CN112671646B - Information processing method, device and equipment and computer readable storage medium - Google Patents
Information processing method, device and equipment and computer readable storage medium Download PDFInfo
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- CN112671646B CN112671646B CN201910984679.5A CN201910984679A CN112671646B CN 112671646 B CN112671646 B CN 112671646B CN 201910984679 A CN201910984679 A CN 201910984679A CN 112671646 B CN112671646 B CN 112671646B
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Abstract
The invention discloses an information processing method, an information processing device, information processing equipment and a computer readable storage medium, and relates to the technical field of communication to reduce the complexity of configuration and maintenance. The method comprises the following steps: and sending VPN information to forwarding equipment so that the forwarding equipment associates the VPN information with BGP SR Policy to obtain a forwarding path. The embodiment of the invention can reduce the complexity of configuration and maintenance.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information processing method, an information processing apparatus, information processing equipment, and a computer-readable storage medium.
Background
SR (Segment Routing) is a forwarding mechanism based on source Routing. The SR divides the network path into segments one by one, and assigns SID (Segment ID) to the segments and the network nodes, and a specified forwarding path can be obtained by arranging SID (Segment List) in order. The SR technology is developed very rapidly, and the SR is expected to be widely applied in the future, especially in a backbone network scenario.
When the backbone network performs Traffic path optimization, a specific Traffic needs to be guided to an SR-TE (Segment Routing-Traffic Engineering) path for bearer. BGP (Border Gateway Protocol) SR Policy (Policy) currently proposes to associate a destination route with a Color and further to associate with a Candidate path and a Segment List, so as to implement carrying traffic to a specified destination address on a specific SR path.
In a scenario of Virtual Private Network (VPN) over SR-TE (VPN over SR-TE), when BGP SR Policy is used as a control plane protocol, a Color value needs to be set for a destination route, and the Color value is further associated with a unicast Path to guide traffic to enter SR-TE for forwarding. For the association between the Color value and the destination route, a corresponding BGP route publishing policy needs to be set, and when the network scale is large and the bearer service is large, a large number of BGP route policies are involved, and the configuration and maintenance difficulty is large.
Disclosure of Invention
The embodiment of the invention provides an information processing method, an information processing device, information processing equipment and a computer readable storage medium, which are used for reducing the complexity of configuration and maintenance.
In a first aspect, an embodiment of the present invention provides an information processing method applied to a control device, including:
and sending VPN information to forwarding equipment so that the forwarding equipment associates the VPN information with BGP SR Policy to obtain a forwarding path.
Wherein, the sending the information of the virtual private network VPN to the forwarding device includes:
and sending BGP SR Policy to the forwarding equipment, wherein the BGP SR Policy comprises VPN TLV (Tag, length, value, label Length content), and the VPN TLV carries the information of the VPN.
Wherein the information of the VPN comprises at least one of: the name of the VPN, RD (Route Distinguisher) of the VPN, and an inner-layer private network label of the VPN.
In a second aspect, an embodiment of the present invention provides an information processing method, applied to a forwarding device, including:
receiving VPN information sent by control equipment;
and associating the VPN information with BGP SR Policy to obtain a forwarding path.
The receiving of the VPN information sent by the control device includes:
and receiving BGP SR Policy sent by the control equipment, wherein the BGP SR Policy comprises VPN TLV, and the VPN TLV carries the information of the VPN.
Wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
In a third aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a control device, and includes:
and the sending module is used for sending VPN information to the forwarding equipment so that the forwarding equipment associates the VPN information with BGP SR Policy to obtain a forwarding path.
The sending module is specifically configured to send BGP SR Policy to the forwarding device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
In a fourth aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a forwarding device, and includes:
the receiving module is used for receiving VPN information sent by the control equipment;
and the processing module is used for associating the VPN information with BGP SR Policy to obtain a forwarding path.
The receiving module is specifically configured to receive BGP SR Policy sent by the control device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
In a fifth aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a control device, and includes: a processor and a transceiver;
the transceiver is configured to send VPN information to a forwarding device, so that the forwarding device associates the VPN information with BGP SR Policy to obtain a forwarding path.
The transceiver is specifically configured to send BGP SR Policy to the forwarding device, where the BGP SR Policy includes a VPN label length content VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
In a sixth aspect, an embodiment of the present invention provides an information processing apparatus, which is applied to a forwarding device, and includes: a processor and a transceiver;
the transceiver is used for receiving VPN information sent by the control equipment;
and the processor is used for associating the VPN information with BGP SR Policy to obtain a forwarding path.
The transceiver is specifically configured to receive the BGP SR Policy sent by the control device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
In a seventh aspect, an embodiment of the present invention further provides a communication device, including: the information processing method comprises the following steps of a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of the information processing method according to any one of the aspects.
In an eighth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps in the information processing method according to any one of the above-mentioned aspects.
In the embodiment of the invention, the VPN information can be associated with BGP SR Policy to further determine the forwarding path, so that a large number of BGP routing strategies are not required to be deployed. Therefore, the complexity of configuration and maintenance can be reduced by using the scheme of the embodiment of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flow chart of an information processing method provided by an embodiment of the invention;
FIG. 2 is a schematic format diagram of Sub-TLV in the embodiment of the present invention;
FIG. 3 is one of examples of Sub-TLVs in an embodiment of the present invention;
FIG. 4 is a second flowchart of an information processing method according to an embodiment of the present invention;
FIG. 5 is a system diagram of an embodiment of the present invention;
FIG. 6 is one of the configuration diagrams of an information processing apparatus provided by the embodiments of the present invention;
FIG. 7 is a second block diagram of an information processing apparatus according to an embodiment of the present invention;
fig. 8 is one of the structural diagrams of a communication apparatus provided by the embodiment of the present invention;
fig. 9 is a second block diagram of a communication device according to a second embodiment of the present invention;
FIG. 10 is a third block diagram of an information processing apparatus according to an embodiment of the present invention;
fig. 11 is a fourth structural diagram of an information processing apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of an information processing method provided by an embodiment of the present invention, applied to a control device, as shown in fig. 1, including the following steps:
In the embodiment of the present invention, the control device sends BGP SR Policy to the forwarding device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
As shown in fig. 2, taking the information of the VPN as an inner Private network Label of the VPN as an example, a format of Sub-TLVs (VPN Private Label TLVs) newly defined in the embodiment of the present invention is shown. In fig. 2, the meaning of each field is as follows:
(1) Type: representing a type;
(2) Length: representing the length of the TLVS message;
(3) VPN Private Label: VPN private network label.
The VPN Private Label can also carry information such as the name, RD, etc. of the VPN. Because the private network label at the inner layer of the VPN is encapsulated in the data packet, the private network label can be directly read in practical application without making the association between an additional data packet and the VPN, and therefore, the speed for acquiring the private network label at the inner layer of the VPN is higher.
As shown in fig. 3, is an example of newly defined Sub-TLVs. In this example, the passed VPN inner private network label is 1000.
In the embodiment of the invention, the VPN information can be associated with BGP SR Policy to further determine the forwarding path, so that a large number of BGP routing strategies are not required to be deployed. Therefore, the complexity of configuration and maintenance can be reduced by using the scheme of the embodiment of the invention.
Referring to fig. 4, fig. 4 is a flowchart of an information processing method provided in an embodiment of the present invention, and is applied to a forwarding device, as shown in fig. 4, including the following steps:
In this step, the forwarding device receives BGP SR Policy sent by the control device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN. Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
And step 402, associating the VPN information with BGP SR Policy to obtain a forwarding path.
In this step, after receiving the BGP SR Policy with VPN information, the forwarding device associates the VPN corresponding to the VPN information with the BGP SR Policy, and further forwards the VPN traffic through the Path indicated by the segment list in the candate Path in the BGP SR Policy.
In the embodiment of the invention, the VPN information can be associated with BGP SR Policy to further determine the forwarding path, so that a large number of BGP routing strategies do not need to be deployed. Therefore, the complexity of configuration and maintenance can be reduced by using the scheme of the embodiment of the invention.
BGP SR Policy is an extension based on MP-BGP (Multi Protocol BGP), and SR path Information is transferred through SR Policy NLRI (Network Layer accessibility Information) and Tunnel Encapsulation Attribute.
In practical operator network application scenarios, it is more often the case that traffic is isolated and carried by MPLS (Multi-Protocol Label Switching) VPNs, and therefore, it is desirable to adjust such specific MPLS VPN traffic as granularity, rather than to perform traffic adjustment based on destination address. If the same SR path strategy is adopted for the flow in the same VPN, the flow is guided by associating the Candidate path through the Color after the Color is associated with the network segment route for different network segments in the VPN. Therefore, in the scenario of VPN over SR-TE, under the condition that different service level bearing is not required according to the service address field, BGP SR Policy is simplified and Color parameters are omitted, so that the release strategy of MP-BGP VPN routing can be simplified, and VPN inner-layer private network labels are directly written into the BGP SR Policy to guide VPN flow to enter SR-TE.
In the embodiment of the invention, new Sub-TLVs are expanded to transfer VPN information, so that the flow of a specific MPLS VPN is related to BGP SR Policy and is carried by a corresponding SR-TE tunnel.
Fig. 5 is a system architecture diagram according to an embodiment of the present invention. As shown in fig. 5, the system includes a controller and a forwarding device. Wherein, the controller issues BGP SR Policy to the forwarding device. In the embodiment of the invention, the Tunnel Encapsulation Attribute of BGP SR Policy is expanded, and VPN Private Label Sub-TLVs are introduced to express and transmit the inner layer Private network Label information of VPN. And the forwarding equipment associates the specific VPN flow with the BGP SR Policy according to the received VPN Private Label Sub-TLVs, so as to introduce the specific VPN flow into a corresponding SR path and complete the actual forwarding of the corresponding service flow.
The embodiment of the invention also provides an information processing device which is applied to the control equipment. Referring to fig. 6, fig. 6 is a block diagram of an information processing apparatus according to an embodiment of the present invention. Because the principle of solving the problem of the information processing device is similar to the information processing method in the embodiment of the invention, the implementation of the information processing device can refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 6, the information processing apparatus 600 includes: a sending module 601, configured to send VPN information to a forwarding device, so that the forwarding device associates the VPN information with BGP SR Policy to obtain a forwarding path.
The sending module is specifically configured to send BGP SR Policy to the forwarding device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
The embodiment of the invention also provides an information processing device which is applied to the forwarding equipment. Referring to fig. 7, fig. 7 is a block diagram of an information processing apparatus according to an embodiment of the present invention. Because the principle of solving the problem of the information processing device is similar to the information processing method in the embodiment of the invention, the implementation of the information processing device can refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 7, the information processing apparatus 700 includes: a receiving module 701, configured to receive VPN information sent by a control device; and the processing module 702 is configured to associate the information of the VPN with BGP SR Policy to obtain a forwarding path.
The receiving module 701 is specifically configured to receive the BGP SR Policy sent by the control device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries the information of the VPN.
Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and technical effects are similar, which are not described herein again.
As shown in fig. 8, a communication device according to an embodiment of the present invention, applied to a control device, includes: the processor 800, which is used to read the program in the memory 820, executes the following processes:
the processor 800, which is used to read the program in the memory 820, executes the following processes: the information of the VPN is sent to the forwarding device through the transceiver 810, so that the forwarding device associates the information of the VPN with the BGP SR Policy to obtain a forwarding path.
A transceiver 810 for receiving and transmitting data under the control of the processor 800.
Wherein in fig. 8 the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 800 and various circuits of memory represented by memory 820 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.
The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.
The processor 800 is further configured to read the program and execute the following steps:
and sending BGP SR Policy to the forwarding equipment, wherein the BGP SR Policy comprises VPN TLV, and the VPN TLV carries the VPN information.
Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
As shown in fig. 9, the communication device according to the embodiment of the present invention is applied to a forwarding device, and includes: a processor 900 for reading the program in the memory 920, executing the following processes:
a processor 900 for reading the program in the memory 920, executing the following processes: receiving information of the VPN transmitted by the control device through the transceiver 910; and associating the VPN information with BGP SR Policy to obtain a forwarding path.
A transceiver 910 for receiving and transmitting data under the control of the processor 900.
In fig. 9, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 900, and various circuits, represented by memory 920, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 910 may be a plurality of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.
The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.
The processor 900 is further configured to read the program and execute the following steps:
and receiving BGP SR Policy sent by the control equipment, wherein the BGP SR Policy comprises VPN TLV, and the VPN TLV carries the information of the VPN.
Wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
As shown in fig. 10, an information processing apparatus according to an embodiment of the present invention, applied to a control device, includes: a processor 1001 and a transceiver 1002.
The transceiver 1002 is configured to send VPN information to a forwarding device, so that the forwarding device associates the VPN information with a BGP SR Policy to obtain a forwarding path.
The transceiver is specifically configured to send BGP SR Policy to the forwarding device, where the BGP SR Policy includes a VPN label length content VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
As shown in fig. 11, an information processing apparatus according to an embodiment of the present invention is applied to a forwarding device, and includes: a processor 1101 and a transceiver 1102.
The transceiver 1102 is configured to receive VPN information sent by a control device;
the processor 1101 is configured to associate the information of the VPN with a BGP SR Policy to obtain a forwarding path.
The transceiver is specifically configured to receive BGP SR Policy sent by the control device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Furthermore, a computer-readable storage medium of an embodiment of the present invention stores a computer program that is executable by a processor to implement:
and sending VPN information to forwarding equipment so that the forwarding equipment associates the VPN information with BGP SR Policy to obtain a forwarding path.
Wherein, the sending the information of the virtual private network VPN to the forwarding device includes:
and sending BGP SR Policy to the forwarding equipment, wherein the BGP SR Policy comprises a VPN label length content VPN TLV, and the VPN TLV carries the information of the VPN.
Wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
Furthermore, a computer-readable storage medium of an embodiment of the present invention stores a computer program executable by a processor to implement:
receiving VPN information sent by control equipment;
and associating the VPN information with BGP SR Policy to obtain a forwarding path.
The receiving information of the VPN sent by the control device includes:
and receiving BGP SR Policy sent by the control equipment, wherein the BGP SR Policy comprises VPN TLV, and the VPN TLV carries the information of the VPN.
Wherein the information of the VPN comprises at least one of: the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately and physically included, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An information processing method applied to a control device, the method comprising:
sending information of a Virtual Private Network (VPN) to forwarding equipment so that the forwarding equipment associates the information of the VPN with a Border Gateway Protocol (BGP) Policy (SR) Policy to obtain a forwarding path;
the sending of the information of the virtual private network VPN to the forwarding device includes:
and sending BGP SR Policy to the forwarding equipment, wherein the BGP SR Policy comprises a VPN label length content VPN TLV, and the VPN TLV carries the information of the VPN.
2. The method of claim 1, wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and the inner private network label of the VPN.
3. An information processing method applied to a forwarding device is characterized by comprising the following steps:
receiving VPN information sent by control equipment;
correlating the VPN information with BGP SR Policy to obtain a forwarding path;
the receiving of the VPN information sent by the control device includes:
and receiving BGP SR Policy sent by the control equipment, wherein the BGP SR Policy comprises a VPN TLV, and the VPN TLV carries the VPN information.
4. The method of claim 3, wherein the information of the VPN comprises at least one of:
the name of the VPN, the routing specifier of the VPN, and an inner layer private network label of the VPN.
5. An information processing apparatus applied to a control device, characterized by comprising:
the system comprises a sending module, a forwarding device and a forwarding module, wherein the sending module is used for sending VPN information to the forwarding device so that the forwarding device associates the VPN information with BGP SR Policy to obtain a forwarding path;
the sending module is specifically configured to send BGP SR Policy to the forwarding device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
6. An information processing apparatus applied to a forwarding device, comprising:
the receiving module is used for receiving VPN information sent by the control equipment;
the processing module is used for associating the VPN information with BGP SR Policy to obtain a forwarding path;
the receiving module is specifically configured to receive BGP SR Policy sent by the control device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
7. An information processing apparatus applied to a control device, characterized by comprising: a processor and a transceiver;
the transceiver is configured to send VPN information to a forwarding device, so that the forwarding device associates the VPN information with a BGP SR Policy to obtain a forwarding path;
the transceiver is specifically configured to send a BGP SR Policy to the forwarding device, where the BGP SR Policy includes a VPN label length content VPN TLV, and the VPN TLV carries information of the VPN.
8. An information processing apparatus applied to a forwarding device, comprising: a processor and a transceiver;
the transceiver is used for receiving VPN information sent by the control equipment;
the processor is used for associating the VPN information with BGP SR Policy to obtain a forwarding path;
the transceiver is specifically configured to receive BGP SR Policy sent by the control device, where the BGP SR Policy includes a VPN TLV, and the VPN TLV carries information of the VPN.
9. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; -wherein the processor, for reading a program in the memory, implements the steps in the method of any of claims 1 to 2; or implementing a step in a method according to any of claims 3 to 4.
10. A computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the steps in the method according to any one of claims 1 to 2; or to implement a step in a method according to any of claims 3 to 4.
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| US10637889B2 (en) * | 2015-07-23 | 2020-04-28 | Cisco Technology, Inc. | Systems, methods, and devices for smart mapping and VPN policy enforcement |
| CN106713137B (en) * | 2015-11-13 | 2020-02-18 | 中国电信股份有限公司 | VPN method, device and system based on segmented routing and SDN technology |
| US10454821B2 (en) * | 2016-10-14 | 2019-10-22 | Cisco Technology, Inc. | Creating and maintaining segment routed traffic engineering policies via border gateway protocol |
| US10506083B2 (en) * | 2017-06-27 | 2019-12-10 | Cisco Technology, Inc. | Segment routing gateway storing segment routing encapsulating header used in encapsulating and forwarding of returned native packet |
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