Issu Configuration - Huawei Quidway S9300 Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - Device Management
About This Chapter
This chapter describes the process of the ISSU and how to configure ISSU to shorten service
interruption during the upgrade and thus improve device reliability.
10.1 Introduction to ISSU
In-Service Software Upgrade (ISSU) provides a mechanism to shorten service interruption
during upgrade and rollback of the software version. ISSU greatly reduces service interruption
time to the maximum extent during software upgrade, improving device reliability. ISSU also
minimizes the impact of upgrade failure on the system through rollback.
10.2 ISSU Supported by the S9300
The ISSU features include the ISSU modes, and the ISSU process.
10.3 Implementing ISSU
By implementing ISSU, you can implement the software upgrade on a single device without
service interruption.
10.4 Maintaining ISSU
This section describes how to maintain ISSU.
10.5 Configuration Examples
The following section provides an example of the ISSU process. Familiarize yourself with the
configuration procedures against the networking diagram. The configuration example consists
of the networking requirements, configuration roadmap, configuration procedures, and
configuration files.
Issue 03 (2011-12-29)
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ISSU Configuration

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