The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2018
Filed:
Mar. 22, 2016
Cisco Technology, Inc., San Jose, CA (US);
Kuralvanan Arangasamy, San Jose, CA (US);
Brian Eliot Weis, San Jose, CA (US);
Rakesh Chopra, Menlo Park, CA (US);
Hugo J. W. Vliegen, Menlo Park, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In an egress processing method, an egress frame is received. The egress frame includes an outer Ethernet frame, an Internet Protocol (IP) header, a layer 3 (L3) encapsulation identifying a layer 2 (L2)-over-L3 tunnel protocol, and an inner Ethernet frame with a payload. The outer Ethernet frame, the IP header, and the inner Ethernet frame, and the L3 encapsulation are parsed. Based on results of the parsing, a media access control security (MACsec) policy that defines how to protect the inner Ethernet frame is determined, and the inner Ethernet frame is protected according to the MACsec policy, while leaving unprotected the outer Ethernet frame, the IP header, and the L3 encapsulation, to produce a partly protected output egress frame. The partly protected output egress frame is transmitted to the peer network device over a public wide area network.