With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
llcPortStatsRemoteBusies
llc Port Stats Remote Busies
1.3.6.1.3.51.1.1.3.1.7
This object reflects the total number of times that the adjacent (i.e. remote) link stations on this port have entered a busy state (RNR). This object is initialized to zero when the port is created.
Back to ibm-llc MIB page.
IPHost Network monitor allows you to monitor llcPortStatsRemoteBusies on IBM device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring IBM Flex systems right now.