The switch will allow only one user to connect to it at any given time. Below are the configs and oputputs.
ol-dr-6509-01#show users
Line User Host(s) Idle Location
* 1 vty 0 gkeo idle 00:00:00 192.168.3.130
2 vty 1 idle 23w6d
3 vty 2 idle 37w4d
4 vty 3 idle 37w4d
5 vty 4 idle never
6 vty 5 idle never
7 vty 6 idle never
8 vty 7 idle never
9 vty 8 idle never
10 vty 9 idle never
11 vty 10 idle never
12 vty 11 idle never
13 vty 12 idle never
14 vty 13 idle never
15 vty 14 idle never
16 vty 15 idle never
Interface User Mode Idle Peer Address
net_mgmt>>192.168.1.2
Trying 192.168.1.2 ...
% Connection refused by remote host
-----
!
aaa new-model
!
!
aaa group server tacacs+ site-tacacs
server 192.168.3.4
server-private 192.168.3.4 key 7 xxxxxxx
ip vrf forwarding vpn_mgmt
ip tacacs source-interface Vlan23
!
aaa authentication login default group site-tacacs local
aaa authentication enable default group site-tacacsenable none
aaa authorization exec default group site-tacacs local if-authenticated
aaa accounting exec default start-stop group tacacs+
aaa accounting commands 15 default start-stop group tacacs+
aaa accounting connection default start-stop group tacacs+
!
!
!
line vty 0 4
session-timeout 1
exec-timeout 30 0
password 7 xxxxxxx
line vty 5 15
session-timeout 1
exec-timeout 30 0
password 7 xxxxxx
!
