Five nines availability is being  expected from IP networks due to the
growing popularity  of IP  telephony and the  increasing usage  of the
Internet   for  mission-critical   applications.    This  necessitates
enhancing  the resiliency  of IP  networks against  transient failures
that are observed to happen relatively frequently even in well-managed
networks.   Towards that  end, we  proposed failure  inferencing based
fast  rerouting  (FIFR) approach  that  exploits  the  existence of  a
forwarding  table  per line-card,  for  lookup  efficiency in  current
routers, to provide fast rerouting  similar to MPLS, while adhering to
the  destination-based forwarding  paradigm.  Earlier,  we  have shown
that  FIFR  can deal  with  single link  in  a  network consisting  of
point-to-point links with symmetric  link weights.  In this report, we
propose a  similar scheme that  handles single node failure.   Then we
generalize FIFR to handle both link and node failures also in networks
with asymmetric link weights  and multiple access links.  Furthermore,
we extend FIFR to offer  protection against the failure of an inter-AS
link or an  AS border node in case of a  multi-homed AS.  In addition,
we  demonstrate that  FIFR,  which is  designed  for local  protection
during urgent network events, can be combined with a scheme of ordered
FIB update  to prevent transient loops during  global convergence.  We
also  show  that  FIFR  can  be deployed  incrementally.   With  these
extensions,  we argue  that FIFR  elevates  the resiliency  of any  IP
network with minimal changes to the forwarding and routing planes.