In-service software upgrade on cards of virtual partition of network element that includes directing traffic away from cards of virtual partition
US8402454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2010 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | May 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F8/656
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method within network element, for directing traffic away from cards of first virtual partition, before changing software on cards of first virtual partition, until after cards of first virtual partition have session data, while network element services sessions. Redistribute sessions, serviced by cards of first virtual partition, to cards of second virtual partition. Each of virtual partitions has control card and line card. Direct traffic away from cards of first virtual partition, prior to taking line card of first virtual partition offline. After redistributing sessions, change software on line card of first virtual partition, while cards of second virtual partition service sessions, including redistributed sessions. After changing software, synchronize session data, for sessions serviced by cards of second virtual partition to cards of first virtual partition. Traffic is directed away from cards before changing software on line card, and until after synchronizing session data to cards of first partition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.