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Configuration Guide - Reliability

S9300, S9300E, and S9300X V200R011C10

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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Licensing Requirements and Limitations for NSR

Licensing Requirements and Limitations for NSR

Involved Network Elements

Other network elements are not required.

Licensing Requirements

NSR is a basic feature of a switch and is not under license control.

Version Requirements

Table 4-2  Products and versions supporting NSR
Product Product Model Version

S9300

S9303, S9306, and S9312

V200R010C00, V200R011C10

S9300

S9310

V200R010C00, V200R011C10

S9300X

S9310X

V200R010C00, V200R011C10

S9300E

S9303E, S9306E, and S9312E

V200R010C00, V200R011C10
NOTE:
To know details about software mappings, see Hardware Query Tool.

Feature Limitations

NSR has the following limitations:
  • The switchover time is not strictly controlled, because the switchover time is not the key performance index after the active/standby switchover of MPUs.
  • NSR cannot ensure high reliability of the system that has only one MPU.
  • If a fault occurs in the main process before the batch backup is complete, the slave process, whose status is unknown and is not switchable, cannot function as the main process.
  • The system enabled with NSR does not support system-level GR or ISSU.
  • On the device that performs the active/standby switchover of MPUs, the system supports two HA protection mechanisms: NSR and GR. NSR and GR cannot be used simultaneously. That is, during the active/standby switchover of MPUs, the system can use either NSR or GR for a specific protocol. When being deployed with NSR, a device can keep its neighbor relationship so that the device can help its neighbor complete GR. This ensures HA of services on all nodes of a network to maximum extent.
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Updated: 2019-04-17

Document ID: EDOC1000178423

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