Route Processor Redundancy

Route Processor Redundancy

Route Processor Redundancy (RPR) was the first high-availability feature offered in a native IOS configuration for the Catalyst 6500 series, enabling an average failover time of approximately 2 minutes. The 2-minute failover time in RPR mode is due to the lack of a completely booted redundant supervisor, and the requirement for line cards to be reset during the failover to the redundant supervisor. As in the hybrid configuration, the supervisor that boots first becomes the active supervisor, while the redundant supervisor is partially booted but not all subsystems (MSFC and PFC) are operational. RPR requires both supervisors to be the same model. Even though the redundant supervisor is not operational, the GigabitEthernet ports on the supervisor are active.