公开(公告)号：US20240113962A1

公开(公告)日：2024-04-04

申请号：US18529878

申请日：2023-12-05

Applicant: Cisco Technology, Inc.

Inventor： Clarence FILSFILS ,  Zafar ALI ,  Syed Kamran RAZA ,  Ahmed Refaat BASHANDY ,  Nagendra Kumar NAINAR ,  Carlos M. PIGNATARO ,  Jaganbabu RAJAMANICKAM ,  Rakesh GANDHI ,  Bhupendra YADAV ,  Faisal IQBAL

IPC: H04L45/00 ,  H04L41/0246 ,  H04L43/106 ,  H04L45/02

CPC classification number: H04L45/34 ,  H04L41/0246 ,  H04L43/106 ,  H04L45/02 ,  H04L45/20 ,  H04L45/304

Abstract: In one embodiment, a service chain data packet is instrumented as it is communicated among network nodes in a network providing service-level and/or networking operations visibility. The service chain data packet includes a particular header identifying a service group defining one or more service functions, and is a data packet and not a probe packet. A network node adds networking and/or service-layer operations data to the particular service chain data packet, such as, but not limited to, in the particular header. Such networking operations data includes a performance metric or attribute related to the transport of the particular service chain packet in the network. Such service-layer operations data includes a performance metric or attribute related to the service-level processing of the particular service chain data packet in the network.

公开(公告)号：US20200328971A1

公开(公告)日：2020-10-15

申请号：US15929610

申请日：2020-05-12

Applicant: Cisco Technology, Inc.

Inventor： Ahmed Refaat BASHANDY ,  Syed Kamran RAZA ,  Jisu BHATTACHARYA ,  Clarence FILSFILS

IPC: H04L12/741 ,  H04L29/06 ,  H04L12/723 ,  H04L12/715

Abstract: In one embodiment, a Segment Routing network node provides efficiencies in processing and communicating Internet Protocol packets in a network. This Segment Routing node typically advertises (e.g., using Border Gateway Protocol) its Segment Routing processing capabilities, such as Penultimate Segment Pop (PSP) and/or Ultimate Segment Pop (USP) of a Segment Routing Header (including in the context of a packet that has multiple Segment Routing Headers). Subsequently, an Internet Protocol Segment Routing packet having multiple Segment Routing Headers is received. The packet is processed according to a Segment Routing function, with is processing including removing a first one of the Segment Routing Headers and forwarding the resultant Segment Routing packet. The value of the Segments Left field in the first Segment Routing Header identifies to perform PSP when the value is one, to perform USP when the value is zero, or to perform other processing.

公开(公告)号：US20200274798A1

公开(公告)日：2020-08-27

申请号：US15929601

申请日：2020-05-12

Applicant: Cisco Technology, Inc.

Inventor： Clarence FILSFILS ,  Ahmed Refaat BASHANDY ,  Syed Kamran RAZA ,  Darren DUKES ,  Patrice BRISSETTE ,  Jisu BHATTACHARYA

IPC: H04L12/721 ,  H04L12/755 ,  H04L12/741 ,  H04L12/749

Abstract: In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.

公开(公告)号：US20200076727A1

公开(公告)日：2020-03-05

申请号：US16675083

申请日：2019-11-05

Applicant: Cisco Technology, Inc.

Inventor： Clarence FILSFILS ,  Zafar ALI ,  Syed Kamran RAZA ,  Ahmed Refaat BASHANDY ,  Nagendra Kumar NAINAR ,  Carlos M. PIGNATARO ,  Jaganbabu RAJAMANICKAM ,  Rakesh GANDHI ,  Bhupendra YADAV ,  Faisal IQBAL

IPC: H04L12/721 ,  H04L12/26 ,  H04L12/751 ,  H04L12/733 ,  H04L12/24

Abstract: In one embodiment, a service chain data packet is instrumented as it is communicated among network nodes in a network providing service-level and/or networking operations visibility. The service chain data packet includes a particular header identifying a service group defining one or more service functions, and is a data packet and not a probe packet. A network node adds networking and/or service-layer operations data to the particular service chain data packet, such as, but not limited to, in the particular header. Such networking operations data includes a performance metric or attribute related to the transport of the particular service chain packet in the network. Such service-layer operations data includes a performance metric or attribute related to the service-level processing of the particular service chain data packet in the network.