With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
ifDescr
if description
1.3.6.1.4.1.11.2.17.4.1.5.2.1.9
A textual string containing information about the interface. This string should include the name of the manufacturer, the product name and the version of the interface hardware/software.
Back to ibm_mainframe-Ifmib MIB page.
IPHost Network monitor allows you to monitor ifDescr on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM switches right now.