With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
iscsiIfNumDiscovConnections
iscsi If Num Discov Connections
1.3.6.1.4.1.9.9.317.1.1.9.1.21
The number of discovery iscsi connections.
Back to CISCO-ISCSI-GW-MIB MIB page.
IPHost Network monitor allows you to monitor iscsiIfNumDiscovConnections on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.