The Illustrated Network- P40 docx
The Illustrated Network- P40 docx
... routers, or ASBRs, run OSPF on the internal links within the AS, but not on the external links to the other AS (this is where we’ll run the EGP). The relationship between the OSPF use of a reference ... a way to cut down on the size of the link-state database, the amount of information fl ooded, and the time it takes to run the SPF algorithm, at least on areas other than the special backbone ... structure for the IPv6 Next Hop, but use a special value of the last fi eld (the Metric) to indicate that the fi rst 16 bytes in the route entry was an IPv6 Next Hop, not the route itself. The value...
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The Illustrated Network- P1 docx
... and Interfaces 27 Encapsulation 28 The Layers of TCP/IP 30 The Physical Layer 30 The Data Link Layer 32 The Network Layer 35 The Transport Layer 38 The Application Layer 41 Session Support ... xxiiiAbout the Author xxxPART I Networking BasicsCHAPTER 1 Protocols and Layers 3 The Illustrated Network 7 Remote Access to Network Devices 8 File Transfer to a Router 10 CLI and GUI 11 Ethereal ... in the United States08 09 10 11 12 10 9 8 7 6 5 4 3 2 1CHAPTER 2 TCP/IP Protocols and Devices 47 Protocol Stacks on the Illustrated Network 50 Layers, Protocols, Ports, and Sockets 51 The...
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The Illustrated Network- P2 docx
... Simple Network Management Protocol 609 SNMP Capabilities 612 The SNMP Model 616 The MIB and SMI 618 The SMI 618 The MIB 620 RMON 622 The Private MIB 622 SNMP Operation 623 SNMPv2 Enhancements ... 390 BGP and the IGP 391 Other Types of BGP 392 BGP Attributes 393 BGP and Routing Policy 395 BGP Scaling 395 BGP Message Types 396 BGP Message Formats 397 The Open Message 397 The Update ... BGP as a Routing Protocol 379 Confi guring BGP 382 The Power of Routing Policy 384 BGP and the Internet 386 EGP and the Early Internet 386 The Birth of BGP 387 BGP as a Path-Vector Protocol...
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The Illustrated Network- P5 docx
... and the fi le listing of the default directory on the router, which is /var/home/remote (the router uses the Unix fi le system). The listing in the lower right section is the contents of the ... look at the IETF in detail shortly. The Internet uses more than protocol standards developed by the IETF. The following organizations are the main ones that are the sources of these other standards.Institute ... other Internet organizations. The IETF is neither strictly a de facto nor de jure standards organization: There is no force of law behind Internet standards; they just don’t work the way they...
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The Illustrated Network- P21 docx
... link at 155 Mbps and the LAN runs at 100 Mbps. There is also no other traffi c on the network, so the transfer rate is totally dependent on the ability of the host to fi ll the pipe from server ... fragments, and the other is the lack of knowledge on the part of a destination of the reassembled datagram size. Let’s look at the destination host reassembly process to explore the “performance ... Obviously, the 4500-byte packet must be fragmented across three Ethernet frames to reach the destination host.Figure 6.4 shows the portions of the IP packet data and the values of the frag-mentation...
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The Illustrated Network- P23 docx
... others do not fall neatly into either category. The structure of the fi elds following the checksum depends on the type of ICMP message. These two formats are shown in Figure 7.5.Note that the ... pairs, and the sequence numbers help sort out queries sent by the same process (the process identifi er, the PID, is often the ICMP Query identifi er in Unix systems). The suite of the 40 ICMP ... wincli2. We looked at the details of the IPv6 header in the last chapter. Note that the hop limit is 128 in the reply, and that the protocol number for ICMP is 0x3a (58 decimal). THE ICMP MESSAGE...
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The Illustrated Network- P41 docx
... password, but the use of AuType = 2 authentication gives the authentication fi eld the structure shown in the fi gure. In this case, the Key ID identifi es the secret key and authentication algorithm ... create the message digest, the Authentication Data Length specifi es the length of the message digest appended to the packet (which does not count as part of the packet length), and the Crypto-graphic ... one selected area (the backbone), connecting areas adjacent to the central area with L1/L2 routers, and making the other the routers in the other areas L1-only routers. The IS–IS attraction...
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The Illustrated Network- P78 docx
... (CSRC) matching the count are not used. The VoIP RTP header adds 8 bytes to the voice stream. The format of the payload in the RTP data fi eld is determined by the values in the categories listed ... connection to the server), and the RTP packets carrying the voice bits (and the RTCP packets with status information), there are other control packets that serve to remind us that we are not in the ... packets The call status packets trace the progress of the call. (Is the other phone ringing? Did someone answer?)Q.931 signaling packets—These are not strictly H.323 signaling packets. Q.931 is the...
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The Illustrated Network- P3 ppsx
... chapters on top of the printer bin, and he began reading it. When I came to retrieve the printout, he was fascinated by the sample chapters. He wanted the book then and there. And as we talked, ... book is a bit of a synthesis of the written and the seen. It attempts to give the reader the opportunity to see common tasks in a real, work-ing, hands-on environment of the proper size and scale, ... actually a synthesis of the fi rst two protocols that launched the Internet in its infancy, the Transmission Control Protocol (TCP) and the Internet Protocol (IP), which of course, allowed the transmission...
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The Illustrated Network- P4 pdf
... race across the Internet. A great deal of the discussion will revolve around the TCP/IP protocol suite, the protocols on which the Internet is built. The network that will run these protocols ... telecommunications context. There is a link to the global Internet and to a home-based wireless LAN as well. The home offi ce link uses digital Major Parts of the Illustrated Network The Illustrated Network ... Ace ISP on the West Coast and Best ISP on the East Coast with Gigabit Ethernet links (more on links in the next chapter). The two ISPs link to each other directly and also link to the “global...
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