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What would be a 'best practices" design for an ISP DHCP Router config - Cisco

I have a small ISP startup as client of mine, and they are trying to isolate their residential clients.  Currently they are all on a class C, and they were hoping the orivacy filter on their wireless devices would isolate the customers.  

We have discussed the thought that the ISP router's DHCP should probably be parsing out 255.255.255.255 or .254 addresses to each customer, but I would like to know the correct, professional way to set this up.

I can't imaging having to create a subnet for each customer manually...

Any help would be greatly appreciated!

-KRM
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mossmak
Asked:
mossmak
1 Solution
 
pjtemplinCommented:
If you want subnets, you need to separate them by router(s).  Even then, the other devices are still reachable.  You'd need a separate DHCP pool per subnet.

Your best bet is a firewall on the customer side of each wireless link.  Writing an ACL per customer isn't a perfect alternative, since there could be corner cases where they'd actually want/need to communicate with each other.
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mossmakAuthor Commented:
thanks
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