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Configuration Guide - Device Management

S9300, S9300E, and S9300X V200R012C00

This document describes the configurations of Device Management, including device status query, hardware management, CSS, SVF, PoE, OPS, OIDS, energy-saving management, information center, fault management, NTP, synchronous ethernet, PTP.
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CSS Upgrade

CSS Upgrade

A CSS can be upgraded using the traditional upgrade method (specifying the next-startup files and restarting the CSS) or using the fast upgrade function.

The traditional upgrade method will cause lengthy service interruptions and is therefore not applicable to scenarios requiring minimal service interruptions. The fast upgrade function is more suited to these scenarios.

In a fast upgrade, the standby switch first restarts with the new system software. Data traffic is forwarded by the master switch during this period. After the standby switch completes the upgrade, it becomes the new master switch and starts to forward data traffic. Then the previous master switch restarts with the new system software. After the previous master switch completes the upgrade, it becomes the new standby switch. If the previous standby switch fails in the upgrade, it restarts and rolls back to the old version, and the CSS upgrade fails.

NOTICE:

To minimize traffic loss during an upgrade, bundle CSS uplinks and downlinks into Eth-Trunks for link redundancy.

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Updated: 2018-09-03

Document ID: EDOC1100038289

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