Simple definition
Dynamic ARP Inspection is a concept or mechanism used in a network & security to control responses ARP information DHCP Snooping.
Technical definition
In a business environment, Dynamic ARP Inspection intervenes mainly to control the answers ARP information DHCP SnoopingIts implementation depends on the architecture, equipment and security policies in place.
What is it used for?
control responses ARP information DHCP Snooping.
Practical example
one switch block one ARP inconsistent with the AOI DHCP.
Common issues
- DHCP snooping incomplete
- Static IP
- ACL ARP absent
Key takeaway: Always adapt the diagnosis to the product version and the architecture actually deployed.