Using the z/OS SNMP MIB to Solve Performance Problems
نویسنده
چکیده
THE new z/OS 1.2 TCP/IP stack introduces a greatly enhanced Simple Network Management Protocol (SNMP) Management Information Base (MIB) to allow the systems programmer to perform diagnostics for the TCP/IP stack and sessions. The SNMP MIB includes hundreds of variables to analyze the core Internet protocols: Internet Protocol (IP), Transmission Control Protocol (TCP), User Datagram Protocol (UDP), and Internet Control Message Protocol (ICMP), plus many other variables not available by any other means. Invaluable sources of data for monitoring z/OS performance and for troubleshooting include backlog for listener sessions or IP packets dropped for Communication Storage Manager (CSM) memory shortages. This article provides an introduction to SNMP, an overview of the z/OS MIB, discusses some interesting MIB tables, and concludes with several case studies where specific MIB variables can be used effectively for troubleshooting.
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