When reading about DHCP snooping at CCNA or CCNP level, its not very hard to get. On an access layer switch, we dont trust any port by default, and only trusted ports permit DHCP server messages. Thats not a big deal and not what this post is going to be about. But what happens in other scenarios?
There are many different scenarios when DHCP snooping can provide troublesome behavior if you don’t know what really happens under the hood of our switch functions.