Dear Mister
By someone reason, the Tacas is not functioning in my Nexus 5000. I am using the next configuration :
tacacs-server key 7 "0310551D121F2D595D"
ip tacacs source-interface Vlan5
tacacs-server host 10.20.2.80
tacacs-server host 10.20.16.138
aaa group server tacacs+ TACSERVER
server 10.20.2.80
server 10.20.16.138
source-interface Vlan5
use-vrf default
aaa authentication login default group TACSERVER
no aaa user default-role
aaa authentication login error-enable
tacacs-server directed-request
I did a telnet to port 49, in address , and is functioning. That discard a Security problem (FW, ACL, etc).
When I do the test, nothing is showed in the Tacacs Logs Server.
The log messages are the next:
2012 Aug 22 15:54:45 NITE1 %TACACS-3-TACACS_ERROR_MESSAGE: received bad authentication packet from 10.20.2.80
2012 Aug 22 15:54:45 NITE1 %TACACS-3-TACACS_ERROR_MESSAGE: All servers failed to respond
2012 Aug 22 15:54:48 NITE1 %AUTHPRIV-3-SYSTEM_MSG: pam_aaa:Authentication failed for user GPALAVE from 10.20.2.80 - login[3087]
The problem is very strange.
I need help.
Best regards
