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 Title: |
US6108300:
Method and apparatus for transparently providing a failover network device
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Coile, Brantley W.; Athens, GA
Jordan, James A.; Lawrenceville, GA
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| Assignee: |
Cisco Technology, Inc, San Jose, CA
other patents from CISCO TECHNOLOGY, INC. (739062) (approx. 785)
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| Published / Filed: |
2000-08-22
/ 1997-08-25
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| Application Number: |
US1997000918024
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| IPC Code: |
Advanced:
G06F 11/20;
H01R 31/00;
H04B 1/74;
H04L 12/24;
H04L 29/06;
H04L 29/08;
H04L 29/12;
H04L 29/14;
Core:
more...
IPC-7:
G06F 11/00;
H04B 1/74;
H04L 1/00;
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| ECLA Code: |
H04L29/08N9A; G06F11/20L; H01R31/00B; H04B1/74; H04L12/24; H04L29/14;
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| U.S. Class: |
Current:
370/217;
340/825.01;
370/222;
714/004;
714/E11.084;
Original:
370/217;
370/222;
714/004;
340/825.01;
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| Field of Search: |
370/216,217,218,219,221,908,909,222
714/002,3,4
340/825.01,825.52
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| Priority Number: |
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| Abstract: |
A system and method are disclosed for transferring a network function from a primary network device to a backup network device. The backup network device first detects that the primary network device has failed. The backup network device then sends a message to the primary network device indicating to the primary network device that the primary network device has failed. The IP address of the backup network device changes from a standby IP address to an active IP address, and the IP address of the primary network device changes from the active IP address to the standby IP address. Packets sent to the active IP address are then handled with the backup network device.
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| Attorney, Agent or Firm: |
Ritter, Van Pelt & Yi LLP ;
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| Primary / Asst. Examiners: |
Hsu, Alpus H.; Qureshi, Afsar M.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Parent Case: |
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation in part of co-pending U.S. patent application Ser. Nos. 08/850,248, 08/850,730 and 08/850,836, all filed May 2, 1997, (Attorney Docket Nos. CISCP005, CISCP007. and CISCP008) which are incorporated herein by reference for all purposes.
This application is related to co-pending U.S. patent application Ser. No. 08/920,211 (Attorney Docket No CISCP013 filed concurrently herewith, which is incorporated herein by reference for all purposes.
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| Family: |
Show 18 known family members
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First Claim:
Show all 24 claims |
What is claimed is:
1. A method of transferring a network function from a primary network device to a backup network device comprising:
- detecting at the backup network device mapped to a standby IP address that the primary network device mapped to an active IP address has failed;
- sending a message from the backup network device to the primary network device indicating to the primary network device that the primary network device has failed;
- mapping the IP address of the backup network device from the standby IP address to the active IP address;
- mapping the IP address of the primary network device from the active IP address to the standby IP address; and
- handling packets sent to the active IP address with the backup network device.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 133 U.S. patent(s) that reference this one
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