With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cntpSysLeap
cntp Sys Leap
1.3.6.1.4.1.9.9.168.1.1.1
Two-bit code warning of an impending leap second to be inserted in the NTP timescale. This object can be set only when the cntpSysStratum has a value of 1.
Back to CISCO-NTP-MIB MIB page.
IPHost Network monitor allows you to monitor cntpSysLeap 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.