With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cCasaAdminMcastPasswd
Cisco Casa Admin Multicast Passwd
1.3.6.1.4.1.9.9.122.1.3.1.1.2
Multicast password corresponding to this Multicast port. This is used to authenticate all control flows between this CASA Entity and its CASA Partner. Issuing a set on this object with a zero length string indicates that the password is not in effect. For security purposes, a get on this returns a zero length string.
Back to CISCO-CASA-MIB MIB page.
IPHost Network monitor allows you to monitor cCasaAdminMcastPasswd on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.