Hello bevila,

I have been to this doc before, I had configured according to the above document instead of atm interface i have 2 Ethernet interface,1 is connecting to internal network and the other I m connecting the ISP link, i want to confirm instead of ATM i have fastethernet Interface connected to ISP link,Will it work ??????

interface FastEthernet0/0
description Connected to ISP Link
no ip address
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.25

description connected to internal network
encapsulation dot1Q 25
ip address 192.168.25.1 255.255.255.0
ip nat inside
ip virtual-reassembly
!
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1455
dialer pool 1
dialer idle-timeout 0
dialer persistent
dialer-group 1
ppp authentication chap callin
ppp chap hostname XXXXXX
ppp chap password  XXXXXXX
ppp pap sent-username XXXXX password 0 XXXXX
ppp ipcp dns request accept
ppp ipcp route default
ppp ipcp address accept

no ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer1
!
ip http server
no ip http secure-server
ip nat inside source list 110 interface Dialer1 overload

access-list 110 permit ip any any
!

dialer-list 1 protocol ip permit

That is what the document is all about.

Use:

mtu 1492
ip tcp adjust-mss 1452

not needed:

ip mtp 1492

dialer idle-timeout 0
dialer persistent
dialer-group 1

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Thanks for ur reply,appreciate

1 more query,

When i connect ISP link to my router the link is up but the protocol is down no LED is blinking on router interface. But when i connect to my laptop  LAN Card the LED glows and the physical connection is UP,

Is i m missing anything in the config's.???

Thanks