公开(公告)号：US20200007438A1

公开(公告)日：2020-01-02

申请号：US16558367

申请日：2019-09-03

Applicant: Cisco Technology, Inc.

Inventor： Prashanth Patil ,  K Tirumaleswar Reddy ,  Steven Richard Stites ,  James N. Guichard

IPC: H04L12/725 ,  H04L12/46

Abstract: A network node in a service function chain system receives a peer detection packet from a service function device in a service function path. The peer detection packet includes an inner packet with a header, such as a network service header. The network node detects a status indicator in the header that indicates a degradation in performing a service function at the service function device. The network node adjusts the service function path to compensate for the degradation in performing the service function at the service function device.

公开(公告)号：US20180337920A1

公开(公告)日：2018-11-22

申请号：US15597332

申请日：2017-05-17

Applicant: Cisco Technology, Inc.

Inventor： Steven Richard Stites ,  Morteza Ansari ,  Syam Sundar V Appala ,  Prashanth Patil

IPC: H04L29/06 ,  G06F21/62 ,  G06F21/60

Abstract: A device obtains access to an application resource from a remote application server based on an authenticated device identifier. The device sends a request to access the application resource provided by the remote application server. The device receives a first message from the remote application server directing the device to send an authentication message to a device identity server. The authentication message requests an authenticated device identity for the device. The device attaches metadata associated with the device to the authentication message and sends the authentication message with the attached metadata to the device identity server. The device receives the authenticated device identity from the device identity server and sends the authenticated device identity to the remote application. The device obtains access to the application resource from the remote application server based on the authenticated device identity.

公开(公告)号：US11343178B2

公开(公告)日：2022-05-24

申请号：US16558367

申请日：2019-09-03

Applicant: Cisco Technology, Inc.

Inventor： Prashanth Patil ,  K Tirumaleswar Reddy ,  Steven Richard Stites ,  James N. Guichard

IPC: H04L45/64 ,  H04L45/302 ,  H04L12/46 ,  H04L47/31 ,  H04L47/11

Abstract: A network node in a service function chain system receives a peer detection packet from a service function device in a service function path. The peer detection packet includes an inner packet with a header, such as a network service header. The network node detects a status indicator in the header that indicates a degradation in performing a service function at the service function device. The network node adjusts the service function path to compensate for the degradation in performing the service function at the service function device.

公开(公告)号：US10540507B2

公开(公告)日：2020-01-21

申请号：US15597332

申请日：2017-05-17

Applicant: Cisco Technology, Inc.

Inventor： Steven Richard Stites ,  Morteza Ansari ,  Syam Sundar V Appala ,  Prashanth Patil

IPC: G06F21/60 ,  G06F16/90

Abstract: A device obtains access to an application resource from a remote application server based on an authenticated device identifier. The device sends a request to access the application resource provided by the remote application server. The device receives a first message from the remote application server directing the device to send an authentication message to a device identity server. The authentication message requests an authenticated device identity for the device. The device attaches metadata associated with the device to the authentication message and sends the authentication message with the attached metadata to the device identity server. The device receives the authenticated device identity from the device identity server and sends the authenticated device identity to the remote application. The device obtains access to the application resource from the remote application server based on the authenticated device identity.

公开(公告)号：US20170257310A1

公开(公告)日：2017-09-07

申请号：US15058259

申请日：2016-03-02

Applicant: Cisco Technology, Inc.

Inventor： Prashanth Patil ,  K Tirumaleswar Reddy ,  Steven Richard Stites ,  James N. Guichard

IPC: H04L12/725 ,  H04L12/46 ,  H04L29/08

CPC classification number: H04L45/306 ,  H04L12/4633 ,  H04L45/64 ,  H04L47/115 ,  H04L47/31

Abstract: At a service function node configured to perform at least one service function on a data flow that follows a service function path, degradation in performing the service function is detected. The service function node generates a status indicator for the degradation in performing the service function and inserts the status indicator into a peer detection packet. The peer detection packet encapsulates an inner packet with a header that indicates the service function path. The service function node forwards the peer detection packet to a neighboring service function node along the service function path.