CT 1306 Communication Networks Management Lab Lecture 1

CT 1306 Communication Networks Management Lab Lecture 1 Dr. Mahmood Abduldayem Edited By Maysoon Al. Duwais 1

Communication Networks Management � Communication Networks Management: Refers to the activities, methods, procedures, and tools related to operate, manage, maintain, and control resources for network systems. it includes the following responsibilities: Maintaining the stability of the network performance (and the services provided by the network) to work smoothly. 2. Monitoring the network to discover problems as soon as possible, before users are affected. 1. 2

Communication Networks Management 3. Tracking resources in the network and how they joined the network. 4. Doing all the necessary procedures to keep the network under control. 5. Fixing and developing the network continuously to maintain its performance. For example: ▪ ▪ Exchanging old network devices. When new devices (such as Switch) is added to the network. 3

Communication Networks Management 6. Implementing corrective and preventive procedures to increase the network performance, such as: ▪ modifying the control parameters (Configuration) of network device. controlling resources in the network to support a particular service. 7. ▪ Example: setting up the network so that users can have new service such as voice. 4

Protocols used in NM � SNMP(v 1, v 2, v 3) Simple Network Management Protocol � ICMP Internet Control Message Protocol Ping , traceroute � ARP/RARP Address Resolution Protocol/ (Reverse ARP) � TCP Socket � Telnet/SSH � HTTP+XML

"Simple Network Management Protocol" � SNMP is an acronym for "Simple Network Management Protocol" � SNMP is one of the seventh layer (Application Layer) protocols, the layer that is used by the network management system to monitor devices connected to the network. � SNMP is part of the Internet protocol package as defined by the IETF. 6

Common Network Problems q Loss of connectivity (Link, Node, Interface) q Duplicate IP address (Procedural) q Intermittent problems A system interface problem in a shared medium q Network configuration issues q Non-problems The cause of failure is a mystery. (Turn off , Turn on) q Performance problems The cause of long network delay and increasing the response time

Top-down View of NM functions

NM Functional

NM Functional Requirements � Fault Management detection, isolation and correction of abnormal operations � Configuration Management identify managed resources and their connectivity, discovery � Accounting Management keep track of usage for charging � Performance Management monitor and evaluate the behavior of managed resources � Security Management allow only authorized access and control FCAPS

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Communication Networks Management � Functions that are implemented as part of the network management include: Monitoring, planning , allocation, deployment, coordination of network resources Network planning, Directing the traffic of the data to balance the load of data in the network. Encryption key distribution. Setting management. Fault management Security management Performance management Bandwidth management 12

Gathering data for Network Management � The data are collected to manage the network using different methods as follows: Software agents installed on infrastructure of the network Artificial monitoring programs that simulate transactions Activity log files Spyware Sniffer Real monitoring by the user. � Today performance management has become an essential responsibility of the information technology (IT) team. Note: network management does not include terminal users. 13