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:
Jul. 03, 2018
Filed:
Sep. 29, 2016
Cisco Technology, Inc., San Jose, CA (US);
Jakob Heitz, Santa Clara, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In one embodiment a system, method, and related apparatus are described for a router which receives notice of a route including a hijacked prefix having a hijacked prefix netmask length, searches a set of routes with equal or shorter netmask lengths that cover the hijacked prefix in order to find at least one route which has no autonomous system (AS) in common with the particular route comprising the hijacked prefix, if a specific route is found with a netmask length equal to or shorter than the hijacked prefix netmask length, then the specific route which has been found is a determined alternative route, extracts the particular route comprising the hijacked prefix from the specific route if said specific route has a netmask length covering a larger address range than the hijacked prefix netmask length, inserts the determined alternative route in a routing table, and modifies attributes of the determined alternative route in the routing table according to the determined alternative route. Related systems, methods, and apparatus are also described.