cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
801
Views
0
Helpful
1
Replies

Unable to get Cisco 1841 to Route Traffic to Internet

jwood1650
Level 1
Level 1

I have a Cisco 1841 that I can ping internet address from, but when I try to ping from my laptop, it fails.  I can ping the router fine, just not yahoo.com.  Traceroute works fine on the router, but fails on the laptop. 

Any ideas?

Building configuration...

Current configuration : 2024 bytes

!

! Last configuration change at 21:36:54 PSD Fri Jan 3 2014

! NVRAM config last updated at 21:33:19 PSD Fri Jan 3 2014

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Router

!

boot-start-marker

boot system usbflash0:c1841-advipservicesk9-mz.124-12.bin

boot-end-marker

!

!

no aaa new-model

clock timezone PSD -8

ip cef

!

!

!

!

ip name-server 192.168.1.250

ip name-server 68.105.28.16

ip name-server 68.105.29.16

ip name-server 8.8.8.8

ip name-server 8.8.4.4

!

!

!

!

!

!

!

!

interface FastEthernet0/0

ip address 192.168.1.6 255.255.255.0

duplex auto

speed auto

!

interface FastEthernet0/1

ip address 24.234.XXX.XXX 255.255.255.224

duplex auto

speed auto

!

ip default-gateway 24.234.191.225

ip route 0.0.0.0 0.0.0.0 24.234.191.225

!

!

no ip http server

no ip http secure-server

!

snmp-server community public RW

snmp-server location Las Vegas, NV, USA

snmp-server contact Jonathan Wood - Network Admin

snmp-server chassis-id Cisco1841-Router

snmp-server enable traps snmp linkdown linkup coldstart warmstart

snmp-server host 192.168.1.155 version 2c public

!

!

!

!

control-plane

!

!

!

line con 0

line aux 0

line vty 0 4

login

!

scheduler allocate 20000 1000

end

1 Reply 1

Peter Paluch
Cisco Employee
Cisco Employee

Hi Jonathan,

You seem to be missing the NAT configuration. Would you mind adding the following lines to your configuration?

interface FastEthernet0/0

ip nat inside

!

interface FastEthernet0/1

ip nat outside

!

no ip default-gateway

!

ip access-list standard NAT

permit 192.168.1.0 0.0.0.255

!

ip nat inside source list NAT interface FastEthernet0/1 overload

You can paste them into your configuration as displayed here.

The no ip default-gateway command is there to remove the ip default-gateway command currently present in your configuration. That command is not necessary - it would have an effect only if your router had IP routing support deactivated and acted as an end host.

Review Cisco Networking for a $25 gift card