US 2011/0087762 A1 · Method and system of smart detection and recovery

Abstract

A smart detection and recovery method is implemented in a terminal for detecting statuses of a host. The method comprises steps of: receiving a datagram; determining if the datagram complies with a predetermined format? If “YES” then proceed; determining if a MAC address contained in the datagram is the same with a currently used MAC address pre-stored in the terminal? If “YES” then proceed; determining if an IP address contained in the datagram is the same with a currently used IP address pre-stored in the terminal? If “NO” then re-connect or guide the terminal to the IP address contained in the datagram, if “YES” then handle the datagram by normal operations. Therefore, changes of the IP address of the host can be detected as early as possible, such that the terminal can be re-connected or guided to the host and services of the host can recovered as soon as possible.

Claims20

Dependent claims

A method of smart detection and recovery, being implemented in a terminal to detect a status of a host, wherein the terminal retrieves from the host in advance an IP address currently used and an MAC address currently used by the host, the method comprising the following steps executed by the terminal:

(A) receiving a datagram;
(B) determining whether a size of the datagram is consistent with a predetermined size, and if yes, then executing step (C), and otherwise, executing step (G);
(C) determining whether an MAC header included in the datagram complies with a predetermined format, and if yes, then executing step (D), and otherwise, executing step (G);
(D) determining whether an IP address included in the datagram is identical to the IP address currently used, and if no, then executing step (E), and otherwise, executing step (F);
(E) executing an address altering procedure in which the IP address included in the datagram is used as a new address and reconnection or redirection to the new address is made;
(F) processing the received datagram through a normal procedure and returning to the step (A);
and
(G) omitting the datagram and returning to the step (A).

5 more elements

A system of smart detection and recovery, being implemented in a terminal, comprising:

a transmission interface, being configured to connect with an external host and transmit data;
a device circuit, being configured to perform various operations and functions of the terminal;
a registration module, being configured to send a connection establishment request to the host via the transmission interface, and retrieve an IP address currently used by the host and an MAC address currently used by the host;
a memory, being configured to store at least the IP address currently used and the MAC address currently used;
a data processing module, being configured to receive at least one datagram from the outside via the transmission interface and interpret data included in the datagram;
and
an analysis module, being configured to analyze data of the datagram, which has been interpreted by the data processing module, against the IP address currently used and the MAC address currently used, and decide whether the registration module shall send the connection establishment request again to the host according to the analysis result;
wherein, the analysis module analyzes data of the datagram by the following steps:
(A) receiving the datagram;
(B) determining whether a size of the datagram is consistent with a predetermined size, and if yes, then executing step (C), and otherwise, executing step (G);
(C) determining whether a MAC header included in the datagram complies with a predetermined format, and if yes, then executing step (D), and otherwise, executing step (G);
(D) determining whether an IP address included in the datagram is identical to the IP address currently used, and if no, then executing step (E), and otherwise, executing step (F);
(E) executing an address altering procedure in which the IP address included in the datagram is used as a new address and reconnection or redirection to the new address is made;
(F) processing the received datagram through a normal procedure and returning to the step (A);
and
(G) omitting the datagram and returning to the step (A).

13 more elements

(a) receiving a datagram which at least contains the following information:
datagram format information, MAC address information and IP address information;
(b) determining whether the datagram format information complies with a predetermined datagram format, and if yes, then executing step (c), and otherwise, executing step (g);
(c) determining whether the MAC address information included in the datagram is identical to the MAC address currently used, and if yes, then executing step (d), and otherwise, executing step (g);
(d) determining whether the IP address included in the datagram is identical to the IP address currently used, and if yes, then executing step (e), and otherwise, executing step (f);
(e) executing an address altering procedure in which the IP address included in the datagram is used as a new address and reconnection or redirection to the new address is made;
(f) processing the received datagram through a normal procedure and returning to the step (a);
and
(g) omitting the datagram and returning to the step (a).

6 more elements

Dependencies are inferred from the claim text.

Method and system of smart detection and recovery

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Method and system of smart detection and recovery

Life of this patent

Abstract

Claims20