Frames and Packets Recap In an internet with hosts separated by n networks, there will be 2 hosts One packet (going all the way between hosts) One route(between the two hosts) N frames(one in each network) 8-6
8-6 Frames and Packets • In an internet with hosts separated by N networks, there will be: – 2 hosts – One packet (going all the way between hosts) • One route (between the two hosts) – N frames (one in each network) Recap
Figure 2-21: Combining Horizontal and vertical Communication Recap App Transmission Control Protocol (TCP) Or User Datagram Protocol (UDP) Tran Irans Internet Protoco Source SwitchSwitch Router Switch Router Destination Host 2 3 2 Host 8-7
8-7 Figure 2-21: Combining Horizontal and Vertical Communication Int App DL Trans Phy Int Trans Int Int Source Host Destination Host Switch 1 Switch 2 Router 1 Switch 3 Router 2 Transmission Control Protocol (TCP) Or User Datagram Protocol (UDP) Internet Protocol (IP) Recap IP
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 8-8
8-8 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
I Figure 8-1: Major TCP/IP Standards, Continued User Applications Supervisory Applications 5 Application Http SmtP Many dns Protocolsothers Routing Many Others tRansport TCP UDP 3 Internet P ICMP ARP 2 Data link None: Use osi standards NVS At the application layer, there are user applications and supervisory applications We will look at two TCP/IP application layer supervisory applications in this chapter 8-9
8-9 Figure 8-1: Major TCP/IP Standards, Continued 5 Application User Applications HTTP SMTP Many Others DNS Routing Protocols Many Others Supervisory Applications 4 Transport TCP UDP 3 Internet IP ICMP ARP 2 Data Link None: Use OSI Standards 1 Physical At the application layer, there are None: Use OSI Standards user applications and supervisory applications. We will look at two TCP/IP application layer supervisory applications in this chapter
Page 348 Test Your understanding
• Page 348 • Test Your understanding • 1