tailieunhanh - Essential SNMP, Second Edition

Simple Network Management Protocol (SNMP) provides a "simple" set of operations that allows you to more easily monitor and manage network devices like routers, switches, servers, printers, and more. The information you can monitor with SNMP is wide-ranging--from standard items, like the amount of traffic flowing into an interface, to far more esoteric items, like the air temperature inside a router. In spite of its name, though, SNMP is not especially simple to learn. | Help for System and Network Administrators Essential Douglas R. Mauro Kevin J. Schmidt O REILLY Network System Administration O REILLY Essential SNMP 7 E Essentia SNMP Second Edition is a practical guide for system and network administrators using the Simple Network Management Protocol to manage their servers and routers. It starts with the basics of SNMP and how it works covering technical elements such as OIDs MIBs community strings and traps. More importantly this book shows you how to use SNMP to keep track of what your network is doing. Essentia SNMP focuses on practical system and network administration how to configure SNMP agents and network management stations how to use SNMP to retrieve and modify variables on network devices and how to configure management software to react to traps sent by managed devices. Now in its second edition Essentia SNMP has been thoroughly revised and expanded and includes numerous Perl scripts to help you automate more of your management tasks. You ll find scripts for service monitoring techniques for SMTP POP3 HTTP and DNS a Perl-based SNMP agent switch port control usage of the Cisco Ping MIB a section on wireless access point WAP monitoring and a brand-new chapter on Java and SNMP. Essential SNMP is filled with practical examples of a variety of tools from popular commercial products such as HP s OpenView and Castle Rock s SNMPc to a rich variety of open source tools. You ll find a new chapter on RRDtool and Cricket a new appendix on open source network management systems and expanded coverage of SNMPv3. Essential SNMP is the book you need to gel a handle on your network and manage it effectively. Essential SNMP gives you the system administrator s perspective on SNMP what it is and more importantly practical examples of how to integrate SNMP into the administrator s toolset. If you need to know about user activity errant core files and misbehaving printers SNMP will do all the heavy lifting for you. Essential SNMPg res you