ネットワーク層
IPv4/IPv6, Internet Protocol DVMRP, Distance Vector Multicast Routing Protocol ICMP, Internet Control Message Protocol IGMP, Internet Group Multicast Protocol PIM-SM, Protocol Independent Multicast Sparse Mode PIM-DM, Protocol Independent Multicast Dense Mode
IPSec, Internet Protocol Security
IPX, Internetwork Packet Exchange
RIP, Routing Information Protocol
OSPF, Open Shortest Path First
DDP, Datagram Delivery Protocol