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公开(公告)号：US11750515B2
公开(公告)日：2023-09-05
申请号：US17237635
申请日：2021-04-22
发明人： Junda Yao , Zhibo Hu , Jianbin Xu
IPC分类号： H04L12/741 , H04L45/74 , H04L12/46
CPC分类号： H04L45/74 , H04L12/4633 , H04L12/4641
摘要： Embodiments of this application provide a data transmission method and apparatus. The method includes receiving, by a first device, a data packet, and extracting first address information of the data packet, where the first address information indicates a VNF; retrieving, by the first device based on the first address information, an SRv6 tunnel policy that corresponds to the first address information and that is from a SRv6 tunnel list; obtaining, by the first device, a forwarding path corresponding to a first SRv6 VPN SID, where the forwarding path is used as a data transmission path when the first device communicates with a second device corresponding to the first SRv6 VPN SID; and forwarding, by the first device, the data packet to the VNF based on the forwarding path.
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公开(公告)号：US11743204B2
公开(公告)日：2023-08-29
申请号：US17589334
申请日：2022-01-31
IPC分类号： G06F15/16 , H04L47/724 , H04L12/46 , H04L45/50 , H04L47/70
CPC分类号： H04L47/724 , H04L12/4633 , H04L45/507 , H04L47/825
摘要： This application describes a tunnel establishment method. The method may include receiving, by a first network device, a first request message sent by a previous-hop network device, where the first request message is used to request to obtain an RSVP-TE label of the first network device, the first network device supports RSVP-TE and SR-TE, and the previous-hop network device supports RSVP-TE. The method may also include that when the first network device determines that at least one network device in downstream network devices of the first network device on a path of a to-be-established tunnel supports SR-TE, establishing an SR-TE tunnel from the first network device to a second network device, and generating a tunnel identifier used to identify the SR-TE tunnel. Furthermore, the method may include sending a first response message to the previous-hop network device, where the first response message includes the tunnel identifier.
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公开(公告)号：US11722401B2
公开(公告)日：2023-08-08
申请号：US17137015
申请日：2020-12-29
IPC分类号： H04L45/28 , H04L45/00 , H04L45/50 , H04L45/745
CPC分类号： H04L45/28 , H04L45/20 , H04L45/22 , H04L45/507 , H04L45/745
摘要： This application discloses a method, an apparatus, and a system for processing a transmission path fault. In this application, after a first network device receives a packet, and when the first network device determines that a third network device is faulty, a difference between an initial value of a segment routing global block SRGB of the first network device and an initial value of an SRGB of the third network device is determined, and a backup path is determined based on the difference and a backup forwarding table. The first network device sends a first packet based on the backup forwarding table.
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公开(公告)号：US20210377155A1
公开(公告)日：2021-12-02
申请号：US17401101
申请日：2021-08-12
发明人： Chuang Chen , Zhibo Hu , Jie Dong , Junda Yao
IPC分类号： H04L12/761 , H04L12/721 , H04L12/751
摘要： A path calculation method, apparatus, and device, to implement network slicing. The path calculation method includes: obtaining an algorithm constraint supported by each of a plurality of network devices, where the algorithm constraint is a constraint of a forwarding path algorithm, and the forwarding path algorithm is used to calculate, for the network device, a forwarding path that meets the algorithm constraint; performing network topology division on the plurality of network devices, where network devices in a same network topology support a same algorithm constraint; and calculating a forwarding path between network devices in each network topology based on the algorithm constraint, of the forwarding path algorithm, corresponding to the network topology.
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公开(公告)号：US20210250292A1
公开(公告)日：2021-08-12
申请号：US17237635
申请日：2021-04-22
发明人： Junda Yao , Zhibo Hu , Jianbin Xu
IPC分类号： H04L12/741 , H04L12/46
摘要： Embodiments of this application provide a data transmission method and apparatus. The method includes receiving, by a first device, a data packet, and extracting first address information of the data packet, where the first address information indicates a VNF; retrieving, by the first device based on the first address information, an SRv6 tunnel policy that corresponds to the first address information and that is from a SRv6 tunnel list; obtaining, by the first device, a forwarding path corresponding to a first SRv6 VPN SID, where the forwarding path is used as a data transmission path when the first device communicates with a second device corresponding to the first SRv6 VPN SID; and forwarding, by the first device, the data packet to the VNF based on the forwarding path.
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公开(公告)号：US20210044538A1
公开(公告)日：2021-02-11
申请号：US17081274
申请日：2020-10-27
IPC分类号： H04L12/913 , H04L12/723 , H04L12/911 , H04L12/46
摘要： This application describes a tunnel establishment method. The method may include receiving, by a first network device, a first request message sent by a previous-hop network device, where the first request message is used to request to obtain an RSVP-TE label of the first network device, the first network device supports RSVP-TE and SR-TE, and the previous-hop network device supports RSVP-TE. The method may also include that when the first network device determines that at least one network device in downstream network devices of the first network device on a path of a to-be-established tunnel supports SR-TE, establishing an SR-TE tunnel from the first network device to a second network device in the at least one network device, and generating a tunnel identifier used to identify the SR-TE tunnel. Furthermore, the method may include sending, by the first network device, a first response message to the previous-hop network device, where the first response message includes the tunnel identifier.
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公开(公告)号：US12120018B2
公开(公告)日：2024-10-15
申请号：US18338450
申请日：2023-06-21
IPC分类号： H04L45/28 , H04L45/00 , H04L45/50 , H04L45/745
CPC分类号： H04L45/28 , H04L45/20 , H04L45/22 , H04L45/507 , H04L45/745
摘要： This application discloses a method, an apparatus, and a system for processing a transmission path fault. In this application, after a first network device receives a packet, and when the first network device determines that a third network device is faulty, a difference between an initial value of a segment routing global block SRGB of the first network device and an initial value of an SRGB of the third network device is determined, and a backup path is determined based on the difference and a backup forwarding table. The first network device sends a first packet based on the backup forwarding table.
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公开(公告)号：US11929915B2
公开(公告)日：2024-03-12
申请号：US17401101
申请日：2021-08-12
发明人： Chuang Chen , Zhibo Hu , Jie Dong , Junda Yao
CPC分类号： H04L45/16 , H04L45/02 , H04L45/124 , H04L45/127
摘要： A path calculation method, apparatus, and device, to implement network slicing. The path calculation method includes: obtaining an algorithm constraint supported by each of a plurality of network devices, where the algorithm constraint is a constraint of a forwarding path algorithm, and the forwarding path algorithm is used to calculate, for the network device, a forwarding path that meets the algorithm constraint; performing network topology division on the plurality of network devices, where network devices in a same network topology support a same algorithm constraint; and calculating a forwarding path between network devices in each network topology based on the algorithm constraint, of the forwarding path algorithm, corresponding to the network topology.
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公开(公告)号：US20230122099A1
公开(公告)日：2023-04-20
申请号：US18067475
申请日：2022-12-16
摘要： Embodiments of this application provide a packet forwarding method. In the method, a first network device generates a first packet, where the first packet includes a segment list corresponding to a forwarding path of the first packet, the segment list includes a plurality of sequentially arranged compressed segment identifiers, a length of each of the plurality of compressed segment identifiers is less than 128 bits, the plurality of compressed segment identifiers include a first-type compressed segment identifier and a second-type compressed segment identifier, a length of the first-type compressed segment identifier is a first length, a length of the second-type compressed segment identifier is a second length, and the first length is less than the second length. The first network device sends the first packet based on the segment list.
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公开(公告)号：US20210119907A1
公开(公告)日：2021-04-22
申请号：US17137015
申请日：2020-12-29
IPC分类号： H04L12/703 , H04L12/733 , H04L12/723 , H04L12/707 , H04L12/741
摘要： This application discloses a method, an apparatus, and a system for processing a transmission path fault. In this application, after a first network device receives a packet, and when the first network device determines that a third network device is faulty, a difference between an initial value of a segment routing global block SRGB of the first network device and an initial value of an SRGB of the third network device is determined, and a backup path is determined based on the difference and a backup forwarding table. The first network device sends a first packet based on the backup forwarding table.
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