Non-disruptive software updates for servers processing network traffic
US9038053B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2012 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Aug 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3668
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Updating software on first and second network controller entities (NCEs), without disrupting traffic processing, comprises resetting the second NCE after it receives a proposed software version from the first NCE. The second NCE runs the proposed software version in a standby role. While the second NCE runs the proposed software version in the standby role, databases of the NCEs stay synchronized. Resetting the first NCE induces the second NCE to assume the master role, and the first NCE to assume the standby role. The second NCE in the master role tests the proposed software version for a predetermined period. If validation succeeds, the second NCE instructs the first NCE to reboot and run the proposed software version in the standby role. Otherwise, the second NCE reverts to running the current software version in the standby role; and the first NCE, running the current software version, reverts to the master role.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.