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Configuration Guide - DCN and Server Management

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configurations of Trill, FCoE, DCB, and NLB Server Cluster Association.
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TRILL NSR

TRILL NSR

During network operation, if an active/standby switchover is triggered due to a system failure or performed manually by the network administrator for software update or system maintenance, routes are interrupted and therefore traffic is lost. TRILL uses non-stop routing (NSR) to solve this problem.

NSR applies to devices with a backup control plane. This technology ensures that the control plane on a neighbor does not detect faults on the system control plane of the local device, preventing service interruption caused by an active/standby switchover.

NSR is enabled on the device by default and does not need to be configured.

NSR Implementation

TRILL NSR implements real-time data synchronization between the active and standby control planes as follows:

  • TRILL backs up configuration data and dynamic data (information about interfaces, neighbors, and LSDBs).

  • TRILL uses the RawLink socket to send and receive packets and does not back up the socket status.

  • TRILL does not back up routes and shortest path trees (SPTs) that can be restored using the source data in the backup process.

  • After an active/standby switchover occurs, the new master device restores the operation data and takes over services from the original master device. The neighbor is unaware of the active/standby process.

For detailed NSR description, see "NSR Configuration" in the CloudEngine 8800, 7800, 6800, and 5800 Series switch Configuration Guide - Reliability.

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Updated: 2019-05-08

Document ID: EDOC1100004349

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