With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cIsnsRegPortalPortType
Cisco iSNS Registered Portal Port Type
1.3.6.1.4.1.9.10.116.1.1.7.2.1.1.4
The port type for this Portal, 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 cIsnsRegPortalPortType on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.
