S1 & X2 Handover

Dears,

Kindly what is the difference between S1 & X2 Handover in LTE

S1 handover are Core Network Anchored where as X2 handover are enodeb anchored.

Thanks

Dears,

Kindly advice how can I audit X2 interface enabled or not?
configured correctly or not?

Check your aggregation switch configuration for X2. Also in eNB

S1 handover involves the MME (part of core network), and X2 interface is not needed.