I am trying to configure my Cisco 1811 to work with a BellSouth/ATT DSL connection. My FE1 port is connected to ATT?s DSL modem. The interface is up and I have defined a PPPoE connection over this interface.
Here are the issues that I am having:
1. In order to get the static IP, DNS and gateway information, I have connected the DSL router to my computer?s port and defined a PPPoE connection. I have noticed a few strange parameters:
a. The IP address is: 74.173.58.*** and the subnet mask is 255.255.255.255 . I am not sure if the subnet mask is valid, when I try to enter those parameters to FE1 parameters, it tells me that the subnet mask is invalid. I have changed the IP Address mode to IP negotiated and it works however I rather set the IP to be static. What should I do?
b. The gateway is the same as the IP address, does it make sense?
c. I do not have DNS server in my internal network (For now) so I rather use the ISP DNS servers directly. I have entered the DNS servers that appeared under my computer?s IPConfig /all list. Is that ok?
2. When trying to ?Test the Connection? , I have selected the ?Automatically determined by SDM option and started the test. The test fails when it gets to: ?Checking Exit Interface? and I get the following error message: The specified hostname/IP address is not routed through the selected interface. / Specify a hostname/ip address routed through the selected interface or add a 'host specific/network specific/default' route through this interface and retest connection.
I could not find how to follow the recommendation and the only thing that was close was the Routing section. I do not know if it make sense but what I have tried to do is to define a default route (Prefix/Prefix Mask set to 0.0.0.0) and the forwarding is set to the IP Address/gateway. I have to restart interface FE1 however I keep getting this error message.
I have attached a text file with a copy of the config below. Can you please help?
THANK YOU, JOE
ignore ICMP redirect that is not the problem.
Now, if you do "show run" you should see the default route you entered previously. Again, the command is "ip route 0.0.0.0 0.0.0.0 dialer0" in global configuration mode, or "ppp ipcp route default" under "interface dialer0".