With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cIsnsClntCfgSrvrTcpPort
Cisco iSNS Clnt Configure Srvr Tcp Port
1.3.6.1.4.1.9.10.116.1.2.2.1.4
Indicates the TCP port the configured iSNS server uses. The well known TCP port for iSNSP is 3205. If the value is 0 then TCP is not supported by the server.
Back to CISCO-IETF-ISNS-MGMT-MIB MIB page.
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