Initial configuration of router | IP address| /31/32 ip configuration | Router Modes| CCNA| CCNP
User Mode :- This mode is limited to some monitoring commands.
Privileged mode – Privileged mode where we can view and change the configuration of the router. Different commands like show running-configuration, show IP interface brief, etc can run on this mode which is used for troubleshooting purposes.
Global configuration mode – In this mode, you can configure and from here also you can jump to interface mode too.
Like if you want to configure routing protocol, hostname, telnet, ssh etc configuration you can do here
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