1、设备拓扑：

N7K（mgmt0)----VMnet1-----ACS5.2

2、设备配置：
2.1、基础配置
第一部分：N7K
interface mgmt0
vrf member management
ip address 10.0.0.101/24
测试连通性：
N7K-2# ping 10.0.0.1
PING 10.0.0.1 (10.0.0.1): 56 data bytes
ping: sendto 10.0.0.1 64 chars, No route to host
^C
--- 10.0.0.1 ping statistics ---
1 packets transmitted, 0 packets received, 100.00% packet loss
N7K-2# ping 10.0.0.1 vrf management
PING 10.0.0.1 (10.0.0.1): 56 data bytes
64 bytes from 10.0.0.1: icmp_seq=0 ttl=63 time=0.677 ms
64 bytes from 10.0.0.1: icmp_seq=1 ttl=63 time=0.524 ms
64 bytes from 10.0.0.1: icmp_seq=2 ttl=63 time=0.952 ms
64 bytes from 10.0.0.1: icmp_seq=3 ttl=63 time=0.843 ms
64 bytes from 10.0.0.1: icmp_seq=4 ttl=63 time=0.469 ms

--- 10.0.0.1 ping statistics ---
5 packets transmitted, 5 packets received, 0.00% packet loss
round-trip min/avg/max = 0.469/0.692/0.952 ms

第二部分：ACS5.2
ACS/admin# sho interface gigabitEthernet 0
eth0 Link encap:Ethernet HWaddr 00:0C:29:33:F9:EF
inet addr:10.0.0.102 Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe33:f9ef/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5735 errors:0 dropped:0 overruns:0 frame:0
TX packets:7979 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1319303 (1.2 MiB) TX bytes:8018911 (7.6 MiB)
Interrupt:177 Base address:0x2000

测试连通性：
ACS/admin# ping 10.0.0.1
PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=0 ttl=64 time=0.240 ms
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.190 ms
64 bytes from 10.0.0.1: icmp_seq=2 ttl=64 time=0.207 ms
64 bytes from 10.0.0.1: icmp_seq=3 ttl=64 time=0.185 ms

--- 10.0.0.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3016ms
rtt min/avg/max/mdev = 0.185/0.205/0.240/0.025 ms, pipe 2

ACS/admin#

2.2、保证N7K和ACS之前的连通性：
N7K-2# ping 10.0.0.102 vrf management
PING 10.0.0.102 (10.0.0.102): 56 data bytes
64 bytes from 10.0.0.102: icmp_seq=0 ttl=63 time=0.713 ms
64 bytes from 10.0.0.102: icmp_seq=1 ttl=63 time=0.564 ms
64 bytes from 10.0.0.102: icmp_seq=2 ttl=63 time=0.629 ms
64 bytes from 10.0.0.102: icmp_seq=3 ttl=63 time=0.654 ms
64 bytes from 10.0.0.102: icmp_seq=4 ttl=63 time=1.162 ms

--- 10.0.0.102 ping statistics ---
5 packets transmitted, 5 packets received, 0.00% packet loss
round-trip min/avg/max = 0.564/0.744/1.162 ms
N7K-2#

2.3、配置Tacacs
主要配置部分体现为绿色配置，其他部分为默认或自动产生配置。
N7K-2# sho running-config tacacs+ all

!Command: show running-config tacacs+ all
!Time: Mon Sep 2 12:21:19 2019

version 6.1(1)
feature tacacs+

tacacs-server key 7 "Fewhg@123"
no ip tacacs source-interface
tacacs-server test username test password test idle-time 0
tacacs-server timeout 5
tacacs-server deadtime 0
tacacs-server host 10.0.0.102 port 49
tacacs-server host 10.0.0.102 test username test password test idle-time 0
aaa group server tacacs+ TACACS
　　server 10.0.0.102
　　use-vrf management
　　no source-interface

2.4、ACS配置
N7K-2这个名字不一定要和设备一样，这里为了好分别！这只是定义设备的一个名字，主要是那个IP地址。

3、验证

N7K-2# exit

*****************
Username: admin
Password: cisco
*****************
N7K-2 login: admin
Password: （这里使用的是cisco，错误了！）
Login incorrect

*****************
Username: admin
Password: cisco
*****************
login: admin
Password: （这里使用了AAA的账户，成功了！）
Last login: Mon Sep 2 12:03:31 UTC 2019 on ttyS0
Last login: Mon Sep 2 12:25:25 on ttyS0
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N7K-2#

4、ACS上查看认证信息

可以看到如下是我前后两次输错和输对密码的情况：

Detail信息：