The MPLS WG Archive

Cell Relay Retreat>MPLS WG Archive>month:2001-Aug> msg00184



[Date Prev][Date Next][Thread Prev][Thread Next]  
  [Date Index][Thread Index][Author Index][Subject Index]

Difference between LIB and FIB

  • From: Robert Raszuk <raszuk@cisco.com>
  • Date: Sat, 18 Aug 2001 13:03:58 -0700
  • CC: punithan <punithan@lgsi.co.in>, mpls@UU.NET
  • Organization: Signature: http://www.employees.org/~raszuk/sig/


Eric,

> the thing you look up labels with (a labeled packet comes in,
> you go to the LIB)

Not quite. That would be the LFIB.

LIB is just a control plane database where all received label binding
are being kept and maintained. In other words the question was tricky as
the author is asking about not comparable and not related elements next
to each other :).

R.

> Eric Osborne wrote:
> 
> On Sat, Aug 18, 2001 at 09:34:03PM +0530, punithan wrote:
> > Hi,
> > I have one doubt.What is the difference between LIB(Label Information
> > Base) and FIB(Forwarding Information Base).I will be thankful if
> > somebody helps me.
> > with regds,
> > MXJPunithan
> 
> LIB = the thing you look up labels with (a labeled packet comes in,
> you go to the LIB)
> 
> FIB = the thing you look up IP routes in (an unlabeled packet comes
> in, you go to the FIB)
> 
> eric