CN102957614A - Method and device for realizing dynamic routing - Google Patents

Method and device for realizing dynamic routing Download PDF

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Publication number
CN102957614A
CN102957614A CN2011102512119A CN201110251211A CN102957614A CN 102957614 A CN102957614 A CN 102957614A CN 2011102512119 A CN2011102512119 A CN 2011102512119A CN 201110251211 A CN201110251211 A CN 201110251211A CN 102957614 A CN102957614 A CN 102957614A
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passage
forward node
communication network
dcn
routing
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CN2011102512119A
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Chinese (zh)
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国辛纯
董杰
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN2011102512119A priority Critical patent/CN102957614A/en
Priority to PCT/CN2012/080557 priority patent/WO2013029499A1/en
Publication of CN102957614A publication Critical patent/CN102957614A/en
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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
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • 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
    • H04L45/66—Layer 2 routing, e.g. in Ethernet based MAN's

Abstract

The invention provides a method for realizing dynamic routing, so as to realize dynamic management and maintenance of MPLS (Multi Protocol Label Switching) network and paths under a non-IP (Internet Protocol) forwarding scene. The method comprises the following steps of: building a DCN (Data Communication Network) channel between two non-IP forwarding nodes, wherein the non-IP forwarding nodes are the nodes which do not support IP message forwarding; and transmitting the routing protocol information among the non-IP forwarding nodes through the DCN channel. In comparison with the prior art, on one hand, the method for realizing dynamic routing provided by the embodiment of the invention is not dependent on the IP paths, namely, the method can finish routing information interaction even among the non-IP forwarding nodes so as to build dynamic routing, on the other hand, the method can reduce the configuration load, and can be suitable for management and maintenance of large-scale networks, so that a dynamic routing protocol and a signaling protocol are more flexible to use.

Description

A kind of implementation method of dynamic routing and device
Technical field
The present invention relates to the communications field, relate in particular to a kind of implementation method and device of dynamic routing.
Background technology
(Multiple Protocol Label Switching Transport Profile is used in the multiprotocol label switching transmission; MPLS-TP) be a kind of MPLS technology towards transmission; it is based on basic framework and the forwarding mechanism of existing MPLS technology; expanded the characteristic of MPLS towards transmission; comprise that mainly operation management safeguards (Operation Administration Management; OAM); protection; several aspects such as control and management; at present; the technology relevant with MPLS-TP just in Internet Engineering task groups (Internet Engineering Task Force, IETF) by standardization.
Existing most of control protocol itself is based on Internet protocol (Internet Protocol, IP) grouping, generally by carry out exchange and the forwarding of IP datagram literary composition at the interface with IP ability, realizes the use of control protocol.The MPLS-TP Technology Need supports IP to transmit and non-IP transmits two kinds of scenes, but not the equipment interface that IP transmits under the scene does not support IP to transmit.Therefore, transmit for the non-IP in the MPLS-TP technology, existing solution be use the static management mode realize network path foundation, administer and maintain.
Yet, for the network of middle and small scale, existing static management mode can also realize reluctantly network path foundation, administer and maintain, for large-scale network, because configuration amount is very large, administer and maintain also very complicatedly, the flexibility of network is not good yet.
Summary of the invention
One aspect of the present invention provides a kind of implementation method and device of dynamic routing, to realize transmitting MPLS network under the scene and dynamic management, the maintenance in path at non-IP.
One aspect of the present invention provides a kind of implementation method of dynamic routing, and described method comprises:
Set up data communication network DCN passage between two non-IP forward node, described non-IP forward node is not for supporting the node of Internet protocol IP message repeating;
Transmit Routing Protocol information between the described non-IP forward node by described DCN passage.
One aspect of the present invention provides a kind of implement device of dynamic routing, and described device comprises:
The Path Setup module is used for setting up data communication network DCN passage between two non-IP forward node, described non-IP forward node is not for supporting the node of Internet protocol IP message repeating;
The Routing Protocol information transfer module is used for transmitting Routing Protocol information between the described non-IP forward node by the DCN passage that described Path Setup module is set up.
The implementation method of the dynamic routing that provides on the one hand from the invention described above as can be known owing to having set up data communication network DCN passage between non-IP forward node, the Routing Protocol information exchange between the non-IP forward node is crossed described DCN passage and is transmitted.Therefore, compared with prior art, on the one hand, the implementation method of the dynamic routing that the embodiment of the invention provides does not also rely on the IP path, namely, also mutual routing iinformation between non-IP forward node, thereby set up dynamic routing, on the other hand, the implementation method of the dynamic routing that the embodiment of the invention provides can reduce configuration amount, can be applicable to administering and maintaining of large-scale network, make the use of dynamic routing protocol and signaling protocol more flexible.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the below will do to introduce simply to the accompanying drawing of required use in prior art or the embodiment description, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those skilled in the art, can also obtain such as these accompanying drawings other accompanying drawing.
Fig. 1 is the implementation method schematic flow sheet of a kind of dynamic routing of providing of the embodiment of the invention;
Fig. 2 is G-ACH and the encapsulation format schematic diagram thereof that the embodiment of the invention provides;
Fig. 3 is the implement device structural representation of the dynamic routing that provides of the embodiment of the invention;
Fig. 4 is the implement device structural representation of the dynamic routing that provides of another embodiment of the present invention;
Fig. 5 is the implement device structural representation of the dynamic routing that provides of another embodiment of the present invention;
Fig. 6 is the implement device structural representation of the dynamic routing that provides of another embodiment of the present invention;
Fig. 7 is the implement device structural representation of the dynamic routing that provides of another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those skilled in the art obtain belongs to the scope of protection of the invention.
The embodiment of the invention provides a kind of implementation method of dynamic routing, and the method comprises: set up data communication network DCN passage between two non-IP forward node, described non-IP forward node is not for supporting the node of Internet protocol IP message repeating; Transmit Routing Protocol information between the described non-IP forward node by described DCN passage.
Seeing also accompanying drawing 1, is the implementation method schematic flow sheet of a kind of dynamic routing of providing of the embodiment of the invention, mainly comprises step:
S101 sets up data communication network (Data Communication Network, DCN) passage between two non-IP forward node.
In embodiments of the present invention, can be network management system (Network Management System, NMS), a non-IP forward node or other communication main bodys in two non-IP forward node wishing to communicate, set up the data communication network passage between two non-IP forward node, the embodiment of the invention does not limit this.So-called " non-IP forward node " refers to a kind of like this node in the MPLS-TP technology, this node has the data retransmission interface, but it does not support the forwarding of IP message, and non-IP forward node can not be that the node of direct neighbor maybe can be the node of crossing over heterogeneous networks.Because non-IP forward node is not supported the IP message repeating, therefore, at first sets up the DCN passage between two non-IP forward node that hope communicates.
In embodiments of the present invention, data communication network DCN passage is that MPLS-TP is based on generic associative channel head (Generic Associate Channel Header, G-ACH) (in-band) data communication network passage in a kind of band of definition, and G-ACH is a kind of expansion to the association channel head (Associate Channel Header, ACH) of RFC4385 definition.ACH is applied to pseudo-line (Presudo-Wire, PW) aspect, the mode of (in-band) in the band of being mainly used in is transmitted the specific message of management information such as OAM (detection of connectivity BFD, Ping etc.) and so on, for example, and detection of connectivity BFD, Ping order etc.The MPLS-TP standard is applied to G-ACH on PW, label switched path (Label Switching Path, LSP) and section (Segment) layer of MPLS-TP.
Basic structure and the ACH of the G-ACH of MPLS-TP standard are basically identical, mainly be that channel type (Channel Type) field to ACH is expanded, by the different dissimilar specific message of value sign payload (payload) part for transmitting of channel type (Channel Type) field, G-ACH and encapsulation format thereof are as shown in Figure 2, wherein G-ACH mainly is comprised of 4 parts, is described as follows:
0001 field: being used for identifying current message is the G-ACH message, and itself and data message (adopting 0000 sign) are distinguished mutually;
Version field: the version number that is used for identifying current message;
The Reserve field: this field is not used at present, and expansion is used after being left in advance;
Channel the type field: the message content that is used for payload (payload) field of sign G-ACH field back; by the different different type of messages of Channel the type field sign; comprise APS (Automatic Protection Switching; APS) message; (Operation Administration Management is safeguarded in operation management; OAM) message; signaling communication port (Signaling communication Channel; SCC) message and supervisory communications passage (Management Communication Channel, MCC) message etc.
S102 transmits Routing Protocol information between the described non-IP forward node by described DCN passage.
Because non-IP forward node is not supported the IP message repeating, therefore, can not carry out by the IP path forwarding of Routing Protocol information yet.In embodiments of the present invention, to transmit Routing Protocol information between the described non-IP forward node by the DCN passage of setting up between the non-IP forward node, for example, Interior Gateway Protocol (Interior Gateway Protocols, IGP) information, (the Open Shortest Path First that comprises that Open Shortest Path First, OSPF) protocol information, intermediate system-intermediate system (Intermediate System-Intermediate System, IS-IS) protocol information, routing information protocol (Routing Information Protocol, RIP) information and Border Gateway Protocol (Border Gateway Protocol, BGP) information etc.After the Routing Protocol information exchange was crossed the DCN passage transmission of setting up between the non-IP forward node, each non-IP forward node just can be shared routing iinformation, thereby sets up dynamic routing between each node.
The implementation method of the dynamic routing that provides from the invention described above embodiment as can be known owing to having set up data communication network DCN passage between non-IP forward node, the Routing Protocol information exchange between the non-IP forward node is crossed described DCN passage and is transmitted.Therefore, compared with prior art, on the one hand, the implementation method of the dynamic routing that the embodiment of the invention provides does not also rely on the IP forward-path, namely, also mutual routing iinformation between non-IP forward node, thereby set up dynamic routing, on the other hand, the implementation method of the dynamic routing that the embodiment of the invention provides can reduce configuration amount, can be applicable to administering and maintaining of large-scale network, make the use of dynamic routing protocol and signaling protocol more flexible.
In one embodiment of the invention, be based on static label switched path (Label Switching Path, LSP), between non-IP forward node, set up data communication network DCN passage.Particularly, can pass through way to manage quiescent state establishment LSP path, for example, can between non-IP forward node, set up data communication network DCN passage by network management system (Network Management System) or static configuration order.
Data communication network DCN passage comprises supervisory communications network (Management Communication Network, MCN) passage and signaling communication network network (Signaling Communication Network, SCN) passage, wherein, the MCN passage adopts the MCC field identification in the Channel the type field, be used for the transfer management signaling information, the SCN passage adopts the SCC field identification in the Channel the type field, is used for control channel information.In embodiments of the present invention, can transmit Routing Protocol information between the described non-IP forward node by signaling communication network network SCN passage.Based on the DCN passage of setting up, issue route is separately carried out the each other issue of route and sharing of routing iinformation between non-IP forward node.Finish after the routing iinformation issue, set up dynamic route between each non-IP forward node.Based on dynamic route, can transmit control signal between the non-IP forward node, set up the forwarding-table item based on label, for example, can find out port, outgoing label according to destination address, carry out the forwarding of message based on label.
In embodiments of the present invention, the Routing Protocol information of transmitting between the non-IP forward node by the DCN passage further comprises afterwards: by the dynamic control signal of DCN passage transmission, namely, setting up between the non-IP forward node of IP route, control signal by DCN passage operation state, for example, tag distribution protocol (Label Distribution Protocol, LDP) signaling or based on RSVP (the Resource Reservation Protocol-Traffic Engineering of traffic engineering expansion, RSVP-TE) signaling is set up the pseudo-line of dynamic LSP forward-path or PW; Similarly, to signalings such as the LSP path transmission OAM that sets up, protections, dynamic management and maintenance are carried out in the path based on the DCN passage.
In embodiments of the present invention, the Routing Protocol information of transmitting between the non-IP forward node by the DCN passage can also comprise afterwards: transmit signaling protocol by signaling communication network network SCN passage, namely on the LSP path of Dynamic Establishing, use signaling communication network network SCN passage to transmit signaling protocol, to the path remove, the maintenance and management in the paths such as optimization and bandwidth adjustment.
Seeing also accompanying drawing 3, is the implement device structural representation of the dynamic routing that provides of the embodiment of the invention.For convenience of explanation, only show the part relevant with the embodiment of the invention.The implement device of the dynamic routing of accompanying drawing 3 examples can be a node in the communication system, for example, routing device or network management system etc., this device can comprise Path Setup module 301 and Routing Protocol information transfer module 302, wherein:
Path Setup module 301 is used for setting up data communication network DCN passage between two non-IP forward node.
In the present embodiment, so-called " non-IP forward node " refers to a kind of like this node in the MPLS-TP technology, this node has the data retransmission interface, but it does not support the forwarding of Internet protocol IP message, and non-IP forward node can not be that the node of direct neighbor maybe can be the node of crossing over heterogeneous networks.Because non-IP forward node is not supported the IP message repeating, therefore, at first sets up the DCN passage by Path Setup module 301 between two non-IP forward node that hope communicates.
In the present embodiment, data communication network DCN passage is that MPLS-TP is based on (in-band) data communication network passage in a kind of band of G-ACH definition, and G-ACH is a kind of expansion to the association channel head (Associate Channel Header, ACH) of RFC4385 definition.ACH is applied to pseudo-line (Presudo-Wire, PW) aspect, the mode of (in-band) in the band of being mainly used in is transmitted the specific message of management information such as OAM (detection of connectivity BFD, Ping etc.) and so on, for example, and detection of connectivity BFD, Ping order etc.The MPLS-TP standard is applied to G-ACH on PW, label switched path (Label Switching Path, LSP) and section (Segment) layer of MPLS-TP.
Basic structure and the ACH of the G-ACH of MPLS-TP standard are basically identical, mainly be that channel type (Channel Type) field to ACH is expanded, by the different dissimilar specific message of value sign payload (payload) part for transmitting of channel type (Channel Type) field, G-ACH and encapsulation format thereof are as shown in Figure 2, wherein G-ACH mainly is comprised of 4 parts, is described as follows:
0001 field: being used for identifying current message is the G-ACH message, and itself and data message (adopting 0000 sign) are distinguished mutually;
Version field: the version number that is used for identifying current message;
The Reserve field: this field is not used at present, and expansion is used after being left in advance;
Channel the type field: the message content that is used for payload (payload) field of sign G-ACH field back; by the different different type of messages of Channel the type field sign; comprise APS (Automatic Protection Switching; APS) message; (Operation Administration Management is safeguarded in operation management; OAM) message; signaling communication port (Signaling communication Channel; SCC) message and supervisory communications passage (Management Communication Channel, MCC) message etc.
Routing Protocol information transfer module 302 is used for transmitting Routing Protocol information between the described non-IP forward node by the DCN passage that described Path Setup module 301 is set up.
Because non-IP forward node is not supported the IP message repeating, therefore, can not carry out by the IP path forwarding of Routing Protocol information yet.In the present embodiment, the DCN passage that Routing Protocol information transfer module 302 is set up by Path Setup module 301 transmits the Routing Protocol information between the non-IP forward node, for example, Interior Gateway Protocol (Interior Gateway Protocols, IGP) information, (the Open Shortest Path First that comprises that Open Shortest Path First, OSPF) protocol information, intermediate system-intermediate system (Intermediate System-Intermediate System, IS-IS) protocol information, routing information protocol (Routing Information Protocol, RIP) information and Border Gateway Protocol (Border Gateway Protocol, BGP) information etc.After the Routing Protocol information exchange was crossed the DCN passage transmission of setting up between the non-IP forward node, each non-IP forward node just can be shared routing iinformation, thereby sets up dynamic routing between each node.
Need to prove, in the execution mode of the implement device of above dynamic routing, the division of each functional module only illustrates, can be as required in the practical application, for example the facility of the configuration requirement of corresponding hardware or software implemented is considered, and the above-mentioned functions distribution is finished by different functional modules, the internal structure that is about to the implement device of described dynamic routing is divided into different functional modules, to finish all or part of function described above.And, in the practical application, corresponding functional module in the present embodiment can be to be realized by corresponding hardware, also can be finished by the corresponding software of corresponding hardware implement, for example, aforesaid Path Setup module can be to have the aforementioned hardware of setting up data communication network DCN passage between two non-IP forward node of execution, Path Setup device for example, thus also can be to carry out general processor or other hardware devices that the corresponding computer program is finished aforementioned functional; For another example aforesaid Routing Protocol information transfer module, can be to have to carry out the hardware that the aforementioned DCN passage of setting up by described Path Setup module (or Path Setup device) transmits the Routing Protocol informational function between the described non-IP forward node, Routing Protocol information transmitter for example, thus also can be to carry out general processor or other hardware devices (each embodiment that this specification provides can use the foregoing description principle) that the corresponding computer program is finished aforementioned functional.
The Path Setup module 301 of accompanying drawing 3 examples comprises that further static path sets up unit 401, such as the implement device of the dynamic routing of accompanying drawing 4 examples.Static path is set up the label switched path (Label Switching Path, LSP) that unit 401 is used for based on static state, sets up data communication network DCN passage between non-IP forward node.Particularly, can pass through way to manage quiescent state establishment label switched path (Label Switching Path, LSP).For example, can between non-IP forward node, set up data communication network DCN passage by network management system (Network Management System) or static configuration order.
Data communication network DCN passage comprises supervisory communications network (Management Communication Network, MCN) passage and signaling communication network network (Signaling Communication Network, SCN) passage, wherein, the MCN passage adopts the MCC field identification in the Channel the type field, be used for the transfer management signaling information, the SCN passage adopts the SCC field identification in the Channel the type field, is used for control channel information.The Routing Protocol information transfer module 302 of accompanying drawing 3 examples further comprises information transmission unit 501, such as the implement device of the dynamic routing of accompanying drawing 5 examples.Information transmission unit 501 is for the Routing Protocol information of transmitting by signaling communication network network SCN passage between the described non-IP forward node.Based on the DCN passage of setting up, issue route is separately carried out the each other issue of route and sharing of routing iinformation between non-IP forward node.Finish after the routing iinformation issue, set up dynamic route between each non-IP forward node.Based on dynamic route, can transmit control signal between the non-IP forward node, set up the forwarding-table item based on label, for example, can find out port, outgoing label according to destination address, carry out the forwarding of message based on label.
The implement device of the dynamic routing of accompanying drawing 5 examples may further include signaling protocol and transmits module 601, such as the implement device of the dynamic routing of accompanying drawing 6 examples.Signaling protocol transmits module 601 and is used for transmitting signaling protocol by signaling communication network network SCN passage, namely on the LSP path of Dynamic Establishing, use signaling communication network network SCN passage to transmit signaling protocol, to the path remove, the maintenance and management in the paths such as optimization and bandwidth adjustment.
Accompanying drawing 3 to the implement device of the dynamic routing of accompanying drawing 6 arbitrary examples may further include dynamic control signal and transmits module 701, such as the implement device of the dynamic routing of accompanying drawing 7 examples.Dynamically control signal transmits module 701 for passing through the dynamic control signal of DCN passage transmission, namely, setting up between the non-IP forward node of IP route, control signal by DCN passage operation state (for example, tag distribution protocol (Label Distribution Protocol, LDP) or RSVP-traffic engineering (Resource Reservation Protocol-Traffic Engineer, RSVP-TE)), set up the pseudo-line of dynamic LSP path or PW; Similarly, to signalings such as the LSP path transmission OAM that sets up, protections, dynamic management and maintenance are carried out in the path based on the DCN passage.
Need to prove, the contents such as the information interaction between each module/unit of said apparatus, implementation, since with the inventive method embodiment based on same design, its technique effect that brings is identical with the inventive method embodiment, particular content can referring to the narration among the inventive method embodiment, repeat no more herein.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction finish by program, such as following the whole bag of tricks one or more or all:
Set up data communication network DCN passage between two non-IP forward node, described non-IP forward node is not for supporting the node of Internet protocol IP message repeating;
Transmit Routing Protocol information between the described non-IP forward node by described DCN passage.
This program can be stored in the computer-readable recording medium, and storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
Implementation method and the device of above a kind of dynamic routing that the embodiment of the invention is provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (12)

1. the implementation method of a dynamic routing is characterized in that, described method comprises:
Set up data communication network DCN passage between two non-IP forward node, described non-IP forward node is not for supporting the node of Internet protocol IP message repeating;
Transmit Routing Protocol information between described two non-IP forward node by described DCN passage.
2. the method for claim 1 is characterized in that, the described data communication network DCN passage of setting up between two non-IP forward node comprises:
Based on the label switching path LSP of static state, between non-IP forward node, set up data communication network DCN passage.
3. method as claimed in claim 2 is characterized in that, described label switching path LSP based on static state is set up data communication network DCN passage and comprised between non-IP forward node:
Between non-IP forward node, set up data communication network DCN passage by network management system or static configuration order.
4. such as the described method of claims 1 to 3 any one, it is characterized in that, described DCN passage comprises signaling communication network network SCN passage;
The described Routing Protocol information of transmitting between the described non-IP forward node by described DCN passage comprises:
Transmit Routing Protocol information between the described non-IP forward node by described SCN passage.
5. method as claimed in claim 4 is characterized in that, the described Routing Protocol information of transmitting between the described non-IP forward node by described DCN passage further comprises afterwards:
Transmit signaling protocol by described SCN passage.
6. such as the described method of claim 1 to 5 any one, it is characterized in that, the described Routing Protocol information of transmitting between the described non-IP forward node by described DCN passage further comprises afterwards:
By the dynamic control signal of described DCN passage transmission.
7. the implement device of a dynamic routing is characterized in that, described device comprises:
The Path Setup module is used for setting up data communication network DCN passage between two non-IP forward node, described non-IP forward node is not for supporting the node of Internet protocol IP message repeating;
The Routing Protocol information transfer module is used for transmitting Routing Protocol information between the described non-IP forward node by the DCN passage that described Path Setup module is set up.
8. device as claimed in claim 7 is characterized in that, described Path Setup module comprises that static path sets up the unit, is used for the label switching path LSP based on static state, sets up data communication network DCN passage between two non-IP forward node.
9. device as claimed in claim 8 is characterized in that, described static path is set up the unit and specifically is used for setting up data communication network DCN passage by network management system or static configuration order between non-IP forward node.
10. device as claimed in claim 7 is characterized in that, described DCN passage comprises signaling communication network network SCN passage, and described Routing Protocol information transfer module comprises signaling communication network ruton road information transmission unit;
Described signaling communication network ruton road information transmission unit is for the Routing Protocol information of transmitting by described SCN passage between the described non-IP forward node.
11. device as claimed in claim 10 is characterized in that, described device further comprises:
Signaling protocol transmits module, is used for transmitting signaling protocol by described SCN passage.
12. such as the described device of claim 7 to 10 any one, it is characterized in that, described device further comprises:
Dynamically control signal transmits module, is used for by the dynamic control signal of described DCN passage transmission.
CN2011102512119A 2011-08-29 2011-08-29 Method and device for realizing dynamic routing Pending CN102957614A (en)

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CN109076020A (en) * 2016-03-30 2018-12-21 Idac控股公司 System and method for supporting Hypomobility equipment in next generation wireless network
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CN107566274B (en) * 2016-06-30 2020-08-28 丛林网络公司 Method, router and controller for bandwidth management
CN108111416A (en) * 2017-12-15 2018-06-01 盛科网络（苏州）有限公司 The method of Direct Recognition MPLS enclosed inside messages
CN108111416B (en) * 2017-12-15 2020-10-23 盛科网络（苏州）有限公司 Method for directly identifying MPLS internal encapsulation message

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Application publication date: 20130306