MANAGEMENT SERVER AND METHOD OF CONTROLLING PACKET TRANSFER

• US 20160127232A1
• Filed: 09/28/2015
• Published: 05/05/2016
• Est. Priority Date: 10/31/2014
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: KANO, Shinya
• Application Number:
  US14/868,173
• Publication Number:
  US 20160127232A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 45/74 Address processing for routing
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A computer detects a key server located on a path through which a packet transmitted from a terminal is transferred. The key server is one of network servers located on the path. The key server satisfies a predetermined condition. Each of the network servers is configured to receive the packet and change a destination address set in the packet. The computer detects the key server located on a first path. The computer detects the key server located on a second path upon the first path being modified to obtain the second path. The computer assigns, if the key server located on the second path is different from the key server located on the first path, a first address to the key server located on the second path. The first address has been assigned to the key server located on the first path.

Claims

1. A method of controlling packet transfer, the method comprising:

detecting, by a computer, a key server located on a path through which a packet transmitted from a terminal is transferred, the key server being one of network servers located on the path, the key server satisfying a predetermined condition, each of the network servers being configured to receive the packet and change a destination address set in the packet;

detecting the key server located on a first path;

detecting the key server located on a second path upon the first path being modified to obtain the second path; and

assigning, if the key server located on the second path is different from the key server located on the first path, a first address to the key server located on the second path, the first address being assigned to the key server located on the first path.

2. The method according to claim 1, wherein

the first path is modified to obtain the second path by removing the key server located on the first path.

3. The method according to claim 1, wherein

the predetermined condition is that none of the network servers other than the key server exists between the terminal and the key server.

4. The method according to claim 1, wherein

If the computer detects more than one key server located on the second path, the computer assigns the first address to each of the more than one key server, and the computer notifies a relay device of a setting to transfer a packet received from the terminal to each of the more than one key server.

5. The method according to claim 1, wherein

the first path is modified to obtain the second path by adding the key server located on the second path.

6. The method according to claim 1, wherein

at least one of the key server located on the first path and the key server located on the second path is set by network functions virtualization.

7. A management server, comprising:

a processor configured to

detect a key server located on a path through which a packet transmitted from a terminal is transferred, the key server being one of network servers located on the path, the key server satisfying a predetermined condition, each of the network servers being configured to receive the packet and change a destination address set in the packet;

detect the key server located on a first path;

detect the key server located on a second path upon the first path being modified to obtain the second path; and

assign, if the key server located on the second path is different from the key server located on the first path, a first address to the key server located on the second path, the first address being assigned to the key server located on the first path.

8. The management server according to claim 7, wherein

the first path is modified to obtain the second path by removing the key server located on the first path.

9. The management server according to claim 7, wherein

the predetermined condition is that none of the network servers other than the key server exists between the terminal and the key server.

10. The management server according to claim 7, wherein

the processor is configured to

assign, upon detecting more than one key server located on the second path, the first address to each of the more than one key server;

and

notify a relay device of a setting to transfer a packet received from the terminal to each of the more than one key server.

11. The management server according to claim 7, wherein

the first path is modified to obtain the second path by adding the key server located on the second path.

12. The management server according to claim 7, wherein

the processor is configured to

set at least one of the key server located on the first path and the key server located on the second path by network functions virtualization.

13. A computer-readable recording medium having stored therein a program that causes a computer to execute a process, the process comprising:

detecting a key server located on a path through which a packet transmitted from a terminal is transferred, the key server being one of network servers located on the path, the key server satisfying a predetermined condition, each of the network servers being configured to receive the packet and change a destination address set in the packet;

detecting the key server located on a first path;

detecting the key server located on a second path upon the first path being modified to obtain the second path; and

assigning, if the key server located on the second path is different from the key server located on the first path, a first address to the key server located on the second path, the first address being assigned to the key server located on the first path.

14. The computer-readable recording medium according to claim 13, wherein

the first path is modified to obtain the second path by removing the key server located on the first path.

15. The computer-readable recording medium according to claim 13, wherein

the predetermined condition is that none of the network servers other than the key server exists between the terminal and the key server.

16. The computer-readable recording medium according to claim 13, wherein

If the computer detects more than one key server located on the second path, the computer assigns the first address to each of the more than one key server, and the computer notifies a relay device of a setting to transfer a packet received from the terminal to each of the more than one key server.

17. The computer-readable recording medium according to claim 13, wherein

the first path is modified to obtain the second path by adding the key server located on the second path.

18. The computer-readable recording medium according to claim 13, wherein

at least one of the key server located on the first path and the key server located on the second path is set by network functions virtualization.