With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cIsnsRegPortalScnPortType
Cisco iSNS Registered Portal Scn Port Type
1.3.6.1.4.1.9.10.116.1.1.7.2.1.1.10
The port type for the SCN Port, either UDP or TCP, as defined in the iSNS Specification [iSNS].
Back to CISCO-IETF-ISNS-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cIsnsRegPortalScnPortType on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.