With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cDhcpv4IntNaks
Cisco IETF Dynamic Host Configuration protocol Interval Naks
1.3.6.1.4.1.9.10.122.1.3.6
The number of DHCPNACK (option 53 with value 6) packets sent during the reporting interval.
Back to CISCO-IETF-DHCP-SERVER-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cDhcpv4IntNaks on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.
