With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
Cisco Distributed Director Server Available
The default availability metric value for all ports on the server. This value is used if the DFP reported availability value is found to have timed out, or has not been reported yet, or if the associated port for the virtual hostname has not been configured such that the correct availability can not be determined from the DFP information.
Back to CISCO-DIST-DIRECTOR-MIB MIB page.
IPHost Network monitor allows you to monitor cddServerAvail on Cisco device via the SNMP protocol.
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Easy monitoring of cddServerAvail with IPHost tools