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RE: Difference between LIB & LFIB

  • From: "Bell, John" <john.bell@thus.net>
  • Date: Thu, 30 Aug 2007 11:06:16 +0100
  • Resent-Date: Thu, 30 Aug 2007 06:59:34 -0400
  • X-Scanned-By: MIMEDefang 2.53 on 209.239.41.31

Hi Akshay,
    The Label Information Base (LIB) in an LSR holds ALL the local labels assigned by that LSR, and a mapping between those labels and the labels received from neighbouring LSRs.
 
The Label Forwarding Information Base (LFIB) holds ONLY those local labels that are currently being used for forwarding. It also has a mapping between these labels and the outgoing labels received from neighbour LSRs, but additionally it also holds the egress interface to be used in forwarding, and the IP next hop address.
 
Hope this helps,
    John

From: Akshay Balhara [mailto:akshay10034@rediffmail.com]
Sent: 30 August 2007 09:19
To: mpls-ops@mplsrc.com
Subject: [MPLS-OPS]: Difference between LIB & LFIB

Dear All,

Can anybody tell me what is the difference between LIB & LFIB?

Regards,
Akshay Balhara



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