CISCO 1721, NAT and ADSL

[xyz1213]

HI,

i'm trying to configure nat for internet access over adsl. i did configure the atm0 and dialer and i am getting an ip address from the ISP. My problem is that no one on the network can access the internet, so i'm guessing i have a nat problem. here's my config. any suggestions is appreciated. thanks.

current configuration: 1038 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname router
!
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
!
!
!
ip audit notify log
ip audit po max-events 100
vpdn enable
!
vpdn-group pppoe
request dialin
protocol pppoe
!
!
!
interface atm0
no ip address
no atm ilmi-keepalive
pvc 0/35
pppoe-client dial-pool-number 1
!
dsl operating-mode auto
!
interface fastethernet0
ip address 192.168.1.1 255.255.255.0
ip tcp adjust-mss 1452
speed auto
!
interface dialer1
mtu 1492
ip address negotiated
ip nat outside
encapsulation ppp
dialer pool 1
ppp chap hostname x
ppp chap password 0
ppp pap sent-username x password 0
!
ip nat inside souce list 1 interface dialer1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 dialer1
no ip http server
ip pim bidir-enable
!
!
access-list permit any
!
!
line con 0
line aux 0
line vty 0 4
no scheduler allocate
end

 

[dnels]

First thing I notice is there is no IP NAT INSIDE on your fastethernet0 interface

Dave

 

[pc2mike]

You got off to a good start.
Here's a sample from one of my routers.
Hope it helps.
Mike


!
ip name-server XXX.XXX.XXX.XXX
ip name-server XXX.XXX.XXX.XXX
!
vpdn enable
!
vpdn-group pppoe
request-dialin
protocol pppoe
!
!
!
!
interface ATM0
no ip address
no ip mroute-cache
atm vc-per-vp 256
no atm ilmi-keepalive
dsl operating-mode auto
no fair-queue
!
interface ATM0.1 point-to-point
pvc 8/35
pppoe-client dial-pool-number 1
!
!
interface FastEthernet0
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip tcp adjust-mss 1452
no ip mroute-cache
speed auto
!
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp pap sent-username xxxxxxx password 0 XXXXXXX
!
ip nat inside source list 101 interface Dialer1 overload
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
no ip http server
ip pim bidir-enable
!
logging history errors
logging trap debugging
logging facility local0
logging source-interface Dialer1
logging XXX.XXX.XXX.XXX (your logging server)
access-list 101 permit ip 192.168.1.0 0.0.255.255 any
dialer-list 1 protocol ip permit
!

 

[xyz1213]

thanks guys,

i rearranged the config and put "IP NAT INSIDE" statement in the interface fastethernet0.
here's the new deal:
i still can't access the internet, but with a new twist. when i ping a public address i always get 1 reply and 3 timeouts. when i run debug ppp negotiation, i get the following error ":VIL PPP: OUTBOUND CDP PACKET DROPPED, CDPCP STATE IS LISTEN.
any ideas? thanks.

 

[xyz1213]

pc2mike and dnels,

got it to work guys, thanks. i put "ip nat inside" of eth0 and and "dialer-pool 1" statement from pc2mike's config.
next step is the ipsec vpn and pix firewall. i'm sure i'll have many more questions.

p.s.
this is a great forum!!!!!!!!!