This table allows the administrator to map a node or
LSR Identifier (IP compatible [Global_Node_ID] or ICC)
with a local identifier.
This table is created to reuse the existing
mplsTunnelTable for MPLS based transport network
tunnels also.
Since the MPLS tunnel's Ingress/Egress LSR identifiers'
size (Unsigned32) value is not compatible for
MPLS-TP tunnel i.e. Global_Node_Id of size 8 bytes and
ICC of size 6 bytes, there exists a need to map the
Global_Node_ID or ICC with the local identifier of size
4 bytes (Unsigned32) value in order
to index (Ingress/Egress LSR identifier)
the existing mplsTunnelTable.