CCNP practical studies: troubleshooting by Donna L. Harrington

By Donna L. Harrington

Designed for aspiring CCNP and CCIE(r) pros, this critical lab advisor builds on Cisco(r) Internetwork Troubleshooting (CIT) subject matters that organize you for the CCNP Troubleshooting examination. filled with sensible routines that get you prepared for demanding situations at the activity, CCNP useful experiences: Troubleshooting supplies an part over the contest via realworld program of LAN and WAN issues.

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Do you map (link-state routing protocols) or do you just stop at the gas stations along th (distance vector routing protocols)? Either way, your car or other form of transportation (routed protocol s problem-isolation methods to resolve Trouble hop-by-hop Tickets IP or Use IPX)instructor-developed carries you (the data) and any upper-layer instructions (headers) to your destinatio router strips off the old framing (Layer 2 packaging) and re-encapsulates the packet for the outbound inter "Sniff" to spot IP network issues according tothe thewire destination address in the data packet header.

TCP is connection-oriented, which means the host must establish a logica connection, such as a 3-way handshake, before communications can occur. Flow control occurs through windowing, and TCP is reliable in that it uses acknowledgements (acks) and negative acknowledgements (n UDP is connectionless, which means it does not require an established connection before communications c occur. It is unreliable at the Transport Layer, which means that the reliability is left up to the Application La • Table of Contents TCP is like the certified mail protocol; whereas, UDP is like the regular mail protocol.

CCNP Practical Studies: Troubleshooting ByDonna L. Harrington Publisher: Cisco Press Pub Date: April 04, 2003 Table 1-1. org Cobol Hands-on practice for the CCNP Troubleshooting exam with Fortran TCP/IP, LAN, and WAN trouble tickets based on Cisco Internetwork Troubleshooting (CIT) topics. org application of LAN and WAN topics. org [*] LLC = Logical Link Control TCP/IP and OSI examples of nonproprietary open standards that are widely used today. • Tableare of Contents Standards are wonderful things; that's why we have so many.

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