Re: FIB or LFIB ?

Think of LIB as a label storeroom and LFIB as the label production line.

The LIB provides labels when and where needed since it stores all local and
received labels.

The LIB will supply the CEF department with a OUT label on label imposition.

    IE for incoming IP packets if a label is available.

The LIB also supplies the LFIB department with the expected IN label mapped
to a OUT label.
   IE for incoming labeled packets.

hth

On Mon, Apr 12, 2010 at 7:56 PM, Aamir Aziz <aamiraz77_at_gmail.com> wrote:

> If the LSR will use LFIB to forward label packets then why does FIB
> have label information ?
>
> Thanks
> Aamir
>
> On 4/11/10, jack daniels <jckdaniels12_at_gmail.com> wrote:
> > if your input packet to MPLS router is Labled packet it will use LFIB
> > if your input packet to MPLS router is IP packet it will use FIB
> >
> > On Sun, Apr 11, 2010 at 6:03 PM, Aamir Aziz <aamiraz77_at_gmail.com> wrote:
> >
> >> Dear *,
> >>
> >> I have a basic MPLS question. A LSR uses FIB or LFIB to forward packets
> ?
> >>
> >> Thanks
> >> Aamir
> >>
> >> --
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