The LSP SNMP Setting default polling group is used by MPLS Manager to monitor the availability of LSPs. MPLS Manager monitors the availability by monitoring the TE LSPs and LDP LSPs that are discovered on PE or P devices.
The LSP SNMP Setting polling group has a default setting and an optional setting:
LSP State Monitoring (default)
LSP External Setting (optional)
The two settings are mutually exclusive, meaning that only one or the other (but not both) can be specified for an LSP SNMP Setting polling group at any given time.