Hi, On Wed, Dec 10, 2025 at 07:12:25PM +0100, Lukas Tribus via cisco-nsp wrote: > I don't understand. > > How is this supposed to work without transient loops and without > tunneling (label unicast/vpnv4), when your core has yet to converge? > > For this to work the internal routers you cross all would have to > converge their FIB at the same time at the same speed and in the same > order? > > What am I missing here?
Without labels ("any sort of tunnels") you would see transient loops,
but convergence would still be faster if the edge already has a candidate
backup path - as compared to "send withdraw, wait for the other side(s)
to process the withdraw, and send the new-best path back". So it will
be converged after "process withdraw, select new path".
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 [email protected]
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