Tacacs authentication

hello all,

i would like to ask you for advice about tacacs configuration

we have vyatta 5600 1801m

i have configured tacacs on vrouter in this way

set system login tacplus-server 15.8.2.64 secret xxxxxxxxxx
set system login tacplus-server 15.8.2.64 port 1049
set system login tacplus-server 15.8.8.14 secret xxxxxxxxxx
set system login tacplus-server 15.8.8.14 port 1049
set system tacplus-options command-accounting

i am able to authenticate to the tacacs server but i have just read-only rights. after discussions with team responsible for Tacacs server we found out that vrouter is trying to authenticate with local user UID “vyatta” instead of tacacs UID which i am normally using for authentication towards tacacs server for other devices.
very strange thing is that even i am able to authenticate.

on the device are configured just those 2 users:
login {
user root {
authentication {
encrypted-password “"
}
level admin
}
user vyatta {
authentication {
encrypted-password "

}
level admin

do you know what could be root cause ?

thanks in advance

Unfortunately for you, this is a vyos support forum, not vyatta. There is no chance to help you with your question.