artech house a professionals guide to data communication in a tcp ip world 2004 phần 3 pdf

... 189 B .3. 1 Point -to- Point Protocol (PPP) Frame 189 B .3. 2 X.25 Data Frame 189 B .3. 3 ATM Cell Structure 190 B .3. 4 AAL5 Frame Containing IP Datagram 190 B .3. 5 Frame Relay Frame with 2-Byte Addresses ... Formats 170 x Contents TLFeBOOK A Professional’s Guide to Data Communication in a TCP/ IP World E. Bryan Carne Artech House, Inc. Boston • London www.artechho...

Ngày tải lên: 14/08/2014, 13:20

... decapsulation, and the user data are said to be decapsulated. At each layer, the combination of data passed to the layer and the header (or header 32 Data Communication Application Presentation Session Transport Network Data ... Encapsulation and Decapsulation In descending the protocol stack, the overhead data added at each layer is placed in a header, or, in the cas...

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... token and the fields in a frame containing an IP datagram. The frame consists of an IEEE 802.5 header, an IEEE 802.2 LLC header, an IEEE 802 .3 SNAP header, the payload (IP datagram), and an IEEE ... Figure 3. 13 shows an FDDI frame that encapsulates an IP datagram. Intentionally, it is very similar to frames for IEEE 802 .3 and IEEE 802.5. Like them, when transporting IP dat...

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... 802 .3 Token Ring FDDI Preamble Variable 0×AA-AA -A A-AA-AA -A A-AA-AB 0×AA-AA-AA-AA- AA-AA-AA-AA No 0×AA-AA MAC Header Starting delimiter 1 byte No 0×AB JK JK Access control 1 byte No No Yes No Frame ... over link AG. Because frame 3 takes the path AGC, and frames 1 and 2 take the path AEFGC, frame 3 arrives at C ahead of frames 1 and 2. 4.2 Nonbroadcast Multiple Access Links 67 32 1...

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... in IPv4 and IPv6 datagrams. Encapsulating header Authentication header Original datagram D(1) IPSec authentication tunneling datagram D(2) ESP authentication ESP header ESP trailer Original datagram ... switch Hub/switch WAN E VLAN-unaware domain VLAN-unaware domain VLAN-unaware domain LAN LAN Figure 5.10 VLAN domains. TLFeBOOK Connecting a private network to the Internet has certain ad...

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... transport overhead to form a frame. The transport overhead contains data that monitors and manages the optical line between the originating and terminating SONET multiplexers. Payloads that originate from ... (SPE). The path overhead contains data that monitors and manages the electrical and optical connections between originat- ing and terminating multiplexers. To the SPE are added...

Ngày tải lên: 14/08/2014, 13:20

... modem operation and require modem retraining. During retraining, the modems are unable to transmit data. To make retraining as fast as possible, G.lite modems store up to 16 operating profiles. 8.1.2.8 ... reconstructed signal to a 4-kHz bandwidth. A. 4 .3 Passband Formats The sideband components of the passband signal carry the information contained in the baseband signal. A...

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... When added to the IP datagram, they form the IP frame. Data service unit Part of data circuit-terminating equipment (DCE) serving a digital line. Data terminal equipment A device that creates, ... The act of sharing data among devices. The act of transfer - ring data among data processing machines over communication links under the control of communication protocol(s...

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... beginning and ending of each IP datagram. Server A device that stores data, organizes and maintains databases, and delivers copies of data files to clients on demand. A process that stores and distributes ... Performance Engineering, Robert G. Cole and Ravi Ramaswamy Winning Telco Customers Using Marketing Databases, Rob Mattison WLANs and WPANs towards 4G Wireless, Ramjee Prasad a...

Ngày tải lên: 14/08/2014, 13:20