Re: SDN Internet Router (sir)

[Matthew Walster via NANOG <nanog () nanog org>]

On Fri, 6 Jan 2023, 17:07 Masataka Ohta, <mohta () necom830 hpcl titech ac jp>
wrote:

> Christopher Morrow wrote:
>
> > Some of the reasoning behind 'i need/want to do SDN things' is 'low fib
> > device' sort of reasonings.
>
> What?
>
> SDN is a poor alternative for those who can't construct a
> network with fully automated QoS guarantee.
>
> Even with SDN, QoS guarantee implies QoS routing requiring
> dedicated routing table entry for each flow, which will not
> shrink but bloat routing tables regardless of whether you
> call it FIB or not.


I'm going to have to "what?" you right back there. You don't need to
program each individual flow, just each FEC.

SDN does not imply QoS routing, it's just one aspect of it. Some use it for
classifying guest traffic etc.

M

>