With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mipSecSPI
mip Sec SPI
1.3.6.1.2.1.44.1.2.1.1.2
The SPI is the 4-byte opaque index within the Mobility Security Association which selects the specific security parameters to be used to authenticate the peer, i.e. the rest of the variables in this MipSecAssocEntry.
Back to MIP-MIB MIB page.
IPHost Network monitor allows you to monitor mipSecSPI 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.