RIPng NSR
Background
As networks develop, the demand for data, audio, and video services is growing, which imposes increasing requirements on IP network reliability. If an AMB/SMB switchover is performed on a device during a maintenance operation or a single point of failure occurs, routes may fail to converge, which may result in traffic loss or even a network breakdown. Non-stop routing (NSR) can address this problem and ensure uninterrupted forwarding of key services.
Related Concepts
- High availability (HA): supports data backup between the AMB and SMB.
- Non-stop forwarding (NSF): enables a node to use the GR mechanism to ensure uninterrupted transmission during an AMB/SMB switchover.
- NSR: allows a standby control plane to take over traffic from an active control plane if the active control plane fails, preventing the control planes of neighbors from detecting the fault.
- AMB and SMB: run control plane processes.
Implementation
With RIPng NSR, RIPng real-time data is synchronized between the AMB and SMB. After an AMB/SMB switchover is performed on a device, the SMB takes over services from the AMB, and neighbors are unaware of the local fault. After the switchover, the new AMB restores RIPng immediately based on the synchronized RIPng real-time data. Therefore, neighbors are unaware of the switchover as well. RIPng NSR requires synchronization of the following data:
All configuration data, such as information about neighbors, timer parameters, and process configurations.
Dynamic data, such as the interface parameters and state, and information about neighbors and the link state database (LSDB).
NOTE: For details about NSR, see "Uninterruptible Service Technology" in Feature Description - Reliability.
Usage Scenario
NSR minimizes the impact of control plane faults and prevents route flapping on networks that require high reliability.
Benefits
NSR improves network reliability and ensures uninterrupted traffic forwarding.
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