With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alPPPoEStatsIfRelaySessID
Statistics If Relay Session ID
1.3.6.1.4.1.3076.2.1.2.40.2.1.19
12 octets representing the Relay session if one exists.
Back to ALTIGA-PPPOE-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alPPPoEStatsIfRelaySessID 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.