26255.255.255.0.Type the subnet mask assigned to you by your ISP (if given).Gateway: You must specify a gateway IP address (supplied by your ISP) when you use1483 Bridged IP in the Encapsulation field in the previous screen.Network Address Translation: Select None, Many to One or Many to Many from thedrop-sown list box. Refer to the NAT chapter for more details.Dynamic Route: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 toestablish membership in a Multicast group - it is not used to carry user data. The 5102 Seriessupports both IGMP version 1 (IGMP-v1) and IGMP-v2. Select None to disable it