I have a Cisco 2811 router that connects to a Sprint T1. We have been assigned two blocks of public IP addresses:
65.xxx.xxx.17 255.255.255.248 and 63.xxx.xxx.32 255.255.255.248
The FastEthernet 0/0 interface has the following IP addresses listed:
63.xxx.xxx.33 255.255.255.248 secondary
The block of 65.xxx.xxx.17 works just great. All devices can be reached both inside and outside.
The block of 63.xxx.xxx.32 can only access 63.xxx.xxx.33. Any other devices that are given an IP (e.g., 63.xxx.xxx.34) cannot even be pinged.
I am not familiar with Cisco configuration at all and was wondering why the other IPs do not work?