System and method for designating a priority access order of domain name service servers

• US 20060039352A1
• Filed: 08/19/2004
• Published: 02/23/2006
• Est. Priority Date: 08/19/2004
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Karstens, Christopher K.
• Application Number:
  US10/921,458
• Publication Number:
  US 20060039352A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 41/0853 by actively collecting configuration information or by backing up configuration information
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]

Abstract

A method and a system for designating a priority access order of one or more DNS servers. DNS servers are accessed in the designated order until an IP address is found or until there are no more DNS servers to access. The DNS servers'"'"' IP addresses may be received from a network configuration server or the IP addresses may be entered by a user. The priority access order may be designated by a user or the order may be determined by examining a history of DNS server requests and a history of DNS server responses. After a translation of a domain name into an IP address is requested, the request is sent to one or more of the DNS servers in the designated access order. Alternatively, the DNS servers may be accessed in the order the servers are listed in the computer system'"'"'s network configuration settings.

Claims

1. A computer-implemented method comprising:

sending a request to a first DNS server to translate a domain name into an IP address;

receiving a “

not found”

response from the first DNS server indicating that the domain name was not found; and

sending the request to translate the domain name to a second DNS server in response to receiving the “

not found”

response from the first DNS server.

2. The method of claim 1, wherein an IP address of the first DNS server and an IP address of the second DNS server are listed in a DNS server IP address list.

3. The method of claim 2, wherein the listing order in the DNS server IP address list indicates a priority order for sending the request to translate the domain name to the DNS servers in the list and wherein the first DNS server is listed before the second DNS server.

4. The method of claim 3, further comprising a user designating the priority order of the DNS server IP addresses in the DNS server IP address list.

5. The method of claim 4, further comprising creating a second DNS server IP address list, wherein:

the listing order in the second DNS server IP address list indicates a priority order for sending the request to translate the domain name to the DNS servers in the second list,

for a first plurality of domain names, DNS servers are accessed in the order listed in the first list, and

for a second plurality of domain names, DNS servers are accessed in the order listed in the second list.

6. The method of claim 3, further comprising determining the priority order of the addresses in the DNS server IP address list according to a history of DNS server domain name translation requests and a history of DNS server responses to the translation requests.

7. The method of claim 6, further comprising dynamically changing the priority after a translation request is sent to one of the DNS servers listed in the DNS server IP address list and a response is received from the DNS server to which the translation request was sent.

8. The method of claim 3, further comprising sending the request to translate the domain name to a plurality of DNS servers in the order the DNS servers are received from the network configuration server.

9. The method of claim 8, further comprising, subsequent to the sending of the request to translate the domain name to the DNS servers in the order the DNS servers are received from the network configuration server, sending the request to translate the domain name to the DNS servers in the order the DNS servers are listed in the DNS server IP address list.

10. An information handling system comprising:

one or more processors;

a memory accessible by the one or more processors;

a network interface connecting the information handling system through a network to one or more remote information handling systems;

a translation tool executable by the processors, the translation tool including software code adapted to;

send a request to a first DNS server to translate a domain name into an IP address;

receive a “

not found”

response from the first DNS server indicating that the domain name was not found; and

send the request to translate the domain name to a second DNS server in response to receiving the “

not found”

response from the first DNS server.

11. The information handling system of claim 10, wherein an IP address of the first DNS server and an IP address of the second DNS server are listed in a DNS server IP address list.

12. The information handling system of claim 11, wherein the listing order in the DNS server IP address list indicates a priority order for sending the request to translate the domain name to the DNS servers in the list and wherein the first DNS server is listed before the second DNS server.

13. The information handling system of claim 12, further comprising software adapted to allow a user to designate the priority order of the DNS servers'"'"' IP addresses listed in the DNS server IP address list.

14. The information handling system of claim 13, wherein the translation tool further includes software code adapted to create a second DNS server IP address list, wherein:

the listing order in the second DNS server IP address list indicates a priority order for sending the request to translate the domain name to the DNS servers in the second list,

for a first plurality of domain names, DNS servers are accessed in the order listed in the first list, and

for a second plurality of domain names, DNS servers are accessed in the order listed in the second list.

15. The information handling system of claim 12, wherein the translation tool further includes software code adapted to determine the priority order of the addresses in the DNS server IP address list according to a history of DNS server domain name translation requests and a history of DNS server responses to the translation requests.

16. The information handling system of claim 15, wherein the translation tool further includes software code adapted to dynamically change the priority after a translation request is sent to one of the DNS servers listed in the DNS server IP address list and a response is received from the DNS server to which the translation request was sent.

17. The information handling system of claim 12, wherein the translation tool further includes software code adapted to send the request to translate the domain name to a plurality of DNS servers in the order the DNS servers are received from the network configuration server.

18. The information handling system of claim 17, wherein the translation tool further includes software code adapted to send the request to translate the domain name to the DNS servers in the order the DNS servers are received from the network configuration server and subsequently send the request to translate the domain name to the DNS servers in the orders the DNS servers are listed in the DNS server IP address list.

19. A computer program product on computer operable media, the computer program product comprising software code effective to:

send a request to a first DNS server to translate a domain name into an IP address;

receive a “

not found”

response from the first DNS server indicating that the domain name was not found; and

send the request to translate the domain name to a second DNS server in response to receiving the “

not found”

response from the first DNS server.

20. The computer program product of claim 19, wherein an IP address of the first DNS server and an IP address of the second DNS server are listed in a DNS server IP address list.

21. The computer program product of claim 20, wherein the listing order in the DNS server IP address list indicates a priority order for sending the request to translate the domain name to the DNS servers in the list and wherein the first DNS server is listed before the second DNS server.

22. The computer program product of claim 21, further comprising software adapted to allow a user to designate the priority order of the DNS servers'"'"' IP addresses listed in the DNS server IP address list.

23. The computer program product of claim 22, wherein the translation tool further includes software code adapted to create a second DNS server IP address list, wherein:

the listing order in the second DNS server IP address list indicates a priority order for sending the request to translate the domain name to the DNS servers in the second list,

for a first plurality of domain names, DNS servers are accessed in the order listed in the first list, and

for a second plurality of domain names, DNS servers are accessed in the order listed in the second list.

24. The computer program product of claim 21, wherein the translation tool further includes software code adapted to determine the priority order of the addresses in the DNS server IP address list according to a history of DNS server domain name translation requests and a history of DNS server responses to the translation requests.

25. The computer program product of claim 24, wherein the translation tool further includes software code adapted to dynamically change the priority after a translation request is sent to one of the DNS servers listed in the DNS server IP address list and a response is received from the DNS server to which the translation request was sent.

26. The computer program product of claim 21, wherein the translation tool further includes software code adapted to send the request to translate the domain name to a plurality of DNS servers in the order the DNS servers are received from the network configuration server.

27. The computer program product of claim 26, wherein the translation tool further includes software code adapted to send the request to translate the domain name to the DNS servers in the order the DNS servers are received from the network configuration server and subsequently send the request to translate the domain name to the DNS servers in the orders the DNS servers are listed in the DNS server IP address list.

28. A computer-implemented method comprising:

retrieving, from a DNS servers'"'"' IP address list, a first DNS server IP address corresponding to a first DNS server;

sending a request to the first DNS server to translate a domain name into an IP address;

receiving a negative response from the first DNS server that the domain name was not found; and

, in response to receiving the error message;

retrieving, from the DNS servers'"'"' IP address list, a second DNS server IP address corresponding to a second DNS server; and

sending the request to translate the domain name to the second DNS server in response to receiving the negative response from the first DNS server wherein, wherein the listing order in the list indicates a priority order for sending the request to translate the domain name to the DNS servers in the list and wherein the first DNS server'"'"'s IP address is listed before the second DNS server'"'"'s IP address.

29. An information handling system comprising:

one or more processors;

a memory accessible by the one or more processors;

a network interface connecting the information handling system through a network to one or more remote information handling systems;

a translation tool executable by the processors, the translation tool including software code adapted to;

retrieve, from a DNS servers'"'"' IP address list, a first DNS server IP address corresponding to a first DNS server;

send a request to the first DNS server to translate a domain name into an IP address;

receive a negative response from the first DNS server that the domain name was not found; and

, in response to receiving the error message;

retrieve, from the DNS servers'"'"' IP address list, a second DNS server IP address corresponding to a second DNS server; and

send the request to translate the domain name to the second DNS server in response to receiving the negative response from the first DNS server wherein, wherein the listing order in the list indicates a priority order for sending the request to translate the domain name to the DNS servers in the list and wherein the first DNS server'"'"'s IP address is listed before the second DNS server'"'"'s IP address.

30. A computer program product on computer operable media, the computer program product comprising software code effective to:

retrieve, from a DNS servers'"'"' IP address list, a first DNS server IP address corresponding to a first DNS server;

send a request to the first DNS server to translate a domain name into an IP address;

receive a negative response from the first DNS server that the domain name was not found; and

, in response to receiving the error message;

retrieve, from the DNS servers'"'"' IP address list, a second DNS server IP address corresponding to a second DNS server; and

send the request to translate the domain name to the second DNS server in response to receiving the negative response from the first DNS server wherein, wherein the listing order in the list indicates a priority order for sending the request to translate the domain name to the DNS servers in the list and wherein the first DNS server'"'"'s IP address is listed before the second DNS server'"'"'s IP address.