[c-nsp] eBGP/iBGP question

[Gert Doering]

Hi,

On Thu, Dec 24, 2020 at 10:16:08AM +0200, hank at interall.co.il wrote:
> Ideas and clues welcome.

BGP will only ever signal the best path onward.  

So if R1 decides "I like eBGP paths behind R2 much more!", it will never 
send its own eBGP paths to R2, because they are not "best".

There is "bgp best-external" and "bgp add-paths" to achieve other
results, but those have implications - like "more memory usage" and
on XR "best-external does totally weird things unless you run labeled-
unicast".

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
                             Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany                             gert at greenie.muc.de
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