With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cIsnsClntCfgSrvrTable
Cisco iSNS Clnt Configure Srvr Table
1.3.6.1.4.1.9.10.116.1.2.2
iSNS Address table for direct user configuration. If configured address server discovery is being used, defined as cIsnsClntInstPrmryDiscMthd or cIsnsClntInstScndryDiscMthd being set to 'cfgdServerList', this table provides the list of addresses to check for an iSNS Server. The number of rows is dependent on the number of addresses that the user configures.
Back to CISCO-IETF-ISNS-MGMT-MIB MIB page.
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