White Paper Abstract:
Cisco Nonstop Forwarding (NSF) with Stateful Switchover (SSO) leverages hardware redundancy and provides the software infrastructure to increase system-level availability. Cisco IOS® Software Modularity for the Cisco Catalyst® 6500 Series Switch delivers a new software infrastructure with support for process independence, process restart, and subsystem level in service software upgrades. These capabilities merge to improve system and network availability, while providing infrastructure for further development.