!router

en

conf t

int gi 0/0
ip addr 172.17.25.2 255.255.255.252
no sh
exit

int gi 0/1
no sh
exit 

int gi 0/1.10
encapsulation dot1q 10
ip addr 172.17.10.1 255.255.255.0

no sh

int gi 0/1.20
encapsulation dot1q 20
ip addr 172.17.20.1 255.255.255.0
no sh

int gi 0/1.30
encapsulation dot1q 30
ip addr 172.17.30.1 255.255.255.0
no sh
exit


!Switch1
en 

conf t

vlan 10
name Staff
int range fa 0/11-17
switchport mode access
switchport access vlan 10
no sh	
exit


vlan 20
name Students
int range fa 0/18-24
switchport mode access
switchport access vlan 20
no sh	
exit

vlan 30
name Guest
int range fa 0/6-10
switchport mode access
switchport access vlan 30
no sh	
exit

int gi 0/1
switchport mode trunk
no sh