With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnsExtOutListIndex
cns Ext Out List Index
1.3.6.1.4.1.9.9.761.1.1.4.1.1
An index that uniquely represents an entry in this table. This index is assigned arbitrarily by the clock selection process and may not be persistent across reboots.
Back to CISCO-NETSYNC-MIB MIB page.
IPHost Network monitor allows you to monitor cnsExtOutListIndex 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.