Re: [PATCH] Clean up fib_hash datastructures

[jamal <hadi@xxxxxxxxxx>]

On Wed, 2004-09-22 at 07:56, Steven Blake wrote:
> On Tue, 2004-09-21 at 23:10, jamal wrote:
> 
> > On Tue, 2004-09-21 at 19:38, Steven Blake wrote:
> > 
> > > RFC 1812 was written before TOS routes were pulled out of OSPFv2 (due to
> > > too fee independent implementations).  No one implements FIB lookup as
> > > described in RFC 1812 in the core.  What people do implement is PBR, as
> > > well as DSCP-based nexthop selection for MPLS DIFF-TE (RFC 3564).
> > 
> > What about edge?
> 
> I've seen no evidence that any HW-based router is doing this.

None of the chips i have come across had it - what about NPF, are they
putting this in their specs?

> > The PBR nh selection is a post routing policy though. Do you see it 
> > valuable to have DSCP replace TOS for lookup? 
> 
> No.  No protocol is distributing DSCP-based routes.
> 

Ok, sounds like we can write an obituary for TOS based routing.
RIP.

cheers,
jamal