公开(公告)号：US10652144B2

公开(公告)日：2020-05-12

申请号：US15866176

申请日：2018-01-09

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：US10892987B2

公开(公告)日：2021-01-12

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：US20180375763A1

公开(公告)日：2018-12-27

申请号：US15783753

申请日：2017-10-13

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Clarence Filsfils ,  Darren Dukes ,  Gaurav Dawra ,  Francois Clad ,  Pablo Camarillo Garvia

IPC: H04L12/741 ,  H04L12/46

Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes a locator of a particular router and a function encoding representing a particular EVPN end function of the particular router, with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet. In one embodiment, the particular packet includes a Segment Routing Header (SRH) including the particular SID as the currently active SID.

公开(公告)号：US20240098161A1

公开(公告)日：2024-03-21

申请号：US18360783

申请日：2023-07-27

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Clarence Filsfils ,  Darren Dukes ,  Gaurav Dawra ,  Francois Clad ,  Pablo Camarillo Garvia

IPC: H04L69/22 ,  H04L12/46 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50 ,  H04L45/74 ,  H04L45/741 ,  H04L49/35 ,  H04L61/5007 ,  H04L67/10 ,  H04L67/63 ,  H04L69/324

CPC classification number: H04L69/22 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/14 ,  H04L45/34 ,  H04L45/50 ,  H04L45/74 ,  H04L45/741 ,  H04L49/35 ,  H04L61/5007 ,  H04L67/10 ,  H04L67/63 ,  H04L69/324 ,  H04L61/2503

Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.

公开(公告)号：US20190215267A1

公开(公告)日：2019-07-11

申请号：US15866176

申请日：2018-01-09

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

CPC classification number: H04L45/566 ,  H04L45/021 ,  H04L45/34 ,  H04L45/741 ,  H04L45/745

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：US11652913B2

公开(公告)日：2023-05-16

申请号：US17836069

申请日：2022-06-09

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Clarence Filsfils ,  Darren Dukes ,  Gaurav Dawra ,  Francois Clad ,  Pablo Camarillo Garvia

IPC: H04L69/22 ,  H04L69/324 ,  H04L45/00 ,  H04L67/10 ,  H04L45/02 ,  H04L45/50 ,  H04L61/5007 ,  H04L67/63 ,  H04L12/46 ,  H04L45/74 ,  H04L49/35 ,  H04L45/741 ,  H04L61/2503 ,  H04L101/659 ,  H04L101/00 ,  H04L43/028 ,  H04L9/40 ,  H04L45/745

CPC classification number: H04L69/22 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/14 ,  H04L45/34 ,  H04L45/50 ,  H04L45/74 ,  H04L45/741 ,  H04L49/35 ,  H04L61/5007 ,  H04L67/10 ,  H04L67/63 ,  H04L69/324 ,  H04L43/028 ,  H04L45/745 ,  H04L61/2503 ,  H04L63/0272 ,  H04L2101/00 ,  H04L2101/659 ,  H04L2212/00

Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.

公开(公告)号：US20220166860A1

公开(公告)日：2022-05-26

申请号：US17671188

申请日：2022-02-14

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Clarence Filsfils ,  Darren Dukes ,  Gaurav Dawra ,  Francois Clad ,  Pablo Camarillo Garvia

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, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.

公开(公告)号：US12255976B2

公开(公告)日：2025-03-18

申请号：US18360783

申请日：2023-07-27

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Clarence Filsfils ,  Darren Dukes ,  Gaurav Dawra ,  Francois Clad ,  Pablo Camarillo Garvia

IPC: H04L69/22 ,  H04L12/46 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50 ,  H04L45/74 ,  H04L45/741 ,  H04L49/35 ,  H04L61/5007 ,  H04L67/10 ,  H04L67/63 ,  H04L69/324 ,  H04L9/40 ,  H04L43/028 ,  H04L45/745 ,  H04L61/2503 ,  H04L101/00 ,  H04L101/659

Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.

公开(公告)号：US11838396B2

公开(公告)日：2023-12-05

申请号：US17671188

申请日：2022-02-14

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Clarence Filsfils ,  Darren Dukes ,  Gaurav Dawra ,  Francois Clad ,  Pablo Camarillo Garvia

IPC: H04L69/22 ,  H04L69/324 ,  H04L45/00 ,  H04L67/10 ,  H04L45/02 ,  H04L45/50 ,  H04L61/5007 ,  H04L67/63 ,  H04L12/46 ,  H04L45/74 ,  H04L49/35 ,  H04L45/741 ,  H04L61/2503 ,  H04L101/659 ,  H04L101/00 ,  H04L43/028 ,  H04L9/40 ,  H04L45/745

CPC classification number: H04L69/22 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/14 ,  H04L45/34 ,  H04L45/50 ,  H04L45/74 ,  H04L45/741 ,  H04L49/35 ,  H04L61/5007 ,  H04L67/10 ,  H04L67/63 ,  H04L69/324 ,  H04L43/028 ,  H04L45/745 ,  H04L61/2503 ,  H04L63/0272 ,  H04L2101/00 ,  H04L2101/659 ,  H04L2212/00

Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.

公开(公告)号：US20220303366A1

公开(公告)日：2022-09-22

申请号：US17836069

申请日：2022-06-09

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Clarence Filsfils ,  Darren Dukes ,  Gaurav Dawra ,  Francois Clad ,  Pablo Camarillo Garvia

IPC: H04L69/22 ,  H04L69/324 ,  H04L45/00 ,  H04L67/10 ,  H04L45/02 ,  H04L45/50 ,  H04L61/5007 ,  H04L67/63 ,  H04L12/46 ,  H04L45/74 ,  H04L49/35 ,  H04L45/741

Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.