With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoDlswTConnOperTable
cisco Data Link Switching T Connection Operation Table
1.3.6.1.4.1.9.10.9.1.2.3
A list of transport connections. It is optional but desirable for an implementation to keep an entry for some period of time after the transport connection is disconnected. This allows a network management station to capture additional useful information about the connection, in particular, statistical information and the cause of the disconnection.
Back to CISCO-DLSW-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoDlswTConnOperTable 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.