With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alTelnetStatsOutNetDropPackets
ALTIGA Telnet Statistics Out Net Dropped Packets
1.3.6.1.4.1.3076.2.1.2.11.1.11
The total number of Telnet packets destined for the network that were dropped during output processing since the system was booted.
Back to ALTIGA-TELNET-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alTelnetStatsOutNetDropPackets 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.