The DSL modem is a speedstream 4200 series and does not have any routing features apart from  the connection settings Modem LAN IP : 192.168.2.1 Modem LAN Network :  192.168.2.0 Subnet Mask:  255.255.255.0 Connection Type is PPPOE  and is terminated on the Modem itself  NOT on cisco 1841 WAN IP :  70.30.65.80 ... View more

Hi Jernej & cadel alain PPPOE is being terminated at the Speedstream Modem  NOT on the cisco 1841 Cisco 2960 does only inter-VLAN routing and forwards all traffic to Cisco 1841 through a TRUNK . Gi1/0/1 on Switch 2960 is the TRUNK connecting to cisco 1841 fa0/0 and the Fa0/1 connects to Speedstream modem  ( which has PPOE Terminated on it ) I have modified the configuration as per the suggestion above but i am still getting the same results > No success ======================================================================= ip subnet-zero no ip source-route ip cef ! ip name-server 192.168.2.1 ! interface FastEthernet0/0 no ip address no ip redirects no ip unreachables no ip proxy-arp ip route-cache flow duplex auto speed auto no mop enabled ! interface FastEthernet0/0.100 description JUPITER-VLAN encapsulation dot1Q 100 ip address 172.21.200.1 255.255.255.0 ip nat inside ip virtual-reassembly no snmp trap link-status ! ! interface FastEthernet0/0.200 description VENUS-VLAN encapsulation dot1Q 20 ip address 10.10.10.1 255.255.255.0 ip nat inside ip virtual-reassembly no snmp trap link-status ! ! interface FastEthernet0/1 ip address 192.168.2.20 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto ! ip route 0.0.0.0 0.0.0.0 192.168.2.1 ! ! ip nat inside source list JUPITER interface FastEthernet0/1 overload ! ip nat inside source list VENUS interface FastEthernet0/1 overload ! ip access-list extended JUPITER permit ip 172.21.202.0 0.0.0.255 any ! ! ip access-list extended VENUS permit ip 10.10.10.0 0.0.0.255 any ! ! ===================================Catalyst 2960-S=================== ! ip routing ! interface GigabitEthernet1/0/1 switchport trunk native vlan 920 switchport mode trunk ! interface GigabitEthernet1/0/2 switchport access vlan 100 switchport mode access ! the rest is truncated ! interface Vlan100 description JUPITER-VLAN ip address 172.21.200.2 255.255.255.0 ! interface Vlan200 description VENUS-VLAN ip address 10.10.10.2 255.255.255.0 ! ip route 0.0.0.0 0.0.0.0 172.21.200.1 ! ! the rest is truncated ------------------------------------------------------------ ... View more