UNIT 6 SEMINAR Unit 6 Chapter 7 and 8, plus Lab 12 Course Name – IT482 Network Design Instructor – David Roberts – Office Hours: Tuesday 9:00 PM ET and Thursday 11:00 PM ET

UNIT 5 REVIEW Covered last week in Seminar Chapter 6 Addressing and Routing Architecture Addressing Fundamentals Routing Fundamentals Addressing Mechanisms Classful Addressing, Subnetting, Variable-Length Subnetting (VLSM), Supernetting, Private IP Addressing and Network Address Translation (NAT) Routing Fundamentals Establishing routing flows, Identifying and Classifying Routing Boundaries and Manipulating Routing Flows Addressing Strategies Routing Strategies Architectural Considerations Internal and External Relationships

UNIT 6 - CHAPTER 7 Network Management Architecture Network 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 Functions I.The transport of management information across the system II.The management of NM information elements. Managing Elements and Transporting Management Data

UNIT 6 - CHAPTER 7 Four Categories of NM Tasks Monitoring for event notification Monitoring for trend analysis and planning Configuration of network parameters Troubleshooting the network.

UNIT 6 - CHAPTER 7 Network Devices and Characteristics End-to-end characteristics – measured across multiple network devices in the path of one or more traffic flows Per-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 Mechanisms Protocols – examples: simple network management protocol (SNMP) common management information protocol (CMIP) including CIMP over TCP/IP (CMOT) SNMP – commands get, get-next, set and trap MIBs – management information bases for SNMP SNMP – used in monitoring, instrumentation and configuration mechanisms

UNIT 6 - CHAPTER 7 Architectural Considerations FCAPS – 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 management Scaling network management traffic Checks and balances Managing network management data MIB selection Integration of OSS (operations support systems)

UNIT 6 - CHAPTER 8 Performance Architecture How 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 Monitors Spiceworks SNMP Network Management Tool Inventory of all your network devices & their details Create an accurate network map of your devices Use SNMPv3 to securely connect to network devices Receive alerts when printer ink or toner is getting low SNMP Monitoring With PRTG Network Monitor Test 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 Solarwinds SolarWinds 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.

UNIT 6 - CHAPTER 8 Developing Goals for Performance Are 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 Mechanisms Quality of Service (QoS) – determining, setting and acting upon priority levels of traffic flows – including MPLS, ToS, CIR Resource Control – prioritization, traffic management, scheduling and queuing Service-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.