Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Tianran Zhou

Haoyu Song

Zhenbin Li

Stewart Frederick Bryant

Min Liu

Andrew G Malis

Liang Zhang

Jie Dong

James Neil Guichard

Shunwan Zhuang

Guoyi Chen

Yali Wang

Yuezhong Song

Weidong Li

Haibo Wang

Yuanlong Jiang

Yinben Xia

Ling Xu

Shuping Peng

Yunan Gu

Xuesong Geng

Bo Lu

Naiwen Wei

Xiaofei Wang

Runsheng Han

Haifeng Wu

Dachao Yang

Cairen Weng

Wenjing Yu

A method for detecting a multicast service flow includes receiving, by a first node, a multicast service flow from a multicast source; encapsulating, by the first node, an In-situ Flow Information Telemetry (IFIT) extension header into a data packet in the multicast service flow, where the IFIT extension header includes a first detection identifier, and the first detection identifier is used to identify the detected multicast service flow; copying, by the first node according to a quantity of next-hop second nodes of the first node, the data packet encapsulated with the IFIT extension header; and sending, by the first node to each next-hop second node, the data packet encapsulated with the IFIT extension header. The first node is a head node in a multicast detection domain.

Method for detecting multicast service flow and related apparatus

A protection switching method provides a manner of transferring a protection switching message on an SRv6 data plane. In this manner, a first node can switch, after a fault occurs on an end-to-end transmission path of forward service traffic of the first node, a transmission path of the forward service traffic of the first node to another end-to-end transmission path, and send the forward service traffic through the transmission path after switching. In this manner, the first node only needs to store information about the another transmission path, and an intermediate node does not need to maintain a large amount of path state information and path configuration information.

Method and apparatus for performing protection switching in segment routing SR network

A method for determining a processing capability includes: a first node sends a message to a second node. The message includes extension header processing capability information, and the extension header processing capability information is used to indicate a processing capability of the first node for an Internet Protocol (IP) version 6 (IPv6) extension header. After receiving the message, the second node obtains, based on the extension header processing capability information, the processing capability of the first node for the IPv6 extension header to determine whether the first node needs to forward or receive a packet.

Method for determining processing capability, node, and system

A path detection method includes a source node that sends a first detection packet including multipath detection indication information and detection data collection indication information, to detect a plurality of paths from the source node to a destination node. A first node directly sends the first detection packet including the multipath detection indication information and the detection data collection indication information to a next-hop node such that the next-hop node of the first node collects detection data in a manner of the first node and no path from the source node to the destination node is missed.

Path detection method, apparatus, and computer storage medium

An operation, administration, and maintenance (OAM) method includes a first network device determines OAM configuration information of a target application, where the OAM configuration information includes an OAM measurement manner, and the first network device forwards the OAM configuration information to a second network device.

Network OAM method and apparatus

A method for collecting bit error information is provided. According to the method, a head node may encapsulate indication information into an IPv6 extension header of an IPv6 measurement request packet. The indication information indicates at least one intermediate node on a transmission path of the IPv6 measurement request packet to record bit error information into the IPv6 extension header. According to the application, the bit error information of the intermediate node on the transmission path can be collected.

Method and apparatus for collecting bit error information

A method for configuring performance measurement indication information and a related device. The method includes: a control node determines performance measurement indication information and sends a first advertisement packet in the communication network based on the BGP, where the first advertisement packet carries the performance measurement indication information, so that a plurality of forwarding nodes configure the performance measurement indication information on the plurality of forwarding nodes. In this way, when a data flow on which performance measurement is to be performed is transmitted between a plurality of different ASs, each forwarding node in the different ASs may obtain the performance measurement indication information from the first advertisement packet.

Method for configuring performance measurement indication information and related device

A method according to embodiments of this application includes: A first network device sends a first packet to a second network device, where the first packet includes first indication information, and the first indication information indicates a support status of an iFIT capability corresponding to the first network device or a first service module included in the first network device. The first network device sends the packet to the second network device, to notify the support status of the IFIT capability of the first network device. In this way, the second network device can determine, based on the iFIT capability of the first network device, whether to encapsulate a measurement header, to avoid that a service packet cannot be correctly processed because the first network device cannot strip the measurement header from the service packet.

Capability notification method and related device

A mechanism for adaptively performing in-band network telemetry (INT) by a network controller is disclosed. The mechanism includes receiving one or more congestion indicators from a collector. An adjusted sampling rate is generated. The adjusted sampling rate is a specified rate of insertion of instruction headers for INT and is generated based on the congestion indicators. The adjusted sampling rate is transmitted to a head node, which is configured to perform INT via instruction header insertion into user packets.

Adaptive in-band network telemetry for full network coverage

The disclosure relates to technology for sending network management information in a network. A source edge node modifies data packets by encapsulating an operations, administration and maintenance (OAM) header in the data packets traversing a data path, and the OAM header includes a first indicator field. The source edge node also inserts a segment size field into the OAM header of the data packets based on an indication by the first indicator field, the segment size field indicating the data path is partitioned into segments based on a value of the segment size field.

In-situ OAM trace type extension with cascade bitmap and segment in-situ OAM

Described herein are methods and devices (e.g., routers) that add in-network services to a multiprotocol label switching (MPLS) network. A method can include a router of the MPLS network receiving a packet and modifying the packet by adding one or more MPLS extension headers, adding a header of the extension header(s), and adding an indication within an MPLS label stack that one or more MPLS extension headers have been added to the packet. The method can also include the router forwarding the packet as modified to another router of the MPLS network. In certain embodiments, an extension header label (EHL) within a label value field of a label stack entry indicates that one or more MPLS extension headers have been added to the packet. In other embodiments, a forward equivalent class (FEC) indicates that one or more MPLS extension headers follow the MPLS label stack.

MPLS extension headers for in-network services

A traffic detection method, apparatus, and system are provided. A first network device obtains a packet, where the packet is any packet of the traffic. The first network device adds a detection flag and detection indication information to the packet to update the packet, where the detection flag is used to indicate a position of the detection indication information, where the detection indication information includes a first flag, and the first flag is used to indicate whether the traffic is to-be-detected traffic. The first network device sends an updated packet to a second network device. According to this method, traffic performance is detected, and flexibility and extensiveness of traffic performance detection are improved.

Traffic detection method, apparatus, and system

The method includes, when a first data packet of a data stream is received and the first data packet is not the first data packet of the data stream, determining a time interval between a first receiving time and a second receiving time, where the first receiving time is when the first data packet is received, and the second receiving time is when a second data packet is received, obtaining a sent data amount of the data stream, and determining a transmission path of the first data packet from a plurality of available transmission paths based on the time interval and the sent data amount, and transmitting the first data packet through the determined transmission path.

Data transmission method and apparatus

A data packet detection method, a device, and a system are disclosed. The method includes: receiving first control information sent by a controller; receiving a first data packet sent by a previous-hop network device of a first network device, where the first data packet includes first detection information, and the first detection information includes a first detection node identifier, a first sequence number, and first collection information; determining, based on the first collection information, first collected data corresponding to the first collection information, and updating the first detection node identifier; and sending, to a next-hop network device of the first network device, the first data packet carrying the updated first detection information. This implements information telemetry on a data packet on a transmission path.

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Beijing, China

Tianran Zhou