Patent ID: 9503418
Filing Date: 2016-11-22
CPC Classification: H04L

Claim Text:
1. A method for obtaining a remote Internet Protocol (IP) address, comprising: receiving, by a first client, a first detection IP packet from a remote server through a Point to Point Protocol (PPP) interface with an access router, wherein the remote server obtains routing information of the first client in advance and the first detection IP packet comprises a first IP address allocated by the remote server for the first client using a Remote Host Configuration Protocol (RHCP), wherein the remote server is a RHCP server and the first client is a RHCP client having a lower-level client cascaded to the first client through an Ethernet connection, wherein the first detection IP packet is forwarded by the access router to the first client using a pre-configured routing table that maps a corresponding relation between a temporary maintenance IP address and a client ID or an IP address of the PPP interface, and the first IP address included in the routing information allocated by the remote server is the temporary maintenance IP address that enables the remote server to stop subsequent transmission of the first detection IP packet for the first client through at least the steps of: