vi
Backing up the startup configuration file ··················································································································· 121
Deleting a startup configuration file to be used at the next startup ········································································ 122
Restoring a startup configuration file ························································································································· 122
Displaying and maintaining a configuration file ······································································································ 123
Configuring software upgrade ······························································································································· 124
Overview······································································································································································· 124
Software upgrade methods ········································································································································· 125
Upgrading the boot ROM program through a system reboot················································································· 126
Upgrading the boot file through a system reboot ····································································································· 127
Upgrading IRF member switch boot file ···················································································································· 128
Software upgrade by installing hotfixes ···················································································································· 129
Patch and patch file ············································································································································ 129
Patch types ··························································································································································· 129
Patch status ··························································································································································· 129
Configuration prerequisites ································································································································ 132
One-step patch installation ································································································································· 133
Step-by-step patch installation ···························································································································· 133
Step-by-step patch uninstallation ························································································································ 134
Displaying and maintaining the software upgrade ·································································································· 134
Software upgrade configuration examples ··············································································································· 134
Immediate upgrade configuration example ····································································································· 134
Hotfix configuration example ····························································································································· 136
Configuring ISSU ···················································································································································· 138
Overview······································································································································································· 138
ISSU process ························································································································································ 139
Boot file version rollback ···································································································································· 140
Configuring ISSU ························································································································································· 141
Configuration task list ········································································································································· 141
Prerequisites for performing ISSU ······················································································································ 141
Enabling version compatibility check ················································································································ 142
Configuring ISSU ················································································································································· 143
Configuring the ISSU version rollback timer····································································································· 145
Performing manual version rollback ·················································································································· 146
Displaying and maintaining ISSU ······················································································································ 146
ISSU configuration example ······································································································································· 146
Current network status and requirements analysis ··························································································· 146
Configuration procedure ···································································································································· 148
ISSU upgrade preparation ································································································································· 150
Performing compatible ISSU upgrade ··············································································································· 154
Performing incompatible ISSU upgrade ··········································································································· 155
Configuring device management··························································································································· 157
Overview······································································································································································· 157
Configuring the device name ····································································································································· 157
Configuring the system clock ······································································································································ 157
Displaying the system clock ······························································································································· 158
Enabling the display of copyright information ·········································································································· 161
Configuring banners ···················································································································································· 161
Input modes ·························································································································································· 162
Banner configuration example ··························································································································· 162
Configuring the exception handling method ············································································································ 163
Rebooting the device ··················································································································································· 163
Configuring scheduled tasks ······································································································································· 165
Configuring a scheduled task—Approach 1 ··································································································· 165
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