[c-nsp] IP LFA in ring topology

Saku Ytti saku at ytti.fi
Thu Nov 29 05:48:27 EST 2012


On (2012-11-29 10:16 +0100), Adam Vitkovsky wrote:

> Not that I would want to mess with it but..
> Would it be possible with use of multi-topology isis 
>  -create one topology/point of view per node in ring?

I suppose so yes :). But how would you decide which topology packets go?
IIRC today in Cisco you need to use DSCP to decide topology, so you'd give
each ring node their own DSCP value and you'd lose ability to offer
customers any QoS?
So perverse I really want to see someone do it.

There is lot of push right now in standard bodies to make repairs faster
and cover more scenarios. LFA IP-FRR is not end-goal, it's just interim
check-point.


-- 
  ++ytti


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