Re: Working Group Last Call: RMD QOSM

Hi,

A few comments (certainly not a full review!)

S2 terminology
I think these should be functional definitions. Eg if the ingress node
is congested your definition implies that it doesn't congestion mark.
DiffServ (& PCN) use functional definitions

I think you should add a definition of NSIS aware & unaware. I found it
quite confusing. At the moment when one of these terms is mentioned the
doc often gives a semi-definition. Nsis unaware seems to mean something
like, unaware of nsis signalling, but some sorts of nsis state & rmd ops
are possible. You can tell from the last sentence that I didn't get a
good view of what it meant! For instance I found S4.3.2 , the 2 paras
about probing, confusing. 

S3.1 top of page 7: measurement-based, "once an admission decision is
made, no record need be kept". Surely the ingress needs to keep a
record, because it has to police

3.2.3 first para
"The reason for this.." I didn't understand your reasoning. I think this
is something to do with the <QoS Desired> parameter, which you assumed
I'd know what it does.

3.2.3 
6 different possible signalling schemes is a lot for one document? 
Items 3 & 4 form a pair (different sever congestion operation) as do
items 5 & 6. but items 1 & 2 don't - why? 
Wasn't sure what "per aggregate" meant (4.3.1 didn't help) - I guess
this is just standard nsis terminology?

PCN is only mentioned in one sentence in S3.2.3. do you (or rather the
iesg) think this is enough? (I'm personally ok with this level.)

4.6.1.6.2.1
"one DSCP for severe congestion indication for each of the AF  classes".
Contradicts 3.2.3 where say 0 or 1 AF class?

S5 security
Should there be separate considerations for your 6 different possible
signalling schemes?
Why have you got SHOULDs? Should they be MUSTs?

App A - good that this is now an example in Appendix ( I seem to
remember it was in the main text before)

Fig A.1 - why is there no event for moving from severe cong state to
cong notification state.

Best wishes,
phil

{ -----Original Message-----
{ From: [email protected] [mailto:[email protected]] On Behalf
Of
{ Jukka Manner
{ Sent: 27 October 2008 06:46
{ To: NSIS Working Group
{ Subject: [NSIS] Working Group Last Call: RMD QOSM
{ 
{ 
{ Dear all,
{ 
{ This message starts the Working Group Last Call on the RMD QOSM.
{ 
{ http://tools.ietf.org/wg/nsis/draft-ietf-nsis-rmd/
{ 
{ Please submit your comments within two weeks, by Monday November 10th.
{ 
{ Regards,
{ Jukka
{ 
{ ps. And, please people, be a bit more active. Thanks.
{ _______________________________________________
{ nsis mailing list
{ [email protected]
{ https://www.ietf.org/mailman/listinfo/nsis