Unit 6 Seminar

Unit 6Unit 6Chapter 7 and 8, plus Lab 12 Chapter 7 and 8, plus Lab 12

Course Name – IT482 Network DesignInstructor – David Roberts Email – droberts@kaplan.eduOffice Hours: Tuesday 9:00 PM ET and Thursday 11:00 PM ET

UNIT 5 Review

Covered last week in SeminarChapter 6 Addressing and Routing Architecture

Addressing FundamentalsRouting FundamentalsAddressing Mechanisms

Classful Addressing, Subnetting, Variable-Length Subnetting (VLSM), Supernetting, Private IP Addressing and Network Address Translation (NAT)

Routing FundamentalsEstablishing routing flows, Identifying and Classifying Routing

Boundaries and Manipulating Routing FlowsAddressing StrategiesRouting StrategiesArchitectural Considerations

Internal and External Relationships

UNIT 6 - Chapter 7

Network Management ArchitectureNetwork Management – a set of functions to control, plan, allocate, deploy, coordinate, and monitor network resources.

Multiple layers: Business Management, Service Management, Network Management, Element Management, Network-Element Management

Areas addressed: What NM protocol to use, will asset management be used, will monitoring take place from a single location, will testing be required for service-provider compliance, etc.

UNIT 6 - Chapter 7

NM Divided into Two Basic FunctionsI. The transport of management information across

the systemII. The management of NM information elements.

Managing Elements and Transporting Management Data

UNIT 6 - Chapter 7

Four Categories of NM Tasks

Monitoring for event notificationMonitoring for trend analysis and planningConfiguration of network parametersTroubleshooting the network.

UNIT 6 - Chapter 7

Network Devices and CharacteristicsEnd-to-end characteristics – measured across multiple network devices in the path of one or more traffic flowsPer-link/per-network and per-element characteristics – specific to the type of element or connection between elements being monitored

UNIT 6 - Chapter 7

Network Management MechanismsProtocols – examples: simple network management protocol (SNMP) common management information protocol (CMIP) including CIMP over TCP/IP (CMOT)

SNMP – commands get, get-next, set and trapMIBs – management information bases for SNMP

SNMP – used in monitoring, instrumentation and configuration mechanisms

UNIT 6 - Chapter 7

Architectural ConsiderationsFCAPS – Fault management, configuration management, accounting management, performance management and security management

In-band management – when traffic flows for network management follow the same network paths as traffic flows as for users and their applications

Out-of-band management – when different paths are provided for network management

Centralized, distributed and hierarchical managementScaling network management trafficChecks and balancesManaging network management dataMIB selectionIntegration of OSS (operations support systems)

UNIT 6 - Chapter 8

Performance ArchitectureHow user, application, device and (existing) network requirements for

performance (capacity, delay, and RMA) will be met within the planned network A performance architecture is the set of performance mechanisms to configure, operate, manage, provision and account for resources in the network that support traffic flows.

UNIT 6 - Chapter 7

SNMP MonitorsSpiceworkshttp://www.spiceworks.com/SNMP Network Management Tool

Inventory of all your network devices & their detailsCreate an accurate network map of your devicesUse SNMPv3 to securely connect to network devicesReceive alerts when printer ink or toner is getting low

SNMP Monitoring With PRTG Network Monitorhttp://www.paessler.com/prtgTest SNMP Monitoring for Free PRTG Network Monitor combines essential network diagnostic tools. Download either the freeware or the fully functional 30 day trial

UNIT 6 - Chapter 7

SolarwindsSolarWinds Standard Toolset - monitor & alert in real time on network availability & health with tools including Real-Time Interface Monitor, SNMP Real-Time Graph, & Advanced CPU Load.

http://www.solarwinds.com

UNIT 6 - Chapter 8

Developing Goals for PerformanceAre the performance mechanisms necessary?What are we going to solve, add or differentiate?Are performance mechanisms sufficient?

Ex: Should we implement QoS? Does the customer (or our company) have the staff to maintain performance mechanisms?

UNIT 6 - Chapter 8

Performance MechanismsQuality of Service (QoS)

– determining, setting and acting upon priority levels of traffic flows – including MPLS, ToS, CIRResource Control – prioritization, traffic management, scheduling and queuingService-Level

Agreements (SLAs) – formal contracts

Policies – high-level statements or rules about network resource allocation

Lab 12

Lab 12 in Experiments Manual

Firewalls and VPN Network Security and Virtual Private Networks

The objective of this lab is to study the role of firewalls and VPNs in providing security to shared public networks.