With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dsx1FarEndCurrentESs
dsx1 Far End Current E Ss
1.3.6.1.2.1.10.18.10.1.4
The number of Far End Errored Seconds.
Back to DS1-MIB MIB page.
IPHost Network monitor allows you to monitor dsx1FarEndCurrentESs 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.