With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwDhcpRequestPackets
Cisco's ASN Gateway Dhcp Request Packets
1.3.6.1.4.1.9.9.638.1.3.2.1.1.3
The number of DHCP Request packets transmitted by the DHCP relay in the ASN-GW to the DHCP server.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwDhcpRequestPackets on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.