公开(公告)号：US20220278923A1

公开(公告)日：2022-09-01

申请号：US17638783

申请日：2020-05-09

Applicant: ZTE CORPORATION

Inventor： Shaofu PENG ,  Detao ZHAO ,  Hong TANG ,  Yongqing ZHU

IPC: H04L45/00 ,  H04L45/02

Abstract: Disclosed are a method and apparatus for sending a segment routing traffic engineering (SR-TE) policy, a method and apparatus for receiving an SR-TE policy, a network element, and a computer-readable storage medium. The method for sending an SR-TE policy includes creating an SR-TE policy instance by a first network element; and sending an SR-TE policy corresponding to the SR-TE policy instance to a second network element by the first network element, where the SR-TE policy carries path identifier information and primary/standby state information of a segment list so as to support fast reroute (FRR) of a segment list level.

公开(公告)号：US20230033298A1

公开(公告)日：2023-02-02

申请号：US17758517

申请日：2020-12-17

Applicant: ZTE CORPORATION

Inventor： Shaofu PENG ,  Detao ZHAO

IPC: H04L45/302 ,  H04L45/00 ,  H04L45/12

Abstract: A routing method, a routing device and a computer-readable storage medium are disclosed. The routing method includes: allocating, to each of network slices corresponding to different algorithm types, a segment identifier corresponding to a respective algorithm type, and flooding the segment identifier through an IGP (S100); configuring, for each network slice, a QoS policy corresponding to a respective algorithm type (S200); and, forwarding a packet based on the segment identifier and the QoS policy (S300).

公开(公告)号：US20220014394A1

公开(公告)日：2022-01-13

申请号：US17297332

申请日：2019-08-30

Applicant: ZTE Corporation

Inventor： Detao ZHAO ,  Shaofu PENG

IPC: H04L12/46 ,  H04L12/715 ,  H04L12/723

Abstract: A path construction method and related devices are disclosed. The method may include: advertising, by a second PE node, a first VPN route to a first PE node through an MP-BGP signaling channel, such that the first PE node is able to determine a label forwarding path to a first VPN Prefix based on a first transmission path descriptor (TPD) carried in the first VPN route received; where the first TPD is configured to identify the label forwarding path for a first VPN message to reach a BGP next hop.

公开(公告)号：US20240396825A1

公开(公告)日：2024-11-28

申请号：US18690335

申请日：2022-09-05

Applicant: ZTE CORPORATION

Inventor： Detao ZHAO

IPC: H04L45/02

Abstract: The present disclosure provides a path establishment method, applied to a second autonomous system border router (ASBR) in a second autonomous domain, including: receiving a cross-domain routing advertised by a first ASBR in a first autonomous domain; selecting a cross-domain link between the second ASBR and the first ASBR according to an AS number, a node identifier and a flexible algorithm identifier carried in the cross-domain routing; and performing intra-domain advertisement in the second autonomous domain on a prefix of the cross-domain routing, a flexible algorithm identifier corresponding to the prefix, and an accumulated metric value of the prefix, according to the cross-domain link, and generating a cross-domain routing based on an intra-domain routing protocol in the second autonomous domain. The present disclosure further provides a routing advertisement method, a service data transmission method, an autonomous system border router, a provider edge, and a computer-readable storage medium.

公开(公告)号：US20240154902A1

公开(公告)日：2024-05-09

申请号：US18549115

申请日：2022-03-04

Applicant: ZTE CORPORATION

Inventor： Ran CHEN ,  Detao ZHAO

IPC: H04L45/00 ,  H04L45/50

CPC classification number: H04L45/34 ,  H04L45/50

Abstract: Provided are a packet forwarding method and system. a source node in a first SR-MPLS domain sends, based on an SR-Policy, a packet to a destination node in a second SR-MPLS domain, wherein an SR-Policy segment list of the packet includes a BSID, so that the packet passes through an SRv6 domain between the first SR-MPLS domain and the second SR-MPLS domain; After receiving the packet, the first border node replaces the BSID with the SRv6-Policy which destination address is the second border node, the second border node forwards the packet based on the SRv6-Policy, and after receiving the packet, the second border node decapsulates the IPv6 header and its extension header according to the behavior indication information in the SR-Policy, perform an MPLS label forwarding table lookup, so as to forward the packet within the second SR-MPLS domain, until the packet is forwarded to the destination node.