With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alTelnetStatsSessionOutNetDropPackets
ALTIGA Telnet Statistics Session Out Net Dropped Packets
1.3.6.1.4.1.3076.2.1.2.11.2.1.13
The per session 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 alTelnetStatsSessionOutNetDropPackets on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.