Figure 8-1: Major TcP/P Standards User Applications Supervisory Applications 5 Application Http SmtP/many Dns/rouTingmany Others Protocols Others 4 Transport TCP UDP ICMP MPLS 3 Internet IP ARP 2 Data link None: Use osi Standards 1 Physid Internetworking is done at the internet and transport layers There are only a few standards at these layers We will look at the shaded protocols in this chapter 8-88-8 Figure 8-1: Major TCP/IP Standards 5 Application User Applications HTTP SMTP Many Others DNS Routing Protocols Many Others Supervisory Applications 4 Transport TCP UDP 3 Internet IP MPLS ARP 2 Data Link None: Use OSI Standards 1 Physical None: Use OSI Standards Internetworking is done at the internet and transport layers. There are only a few standards at these layers. We will look at the shaded protocols in this chapter. ICMP