With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoRptrPortIllegalAddrFirstHeard
cisco Rptr Port Illegal Addr First Heard
1.3.6.1.4.1.9.9.22.1.1.1.12
This is the time stamp for the very first time when the current illegal source address was detected on the port. The time stamp is given by the value of MIB-II's sysUpTime at which this occurrence happens. If no illegal source address is heard on the port, this value is set to 0.
Back to CISCO-REPEATER-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoRptrPortIllegalAddrFirstHeard on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.