Operation Manual

Network Address Translation: Select None, Many to One or Many to
Many from the drop-sown list box. Refer to the NAT chapter for more
details.
RIP Version: Select the RIP version from RIP-1, RIP-2B and RIP-2M.
RIP Direction: Select the RIP direction from None, Both, In Only and Out
Only.
Multicast: IGMP (Internet Group Multicast Protocol) is a network-layer
protocol used to establish membership in a Multicast group - it is not used
to carry user data.