I am trying to connect a Cisco 1720 running IOS 12.1 to our isp. This is just a test to see if I can get internet connectivity before I move onto the more difficult tasks.
It has two interfaces
Ethernet0 (WIC 0)
The configuration originally had NAT enabled, but I took that out to try to isolate the problem.
The configuration I'm using is:
no ip name-server
interface FastEthernet 0
ip address 192.168.1.1 255.255.255.0
interface Ethernet 0
ip address 18.104.22.168 255.255.255.192
! Access Control List 1
! IP Static Routes
ip route 0.0.0.0 0.0.0.0 Ethernet 0
The problem is I can't ping anything on the outside network (interface Ethernet0).
The problem is seen with
show ip traffic
where it reports many encasulation failed packets.
This is happening because when I try to ping an ip address outside the network of 192.168.1.0/24 and ARP request is sent out for the destination ip. No response ever comes back so the packet encapsulation failes.
I don't know how to fix this and can't seem to find any information on this.
The WAN connection from the router is ethernet to a radio then to an ISP. I'm assuming that since it is an ethernet connection there needs to be some way of resolving an IP to a MAC address.
I would imagine the way it should work is that I need to point ethernet 0 to a gateway for which I must know the mac address or it can get it. The gateway I believe is 22.214.171.124
Many thanx for any help.
Wyoming Solutions, LLC