With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cDhcpv4ServerClientSubnetMask
Cisco Dynamic Host Configuration protocol Server Client Subnet Mask
1.3.6.1.4.1.9.10.102.1.4.4.1.2
The subnet mask (DHCP option 1) provided to the client offered this address. The subnet, resulting from logically ANDing the subnet mask with the entry's IPv4 address, MUST be configured on this server and appear as a row in the cDhcpSubnetTable.
Back to CISCO-IETF-DHCP-SERVER-MIB MIB page.
IPHost Network monitor allows you to monitor cDhcpv4ServerClientSubnetMask on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.
