Partial vs Full tables
nanog at ics-il.net
Sat Jun 6 11:10:30 UTC 2020
Does anyone have a non-paywalled version of that FIB Compression page?
Intelligent Computing Solutions
----- Original Message -----
From: "Yang Yu" <yang.yu.list at gmail.com>
To: "William Herrin" <bill at herrin.us>
Cc: "Tore Anderson" <tore at fud.no>, nanog at nanog.org
Sent: Friday, June 5, 2020 8:07:52 PM
Subject: Re: Partial vs Full tables
On Fri, Jun 5, 2020 at 10:39 AM William Herrin <bill at herrin.us> wrote:
> Speak of which, did anyone ever implement FIB compression? I seem to
> remember the calculations looked really favorable for the leaf node
> use case (like James') where the router sits at the edge with a small
> number of more or less equivalent upstream transits. The FIB is the
> expensive memory. The RIB sits in the cheap part of the hardware.
fib optimize => using LPM table for LEM
FIB compression => install only 1 entry into FIB for compressable
routes with shared nexthop
The feature itself works as intended. version/platform/config
compatibility needs some considerations.
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