Module 1- Scalable Networks pdf

© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialBSCI 1 BSCI Module 1 Lesson 2 - Scalable Networks Scalable Network Design © 2008 Cisco Systems, Inc. All rights reserved.BSCI 2 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Objectives  Cisco PPDIOO  Describe scalable network design  Five Characteristics of a Scalable Network  Making the Network Reliable and Available  Making the Network Responsive  Making the Network Efficient  Making the Network Adaptable  Making the Network Accessible But Secure © 2008 Cisco Systems, Inc. All rights reserved.BSCI 3 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Cisco PPDIOO © 2008 Cisco Systems, Inc. All rights reserved.BSCI 4 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Using the Design Methodology under PPDIOO  Three steps in the design methodology: 1. Identify the customer requirements. 2. Characterize the existing network and sites. 3. Design the topology and network solutions. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 5 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Identifying Customer Requirements © 2008 Cisco Systems, Inc. All rights reserved.BSCI 6 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Characterizing the Existing Network and Sites  Gathering as much information about the network as possible.  Auditing and analyzing the network to add detail.  Developing a summary report describing the health of the network. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 7 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Designing the Topology and Network Solutions  Use top-down design to for smaller, more manageable steps.  Define the scope of a network design  Develop the design by module  Document the design, including implementation and migration plans  Verify the design. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 8 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Scalable Network Design  The ECNM breaks the complex problem of network design into smaller, more manageable problems. Each level, or tier in the hierarchy, addresses a different set of problems. This helps the designer optimize network hardware and software to perform specific roles. For example, devices at the lowest tier are optimized to accept traffic into a network and pass that traffic to the higher layers. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 9 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Scalable Network Design  Layered models are useful because they facilitate modularity. Devices at each layer have similar and well-defined functions. This allows administrators to easily add, replace, and remove individual pieces of the network. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 10 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Five Characteristics of a Scalable Network  Although every large internetwork has unique features, all scalable networks have essential attributes in common. A scalable network has five key characteristics: –Reliable and available –Responsive –Efficient –Adaptable –Accessible but secure  The Cisco IOS offers a rich set of features that support network scalability. [...]... Accessible But Secure BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 15 CCNP – BSCI Bachkhoa Networking Academy Self Check 1 Name 5 characteristics os A Scalable Networks 2 Name 3 characteristics that Available and Reliable Network Support 3 What is the main technique to meet Network Responsive? 4 How to make an efficient network? 5 What is Network Adaptable?... www.bkacad.com 11 CCNP – BSCI Bachkhoa Networking Academy Making the Network Responsive  Users expect network resources to respond quickly, as if network applications were running from a local hard drive  Networks must be configured to meet the needs of all applications, especially time delay-sensitive applications, such as voice and video  Cisco IOS addresses priority and responsiveness issues through...CCNP – BSCI Bachkhoa Networking Academy Making the Network Reliable and Available  Support for scalable routing protocols: OSPF, EIGRP, ISIS  Support for alternate paths: Core links should always be redundant EIGRP actually maintains a database of all alternate paths if the primary route is lost . 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialBSCI 1 BSCI Module 1 Lesson 2 - Scalable Networks Scalable Network Design © 2008 Cisco Systems, Inc. All rights reserved.BSCI 2 CCNP. www.bkacad.com Five Characteristics of a Scalable Network  Although every large internetwork has unique features, all scalable networks have essential attributes in common. A scalable network has five key. mạng Bách Khoa - www.bkacad.com Objectives  Cisco PPDIOO  Describe scalable network design  Five Characteristics of a Scalable Network  Making the Network Reliable and Available  Making