Why am I prompted for username and password even though I input these

[Iloveyou]

commands?

aaa authentication login default group tacacs+ local
aaa authentication login console local
aaa authorization network default group tacacs+

line con 0
exec-timeout 5 0
stopbits 1

There is nothing configured under line con 0, so why am i prompted for username and password after restart? 

[MHM Cisco World]

When you config aaa by default any vty have 

Authentication defualt command.

This command is make vty use aaa for auth

Try show running all to see this command

[Iloveyou]

What is the difference between these 2 commands then (if aaa is automatically pushed to console and vty):

aaa authentication login default group tacacs+ local
aaa authentication login console local

[DanielP211]

The second command creates a "group" console that can be used and uses local users for login. The first applys tacacs+ (secondary local) login for all the logins.

BR

[MHM Cisco World]

MHM

[Iloveyou]

But my line console0 is like this:

line con 0
exec-timeout 5 0
stopbits 1

So why am I requested for username and password?

[MHM Cisco World]

MHM

[Iloveyou]

But I didn't put login or login local under line console 0, so why is it prompting me for username and password?

[MHM Cisco World]

MHM

[Iloveyou]

but i never put ANYTHING under line console 0, so why it ask me for username and password?

[MHM Cisco World]

MHM

[MHM Cisco World]

MHM

[DanielP211]

You have aaa configured so it will take this configuration by default on vty and console. Use no login under line con 0 to disable it.

BR