!! Router !!

en
conf t

int g0/1
 ip address 192.168.1.1 255.255.255.0
 no shut
exit
!! configure g0/2 (2.1)   &  g0/3 (3.1)
---------------------------------------------------------------------------------
!! Switch1

en
conf t
hostname S1

int g1/1
 switchport access vlan 10
exit
!! configure g2/1 ( vlan 20 )   &  g3/1 ( vlan 30 )
------------------------------------------------------------------------------------
!! ping from 1.2 -> 2.2 & 1.2 -> 3.2