Re: Comments on LMP draft version 04

[Dimitri.Papadimitriou@alcatel.be]

you would have seen that the LMP i-d uses the correct term
"Verify Transport Mechanism" it is really what it refers to 
"how the test messages are transported between transport 
plane interfaces" thus here we get into a case where the 
transport plane technology provides an overhead where 
"data" (this is also consistent with the term DCC = 
Data Communication Channel) can be transported, therefore 
data plane means here the transport plane (= paylaod + 
overhead for technologies such as sdh/oth) where the 
overhead can clearly transport IP packets (using for 
instance PPP in HDLC-like framing, see RFC-1662), all
this in addition to the other transport mechanisms 
described in section 14.8

hope this clarifies but it seems as said before that 
most of these questions raised from the terminology,

- dimitri.

"Bernstein, Greg" wrote:
> 
> IP in the data plane for test messages?  Kireeti most optical circuit switch
> equipment (switches) can't touch the IP in the data plane and wouldn't even
> know that its carrying IP.
> What are you getting at below with you're comment?  Note that J0, J1 or J2
> strings are not even communications channels and hence you couldn't send IP
> test messages.  Line and Section DCC are not considered data plane but
> overhead in SDH/SONET.  Hmm, does LMP not belong in the IETF?
> 
> Greg
> 
> -----Original Message-----
> From: Kireeti Kompella [mailto:kireeti@juniper.net]
> Sent: Monday, August 05, 2002 10:18 AM
> To: Michiel van Everdingen
> Cc: Yakov Rekhter; Jonathan Lang; ccamp@ops.ietf.org
> Subject: Re: Comments on LMP draft version 04
> 
> Hi Michiel,
> 
> On Mon, 5 Aug 2002, Michiel van Everdingen wrote:
> 
> A couple of points of order:
> 
> > This is still not clear to me. Do you see a problem in
> > http://www.ietf.org/internet-drafts/draft-everdingen-ccamp-lmp-update-00 ?
> 
> The issue here is *not* whether there is a problem in
> draft-everdingen-ccamp-lmp-update-00, but whether there is a problem in
> draft-ietf-ccamp-lmp-04.  It is not incumbent on the authors of lmp-04
> to find problems in your draft.
> 
> > There is no IP based "data plane" through which you can send "test
> > messages".
> 
> Any variant of LMP that explicitly disallows IP in the data plane does
> not belong in the IETF.
> 
> Kireeti.

-- 
Papadimitriou Dimitri 
E-mail : dimitri.papadimitriou@alcatel.be 
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