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:
Dec. 19, 2006
Filed:
Jan. 18, 2002
Mark Stapp, Belmont, MA (US);
Kenneth Kinnear, Jr., Boxborough, MA (US);
Richard A. Johnson, Santa Barbara, CA (US);
Jayadev Kumarasamy, Morgan Hill, CA (US);
Mark Stapp, Belmont, MA (US);
Kenneth Kinnear, Jr., Boxborough, MA (US);
Richard A. Johnson, Santa Barbara, CA (US);
Jayadev Kumarasamy, Morgan Hill, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Techniques for managing leased network addresses for multiple networks using overlapping address spaces include storing banks of addresses corresponding to the multiple networks. A request for a network address for a host on a first network is received from a relay agent on an intermediate device. The request includes a qualifier associated with the first network by the relay agent. A first bank of addresses is selected based on the qualifier. A first network address from the first bank is identified based at least in part on the request. A response for the host is sent to the relay agent. The response indicates the first network address and the qualifier. Thus a dynamic host configuration protocol (DHCP) server can provide the same network address for several hosts spread over different networks, such as different virtual private networks (VPNs).