Symptom 6: Displayed name of an LPAR in the OSA LPARs workspace does not map to the correct data

This problem has two dimensions: conflicting recommendations and how Mainframe Networks calculates the OSA LPAR value.

Contradictory recommendations

When users set up their OSA LPARs, they commonly rely on two sources of information: However, the recommendations in these guides are inconsistent.

How the Mainframe Networks monitoring agent calculates OSA LPAR assignments

The Mainframe Networks product relies on two sources of information to calculate the values that appear in the OSA LPARs workspace:
  • Data that is returned from a DIAGNOSE 204 command return the LPAR name and online status of each LPAR. Data for user-defined OSA LPARs are returned with UPID in the range of x'00' to x'3F' , resulting in 64 valid possible designations for OSA LPARS.
  • Data that is received from z/OS® SNMP Agent returns LPAR performance data along with two values which are used to correlate the data that is returned from the DIAGNOSE command.
    • Logical Channel Subsystem ID value between x'00' - X'03'
    • Multiple image facility (MIF) in the range of x'01' - x'0F'

How to resolve the issue

To properly report LPAR performance metrics in the OMEGAMON® for Mainframe Networks product, follow the guidelines outlined in the OSA LPAR designations recommended in the zSeries Partition Identification in an MCSS Processor. Specifically this document states the following when defining a UPID:
The first digit of the Logical Partition Identifier should be the CSSID and the 
  second digit of the Logical Partition Identifier be the MIF Image ID. 
Do not use these four designations because they do not map correctly to SNMP data when that data is returned:
  • x'00'
  • x'10'
  • x'20'
  • x'30'