PROPOGATION OF DNS SERVER IP ADDRESSES IN A PRIVATE NETWORK

• US 20110010463A1
• Filed: 07/09/2009
• Published: 01/13/2011
• Est. Priority Date: 07/09/2009
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Gloe, Christopher T., Christenson, David A.
• Granted Patent: US 8,578,055 B2
• Time in Patent Office: Days
• US Class Current: 709/245
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04L 61/5076 Update or notification mechanisms, e.g. DynDNS

Abstract

Systems, methods and articles of manufacture are disclosed for updating IP addresses on a private network. A DNS server receives an updated IP address and stores both the updated IP address and an old IP address. The DNS server includes the updated IP address in responses to all DNS query requests, wherein the DNS query requests are to the old IP address. Further, the DNS server deletes the old IP address and updates the DNS server network settings with the updated IP address after every remote client on the private network has stored the updated IP address.

Claims

1. A computer implemented method for updating IP addresses on a private network, comprising configuring one or more processors to perform an operation, comprising:

receiving an updated IP address on a private DNS server to replace an old IP address;

storing the old IP address on the private DNS server;

receiving a DNS query from a remote client addressed to the old IP address associated with the private DNS server;

responding to the remote client with the updated IP address;

deleting the old IP address from the private DNS server after all remote clients have stored the updated IP address; and

updating the private DNS server network settings with the updated IP address.

2. The computer implemented method of claim 1, wherein the private DNS server determines that all remote clients have stored the updated IP address after an elapsed time period.

3. The computer implemented method of claim 2, wherein the time period is defined by a user.

4. The computer implemented method of claim 2, wherein the time period is defined automatically by the private DNS server based on the latest expiring TTL on the private network.

5. The computer implemented method of claim 1, wherein the private DNS server determines that all remote clients have stored the updated IP address after the private DNS server receives a client confirmation response from all remote clients, as defined in a remote client list.

6. The computer implemented method of claim 5, wherein the remote client list is generated by analyzing a DNS log on the private DNS server and identifying all unique clients that have previously communicated with the private DNS server.

7. The computer implemented method of claim 1, wherein the operation further comprises broadcasting the updated IP address on the shared LAN segment.

8. A computer readable storage medium containing a program, which when executed performs an operation for modifying IP addresses on a private network, comprising:

receiving a updated IP address on a private DNS server to replace an old IP address;

storing the old IP address on the private DNS server;

receiving a DNS query from a remote client addressed to the old IP address associated with the private DNS server;

responding to the remote client with the updated IP address; and

deleting the old IP address from the private DNS server after all remote clients have stored the updated IP address.

9. The computer readable storage medium of claim 8, wherein the private DNS server determines that all remote clients have stored the updated IP address after an elapsed time period.

10. The computer readable storage medium of claim 9, wherein the time period is defined by a user.

11. The computer readable storage medium of claim 9, wherein the time period is defined automatically by the private DNS server based on the latest expiring TTL on the private network.

12. The computer readable storage medium of claim 8, wherein the private DNS server determines that all remote clients have stored the updated IP address after the private DNS server receives a client confirmation response from all remote clients, as defined in a remote client list.

13. The computer readable storage medium of claim 12, wherein the remote client list is generated by analyzing a DNS log on the private DNS server and identifying all unique clients that have previously communicated with the private DNS server.

14. The computer readable storage medium of claim 8, wherein the operation further comprises broadcasting the updated IP address on the shared LAN segment.

15. A system, comprising:

a processor; and

a memory containing a program, which when executed by the processor is configured to perform an operation for modifying IP addresses on a private network, comprising;

receiving a updated IP address on a private DNS server to replace an old IP address;

storing the old IP address on the private DNS server;

receiving a DNS query from a remote client addressed to the old IP address associated with the private DNS server;

responding to the remote client with the updated IP address; and

deleting the old IP address from the private DNS server after all remote clients have stored the updated IP address.

16. The system of claim 15, wherein the private DNS server determines that all remote clients have stored the updated IP address after an elapsed time period.

17. The system of claim 16, wherein the time period is defined by a user.

18. The system of claim 16, wherein the time period is defined automatically by the DNS server based on the latest expiring TTL on the private network.

19. The system of claim 15, wherein the private DNS server determines that all remote clients have stored the updated IP address after the private DNS server receives a client confirmation response from all remote clients, as defined in a remote client list.

20. The system of claim 19, wherein the remote client list is generated by analyzing a DNS log on the private DNS server and identifying all unique clients that have previously communicated with the private DNS server.

21. The system of claim 15, wherein the operation further comprises broadcasting the updated IP address on the shared LAN segment.