cefAdjEntry
1.3.6.1.4.1.9.9.492.1.2.2.1
If CEF is enabled on the Managed device,
each entry contains the adjacency
attributes. Adjacency entries may exist
for all the interfaces on which packets
can be switched out of the device.
The interface is instantiated by ifIndex.
Therefore, the interface index must have been
assigned, according to the applicable procedures,
before it can be meaningfully used.
Generally, this means that the interface must exist.
entPhysicalIndex is also an index for this
table which represents entities of
'module' entPhysicalClass which are capable
of running CEF.