With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
adslAtucChanPerfInvalidIntervals
ADSL Atuc Chan Performance Invalid Intervals
1.3.6.1.2.1.10.94.1.1.10.1.6
The number of 15 minute intervals in which no valid data is available.
Back to ADSL-LINE-MIB MIB page.
IPHost Network monitor allows you to monitor adslAtucChanPerfInvalidIntervals on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.