With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cddServerPortUrlString
Cisco Distributed Director Server Port Url String
1.3.6.1.4.1.9.9.197.1.3.2.1.6
Specifies the URL that is used by the Distributed Director to determine remote server's availability by connecting to the port of the server and attempting to retrieve a web page.
Back to CISCO-DIST-DIRECTOR-MIB MIB page.
IPHost Network monitor allows you to monitor cddServerPortUrlString on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.