Hi,
I have got a cable modem (model above) connected via ethernet to a C871 with 1 Fastethernet port and 4 L2 ports.
I have configured the following so that I can ping the gateway of my ISP. I have been given a static IP address.
Router#sh run
Building configuration...
Current configuration : 899 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
resource policy
!
ip subnet-zero
ip cef
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
description OUTSIDE
ip address 82.x.x.72 255.255.255.240
ip access-group 100 in
ip access-group 100 out
duplex auto
speed auto
!
interface Vlan1
no ip address
!
no ip classless
ip route 0.0.0.0 0.0.0.0 82.45.180.69
!
!
no ip http server
no ip http secure-server
!
access-list 100 permit ip any any log
access-list 100 deny ip any any log
!
!
control-plane
!
###############################
I am unable to ping the GW address but I can ping this GW if the cable modem is connected straight into my PC.
Can anyone suggest why? I tried using both cross-over and straight between the cable modem and the router. Same outcome.
Thanks
