With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cDhcpv4SrvResetTime
Cisco IETF Dynamic Host Configuration protocol Srv Reset Time
1.3.6.1.4.1.9.10.122.1.1.2
The time when the process supporting this server was last reinitialized. This indicates the time when a server reload or start was executed. At server startup this time is the same as cDhcpv4SrvStartTime.
Back to CISCO-IETF-DHCP-SERVER-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cDhcpv4SrvResetTime 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.