Routed access

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  • This document provides design guidance for implementing a routed (Layer 3 switched) access layer using EIGRP or OSPF as the campus routing protocol. It is an accompaniment to the hierarchical campus design guides, Designing a Campus Network for High Availability and High Availability Campus Recovery Analysis, and includes the following sections

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  • Offers hierarchy—each layer has specific role • Modular topology—building blocks • Easy to grow, understand, and troubleshoot • Creates small fault domains—clear demarcations and isolation • Promotes load balancing and redundancy • Promotes deterministic traffic patterns • Incorporates balance of both Layer 2 and Layer 3 technology, leveraging the strength of both • Can be applied to all campus designs; multilayer L2/L3 and routed access designs

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  • Công cụ Routing and Remote Access giúp chúng ta biến một máy tính cài HDH windows server trở thành một thiết bị có chức năng định tuyến. Thông qua bài Lab dưới đây chúng ta sẽ tìm hiểu và triển khai định tuyến trong mạng bằng công cụ routing and remote access.

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  • Routing is simultaneously the most complicated function of a network and the most important. Most knowledgeable people agree that networking and routing technologies have been around about 25 years. The concept of routing actually dates back to the late 1950s, when computing was still an arcane science in its infancy. Precious few organizations had a single computer, much less multiple computers that needed to be linked together. Internetworking, the interconnection of multiple computers, was still more of a futuristic vision than a reality.

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  • This book is about network policies and how to implement those policies using Cisco IOS access lists. I present a way to think about access lists and network policy, describe how access lists are built, and give examples of how to apply those access lists in different situations. Along the way, there are a number of sidebars and notes about concepts and information important to using access lists, and at the end of the book, there are appendixes with useful reference material.

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  • OSPF (Single Area OSPF). Purpose of Hello Packet: Discover OSPF neighbors & establish adjacencies, Advertise parameters on which routers must agree to become neighbors, Used by multi-access networks to elect a Designated Router and a Backup Designated Router.

    pdf71p thanhtung_hk 05-11-2010 64 24   Download

  • Remote Access As aforementioned, Windows Server 2003 implementation of the Routing and Remote Access Server (RRAS) is the next step in the evolution of multi-protocol routing and remote access services for the Microsoft Windows platform.

    pdf3p kisiheo 26-07-2010 88 21   Download

  • Routing là một khái niệm dùng để mô tả tiến trình chôn một tuyến (route) phù hợp trong một danh sách các tuyến. Mục đích của việc chọn tuyến là để chuyển các gói dữ liệu mạng đến đích mong muốn. Để thực hiện chức năng routing, người ta thường sử dụng thiết bị router. Tuy nhiên, cũng có thể sử dụng một máy tính chạy hệ điều hành hỗ trợ routing để thực hiện chức năng này.

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  • A BGP routing policy has been created using route maps. The command route-map TEST permit 10 is part of the configuration. What does the argument 10 indicate? It identifies the access list number to be used by the route map statement. It identifies the position of the route map in relation to other instances. It indicates the local preference to be set for routes that match the route map. It indicates the metric to be set for routes that match the route map. It specifies the route map to be used on autonomous system 10....

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  • This document provides design recommendations, configuration examples, and scalability test results for implementing a next-generation WAN for Voice and Video Enabled IPsec VPN (V3PN) based on a service provider WAN interface handoff using Ethernet at the enterprise campus and branch locations. This document provides the enterprise network manager with configuration and performance guidance to successfully implement or migrate to a WAN architecture using Ethernet as an access technology to a service provider network....

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  • Which two statements are true of EIGRP topology depth? (Choose two.) Topology depth should be limited to 15 routers. Redundant links and alternative paths can be used to reduce topology depth. Topology depth is the maximum hop count between any two EIGRP routers in the topology. Route summarization can reduce the convergence time in networks with large depth. Topology depth is the number of router hops necessary for traffic to reach from access layer to core layer. Topology depth refers to the total number of hops that information must travel to reach all EIGRP routers in the network....

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  • Mục tiêu của bài Lab để mô tả đặc tính hoạt động đa lớp (Multilayer) của dòng sản phẩm Catalyst 3550 của Cisco Access Layer Switch (ALSwitch) chia thành các Vlan1, Vlan 10, Vlan 20 phân phối cho từng nhóm người dùng.

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  • Internet Routing Architectures, Second Edition expands on the highly successful first edition, with new updates on BGP4 and current perspectives on internetworking routing architectures. This book is intended for any organization needing to build an efficient, reliable, enterprise network accessing the Internet. Its purpose is to make you an expert on integrating your network into the global Internet. It is written to address real routing issues, using real scenarios, in a comprehensive and accessible manner.

    pdf50p ken333 28-06-2012 47 11   Download

  • Upon completing this lesson, you will be able to: Configure legacy DDR, given a functioning remote access router and a physical ISDN connection Use show commands to identify the anomalies in the legacy DDR configurations, given a functioning remote access router and a physical ISDN connection Use debug commands to identify the anomalies in the legacy DDR configurations, given a functioning remote access router and a physical ISDN connection

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  • Link-State Routing Process 1. Each router learns about its own links, its own directly connected networks. (Interface is “up”) 2. Each router is responsible for meeting its neighbors on directly connected networks. (OSPF Hello packets) 3. Each router builds a link-state packet (LSP) containing the state of each directly connected link. (neighbor ID, link type, and bandwidth) 4. Each router floods the LSP to all neighbors, who then store all LSPs received in a database. Neighbors then flood the LSPs to their neighbors until all routers in the area have received the LSPs. 5.

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  • Enhanced Interior Gateway Routing Protocol (EIGRP)  Distance vector.  Classless routing protocol.  Released in 1992 with Cisco IOS Software Release 9.21.  Enhancement of Cisco Interior Gateway Routing Protocol (IGRP).  Both are Cisco proprietary.  Operate only on Cisco routers.The term hybrid routing protocol is sometimes used to define EIGRP.  Misleading, not a hybrid between distance vector and link-state  Solely a distance vector routing protocol.

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  • There are advantages and disadvantages to using any type of routing protocol.  Some of their inherent pitfalls, and.  Remedies to these pitfalls.  Understanding the operation of distance vector routing is critical to enabling, verifying, and troubleshooting these protocols.RIP: Routing Information Protocol originally specified in RFC 1058.  Metric: Hop count  Hop count greater than 15 means network is unreachable.  Routing updates: Broadcast/multicast every 30 seconds

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  • The first protocol used was Routing Information Protocol (RIP).  RIP still popular: simple and widespread support.  Why learn RIP?  Still in use today.  Help understand fundamental concepts and comparisons of protocols  such as classful (RIPv1) and classless (RIPv2).RIP is not a protocol “on the way out.”  In fact, an IPv6 form of RIP called RIPng (next generation) is now available.

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  • Note on Classful Routing Protocols, RIPv1 limitations  The first part of this presentation discusses the limitations of classful routing protocols such as RIPv1.  RIPv1 is used as an example, so we can see how RIPv2 a classless routing protocol does not have these same limitations.  Classful routing protocols have three major limitations:  Does not support discontiguous networks.  Does not support VLSM.  Does not support CIDR.  Instead of just “memorizing” these facts, we will demonstrate and “understand” why a classful routing protocol has these limitati...

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  • The structure of the routing table might seem obvious.  Help you verify and troubleshoot routing issues because you will understand the routing table lookup process.  You will know exactly what the Cisco IOS software does when it searches for a route.Notice that R3 also has a subnet that is disconnected, or discontiguous, from the network that R1 and R2 share.  The effects of this discontiguous subnet are examined later in this chapter when you look at the route lookup process....

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