the available information of each time slot is using following any one or its combination：Using bit bit-identify, or, using the field identification of port bandwidth.
Further, the information that the port speed ability is supported uses bit bit-identify.
Present invention also offers a kind of acquisition device of routing iinformation, including：
Acquisition module, the port attribute information of the Single port for obtaining first node, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot, port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot；
Determining module, for according to the port attribute information, determining the routing iinformation of the first node.
Further, whether the available information of each time slot includes following any one or its combination：Unusable gap information or, unused slots information；
The information that the port speed ability is supported includes following any one or its combination：Fractional rate or full rate.
Further, the port attribute information is set to subobject, or, the port attribute information is set with sub- TLV message formats.
Further, whether the available information of each time slot is using following any one or its combination：Using bit bit-identify, or, using the field identification of port bandwidth.
Further, the information that the port speed ability is supported uses bit bit-identify.
Compared with prior art, present invention resides in the port attribute information of the Single port of first node in the present embodiment, is obtained, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot, port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot；According to the port attribute information, the routing iinformation of the first node is determined.Acquisition first node port attribute information is realized, so as to according to first node port attribute information, the path set up between first node and other nodes.
Other features and advantages of the present invention will illustrate in the following description, also, partly become apparent from specification, or be understood by implementing the present invention.The purpose of the present invention and other advantages can be realized and obtained by specifically noted structure in specification, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical solution of the present invention, and constitutes a part for specification, is used to explain technical scheme together with embodiments herein, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the schematic flow sheet of the embodiment of link management method of the present invention；
Fig. 2 is the setting schematic diagram of the port attribute information of the embodiment of acquisition methods one of routing iinformation of the present invention；
Fig. 3 is the node schematic diagram of a scenario of the embodiment of acquisition methods one of routing iinformation of the present invention；
Fig. 4 is the network scenarios schematic diagram of the embodiment of acquisition methods one of routing iinformation of the present invention；
Fig. 5 is the structural representation of the embodiment of acquisition device one of routing iinformation of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, embodiments of the invention are described in detail below in conjunction with accompanying drawing.It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can mutually be combined.
When the acquisition methods of routing iinformation provided in an embodiment of the present invention specifically can apply to set up path between each node in flexible Ethernet.The acquisition methods of the routing iinformation that the present embodiment is provided can specifically be performed by the acquisition device of routing iinformation, the acquisition device of the routing iinformation can be integrated in the node in flexible Ethernet, or be separately provided, wherein, the acquisition device of the routing iinformation can be realized by the way of software and/or hardware.The acquisition methods and device of the routing iinformation for providing the present embodiment below are described in detail.
Fig. 1 is the schematic flow sheet of the embodiment of acquisition methods one of routing iinformation of the present invention, as shown in figure 1, the acquisition methods of the routing iinformation that the present invention is provided, including：
The port attribute information of step 101, the Single port of acquisition first node.
In the present embodiment, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot, port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot.
Specifically, the port attribute information of the Single port for obtaining first node can at least include following two implementations：
The first implementation, the solicited message that acquisition port attribute information is sent to first node, then, port attribute information are carried in the response message that first node sends is obtained.
Second implementation, the port attribute information of acquisition first node transmission.
Step 102, according to the port attribute information, determine the routing iinformation of the first node.
For example, for according to the port attribute information, determining the routing iinformation of the first node at least includes following three kinds of implementations：
Whether the first implementation, according to the available information of each time slot, determines the routing iinformation of first node, you can set up the time slot in path.
Second implementation, according to the information that the port speed ability carried in port attribute information is supported, to know the ability of the data transfer of the port of first node.
The third implementation, according to the information that the port speed ability carried in port attribute information is supported, determines the ability of the data transfer of the port of first node, then, according to the whether available information of each time slot, the routing iinformation of first node is determined, you can set up the time slot in path.
In the present embodiment, the port attribute information of the Single port of first node is obtained, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot, port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot；According to the port attribute information, the routing iinformation of the first node is determined.Acquisition first node port attribute information is realized, so as to according to first node port attribute information, the path set up between first node and other nodes.
On the basis of above-described embodiment, whether the available information of each time slot includes following any one or its combination：Unusable gap information or, unused slots information；
The information that the port speed ability is supported includes following any one or its combination：Fractional rate or full rate.
Further, on the basis of above-described embodiment, the port attribute information is set to subobject, or, the port attribute information is set with sub- TLV message formats.Wherein, TLV message formats refer to Type-length-value (TLV), and T fields represent type of message, and L field represents that message length, V fields deposit the content of message.
Further, on the basis of above-described embodiment, the whether available information of each time slot following any one or its combination：Using bit bit-identify；Or, using the field identification of port bandwidth.
For example, whether bit bit-identify is used for the available information of each time slot, can illustrate that each time slot is not used the information of information (unused slot) and the unusable information of each time slot (unavailable slot) by using two 20 bits, 20 bits for unused slot, if corresponding bit position is 1, represent that this time slot is not used by, can be used to set up end-to-end path.20 bits for unavailable slot, if corresponding bit position is 1, the state for representing this time slot is down state.
Further, on the basis of above-described embodiment, the information that the port speed ability is supported uses bit bit-identify.
For example, one new bit of extension, for illustrating first node to fractional rate (partial-rate) and the information of full rate (full-rate), Value fields therein are identified using a bit, specifically, when this bit position is 1, illustrate to support the encapsulation mapping of partial-rate, and when this bit position is 0, illustrate to support the encapsulation mapping of Full-rate.This bit can extend single subobject or sub- TLV to carry, it is also possible to newly mark a bit to illustrate in existing protocol extension reserved field.
Fig. 2 is the setting schematic diagram of the port attribute information of the embodiment of acquisition methods one of routing iinformation of the present invention, the port attribute information can be arranged on the bottom line in interface exchange capacity descriptor as shown in Figure 2, i.e. in Switching Capability-specific information.
Fig. 3 is the node schematic diagram of a scenario of the embodiment of acquisition methods one of routing iinformation of the present invention.As shown in Figure 3, by taking the extension of (inter-domain routing protocol) OSPF-TE agreements as an example, use the ISCD interface capability descriptors shown in Fig. 2, setting exchange capacity (Switch Cap) field is switch type (TDM), coding (Encoding) field is FlexE type of codings, exchange capacity customizing messages field uses new FlexE exchange capacity customizing messages, the resource information related for carrying FlexE.
Specifically, two adjacent nodes Node1 and Node2 support that FlexE is exchanged, each node includes six ports, physical port number is respectively 21~26 and 31~36, the FlexE Group set up between Node1 nodes and Node2 nodes can at most support 6 bindings of PHY, 6 PHY can also any combination, be combined into multigroup FlexE Group.
Any one connection in for Node1 and Node2, need that the timeslot case of (unused) and the timeslot case of unavailable (unavailable) is not used by Routing Protocol issue link, specific extended coding is as follows, for the network scenarios shown in Fig. 3, assuming that 3 and 5 time slots are unavailable states on Node121 ports, remaining 18 time slot is the original state of unused, and at this time exchange capacity customizing messages field is encoded in extended coding：
Slot information is not used：Wherein in addition to 3 and 5 home positions are 0, other all of home positions are 1.
Unavailable slot information：Therein 3 and 5 home positions are 1, and other are set to 0.
Assuming that establishing a path for 10G business between Node1 and Node2 nodes, 10 and 11 time slots have been used, then the coding of exchange capacity customizing messages field is changed into Fig. 3：
Slot information is not used：Wherein in addition to 3,5,10 and 11 home positions are 0, other all of home positions are 1.
Unavailable slot information：Do not change, it is 1 to remain 3 and 5 home positions, and other are set to 0.
For all of port in Node1 and Node2, issued according to above-mentioned coded system.
Fig. 4 is the network scenarios schematic diagram of the embodiment of acquisition methods one of routing iinformation of the present invention.As shown in Figure 4, A and F nodes are ethernet nodes, B and E nodes are the nodes for supporting FlexE technologies, C and D are optical transfer network (OpticalTransportNetwork, abbreviation OTN) node, and C and D nodes do not perceive FlexE applications, service bandwidth is 150G between A and B and E and F, it is to carry out carrying client signal by two physical circuits of 100G (PHY) between B and C and D and E, it is OTN connections between C and D, can be two signal connections of ODU4, the wherein granularity of time slot is 1.25G.
In order to ensure to flood out by partial-rate the and full-rate abilities that node is supported,ISCD interface exchange capacity descriptor of the present invention based on the Routing Protocol definition defined in RFC4203,Extend a new bit,Specific ISCD forms are as shown in Figure 2,Reserved field of the bit of extension behind Switching Cap exchange capacities fields and Encoding code fields,The bit of new extension is used to illustrate support information of the FlexE nodes to partial-rate and full-rate abilities,Identified using a bit,When this bit position is 1,Illustrate to support that the encapsulation of partial-rate maps,And when this bit position is 0,Illustrate to support that the encapsulation of Full-rate maps.
In corresponding to the network scenarios shown in Fig. 4, OTN fringe nodes C and D support the ability of FlexE partial-rate, need to carry the bit defined in the present invention in route protocol flooding, the encapsulation and decapsulation of partial-rate are supported for identifying C and D nodes, the exchange in instant gap layer face, without parsing FlexE client signals.
Path-calculating element or node are when end-to-end path computation is done, the information that the partial-rate that can flood out according to C and D nodes is supported, calculate an end-to-end path, signal in path is when C nodes are reached, therefrom extract the time slot of non-unavailable states, transmission transfers on network is mapped to, and these time slot demappings are returned into original state in D nodes.
Fig. 5 is the structural representation of the embodiment of acquisition device one of routing iinformation of the present invention.As shown in figure 5, the acquisition device of the routing iinformation, it is characterised in that including：Acquisition module 51 and determining module 52.Wherein,
Acquisition module 51, the port attribute information of the Single port for obtaining first node, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot, port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot；
Determining module 52, for according to the port attribute information, determining the routing iinformation of the first node.
In the present embodiment, the port attribute information of the Single port of first node is obtained, the port attribute information includes following any one or its combination：The information that whether the available information of each time slot or port speed ability are supported, the first node at least includes the Single port, and the port at least includes a time slot；According to the port attribute information, the routing iinformation of the first node is determined.Acquisition first node port attribute information is realized, so as to according to first node port attribute information, the path set up between first node and other nodes.
On the basis of above-described embodiment, whether the available information of each time slot includes following any one or its combination：Unusable gap information or, unused slots information；
The port speed ability supports that information includes following any one or its combination：Fractional rate or full rate.
Further, on the basis of above-described embodiment, the port attribute information is set to subobject, or, the port attribute information is set with sub- TLV.
Further, on the basis of above-described embodiment, whether the available information of each time slot is using following any one or its combination：Using bit bit-identify, or, using the field identification of port bandwidth.
Further, on the basis of above-described embodiment, the information that the port speed ability is supported uses bit bit-identify.Although disclosed herein implementation method as above, described content be only readily appreciate the present invention and use implementation method, be not limited to the present invention.Technical staff in any art of the present invention; do not depart from disclosed herein spirit and scope on the premise of; any modification and change, but scope of patent protection of the invention can be carried out in the form and details implemented, must be still defined by the scope of which is defined in the appended claims.
Claims (10)
1. a kind of acquisition methods of routing iinformation, it is characterised in that including：
The port attribute information of the Single port of first node is obtained, the port attribute information includes following
Meaning one or its combination：The information that whether the available information of each time slot, port speed ability are supported, described the
One node at least includes the Single port, and the port at least includes a time slot；
According to the port attribute information, the routing iinformation of the first node is determined.
2. method according to claim 1, it is characterised in that the whether available letter of each time slot
Breath includes following any one or its combination：Unusable gap information or, unused slots information；
The information that the port speed ability is supported includes following any one or its combination：Fractional rate or
Full rate.
3. method according to claim 1 and 2, it is characterised in that the port attribute information sets
Subobject is set to, or, the port attribute information is set with sub- TLV message formats.
4. the method according to claim any one of 1-3, it is characterised in that whether each time slot
Available information is using following any one or its combination：Using bit bit-identify, or, using port band
Field identification wide.
5. the method according to claim any one of 1-4, it is characterised in that the port speed energy
The information that power is supported uses bit bit-identify.
6. a kind of acquisition device of routing iinformation, it is characterised in that including：
Acquisition module, the port attribute information of the Single port for obtaining first node, the port attribute letter
Breath includes following any one or its combination：What whether the available information of each time slot, port speed ability were supported
Information, the first node at least includes the Single port, and the port at least includes a time slot；
Determining module, for according to the port attribute information, determining the routing iinformation of the first node.
7. device according to claim 6, it is characterised in that the whether available letter of each time slot
Breath includes following any one or its combination：Unusable gap information or, unused slots information；
The information that the port speed ability is supported includes following any one or its combination：Fractional rate or
Full rate.
8. the device according to claim 6 or 7, it is characterised in that the port attribute information sets
Subobject is set to, or, the port attribute information is set with sub- TLV message formats.
9. the device according to claim any one of 6-8, it is characterised in that whether each time slot
Available information is using following any one or its combination：Using bit bit-identify, or, using port band
Field identification wide.
10. the device according to claim any one of 6-9, it is characterised in that the port speed energy
The information that power is supported uses bit bit-identify.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849654.6A CN106803811A (en) | 2015-11-26 | 2015-11-26 | The acquisition methods and device of a kind of routing iinformation |
| PCT/CN2016/089459 WO2017088495A1 (en) | 2015-11-26 | 2016-07-08 | Method and apparatus for acquiring routing information |
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| CN201510849654.6A CN106803811A (en) | 2015-11-26 | 2015-11-26 | The acquisition methods and device of a kind of routing iinformation |
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| CN107612825A (en) * | 2017-08-04 | 2018-01-19 | 华为技术有限公司 | Establish the method and the network equipment in flexible Ethernet path |
| CN109302372A (en) * | 2017-07-24 | 2019-02-01 | 华为技术有限公司 | A kind of communication means, equipment and storage medium |
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| WO2019148342A1 (en) * | 2018-01-31 | 2019-08-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and devices for energy saving in communication network |
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| CN109450544A (en) * | 2018-12-27 | 2019-03-08 | ***通信集团江苏有限公司 | Optical line terminal OLT equipment, passive optical network PON data transferring method |
| CN112787924A (en) * | 2020-09-28 | 2021-05-11 | 中兴通讯股份有限公司 | Time slot cross path configuration method, computer device and readable medium |
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| WO2017088495A1 (en) | 2017-06-01 |
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