Re: [aqm] Question re draft-baker-aqm-recommendations recomendation #2

[John Leslie <[e-mail]>]

Linda Dunbar <[e-mail]> wrote:
> 
> Generally agree with signaling to an endpoint using both dropping and
> ECN, except ECN marking may not be possible in MPLS networks because
> MPLS ECN uses EXP bits that are used to mark Priority in many deployed
> networks. 

   I believe that is covered by:
" 
" ...implement that effect by marking ECN-capable traffic "Congestion
" Experienced (CE)"

since the same traffic can indeed be ECN-capable at one point of the
path followed but not another. (Nonetheless, word-smithing may help...)

> I think that it is important to emphasize that ECN marking for end
> points to notify source nodes don't work well in very large networks. 

   I don't follow your point here. There are cases where ECN marking
may not work very well, but I don't see any correlation to the size
of the network. (ECN signals reach a receiving endpoint unless something
is broken.)

--
John Leslie <[e-mail]>