D = Data protected by error checking, may include header fields ..... common MAC protocol and frame format; different speeds: 2 Mbps, 10 Mbps, 100 Mbps, ..... IP datagram forwarded from campus network into comcast network, routed ( tables ...
5: DataLink Layer. 5-3. A day in the life: scenario. Comcast network. 68.80.0.0/13. Google's network. 64.233.160.0/19. 64.233.169.105. web server. DNS server.
understand principles behind data link layer services: error detection ... limo: Princeton to JFK; plane: JFK to Geneva; train: Geneva to Lausanne. tourist = ...
computing examples: virtual memory, virtual devices. Virtual ... ARPAnet; data- over-cable networks; packet satellite network (Aloha); packet radio network.
... hard in others (wireless); CSMA/CD used in Ethernet; CSMA/CA used in 802.11 .... cheap $20 for 100Mbs! first widely used LAN technology; Simpler, cheaper .... But individual segment collision domains become one large collision domain ...
7.3 voice-over-IP. 7.4 protocols for real-time conversational applications. 7.5 network support for multimedia. 7-3. Multmedia Networking. Multimedia: audio. 7- 4.
wired links; wireless links; LANs ... widely used in practice (802.11 WiFi, ATM) ... Ethernet; upstream HFC (hybrid fiber-coaxial cable); 802.11 wireless LAN ..... Identifies a segment of a path for a flow (or bundle of flows, called virtual path VP) , ...
network-layer address; used to get datagram to destination IP subnet ... In ARP table at source, find MAC address E6-E9-00-17-BB-4B, etc .... Link layer device.
trip from Newark to San Jose ... Internet checksum (review). Sender: .... If frame length can be arbitrarily small, then the cable length must be very short. Thus ...
... re-route flows quickly if link fails: pre-computed backup paths (useful for VoIP) ... e-business (e.g. Amazon); content-servers (e.g., YouTube, Akamai, Apple, .... IP datagram forwarded from campus network into comcast network, routed ( tables ...