Cant Ping internet from local LAN IP

[supergino]

Hey Guys, I somehow managed to get through this when I was running on ADSL but for some reason I cant on Cable internet.

I am trying to just simply ping the internet from the internal LAN interface through the external facing interface. My pings fail and when I do a debug ip packet I see the following:

----------------------
*Mar 1 17:58:55.282: IP: s=192.168.1.1 (local), d=72.14.207.104 (Ethernet0/1),
len 100, sending.
*Mar 1 17:58:57.285: IP: s=192.168.1.1 (local), d=72.14.207.104 (Ethernet0/1),
len 100, sending.
*Mar 1 17:58:59.288: IP: s=192.168.1.1 (local), d=72.14.207.104 (Ethernet0/1),
len 100, sending.
*Mar 1 17:59:01.288: IP: s=192.168.1.1 (local), d=72.14.207.104 (Ethernet0/1),
len 100, sending.
*Mar 1 17:59:03.291: IP: s=192.168.1.1 (local), d=72.14.207.104 (Ethernet0/1),
len 100, sending
4, rcvd 2.
Success rate is 0 percent (0/5)
----------------------------

I ran the ping in extended command mode so I know it used the internal LAN IP (as I specified it).

Here is my running config...

Current configuration : 1079 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname gateway
!
logging queue-limit 100
enable secret 5 $1$LBXb$7NfBnTQ0oAhJ2Sl.dA/510
!
ip subnet-zero
!
!
!
ip dhcp pool CiscoPool
network 192.168.1.0 255.255.255.0
domain-name someone.com
!
ip audit notify log
ip audit po max-events 100
ip audit po max-events 100
!
!
!
!
!
!
!
!
!
!
!
!
no voice hpi capture buffer
no voice hpi capture destination
!
!
mta receive maximum-recipients 0
!
!
!
!
interface Ethernet0/0
ip address 192.168.1.1 255.255.255.0
ip nat inside
half-duplex
!
interface Serial0/0
no ip address
shutdown
!
interface Ethernet0/1
description INTERNET FACING
ip address dhcp
ip nat outside
half-duplex
!
ip nat inside source list 5 interface Ethernet0/1 overload
ip http server
no ip http secure-server
ip classless
!
!
!
access-list 5 permit 192.168.1.0 0.0.0.254
!
call rsvp-sync
!
!
mgcp profile default
!
dial-peer cor custom
!
!
!
!
!
line con 0
password mypassword
login
line aux 0
line vty 0 4
password mypassword
login
!
!
end


Any help is appreciated.

Thanks.

SG

 

[vipergg]

Did you try a default static route pointing out interface E0/1 .

 

[supergino]

ye I did that afterwards and it still didnt work.

 

[supergino]

Sorry to add another note, I also get this once the ping fails...just saw this...sorry.

*Mar 1 00:03:27.811: IP: s=10.162.96.1 (Ethernet0/1), d=99.243.198.21 (Ethernet
0/1), g=99.243.198.21, len 328, forward
*Mar 1 00:03:27.815: IP: s=10.162.96.1 (Ethernet0/1), d=99.243.198.21 (Ethernet
0/1), len 328, encapsulation failed
*Mar 1 00:03:28.328: IP: s=10.162.96.1 (Ethernet0/1), d=99.243.198.42 (Ethernet
0/1), len 328, rcvd 3

 

[t0mm0]

shouldn't your access list be different?

As you have: access-list 5 permit 192.168.1.0 0.0.0.254

change it to access-list 5 permit 192.168.1.0 0.0.0.255

As 192.168.1.1 would have no access..

 

[supergino]

um.....maybe...I will try that and let you know

 

[burtsbees]

t0mm0 is right on. Does this router go to a modem of some sort, and is the modem in total bridge mode?

Burt