With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
ibmfrBRSCircuitMinQueue
ibmfr BRS Circuit Minimum Queue
1.3.6.1.4.1.2.6.119.4.4.4.1.3.1.3
The minimum queue length for each priority queue of each traffic class that is defined for a virtual circuit. This value overrides the min queue length specified for the interface and indicated by ibmfrBRSInterfaceMinQueue.
Back to ibm-ibmfrbrs MIB page.
IPHost Network monitor allows you to monitor ibmfrBRSCircuitMinQueue 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.