With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alAddressStatsGrpCurrAvailAddresses
Address Statistics Group Current Available Addresses
1.3.6.1.4.1.3076.2.1.2.19.3.1.5
Total number of addresses currently available.
Back to ALTIGA-ADDRESS-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alAddressStatsGrpCurrAvailAddresses 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.