Security: IPv6 First Hop Security : IPv6 First Hop Security Overview
 
IPv6 First Hop Security Overview
IPv6 FHS is a suite of features designed to secure link operations in an IPv6-enabled network. It is based on the Neighbor Discovery Protocol and DHCPv6 messages.
In this feature, a Layer 2 switch filters Neighbor Discovery Protocol messages, DHCPv6 messages and user data messages according to a number of different rules.
A separate and independent instance of IPv6 First Hop Security runs on each VLAN on which the feature is enabled.