09-22-2010 02:52 PM - edited 03-06-2019 01:08 PM
I have a 1841 router with 2 fast ethernet ports. I have 1 port connected to a lan switch. I would like port 2 to be connected to Timewarner cable for internet. Port 2 is is configured with a static IP I got from the ISP. I also configure DNS on the router. The problem that I am having is I can't ping the ISP's gateway. Could some help me?
09-22-2010 03:02 PM
Can you -
1) post config of router
2) post "sh ip int brief" from router
Jon
09-22-2010 09:32 PM
Current configuration : 1065 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname office
!
boot-start-marker
boot system flash
boot-end-marker
!
enable secret 5 $1$cU.D$bi3DAS9WRrDfxBWbTjDf50
!
no aaa new-model
ip cef
!
!
!
!
ip name-server 66.75.164.89
ip name-server 8.8.8.8
multilink bundle-name authenticated
!
!
archive
log config
hidekeys
!
!
!
!
!
interface FastEthernet0/0
ip address 10.10.20.1 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
interface FastEthernet0/1
description $ETH-WAN$
ip address 67.52.116.114 255.255.255.248
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 67.52.116.113 permanent
!
!
ip http server
ip nat inside source list 1 interface FastEthernet0/1 overload
!
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 10.10.20.0 0.0.0.255
!
!
control-plane
!
!
line con 0
login
line aux 0
line vty 0 4
login
!
scheduler allocate 20000 1000
end
09-22-2010 09:33 PM
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.10.20.1 YES NVRAM up up
FastEthernet0/1 67.52.116.114 YES manual up up
NVI0 10.10.20.1 YES unset up up
09-23-2010 03:05 AM
Mark
Can you just confirm, when you say you can't ping the ISP gateway do you mean from the router or from clients or from both ?
If the clients can you change the access-list from -
access-list 1 permit 10.10.20.0 0.0.0.255
to
access-list 101 permit ip 10.10.20.0 0.0.0.255 any
and then update your NAT statement to be -
ip nat inside source list 101 interface FastEthernet0/1 overload
As an aside, when you post config details on this forum if there are public addresses best not to reveal them ie people usually post -
x.x.x.113 rather than the full address you have posted. My fault for not mentioning it.
Jon
09-23-2010 07:16 AM
Thanks for the heads up. I can't ping x.x.x.113
from the router.
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