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Configuration Guide - Device Management

S7700 and S9700 V200R013C00

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.

You are advised to bundle CSS uplinks and downlinks into Eth-Trunks for link redundancy. Otherwise, data traffic may be interrupted for several minutes based on the service deployment.

Updated: 2019-04-20

Document ID: EDOC1100065738

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