Routing system and method for transparently rocovering routing states after a failover or during a software upgrade
US7506194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Feb 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/586
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for efficiently enabling routing states to be recovered after a failover or during a software upgrade in a system which supports graceful restart and stateful switchover are disclosed. According to one aspect of the present invention, a method for restarting a network device which has a plurality of routers and is in communication with a first peer being arranged to support graceful restart and a second peer includes performing a graceful restart with respect to the first peer. A peer transparent failover is performed with respect to the second peer. The graceful restart and the peer transparent failover are performed in response to a failure associated with the network device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.