公开(公告)号：US20230246967A1

公开(公告)日：2023-08-03

申请号：US18297599

申请日：2023-04-07

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Neale David Raymond Ranns ,  David Delano Ward ,  David Richard Barach

IPC: H04L47/125 ,  H04L47/70 ,  H04L47/17 ,  H04L45/50

CPC classification number: H04L47/125 ,  H04L47/825 ,  H04L47/17 ,  H04L45/507

Abstract: In one embodiment, an offload platform is an compute platform, adjunct to a router or other packet switching device, that performs packet processing operations including determining an egress forwarding value corresponding to the next-hop node of the packet switching device to which to send an offload-platform processed packet. The offload platform downloads forwarding information from the router, and augments it, such as, but not limited to, representing interfaces of the router as identifiable virtual interface(s) on the offload platform, and including each of one or more next-hop nodes of the router represented as an identifiable virtual adjacency and identifiable tunnel (e.g., identified by the egress forwarding value). In one embodiment, the egress forwarding value is an Multiprotocol Label Switching (MPLS) label or Segment Routing Identifier. The router identifies packets of certain packet flows to send to the adjunct offload platform, rather than processing per its routing information base.

公开(公告)号：US10103981B2

公开(公告)日：2018-10-16

申请号：US14929350

申请日：2015-11-01

Applicant: Cisco Technology, Inc.

Inventor： Carlos M Pignataro ,  Nagendra Kumar Nainar ,  Neale David Raymond Ranns

IPC: H04L1/00 ,  H04L12/721 ,  H04L29/08 ,  H04L12/707 ,  H04L12/26 ,  H04L12/24

Abstract: In one embodiment, a method, system, and apparatus is for storing an assigned operations, administration and management (OAM) bitstring in a memory in a BIER (Bit Index Explicit Replication) enabled router, the OAM bitstring being assigned to a BIER domain, the semantic of the OAM bitstring being to replicate and forward the OAM bitstring to neighboring bit-forwarding routers (BFRs), generating an OAM probe packet including the OAM bitstring, setting a BFR ID associated with a first BFR as a BIER header bitstring in the OAM probe packet, setting a TTL (time to live) field in the OAM probe packet to be 2, sending the OAM probe packet to a next hop BFR, and performing one of receiving the OAM probe packet back from the first BFR, and taking an alternative action if the OAM probe packet is not received back from the first BFR.

公开(公告)号：US11924108B2

公开(公告)日：2024-03-05

申请号：US18360342

申请日：2023-07-27

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Neale David Raymond Ranns ,  David Delano Ward ,  David Richard Barach

IPC: H04L12/26 ,  H04L45/50 ,  H04L47/125 ,  H04L47/17 ,  H04L47/70

CPC classification number: H04L47/125 ,  H04L45/507 ,  H04L47/17 ,  H04L47/825

Abstract: In one embodiment, an offload platform is an compute platform, adjunct to a router or other packet switching device, that performs packet processing operations including determining an egress forwarding value corresponding to the next-hop node of the packet switching device to which to send an offload-platform processed packet. The offload platform downloads forwarding information from the router, and augments it, such as, but not limited to, representing interfaces of the router as identifiable virtual interface(s) on the offload platform, and including each of one or more next-hop nodes of the router represented as an identifiable virtual adjacency and identifiable tunnel (e.g., identified by the egress forwarding value). In one embodiment, the egress forwarding value is an Multiprotocol Label Switching (MPLS) label or Segment Routing Identifier. The router identifies packets of certain packet flows to send to the adjunct offload platform, rather than processing per its routing information base.

公开(公告)号：US20230370382A1

公开(公告)日：2023-11-16

申请号：US18360342

申请日：2023-07-27

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Neale David Raymond Ranns ,  David Delano Ward ,  David Richard Barach

IPC: H04L47/125 ,  H04L45/50 ,  H04L47/17 ,  H04L47/70

CPC classification number: H04L47/125 ,  H04L45/507 ,  H04L47/17 ,  H04L47/825

Abstract: In one embodiment, an offload platform is an compute platform, adjunct to a router or other packet switching device, that performs packet processing operations including determining an egress forwarding value corresponding to the next-hop node of the packet switching device to which to send an offload-platform processed packet. The offload platform downloads forwarding information from the router, and augments it, such as, but not limited to, representing interfaces of the router as identifiable virtual interface(s) on the offload platform, and including each of one or more next-hop nodes of the router represented as an identifiable virtual adjacency and identifiable tunnel (e.g., identified by the egress forwarding value). In one embodiment, the egress forwarding value is an Multiprotocol Label Switching (MPLS) label or Segment Routing Identifier. The router identifies packets of certain packet flows to send to the adjunct offload platform, rather than processing per its routing information base.

公开(公告)号：US20220368636A1

公开(公告)日：2022-11-17

申请号：US17814803

申请日：2022-07-25

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Neale David Raymond Ranns ,  David Delano Ward ,  David Richard Barach

IPC: H04L47/125 ,  H04L47/70 ,  H04L47/17 ,  H04L45/50

Abstract: In one embodiment, an offload platform is an compute platform, adjunct to a router or other packet switching device, that performs packet processing operations including determining an egress forwarding value corresponding to the next-hop node of the packet switching device to which to send an offload-platform processed packet. The offload platform downloads forwarding information from the router, and augments it, such as, but not limited to, representing interfaces of the router as identifiable virtual interface(s) on the offload platform, and including each of one or more next-hop nodes of the router represented as an identifiable virtual adjacency and identifiable tunnel (e.g., identified by the egress forwarding value). In one embodiment, the egress forwarding value is an Multiprotocol Label Switching (MPLS) label or Segment Routing Identifier. The router identifies packets of certain packet flows to send to the adjunct offload platform, rather than processing per its routing information base.

公开(公告)号：US11627086B2

公开(公告)日：2023-04-11

申请号：US17814803

申请日：2022-07-25

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Neale David Raymond Ranns ,  David Delano Ward ,  David Richard Barach

IPC: H04L12/26 ,  H04L47/125 ,  H04L47/70 ,  H04L47/17 ,  H04L45/50

Abstract: In one embodiment, an offload platform is an compute platform, adjunct to a router or other packet switching device, that performs packet processing operations including determining an egress forwarding value corresponding to the next-hop node of the packet switching device to which to send an offload-platform processed packet. The offload platform downloads forwarding information from the router, and augments it, such as, but not limited to, representing interfaces of the router as identifiable virtual interface(s) on the offload platform, and including each of one or more next-hop nodes of the router represented as an identifiable virtual adjacency and identifiable tunnel (e.g., identified by the egress forwarding value). In one embodiment, the egress forwarding value is an Multiprotocol Label Switching (MPLS) label or Segment Routing Identifier. The router identifies packets of certain packet flows to send to the adjunct offload platform, rather than processing per its routing information base.