IT 482 Network Design Seminar 8 Dr Jeffrey A Robinson

Basic Info Kaplan id – DrRobinson – AIM ID – DrJARobinson SKYPE – jarobinson15 Office Hours 8-10 Saturday (MST) –10am-12pm EST Alternate

Logistics 10 weeks Seminars – Tuesdays 8-19m EST No groups, individual work only Quizzes

Text Book Textbooks Network Analysis, Architecture, and Design, 3rd Edition, 2007 James D. McCabe, Morgan Kaufmann Publishers ISBN: Network Simulation Experiments Manual, Edition 4 - Emad Aboelela ISBN: Software OPNET IT Guru Academic Edition. Download this free software from the OPNET website, as directed in Unit 2. Adobe Reader (available as a free download) to view PDF files Microsoft Word 2003 or later

Basic Course Agenda Unit 1: Social impact of networks Unit 2: Overview of Design Processes Unit 3: Requirements Analysis: Concepts and Process Unit 4: Flow Analysis and Network Architecture Unit 5: Addressing and Routing Architecture Unit 6: Network Management and Performance Architecture Unit 7: Security and Privacy Architecture Unit 8: Selecting Technologies for the Network Design Unit 9: Interconnecting Technologies within the Network Design Unit 10: What's Next? Note: there ARE no group activities in this course. All work and assignments will be completed individually. While collaboration is encouraged, each student shall turn in their own work.

IT482 readings Unit 1 - Web pages Unit 2 - Chapter 1 Unit 3 - Chapters 2 and 3 Unit 4 - Chapters 4 and 5 Unit 5 - Chapter 6 Unit 6 - Chapters 7 and 8 Unit 7 - Chapter 9 Unit 8 - Chapter 10 Unit 9 - Visit the links on course pager and review technologies such as LANE, MPOA, NHRP, NBMA, and MPLS. Unit 10 - None

Issues for this Seminar Unit 8 Chapter 10 Network Design Unit 9 Visit the following links and review technologies such as LANE, MPOA, NHRP, NBMA, and MPLS

Unit 8 Network Design –There is a tendency for engineers to jump to a technical solution without the discipline of analysis and architecture

Unit 8 Problems –Add hardware capriciously (growth unplanned) –Lack of documentation –Poor understanding of business demand –Poor understanding of performance issues (peak demand, changes over time, distribution and types of packets) –Lack of monitoring –Reactive response –Poor understanding of options and tradeoffs

Process Building analogy (page 389) Design Deliverables –Network blueprints –A component plan –Vendor, vendor equipment, and service-provider selections –Traceability (design decisions, architecture decisions, requirements, and problem statements) –Metrics for measuring design success!!! –Tools and monitoring plan –Security plan

Design Process - Architecture products Selected topology Selected technologies Equipment types/classes Supporting material (e.g., traceability diagrams) Architectural relationships Routing and addressing Security Network management Performance Others (as needed) All of these architecture products can be combined into the reference architecture for the project.

Vendor Evaluation –Weighted Attribute Analysis Design traceability –Requirements traceability matrix 10.26

Unit 9 LANE – LAN Emulation - ane.html ane.html ane.html MPOA – Multiprotocol over ATM - oa.html oa.html oa.html NHRP – Next Hop Resolution Protocol - nhrp_ps6350_TSD_Products_Configuration_Guide_Chapter.html nhrp_ps6350_TSD_Products_Configuration_Guide_Chapter.html nhrp_ps6350_TSD_Products_Configuration_Guide_Chapter.html NBMA - Non-broadcast multiple-access network pers/frm_rlay.html pers/frm_rlay.html pers/frm_rlay.html MPLS - Multiprotocol Label Switching (MPLS) me.html me.html me.html

Unit 9 Asynchronous Transfer Mode (ATM) – is a standard switching technique designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing,[1][2] and it encodes data into small, fixed-sized cells. This differs from approaches such as the Internet Protocol or Ethernet that use variable sized packets or frames LANE – LAN Emulation – –LANE is an ATM service defined by the ATM Forum specification LAN Emulation over ATM, ATM_FORUM This service emulates the following LAN-specific characteristics: Connectionless services Multicast services LAN media access control (MAC) driver services –LANE service provides connectivity between ATM-attached devices and connectivity with LAN-attached devices. This includes connectivity between ATM-attached stations and LAN-attached stations and also connectivity between LAN-attached stations across an ATM network.

Unit 9 NBMA - Non-broadcast multiple-access network –A non-broadcast multiple access network (NBMA) is a computer network to which multiple hosts are attached, but data is transmitted only directly from one computer to another single host over a virtual circuit or across a switched fabric. NBMA networks do not support multicast or broadcast traffic.

Unit 9 MPOA – Multiprotocol over ATM – –MPOA enables the fast routing of internetwork-layer packets across a nonbroadcast multi-access (NBMA) network. MPOA replaces multi-hop routing with point-to-point routing using a direct virtual channel connection (VCC) between ingress and egress edge devices or hosts. An ingress edge device or host is defined as the point at which an inbound flow enters the MPOA system; an egress edge device or host is defined as the point at which an outbound flow exits the MPOA system.

Unit 9 NHRP – Next Hop Resolution Protocol – –Next Hop Resolution Protocol (NHRP) is sometimes used to improve the efficiency of routing computer network traffic over Non-Broadcast, Multiple Access (NBMA) Networks MPLS - Multiprotocol Label Switching (MPLS) – –Multiprotocol Label Switching (MPLS) is a mechanism in high- performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table. The labels identify virtual links (paths) between distant nodes rather than endpoints.

Mini-lecture Weighted attribute analysis (eannie-meanie-mynie-mo) Staying ahead of change – –Vendors (CISCO, HPO, Juniper, Microsoft, IBM, etc.) – –Technology sites 28/Top_networking_trends_for_2012_Cisco.aspx trends-to-watch-in-2012.html – –Best practices Nw security, e.g. t_Practices t_Practices Virtualization, load balancing, monitoring and detection, automated responders, tuning,, etc.

Next week seminar Unit 1: Social impact of networks Unit 2: Overview of Design Processes Unit 3: Requirements Analysis: Concepts and Process Unit 4: Flow Analysis and Network Architecture Unit 5: Addressing and Routing Architecture Unit 6: Network Management and Performance Architecture Unit 7: Security and Privacy Architecture Unit 8: Selecting Technologies for the Network Design Unit 9: Interconnecting Technologies within the Network Design Unit 10: What's Next?