Book Image

Cacti 0.8 Network Monitoring

Book Image

Cacti 0.8 Network Monitoring

Overview of this book

Cacti is a network monitoring tool that provides graphic solutions to your everyday monitoring issues. It has a wide variety of features and misusing them can mean that you are not monitoring your network as closely as you think. This book takes you through all of the key features of Cacti and shows how to use them for maximum effectiveness. This book will teach you how to use Cacti effectively to monitor your network through its web interface leaving aside all the heavy chunks of code. You will be introduced to all the features of Cacti in an easy-to-understand format. This book introduces Cacti and goes through its complete installation and setup. After a quick look, it will teach you to use Cacti's amazing graph templating and user management features. You will learn to customize graphs and make them better looking and easier to understand. It will teach you to provide the paths to any external script or command using Cacti. Then it will take you through importing and managing new templates and also customizing them. Creating users and assigning permissions to them is the next step in this book. Towards the end, you will learn to take backups and restore the system.
Table of Contents (13 chapters)

What is SNMP?


SNMP stands for Simple Network Management Protocol. It is a component of the Internet Protocol Suite commonly known as TCP/IP, defined by Internet Engineering Task Force (IETF). Developed in 1988 to provide network-device-monitoring capability for TCP/IP-based networks, SNMP was approved as an internet standard in 1990 by the Internet Architecture Board (IAB) and has been in wide use since that time. More recently, Internetwork Packet Exchange (IPX)-based networks have added support for SNMP. Currently, most network equipment vendors provide SNMP support in their products.

In a typical SNMP usage, there are number of systems or devices to manage, and one or more systems managing them. A software component called an agent runs on every managed system or devices and sends information back to the managing system through SNMP. SNMP agents expose management data on managed systems or devices—typically: memory, configuration, process, route and many more. Protocol also allows active...