what is privilege level in Cisco IOS explained in easy language | part-43 |CCNA 200-301
Cisco IOS offers 16 privilege levels for access to different commands
But most users of Cisco routers are familiar with only two privilege levels:
User EXEC mode — privilege level 1
Privileged EXEC mode — privilege level 15
When you log in to a Cisco router under the default configuration, you're in user EXEC mode (level 1). From this mode, you have access to some information about the router, such as the status of interfaces, and you can view routes in the routing table. However, you can't make any changes or view the running configuration file.
Because of these limitations, most Cisco router users immediately type enable to get out of user EXEC mode. By default, typing enable takes you to level 15, privileged EXEC mode. In the Cisco IOS, this level is equivalent to having root privileges in UNIX or administrator privileges in Windows. In other words, you have full access to the router.
For networks maintained by just a few people, everyone typically has the password to get to privileged mode. But at some point, those small and midsize companies may likely grow, and that's when privileges become more complicated.
Many times, it starts with having a support group or less senior administrator who needs less access to something on the router. Perhaps they need to connect to routers to view the running configuration or reset interfaces.
In such cases, the person would need some level of access between level 1 and level 15. Remember the principle of least privilege — only give access to what's necessary and no more.
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