This feature is a Standard Image (SI) to Enhanced Image (EI) Upgrade License for the DXS-3400-24TC Managed Switch. Upgrading a switch with this software adds additional features

IPv6 Tunneling
OSPF
BFD
IGMP v1/v2/v3
MLD v1/v2
IGMP/MLD Proxy
DVMRP v3
PIM SM/DM/SSM/SDM
MSDP