With IPHost Network Monitor you can run simple snmp requests against a IBM device in your network.
ibmMvsTcpConnRcvNxt
ibm Mvs Tcp Connection Rcv Nxt
Sequence number of next byte for TCP
Back to ibm_mainframe-Mvstcpip MIB page.
IPHost Network monitor allows you to monitor ibmMvsTcpConnRcvNxt 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.