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IT 482
Network Design
Seminar 8
Dr Jeffrey A Robinson
Basic Info
Kaplan id – DrRobinson
Email – [email protected]
AIM ID – DrJARobinson
SKYPE – jarobinson15
Office Hours 8-10 Saturday (MST)
– 10am-12pm EST
Alternate email [email protected]
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: 978-0-12370480-1
Network Simulation Experiments Manual, Edition 4 - Emad
Aboelela ISBN: 978-0-12-373974-2
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
Vendor Evaluation
– Weighted Attribute Analysis
Design traceability
– Requirements traceability matrix 10.26
Unit 9
LANE – LAN Emulation http://www.cisco.com/en/US/docs/ios/11_3/switch/configuration/guide/xcovl
ane.html
MPOA – Multiprotocol over ATM http://www.cisco.com/en/US/docs/ios/12_0/switch/configuration/guide/xcmp
oa.html
NHRP – Next Hop Resolution Protocol http://www.cisco.com/en/US/docs/ios/12_4/ip_addr/configuration/guide/had
nhrp_ps6350_TSD_Products_Configuration_Guide_Chapter.html
NBMA - Non-broadcast multiple-access network
http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/White_pa
pers/frm_rlay.html
MPLS - Multiprotocol Label Switching (MPLS)
http://www.cisco.com/en/US/products/ps6557/products_ios_technology_ho
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 94-0035. 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 highperformance 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.)
http://www.networkworld.com/news/2010/101310-cisco-rivals.html
– Technology sites
http://www.informationweek.in/Internet/11-1228/Top_networking_trends_for_2012_Cisco.aspx
http://www.infostor.com/storage-management/6-storage-networkingtrends-to-watch-in-2012.html
http://www.networkworld.com/
– Best practices
Nw security, e.g.
http://www.computerworld.com/s/article/77625/Network_Security_Bes
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?