The tmnxVrrpAssoBfdIntfTable is a read-only table which provides
a list of the BFD interfaces associated with the corrosponding
VRRP virtual router instance.
The BFD interface provides a fast mechanism for changing the state
of an VRRP virtual router instance riding on the same subnet.
The tmnxVrrpAssoBfdIntfTable is obsoleted and is replaced by
tVrrpAssoBfdIntfTable.