Cisco 1941 Router - WAN

[svenkasier]

Hello,

As I am looking days already to find a good guide or manual... I cannot find how to install a WAN port on int g0/0..

Everything I try is not working. From things I've read I tried also not working sadly.

Is there anyone who has a good manual/tutorial on this?

Or can guide me through in a small step per step guide.

Kind Regards,

Sven

[John Blakley]

Can you tell us a little more about the connection type that you're using? Is it an ethernet circuit, DSL, cable, etc?

[svenkasier]

My setup is:

Modem(DHCP included) to Cisco 1941

Thanks,

[John Blakley · Accepted solution]

Can you post what you've done and what you're seeing happen? Technically, the only thing you would need for dhcp is:

int g0/0

ip address dhcp

HTH,

John

[svenkasier]

Hello John,

This works.. But I still don't have any internet connection. Limited acces:

version 15.2
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
!
ip cef
!
!
!
!
!
!
no ipv6 cef
multilink bundle-name authenticated
!
!
!
license udi pid CISCO1941/K9 sn FCZ18139130
!
!
!
!
!
!
!
!
interface Embedded-Service-Engine0/0
 no ip address
 shutdown
!
interface GigabitEthernet0/0
 ip address dhcp
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 ip address 20.30.40.1 255.255.255.0
 duplex auto
 speed auto
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line 2
 no activation-character
 no exec
 transport preferred none
 transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
 stopbits 1
line vty 0 4
 login
 transport input all
!
scheduler allocate 20000 1000
!
end

I configured my pc in the range of 20.30.40.50
                                                      255.255.255.0
                                                       20.30.40.1

Thanks

[John Blakley]

You'll need to configure nat as well. For example:

access-list 100 permit ip 20.30.40.0 0.0.0.255 any

ip nat inside source list 100 interface g0/0 overload

You'll also need to specify a default route:

ip route 0.0.0.0 0.0.0.0 <whatever the gateway is that your ISP gave you>

You may already have a default route from DHCP. To check, do "show ip route 0.0.0.0" If you get something back, it should tell you what your next hop is. Or you can just do "show ip route" and look for the line that says "Last resort". That's your ISPs router....

[svenkasier]

Sorry for being an amateur. But this commands just go into the conf t modus? 

Thanks in advance!

[John Blakley · Accepted solution]

Yes it does...

At the # prompt

router# config t <enter>

[svenkasier]

Working like a charm now, thanks :)

[John Blakley]

You're welcome! I'm glad to hear it :)