The value of tmnxOspfLoopfreeAlternate specifies whether to enable or
disable IP fast re-route capability for OSPF.
When the value of tmnxOspfLoopfreeAlternate is set to 'true' IP fast
re-route capability for OSPF is enabled and when
tmnxOspfLoopfreeAlternate is set to 'false' IP fast re-route capability
for OSPF is disabled.