[c-nsp] ASR9k: RIB/FIB convergence

[Gert Doering]

Hi,

On Tue, Aug 21, 2018 at 04:29:02PM +0200, Thomas Schmid wrote:
> according to TAC, the behavior observed is intended behavior. No change in the CEF table -> no BGP update announcement. This leads to a classical deadlock situation. 'advertise best-external' might indeed help, but as you said, FIB usage goes up a lot when you do this for e.g. upstream connections.

Note that advertise best-external is only supported if you do 
labeled-unicast.

If you run your "Internet" unlabeled, advertise best-external will do
fairly insane things which according to TAC are "works as designed"
(namely, install both the "best iBGP" and the "best eBGP" path in the
FIB and do load-sharing(!) across them).

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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3614 bytes
Desc: not available
URL: <https://puck.nether.net/pipermail/cisco-nsp/attachments/20180821/7fb584cf/attachment.bin>