Topology
.Switch3 configuration
.Switch>enable-----Enter privileged mode from user mode
Switch#configure terminal-----Enter global configuration mode from privileged mode
Switch(config)#line vty 0 4------Specify the vty line and enter the line configuration mode
Switch(config-line)#login local-----Specify to check the password when logging in
Switch(config-line)#transport input telnet-----Enable Telnet service
Switch(config)#username admin password 123.com-----Create a username and password for remote login
Switch(config)#int vlan 1-----Enter vlan 1 configuration mode
Switch(config-if)#ip address 192.168.10.1 255.255.255.0-----Configure vlan1 IP address and subnet mask
Switch(config-if)#no shutdown-----Enable the interface
Switch(config)#interface fastEthernet 0/1-----Enter interface configuration mode
Switch(config-if)#switchport mode trunk-----configure vlan access mode
Switch(config-if)#switchport trunk allowed vlan 1---Set the port to access VLAN 1
Switch(config-if)#no shutdown-----enable port
Switch(config)#enable password 123.com-----Set privileged mode password
Switch#write
Building configuration...
[OK]-----save configuration command
.Switch4 configuration
.Switch>enable-----Enter privileged mode from user mode
Switch#configure terminal-----Enter global configuration mode from privileged mode
Switch(config)#line vty 0 4------Specify the vty line and enter the line configuration mode
Switch(config-line)#login local-----Specify to check the password when logging in
Switch(config-line)#transport input telnet-----Enable Telnet service
Switch(config)#username admin password 123.com-----Create a username and password for remote login
Switch(config)#int vlan 1-----Enter vlan 1 configuration mode
Switch(config-if)#ip address 192.168.10.2 255.255.255.0-----Configure vlan1 IP address and subnet mask
Switch(config-if)#no shutdown-----Enable the interface
Switch(config)#interface fastEthernet 0/1-----Enter interface configuration mode
Switch(config-if)#switchport mode trunk-----configure vlan access mode
Switch(config-if)#switchport trunk allowed vlan 1---Set the port to access VLAN 1
Switch(config-if)#no shutdown-----enable port
Switch(config)#enable password 123.com-----Set privileged mode password
Switch#write
Building configuration...
[OK]-----save configuration command
Telnet Remote Login Switch Authentication
