With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cPppoeSystemSessionClientMacAddress
Cisco Pppoe System Session Client Mac Address
1.3.6.1.4.1.9.9.194.1.5.1
The client MAC address that is referred as a part of the notification information. Example: cPppoeSystemSessionPerMACLimitNotif
Back to CISCO-PPPOE-MIB MIB page.
IPHost Network monitor allows you to monitor cPppoeSystemSessionClientMacAddress on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.