Getting invalid input result while configuring AAA, and tacacs commands on New ISR 4461.

[Nemat Osama]

Dear All.

We have new ISR 4461, we are trying to commit the below commands, but we get [ an invalid input ]. 

aaa new-model
aaa authentication login default group tacacs+ local

aaa session-id common

tacacs server xxxx
address ipv4 172.16.1.33
key w@xxxx#333

Any help please.

[paul driver]

Hello 

I don't see any aaa authorisation so try the following:

aaa new-model
aaa authentication login default group tacacs+ local

aaa authorisation exec login default group tacacs+ local if-authenticated

aaa authorisation console

[Tyson Joachims]

Which command comes back as invalid and where does the carrot (^) show as the invalid part?

If you're in config mode and type "tac?" what options do you see? Do they look like below?

R3(config)#tac?
tacacs  tacacs-server

R3(config)#tac

[balaji.bandi]

i have seen this one of the 15.X  code as bug, can you post show version.