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Method and system for redirecting networked traffic

  • US 9,331,933 B2
  • Filed: 11/06/2013
  • Issued: 05/03/2016
  • Est. Priority Date: 10/13/2004
  • Status: Active Grant
First Claim
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1. A method of redirecting network traffic from an uncontrolled access network to a controlled access network, the method comprising:

  • receiving, from a first network element, a plurality of Internet Protocol (IP) packets initially routed to an intended destination address on a first destination network element on the uncontrolled access network;

    re-writing IP packet header information of at least one IP packet based on a service class of the first network element to redirect the at least one IP packet to a destination address differing from the intended destination address;

    encapsulating, at a first intermediate network device, the at least one IP packet with rewritten IP packet header information;

    receiving, at a second intermediate network device, the at least one encapsulated IP packet having rewritten IP packet service class header information;

    performing, based on the rewritten IP packet service class header information and on a route map directive, IP address matching by comparing the rewritten IP packet service class header information to an access control list; and

    if the rewritten IP packet header information matches an item from the access control list, redirecting the at least one IP packet through an interface tunnel specified in a route map directive to a redirected destination address of a second destination network element, different from the first destination network element, on the controlled access network.

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