Cisco Switch ADSL Port Configuration Best Practice - straight forward and Easy

 ADSL Port Configuration  only change  yellow shaded text

interface GigabitEthernet0/2
 description "CONNECTED TO INT"
 no ip address
 duplex auto
 speed auto
 pppoe enable group global
 pppoe-client dial-pool-number 1
!

interface GigabitEthernet0/1

 ip nat inside

 no cdp enable

interface Dialer1
 bandwidth 100000
 ip address negotiated
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip mtu 1492
 ip nat outside
 ip virtual-reassembly in
 encapsulation ppp
 ip tcp adjust-mss 1452
 dialer pool 1
 dialer idle-timeout 0
 dialer persistent
 ppp pap sent-username EnterISPUserName password EnterISPPassword
        
 no cdp enable
ip nat translation timeout 20
ip nat translation max-entries all-vrf 200000000
ip nat inside source list nat interface Dialer1 overload
ip access-list extended nat
 permit ip any any
ip route 0.0.0.0 0.0.0.0 Dialer1