I have a requirement to emulate our customer's network in our lab. The customer has three separate WAN coming in and they are used to communicate with the internal servers with different purposes. Now I only have a single WAN handoff from our ISP with enough IPs to cover the requirements. How do I segregate it on a switch to satisfy the emulation?
Hardware: Cisco 6500
Public IP: 64-IP block
Segment in to 32, 16, and 16 IP blocks;
Each block should has its own gateway and its clients can access the Internet.
I believe this is what ISP do to provide their customers with different block size of IPs. I am knowledgeable on how VLSM works. I am seeking for the information how the switch needs to be configured. A sample configuration or a online doc would be greatly appreciated. Please kindly advise.