Dhcp

shedo

hello
so i was reading about situations dictate when packet is denied : ( from Secure.642-637.Official.Cert.Guide )
one situation is
* A packet is recived from a DHCP relay-agen that does not match 0.0.0.0, or the DHCP relay agent forwards a packet
than inculdes option-82 information on an untrusted switchport or interface.

i dont really understand what does it mean i know what relay-agent is but what is the 0.0.0.0 ? and option-82?

SteveO86

The 0.0.0.0 is the IP client has (or doesn't have) when it looking for an IP address.



As far as Option 82, I'm honestly not sure about that one, I'll have to google it.

DHCP Offer Packet.jpg