With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoAtmVclCrossVpi
cisco Atm Vcl Cross Virtual Path Identifier
1.3.6.1.4.1.9.10.13.1.2.1.1.16
This specifies the VPI value of the VCL to which this VCL is cross-connected. For point to multi-point connection, this is the root VCL's VPI for the leaf entry. Similarly it is the 1st leaf's VPI value for the root entry.
Back to CISCO-ATM-CONN-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoAtmVclCrossVpi 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.