Cisco 881 with dynamic isp config troubles

[Vitalij]

Hello everyone, im a bit new to cisco configuration but i have big wish to learn. I have a situation here. Been trying to configure cisco 881 router tru ios for internet access, i have dynamic isp, ive been playing with this thing for a while now, and cant find a solution of what is wrong with my config. I assign vlan1 to my int fa0 still no results, no internet access, cant even ping now.... I would really need sone help...

[Vitalij]

[Vitalij]

[Georg Pauwen]

Hello,

you are at the very least missing a static route pointing to the outging WAN (ip nat outside) interface. Also, the IP address pool looks like it does not contain valid public IP addresses. The fastest way to help you is for you to post the running configuration here (show run)...

[Georg Pauwen]

Make the following changes to your configuration:

--> no ip nat pool data
--> no ip nat inside source list 1 pool data
--> ip nat inside source list 1 interface FastEthernet4 overload
--> ip route 0.0.0.0 0.0.0.0 FastEthernet4 dhcp

[Georg Pauwen]

Also, change the access list:

--> no access-list 1

--> access-list 1 permit 10.0.1.0 0.0.0.255

[Vitalij]

Thank you very mutch for a reply Sir, ive made those changes but still no access to the internet. Its becouse of my bad routing for fa4? 

[Georg Pauwen]

Post the running configuration (show run), you might have missed something...

[Vitalij]

[Georg Pauwen]

Hello,

the DHCP pool is wrong. Delete it and create it again as below:

--> no ip dhcp pool data

ip dhcp pool data
network 10.0.1.0 255.255.255.0
default-router 10.0.1.1
dns-server 8.8.8.8

[Vitalij]

Ive made the changes, my running cfg looks like this now. So i itill have no internet access becouse of my static route problems?

[Georg Pauwen]

Hello,

does your interface FastEthernet4 get an IP address at all ? Post the output of 'show ip int brief'.

Also, on FastEthernet4, remove:

interface FastEthernet4

--> no ip nat enable

[Vitalij]

Ohh, my fa4 does not get ip address.... 

[Georg Pauwen]

Hello,

what is the interface, FastEthernet4, connected to ? Can you ping 8.8.8.8 from the router ? Post the output of:

show interfaces FastEthernet4

[Vitalij]

Cant ping :(.. i have: Isp -> fastethernet4