1. When a router is first powered on‚ it completes a four-step initialization process: 1. Preforming a power-on self test (POST) 2. Loading a bootstrap program 3. Loading an IOS 4. Loading a configuration file The last three of these steps require the router to copy the files into RAM. Normally‚ most routers load an IOS image that is stored in flash memory and an initial configuration stored in NVRAM. 2. Routers use the following logic‚ in order‚ to attempt to load an IOS: 1. Load
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Identify a router as a computer with specialised hardware and operating system designed for routing Give a router a basic configuration including IP addresses Routing tables Router activities – finding the best paths and switching packets Connect networks together Find best routes Switch packets from one network to another Do this efficiently 24/7 Provide security by permitting or denying specified types of packet Provide quality of service by prioritising
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true about router? a. routers enable different IP networks or IP subnets to communicate with each other. c. path selection is one of the main functions of a router. e. routers have a central processing unit and memory. 4. Which of the following are main components of a router? a. ROM b. Flash memory e. RAM 5. Which of the following statements describe the function of RAM in a router? c. RAM stores the current configuration information. e. RAM stores routing tables for the router. 6.
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contain at least one allow statement‚ or no traffic will be allowed. When you remove an access list statement‚ the entire access list is deleted. Use Notepad or another text editor to construct and modify access lists‚ then paste the list into the router console. A single access list can be applied to multiple interfaces. Extended access lists include a protocol designation (such as IP‚ TCP‚ or UDP). Use IP to match any
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1st Step Basic router configuration commands Continue with configuration dialog? [yes/no]: n Press RETURN to get started! Router>en // to enter from USER mode to Privilege mode use this command (en = enable) & press enter Router#conf t // to enter from PRIVILAGE mode to CONFIGURATION mode use this command (en = enable) & press enter Enter configuration commands‚ one per line. End with
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routing protocols are used. Forwarding the packets is based on the destination address. So routing lookups are performed on every node that the packet is forwarded along the path. This routing lookup on each node is a time consuming process. Every router should have the total internet routing information which contains millions of routes. So some requirements are aroused and need to develop a new technology which should satisfy some features. 1. Single infrastructure which supports multiple
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ITM 440-‐540 Introduc0on to Data Networking and the Internet 03/03/12 1 Router Architectures • There are 3 steps a router must follow to process and forward a packet to the next hop. – Check an incoming packet for errors and other parameters – Look up the des0na0on address in a forwarding
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Section 18 Section 19 Section 20 The Routing Table Static vs. Dynamic Routing Classful vs. Classless Routing Configuring Static Routes RIPv1 & RIPv2 IGRP EIGRP OSPF Router Components Introduction to the Cisco IOS Advanced IOS Functions Introduction to Networking OSI Reference Model Ethernet Technologies Hubs vs. Switches vs. Routers STP IPv4 Addressing and Subnetting TCP
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www.CareerCert.info Chapter 1: Planning for Complex Networks............4 Chapter 2: EIGRP ......................................................18 Chapter 3: OSPF .......................................................40 Chapter 4: Optimizing Routing................................61 CCNP ROUTE 642-902 Quick Reference Chapter 5: Path Control ...........................................76 Chapter 6: BGP and Internet Connectivity............83 Chapter 7: Branch Office Connectivity
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protocols supporting the IPv4 platform haven been modified to support the IPv6 addressing. This paper compares the link-state routing protocols OSPFv3 and IS-IS in IPv6 environment for parameters like network and router convergence‚ network and router activity and throughput using OPNET Modeler. Keywords: OSPF‚ OSPFv3‚ IS-IS‚ IPv4‚ IPv6‚ Convergence and Throughput LIST OF FIGURES Page Fig a: Network Example of two Autonomous Systems (AS)…………………………………….5 Fig b: OSPF
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