With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alL2tpStatsSessionRecvSeq
ALTIGA L2tp Statistics Session Receive Sequence
1.3.6.1.4.1.3076.2.1.2.16.3.1.40
This object contains the next receive sequence number expected to be received on this session.
Back to ALTIGA-L2TP-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alL2tpStatsSessionRecvSeq on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.