Dan,
> As for the definition of “valid”, it is the same as uRPF.
I beg to differ on this.
uRPF is applied on a directly connected interfaces to the site.
The moment you depart from that very point - you are compromising network resilience. And that worries me the most in this effort to be launched.
Many thx,
Robert
On Sat, Jun 4, 2022 at 12:44 AM Dan Li <tolidan@xxxxxxxxxxxxxxx> wrote:
Hi Robert,
As for the definition of “valid”, it is the same as uRPF. Specifically, if there exists a feasible “forwarding path” from the “source prefix” to the incoming interface of a router, then the router regard the incoming packet as having a “valid incoming interface”. The only difference between SAVNET and uRPF is how to check the “forwarding path”, which is also the reason why uRPF has inaccuracy problem.
Best,
Dan
