Patent ID: 9479353
Filing Date: 2016-10-25
CPC Classification: H04L

Claim Text:
1. A method comprising: initially establishing Internet Protocol connectivity between a cable modem and a cable modem termination system through execution of a plurality of connectivity steps; when Internet Protocol connectivity between the cable modem and the cable modem termination system is lost, evaluating, at the cable modem, information received by the cable modem during the initial establishment of Internet Protocol connectivity to determine whether any of the received information may be used for future operations; determining, at the cable modem based on the evaluating, to reuse an Internet Protocol address obtained when initially establishing the Internet Protocol connectivity and to skip a connectivity step of acquisition of the Internet Protocol address; determining selected one or more of the plurality of connectivity steps other than acquisition of the Internet Protocol address for use in reestablishing Internet Protocol connectivity of the cable modem; sending a message from the cable modem to the cable modem termination system, wherein the message is encoded to indicate that the connectivity step of acquisition of the Internet Protocol address is to be skipped and to identify the selected one or more connectivity steps other than acquisition of the Internet Protocol address determined by the cable modem for use in reestablishing Internet Protocol connectivity; receiving, from the cable modem termination system, a message indicating whether the connectivity step of acquisition of the Internet Protocol address may be skipped and that the selected one or more connectivity steps other than acquisition of the Internet Protocol address may be used in reestablishing Internet Protocol connectivity; and reestablishing Internet Protocol connectivity between the cable modem and the cable modem termination system using the Internet Protocol address obtained when initially establishing the Internet Protocol connectivity and the selected one or more connectivity steps other than acquisition of the Internet Protocol address.