公开(公告)号：US11870762B2

公开(公告)日：2024-01-09

申请号：US17368902

申请日：2021-07-07

Applicant: Cisco Technology Inc.

Inventor： Craig Thomas Hill ,  Aaron Christopher Warner ,  Michael William Bessette ,  Chennakesava Reddy Gaddam

IPC: H04L29/06 ,  H04L9/40 ,  H04L12/46

CPC classification number: H04L63/061 ,  H04L12/462 ,  H04L63/0464 ,  H04L63/162

Abstract: The present disclosure is directed to systems and methods for transparent Provider Backbone Bridge forwarding of MACsec key exchanges over public Ethernet provider backbones. The method includes the steps of receiving, at a first PBB device, an Ethernet frame from a first edge router for transmission to a second edge router via a MACsec connection, the Ethernet frame comprising a plurality of fields; performing a lookup of one or more fields of the plurality of fields to determine a match with one or more pre-defined values; determining that the one or more fields of the Ethernet frame match the one or more pre-defined values; rewriting the one or more fields of the Ethernet frame to one or more open values operable to allow the Ethernet frame to be transmitted to a next hop device; and transmitting the Ethernet frame to the next hop device.

公开(公告)号：US20230008699A1

公开(公告)日：2023-01-12

申请号：US17368902

申请日：2021-07-07

Applicant: Cisco Technology Inc.

Inventor： Craig Thomas Hill ,  Aaron Christopher Warner ,  Michael William Bessette ,  Chennakesava Reddy Gaddam

IPC: H04L29/06 ,  H04L12/46

Abstract: The present disclosure is directed to systems and methods for transparent Provider Backbone Bridge forwarding of MACsec key exchanges over public Ethernet provider backbones. The method includes the steps of receiving, at a first PBB device, an Ethernet frame from a first edge router for transmission to a second edge router via a MACsec connection, the Ethernet frame comprising a plurality of fields; performing a lookup of one or more fields of the plurality of fields to determine a match with one or more pre-defined values; determining that the one or more fields of the Ethernet frame match the one or more pre-defined values; rewriting the one or more fields of the Ethernet frame to one or more open values operable to allow the Ethernet frame to be transmitted to a next hop device; and transmitting the Ethernet frame to the next hop device.