| US 7,539,216 B2 | ||
| Method and system of determining last hop device addresses | ||
| Kevin C. Johns, Erie, Colo. (US); Eric S. Rosenfeld, Superior, Colo. (US); and Jean-François Mulé, Grasse (France) | ||
| Assigned to Cable Television Laboratories, Inc., Louisville, Colo. (US) | ||
| Filed on Nov. 16, 2005, as Appl. No. 11/280,421. | ||
| Prior Publication US 2007/0110050 A1, May 17, 2007 | ||
| Int. Cl. H04J 3/24 (2006.01) | ||
| U.S. Cl. 370—475 [709/203; 709/224; 709/245] | 20 Claims |
| 1. A method of determining a last hop device address associated with a last hop device used to communicate signals with one
or more client devices, the client devices having client device addresses for facilitating communications therewith, the method
comprising:
issuing an address request to at least one of the client device addresses, the address request including instructions for
the last hop device associated therewith to reply with the associated last hop address and client device address mask, the
client device address mask for use in indicating a range of client device addresses associated therewith;
determining a number of client device addresses associated with the last hop device as a function of the corresponding last
hop device address and the range of client device addresses specified with the client device address mask;
determining client device addresses associated with another last hop device based on another address request;
storing the client device addresses associated with each last hop device in a database; and
configuring the database as a lookup table to facilitate cross-referencing the client device addresses with the associated
last hop device address and corresponding client device address mask.
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