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公开(公告)号：US11627016B2
公开(公告)日：2023-04-11
申请号：US16821965
申请日：2020-03-17
Applicant: Cisco Technology, Inc.
Inventor： Pablo Camarillo Garvia , Hendrikus G. P. Bosch , Clarence Filsfils
Abstract: In one embodiment, a segment routing and tunnel exchange provides packet forwarding efficiencies in a network, including providing an exchange between a segment routing domain and a packet tunnel domain. One application includes the segment routing and tunnel exchange interfacing segment routing packet forwarding (e.g., in a Evolved Packet Core (EPC) and/or 5-G user plane) and packet tunnel forwarding in access networks (e.g., replacing a portion of a tunnel between an access node and a user plane function for accessing a corresponding data network). In one embodiment, a network provides mobility services using a segment routing data plane that spans segment routing and tunnel exchange(s) and segment routing-enabled user plane functions. One embodiment uses the segment routing data plane without any modification to a (radio) access network (R)AN (e.g., Evolved NodeB, Next Generation NodeB) nor to user equipment (e.g., any end user device).
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公开(公告)号：US20230043743A1
公开(公告)日：2023-02-09
申请号：US17969890
申请日：2022-10-20
Applicant: Cisco Technology, Inc.
Inventor： Peter Psenak , Robert Hanzl , Clarence Filsfils , Ketan Jivan Talaulikar
Abstract: Various systems and methods for using strict path forwarding. For example, one method involves receiving an advertisement at a node. The advertisement includes a segment identifier (SID). In response to receiving the advertisement, the node determines whether the SID is a strict SID or not. If the SID is a strict SID, the node generates information, such as forwarding information that indicates how to forward packets along a strict shortest path corresponding to the strict SID.
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公开(公告)号：US20230026874A1
公开(公告)日：2023-01-26
申请号：US17937961
申请日：2022-10-04
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Pablo Camarillo Garvia , Hendrikus G.P. Bosch , Clarence Filsfils
Abstract: In one embodiment, a segment routing and tunnel exchange provides packet forwarding efficiencies in a network, including providing an exchange between a segment routing domain and a packet tunnel domain. One application includes the segment routing and tunnel exchange interfacing segment routing packet forwarding (e.g., in a Evolved Packet Core (EPC) and/or 5-G user plane) and packet tunnel forwarding in access networks (e.g., replacing a portion of a tunnel between an access node and a user plane function for accessing a corresponding data network). In one embodiment, a network provides mobility services using a segment routing data plane that spans segment routing and tunnel exchange(s) and segment routing-enabled user plane functions. One embodiment uses the segment routing data plane without any modification to a (radio) access network (R)AN (e.g., Evolved NodeB, Next Generation NodeB) nor to user equipment (e.g., any end user device).
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公开(公告)号：US20220394109A1
公开(公告)日：2022-12-08
申请号：US17820000
申请日：2022-08-16
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , Francois Clad , Pablo Camarillo Garvia , Siva Sivabalan , Syed Kamran Raza
Abstract: In one embodiment, a method includes identifying, by a network component, a first segment identifier (SID) within a SID list. The first SID includes a first SID block and a first micro SID (uSID). The method also includes initializing, by the network component, a packing list of a uSID carrier with the first uSID of the first SID and initializing, by the network component, a packing block of the uSID carrier with the first SID block of the first SID. The method further includes initializing, by the network component, a remaining packing capacity of the packing list with a carrier capacity of the first SID and initializing, by the network component, an empty compressed SID list.
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公开(公告)号：US11463561B2
公开(公告)日：2022-10-04
申请号：US16948369
申请日：2020-09-15
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , Francois Clad , Pablo Camarillo Garvia , David Delano Ward
IPC: H04L12/741 , H04L12/46 , H04L69/22 , H04L69/324 , H04L45/00 , H04L67/10 , H04L45/02 , H04L45/50 , H04L61/5007 , H04L67/63 , H04L45/74 , H04L49/35 , H04L45/741 , H04L61/2503 , H04L101/659 , H04L43/028 , H04L9/40 , H04L45/745
Abstract: In one embodiment, new Segment Routing capabilities are used in the steering of packets through Segment Routing nodes in a network. A Segment List includes a set of one or more Segment List (SL) Groups, each of which identifies one or more Segments contiguously or non-contiguously stored in the Segment List (or stored across multiple Segment Lists) of a Segment Routing packet. Each SL Group typically includes one Segment that is encoded as a Segment Identifier, and may include Segments that are Extended Values. The steering order of SL Groups is not required to be the same order as they are listed in the Segment List, as the value of Segments Left may be increased, remain the same, or decreased (possibly to skip a next SL Group) and possibly based on the result of an evaluation of a conditional expression.
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Patent Agency Ranking
公开(公告)号：US11411948B2
公开(公告)日：2022-08-09
申请号：US16574771
申请日：2019-09-18
Applicant: Cisco Technology Inc.
IPC: H04L9/40
Abstract: In one embodiment, an apparatus of a LISP environment includes one or more processors and computer-readable non-transitory storage media coupled to the one or more processors. The computer-readable non-transitory storage media include instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including receiving an attestation token from a first component of the LISP environment. The operations also include encoding the attestation token using a LISP message format. The operations further include distributing the encoded attestation token with a LISP signaling message to a third component of the LISP environment.
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217.发明申请公开(公告)号：US20220232112A1
公开(公告)日：2022-07-21
申请号：US17713944
申请日：2022-04-05
Applicant: Cisco Technology, Inc.
Inventor： Ahmed Refaat Bashandy , Jisu Bhattacharya , Syed Kamran Raza , Clarence Filsfils
IPC: H04L69/22 , H04L69/324 , H04L45/00 , H04L67/10 , H04L45/50 , H04L12/46 , H04L45/74 , H04L61/5007 , H04L49/35 , H04L67/63 , H04L45/741
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.
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公开(公告)号：US20220191134A1
公开(公告)日：2022-06-16
申请号：US17685986
申请日：2022-03-03
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , Peter Psenak , Francois Clad , Jose Antonio Liste
Abstract: Various implementations disclosed herein enable malleable routing for data packets. For example, in various implementations, a method of routing a type of data packets is performed by a device. In some implementations, the device includes a non-transitory memory and one or more processors coupled with the non-transitory memory. In some implementations, the method includes determining a routing criterion to transmit a set of data packets across a network. In some implementations, the method includes identifying network nodes and communication links in the network that satisfy the routing criterion. In some implementations, the method includes determining a route for the set of data packets through the network nodes and the communication links that satisfy the routing criterion. In some implementations, the method includes configuring the network nodes that are on the route with configuration information that allows the set of data packets to propagate along the route.
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公开(公告)号：US20220191133A1
公开(公告)日：2022-06-16
申请号：US17685857
申请日：2022-03-03
Applicant: Cisco Technology, Inc.
Inventor： Clarence Filsfils , Peter Psenak , Francois Clad , Jose Antonio Liste
Abstract: Various implementations disclosed herein enable malleable routing for data packets. For example, in various implementations, a method of routing a type of data packets is performed by a device. In some implementations, the device includes a non-transitory memory and one or more processors coupled with the non-transitory memory. In some implementations, the method includes determining a routing criterion to transmit a set of data packets across a network. In some implementations, the method includes identifying network nodes and communication links in the network that satisfy the routing criterion. In some implementations, the method includes determining a route for the set of data packets through the network nodes and the communication links that satisfy the routing criterion. In some implementations, the method includes configuring the network nodes that are on the route with configuration information that allows the set of data packets to propagate along the route.
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公开(公告)号：US11323416B2
公开(公告)日：2022-05-03
申请号：US16674419
申请日：2019-11-05
Applicant: Cisco Technology, Inc.
Inventor： Peter Psenak , Paul Wells , Ketan Jivan Talaulikar , Clarence Filsfils
Abstract: In one embodiment, a method includes receiving an OSPF hello message including an attestation token from a second network apparatus, determining that the attestation token is valid for the second network apparatus at a current time, establishing an adjacency to the second network apparatus in response to the determination, computing, based at least on the attestation token, a trust level for a first link from the first network apparatus to the second network apparatus and a trust level for first prefixes associated with the first link, and sending an LSA comprising the trust level for the first link and the trust level for the first prefixes to neighboring network apparatuses, where the trust level for the first link and the trust level for the prefixes are used by the network apparatuses in the network to compute a routing table of the network.
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