公开(公告)号：US20190020626A1

公开(公告)日：2019-01-17

申请号：US15650913

申请日：2017-07-16

Applicant: Cisco Technology, Inc.

Inventor： Kabiraj SETHI ,  Shivangi SHARMA ,  Peter G. JONES ,  Jimit MAHETA

IPC: H04L29/06 ,  H04L12/753

CPC classification number: H04L63/0236 ,  H04L12/4641 ,  H04L41/02 ,  H04L43/10 ,  H04L45/48 ,  H04L49/15 ,  H04L49/604 ,  H04L69/03

Abstract: In one embodiment, a system, apparatus, and method are described for providing limited data connectivity for devices connected to a switch when the switch enters bootloader mode. The switch has a central processing unit (CPU), the CPU comprising a reload handler and an application-specific integrated circuit (ASIC), the ASIC comprising ASIC forwarding logic. The ASIC is instructed, by the reload handler, to store an ASIC database, the ASIC database for storing the ASIC forwarding logic. The reload handler maintains a physical layer (PHY) state of the switch. Use of spanning tree protocol (STP) and Transmission Control Protocol (TCP) keepalive is disabled in the switch. A state of stack hardware is retained in switch memory. New ports of the switch are prevented from becoming active, and the ASIC forwarding logic is, in response to receiving the instruction, stored in the ASIC database. Related systems, apparatuses, and methods are also described.

公开(公告)号：US20240356827A1

公开(公告)日：2024-10-24

申请号：US18302511

申请日：2023-04-18

Applicant: Cisco Technology, Inc.

Inventor： Peter G. JONES

IPC: H04L43/0888 ,  H04L43/022

CPC classification number: H04L43/0888 ,  H04L43/022

Abstract: Energy savings through adjustment of link speed may be provided. A utilization of a port may be monitored. The port may be configured to run at a plurality of speeds. Based on monitoring the utilization of the port, it may be determined that the utilization of the port has dropped, for a first predetermined time period, below a supported speed lower than a current port speed. Energy consumed by the port may be lowered, in response to determining that the utilization of the port has dropped, for the first predetermined time period, below a supported speed lower than the current port speed. Lowering the energy consumed by the port may comprise re-configuring the port to run at a second speed comprising a supported speed below the current speed. When the utilization of the port exceeds a predefined threshold over a second predetermined time period, the port speed may be increased.