errors 13030 TACACS+ authentication request missing a Username on console

BigK — Mon, 12 Aug 2019 15:13:02 GMT

I have 2 routers connected with a rollover cable from router 1 console port to router 2 aux port.
This connection causes a lot of chatting and generate the below ISE message in RED. when I unplug the cables,
the message is no longer reported. I am looking on how to resolve this issue and keep the connection between the router. I read on other forum that I need to use " no exec" command on the line because it's sending bunch of junk messages on the line and that gets interpreted as an EXEC command.

Message Text Failed-Attempt: Authentication failed
Failure Reason 13030 TACACS+ authentication request missing a User name

router 1

line con 0
password 7 xxxxxxxxx
logging synchronous
stopbits 1
line aux 0
modem InOut
transport preferred none
transport input all
transport output all
stopbits 1

router 2
line con 0
password 7 xxxxxxxx
logging synchronous
stopbits 1
line aux 0
modem InOut
transport preferred none
transport input all
transport output all
stopbits 1

AAA

aaa authentication password-prompt TACACS.server.failed-Use.enable.password:
aaa authentication login default group TACACS-GROUP local-case enable
aaa authentication enable default group TACACS-GROUP enable
aaa authorization console
aaa authorization config-commands
aaa authorization exec default group TACACS-GROUP local
aaa authorization commands 15 default group TACACS-GROUP local
aaa accounting exec default start-stop group TACACS-GRO
!

Thanks

Bigk

Re: errors 13030 TACACS+ authentication request missing a Username on console

hslai — Sat, 17 Aug 2019 17:13:41 GMT

Try applying T+ only to non-aux ports. See

Re: errors 13030 TACACS+ authentication request missing a Username on console

BigK — Wed, 21 Aug 2019 22:43:36 GMT

Applying " No Exec" on Aux port resolved the issue

topic Re: errors 13030 TACACS+ authentication request missing a Username on console in Network Access Control

errors 13030 TACACS+ authentication request missing a Username on console

Re: errors 13030 TACACS+ authentication request missing a Username on console

Re: errors 13030 TACACS+ authentication request missing a Username on console