With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwDhcpStatisticsEntry
Cisco's ASN Gateway Dhcp Statistics Entry
1.3.6.1.4.1.9.9.638.1.3.2.1.1
ASN-GW DHCP statistics entry.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwDhcpStatisticsEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.