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公开(公告)号:US20220417137A1
公开(公告)日:2022-12-29
申请号:US17811570
申请日:2022-07-08
发明人: 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分类号: H04L45/00 , H04L43/106 , H04L45/02 , H04L41/0246
摘要: 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.
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公开(公告)号:US11438445B2
公开(公告)日:2022-09-06
申请号:US15929610
申请日:2020-05-12
IPC分类号: H04L29/06 , H04L69/22 , H04L69/324 , H04L45/00 , H04L67/10 , H04L45/02 , H04L45/50 , H04L12/46 , H04L45/74 , H04L61/5007 , H04L49/35 , H04L67/63 , H04L45/741 , H04L101/659 , H04L61/2503 , H04L43/028 , H04L9/40 , H04L45/745
摘要: 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.
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公开(公告)号:US20190104058A1
公开(公告)日:2019-04-04
申请号:US15841276
申请日:2017-12-13
发明人: 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分类号: H04L12/721 , H04L12/751 , H04L12/26
摘要: In one embodiment, segment routing (SR) network processing of packets is performed which includes operations signaling and processing of packets in manners providing processing and/or memory efficiencies. One embodiment includes acquiring a segment routing particular packet by a particular router in a network. Responsive to the particular router data plane ascertained during fast path processing by a fast path processing unit that the segment routing particular packet is to be Operations, Administration, and Maintenance (OAM) processed by a different processing unit in the particular router, communicating a time stamp of a current time and the segment routing particular packet including a segment routing header that includes OAM signaling from said fast path processing to the different processing unit, with fast path processing being hardware-based packet processing by the fast path processing unit. The segment routing particular packet is OAM processing by the different processing unit.
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公开(公告)号:US11388088B2
公开(公告)日:2022-07-12
申请号:US16675083
申请日:2019-11-05
发明人: 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分类号: H04L45/00 , H04L43/106 , H04L45/02 , H04L41/0246 , H04L101/659 , H04L45/302 , H04L45/741
摘要: In one embodiment, segment routing (SR) network processing of packets is performed which includes operations signaling and processing of packets in manners providing processing and/or memory efficiencies. One embodiment includes acquiring a segment routing particular packet by a particular router in a network. Responsive to the particular router data plane ascertained during fast path processing by a fast path processing unit that the segment routing particular packet is to be Operations, Administration, and Maintenance (OAM) processed by a different processing unit in the particular router, communicating a time stamp of a current time and the segment routing particular packet including a segment routing header that includes OAM signaling from said fast path processing to the different processing unit, with fast path processing being hardware-based packet processing by the fast path processing unit. The segment routing particular packet is OAM processing by the different processing unit.
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公开(公告)号:US20190215267A1
公开(公告)日:2019-07-11
申请号:US15866176
申请日:2018-01-09
发明人: Clarence Filsfils , Ahmed Refaat Bashandy , Syed Kamran Raza , Darren Dukes , Patrice Brissette , Jisu Bhattacharya
IPC分类号: H04L12/721 , H04L12/755 , H04L12/741
CPC分类号: H04L45/566 , H04L45/021 , H04L45/34 , H04L45/741 , H04L45/745
摘要: 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.
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公开(公告)号:US20220232112A1
公开(公告)日:2022-07-21
申请号:US17713944
申请日:2022-04-05
IPC分类号: H04L69/22 , H04L69/324 , H04L45/00 , H04L67/10 , H04L45/50 , H04L12/46 , H04L45/74 , H04L61/5007 , H04L49/35 , H04L67/63 , H04L45/741
摘要: 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.
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公开(公告)号:US10652144B2
公开(公告)日:2020-05-12
申请号:US15866176
申请日:2018-01-09
发明人: Clarence Filsfils , Ahmed Refaat Bashandy , Syed Kamran Raza , Darren Dukes , Patrice Brissette , Jisu Bhattacharya
IPC分类号: H04L12/721 , H04L12/755 , H04L12/741 , H04L12/749
摘要: 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.
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公开(公告)号:US10469367B2
公开(公告)日:2019-11-05
申请号:US15841276
申请日:2017-12-13
发明人: 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分类号: H04L12/721 , H04L12/26 , H04L12/751 , H04L12/733 , H04L29/12 , H04L12/725 , H04L12/749
摘要: In one embodiment, segment routing (SR) network processing of packets is performed which includes operations signaling and processing of packets in manners providing processing and/or memory efficiencies. One embodiment includes acquiring a segment routing particular packet by a particular router in a network. Responsive to the particular router data plane ascertained during fast path processing by a fast path processing unit that the segment routing particular packet is to be Operations, Administration, and Maintenance (OAM) processed by a different processing unit in the particular router, communicating a time stamp of a current time and the segment routing particular packet including a segment routing header that includes OAM signaling from said fast path processing to the different processing unit, with fast path processing being hardware-based packet processing by the fast path processing unit. The segment routing particular packet is OAM processing by the different processing unit.
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公开(公告)号:US10892987B2
公开(公告)日:2021-01-12
申请号:US15929601
申请日:2020-05-12
发明人: Clarence Filsfils , Ahmed Refaat Bashandy , Syed Kamran Raza , Darren Dukes , Patrice Brissette , Jisu Bhattacharya
IPC分类号: H04L12/721 , H04L12/755 , H04L12/741 , H04L12/749
摘要: 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.
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公开(公告)号:US10652366B2
公开(公告)日:2020-05-12
申请号:US16006897
申请日:2018-06-13
IPC分类号: H04L29/06 , H04L29/08 , H04L12/721 , H04L12/46 , H04L12/741 , H04L29/12 , H04L12/931 , H04L12/749 , H04L12/26
摘要: In one embodiment, a Segment Routing network node provides efficiencies in processing and communicating Internet Protocol packets in a network. An Internet Protocol (IP) packet, possibly a Segment Routing packet, is received by a node in a network, which updates the packet according to a corresponding Segment Routing Policy, that includes an ordered list of Segment Identifiers comprising, in first-to-last order, a first Segment Identifier followed by one or more subsequent Segment Identifiers. The updating of the packet includes setting the Destination Address to the first Segment Identifier, and adding said one or more subsequent Segment Identifiers, but not the first Segment Identifier, in a first Segment Routing Header. The updated packet is sent into the network without the first Segment Identifier being added to a Segment Routing Header in response to the Segment Routing Policy.
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