To: Dimitri.Papadimitriou@alcatel-lucent.be
From: Peter Tomsu <ptomsu@cisco.com>
Cc: Jaudelice Cavalcante de Oliveira <jau@cbis.ece.drexel.edu>,
ccamp@ops.ietf.org, mpls@lists.ietf.org,
Ross Callon <rcallon@juniper.net>, owner-ccamp@ops.ietf.org,
JP Vasseur <jvasseur@cisco.com>
Subject: Re: [mpls] Re: CCAMP Last call on
draft-deoliveira-diff-te-preemption-06.txt
Date: Mon, 26 Feb 2007 14:47:51 +0100
Fully agree Dimitry,
we should discuss at next meeting
Peter
On 17.01.2007, at 22:41, Dimitri.Papadimitriou@alcatel-lucent.be wrote:
Hi -
let's then discuss the policy selection further - are these
not dependent on the objectives - rather than be selected /
defined independently - ?
this question is fundamental to the understanding of the
obtained results - i mean it may simply that with another
simple "policy" both would have result in the same outcome
i see here a potential discussion item for next f2f meeting -
do you agree ?
thanks,
- d.
Jaudelice Cavalcante de Oliveira <jau@cbis.ece.drexel.edu>
15/01/2007 20:23
To: Dimitri PAPADIMITRIOU/BE/ALCATEL@ALCATEL
cc: mpls@lists.ietf.org, ccamp@ops.ietf.org, Ross Callon
<rcallon@juniper.net>, owner-ccamp@ops.ietf.org, JP Vasseur
<jvasseur@cisco.com>
Subject: Re: [mpls] Re: CCAMP Last call on
draft-deoliveira-diff-te-preemption-06.txt
Hi Dimitri,
On Jan 12, 2007, at 4:31 PM, Dimitri.Papadimitriou@alcatel-lucent.be
wrote:
hi -
thanks for the reply - not sure you ever got the following response
back
----- Forwarded by Dimitri PAPADIMITRIOU/BE/ALCATEL on 12/01/2007
22:30
-----
Dimitri PAPADIMITRIOU
07/01/2007 11:43
To: Jaudelice Cavalcante de Oliveira
<jau@cbis.ece.drexel.edu>
Hi
thanks for the answer - i am still looking at the reason
why the PN selection process is driven by a uniform policy
which looks like an arbitrary choice
HBlock aims at minimizing the blocking probability
PN aims at minimizing the system perturbation
to have a fair analysis policy should be applied uniformly
and non-uniformly to both cases
Both policies were applied in the same manner. The difference is in
the selection of LSPs for preemption (largest or smallest). We chose
to keep the policies simple.
I appreciate your feedback. I'd be happy to meet with you and discuss
it further at the next IETF meeting as well.
Many thanks,
Jau.
much thanks,
- d.
--
Jaudelice Cavalcante de Oliveira <jau@cbis.ece.drexel.edu>
05/01/2007 00:11
To: Dimitri.Papadimitriou@alcatel-lucent.be
cc: mpls@lists.ietf.org, JP Vasseur <jvasseur@cisco.com>,
ccamp@ops.ietf.org, Jaudelice Cavalcante de Oliveira
<jau@cbis.ece.drexel.edu>, Ross Callon <rcallon@juniper.net>,
owner-ccamp@ops.ietf.org
Subject: [mpls] Re: CCAMP Last call on
draft-deoliveira-diff-te-preemption-06.txt
Hi Dimitri,
Thank you for your comment.
On Dec 18, 2006, at 3:47 AM, Dimitri.Papadimitriou@alcatel-lucent.be
wrote:
adrian -
in HBlock case the average wasted bw is a factor 10 smaller than
for any
other scheme (without significantly lowering the worst case,
still an
order of 10)
Indeed. This can be seen in table 2. In this case, selection of LSPs
much larger than
the required bandwidth did not occur often. The worst case value does
not reflect the
frequency with which a high bandwidth LSP was selected (which was
very rarely in
this case, therefore the low "wasted" bandwidth).
the only noticeable difference with PN is exactly that one (which is
induced by the possibility left to Hblock to have two selection
depending
on heavy vs normal loaded link) - hence it would be interesting to
know
the dependency on the min/max LSP bw and distribution (scenario
dependancy) and have a similar PN approach (non-uniform selection)
Note that PN has the objective of preempting a small number of LSPs
of the lowest
priority (therefore ordering by decreasing bandwidth), while HBlock
aims at minimizing
the blocking probability, therefore selecting smaller LSPs which will
be more likely to be
rerouted once preempted. This is the main difference between the two
policies: Given a set
of LSPs with the same priority, PN picks the largest (in the interest
of picking few) and HBlock
picks smaller ones (even if more than one, in the interest of being
able to reroute them easily).
I hope this helps,
Thanks,
Jaudelice.
thanks,
- d.
"Adrian Farrel" <adrian@olddog.co.uk>
Sent by: owner-ccamp@ops.ietf.org
14/12/2006 18:02
Please respond to "Adrian Farrel"
To: <ccamp@ops.ietf.org>
cc: <jau@cbis.ece.drexel.edu>, "Ross Callon"
<rcallon@juniper.net>, "Brungard, Deborah A, ALABS"
<dbrungard@att.com>,
<mpls@lists.ietf.org>
Subject: Re: CCAMP Last call on
draft-deoliveira-diff-te-preemption-06.txt
Hi,
I have been explicitly asked to lengthen this last call so as to
allow
time
for a review.
Unusual, but not unreasonable.
The last call is extended to noon on Sunday 17th December.
Thanks,
Adrian
----- Original Message -----
From: "Adrian Farrel" <adrian@olddog.co.uk>
To: <ccamp@ops.ietf.org>
Cc: <jau@cbis.ece.drexel.edu>; "Ross Callon" <rcallon@juniper.net>;
"Brungard, Deborah A, ALABS" <dbrungard@att.com>;
<mpls@lists.ietf.org>
Sent: Wednesday, November 29, 2006 11:06 AM
Subject: CCAMP Last call on draft-deoliveira-diff-te-
preemption-06.txt
Hi,
This draft has been developed independently and has recently been
brought
to the IESG for advancement as an individual submission to
become an
Informational RFC. I have done a first-level review and this latest
revision includes updates to reflect my comments.
Since the material here concerns preemption and the suggested
ways to
operate an MPLS-TE or GMPLS network, we are running a quick last
call on
the CCAMP mailing list to ensure that no-one has any objections.
Please send your comments to the CCAMP list no later than noon
GMT on
13th
December 2006.
Thanks,
Adrian
----- Original Message -----
From: <Internet-Drafts@ietf.org>
To: <i-d-announce@ietf.org>
Sent: Tuesday, November 28, 2006 8:50 PM
Subject: I-D ACTION:draft-deoliveira-diff-te-preemption-06.txt
A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : LSP Preemption Policies for MPLS Traffic Engineering
Author(s) : J. de Oliveira, et al.
Filename : draft-deoliveira-diff-te-preemption-06.txt
Pages : 19
Date : 2006-11-28
When the establishment of a higher priority (Traffic Engineering
Label Switched Path) TE LSP requires the preemption of a set of
lower
priority TE LSPs, a node has to make a local decision to select
which
TE LSPs will be preempted. The preempted LSPs are then
rerouted by
their respective Head-end Label Switch Router (LSR). This
document
presents a flexible policy that can be used to achieve different
objectives: preempt the lowest priority LSPs; preempt the
minimum
number of LSPs; preempt the set of TE LSPs that provide the
closest
amount of bandwidth to the required bandwidth for the
preempting TE
LSPs (to minimize bandwidth wastage); preempt the LSPs that
will have
the maximum chance to get rerouted. Simulation results are
given and
a comparison among several different policies, with respect to
preemption cascading, number of preempted LSPs, priority, wasted
bandwidth and blocking probability is also included.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-deoliveira-diff-te-
preemption-06.txt
_______________________________________________
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https://www1.ietf.org/mailman/listinfo/mpls
_______________________________________________
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https://www1.ietf.org/mailman/listinfo/mpls
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--Apple-Mail-6-916943000
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset=ISO-8859-1
<HTML><BODY style=3D"word-wrap: break-word; -khtml-nbsp-mode: space; =
-khtml-line-break: after-white-space; "><DIV><SPAN =
class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><DIV>Fully agree =
Dimitry,</DIV><DIV><BR class=3D"khtml-block-placeholder"></DIV><DIV>we =
should discuss at next meeting</DIV><DIV><BR =
class=3D"khtml-block-placeholder"></DIV><DIV>Peter</DIV><BR =
class=3D"Apple-interchange-newline"></SPAN> </DIV><BR><DIV><DIV>On =
17.01.2007, at 22:41, <A =
href=3D"mailto:Dimitri.Papadimitriou@alcatel-lucent.be";>Dimitri.Papadimitr=
iou@alcatel-lucent.be</A> wrote:</DIV><BR =
class=3D"Apple-interchange-newline"><BLOCKQUOTE type=3D"cite"><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Hi -</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">let's then discuss the policy =
selection further - are these</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">not dependent =
on the objectives - rather than be selected /<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">defined =
independently - ?</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">this question is fundamental to the understanding of =
the<SPAN class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">obtained results - i mean it may simply that with =
another</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">simple "policy" both would have =
result in the same outcome</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">i see here a potential =
discussion item for next f2f meeting -</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">do you =
agree ?</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">thanks,</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">- d.<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Jaudelice =
Cavalcante de Oliveira <<A =
href=3D"mailto:jau@cbis.ece.drexel.edu";>jau@cbis.ece.drexel.edu</A>></D=
IV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">15/01/2007 20:23</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 </SPAN>To: <SPAN =
class=3D"Apple-converted-space">=A0 =A0 </SPAN>Dimitri =
PAPADIMITRIOU/BE/ALCATEL@ALCATEL</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 </SPAN>cc: <SPAN =
class=3D"Apple-converted-space">=A0 =A0 </SPAN><A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A>, <A =
href=3D"mailto:ccamp@ops.ietf.org";>ccamp@ops.ietf.org</A>, Ross =
Callon<SPAN class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><<A =
href=3D"mailto:rcallon@juniper.net";>rcallon@juniper.net</A>>, <A =
href=3D"mailto:owner-ccamp@ops.ietf.org";>owner-ccamp@ops.ietf.org</A>, =
JP Vasseur<SPAN class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><<A =
href=3D"mailto:jvasseur@cisco.com";>jvasseur@cisco.com</A>></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 =A0 =A0 =A0
=
</SPAN>Subject:<SPAN class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 =
</SPAN>Re: [mpls] Re: CCAMP Last call<SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>on<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">draft-deoliveira-diff-te-preemption-06.txt</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Hi =
Dimitri,</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">On Jan 12, 2007, at 4:31 PM, <A =
href=3D"mailto:Dimitri.Papadimitriou@alcatel-lucent.be";>Dimitri.Papadimitr=
iou@alcatel-lucent.be</A><SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">wrote:</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV> =
<BLOCKQUOTE type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">hi -</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">thanks =
for the reply - not sure you ever got the following response<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">back</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">----- Forwarded by Dimitri PAPADIMITRIOU/BE/ALCATEL =
on 12/01/2007<SPAN class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">22:30</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">-----</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 </SPAN>Dimitri =
PAPADIMITRIOU</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 </SPAN>07/01/2007 =
11:43</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
</SPAN>To: Jaudelice Cavalcante de Oliveira</DIV><DIV
style=3D"margin-top:=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><<A =
href=3D"mailto:jau@cbis.ece.drexel.edu";>jau@cbis.ece.drexel.edu</A>></D=
IV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">Hi</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">thanks for the answer - i am still looking at the =
reason</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">why the PN selection process is =
driven by a uniform policy</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">which looks =
like an arbitrary choice</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">HBlock aims at minimizing the =
blocking probability</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">PN aims at minimizing the =
system perturbation</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; =
"><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">to have a fair analysis policy =
should be applied uniformly</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">and =
non-uniformly to both cases</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV> </BLOCKQUOTE><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">Both policies were applied in =
the same manner. The difference is in<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">the =
selection of LSPs for preemption (largest or smallest). We chose<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">to keep =
the policies simple.</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; =
"><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">I appreciate your feedback. I'd =
be happy to meet with you and discuss<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">it =
further at the next IETF meeting as well.</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Many =
thanks,</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Jau.</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV> =
<BLOCKQUOTE type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">much thanks,</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">- d.</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">--</DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">Jaudelice Cavalcante de Oliveira <<A =
href=3D"mailto:jau@cbis.ece.drexel.edu";>jau@cbis.ece.drexel.edu</A>></D=
IV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">05/01/2007 00:11</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 </SPAN>To: <SPAN =
class=3D"Apple-converted-space">=A0 =A0 </SPAN><A =
href=3D"mailto:Dimitri.Papadimitriou@alcatel-lucent.be";>Dimitri.Papadimitr=
iou@alcatel-lucent.be</A></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 </SPAN>cc: <SPAN =
class=3D"Apple-converted-space">=A0 =A0 </SPAN><A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A>, JP Vasseur =
<<A =
href=3D"mailto:jvasseur@cisco.com";>jvasseur@cisco.com</A>>,</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><A =
href=3D"mailto:ccamp@ops.ietf.org";>ccamp@ops.ietf.org</A>, Jaudelice =
Cavalcante de Oliveira</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; "><<A =
href=3D"mailto:jau@cbis.ece.drexel.edu";>jau@cbis.ece.drexel.edu</A>>, =
Ross Callon <<A =
href=3D"mailto:rcallon@juniper.net";>rcallon@juniper.net</A>>,</DIV><DIV=
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><A =
href=3D"mailto:owner-ccamp@ops.ietf.org";>owner-ccamp@ops.ietf.org</A></DIV=
<DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 =A0 =A0 =A0
=
</SPAN>Subject:<SPAN class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 =
</SPAN>[mpls] Re: CCAMP Last call on</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">draft-deoliveira-diff-te-preemption-06.txt</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Hi =
Dimitri,</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Thank you for your comment.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">On Dec =
18, 2006, at 3:47 AM, <A =
href=3D"mailto:Dimitri.Papadimitriou@alcatel-lucent.be";>Dimitri.Papadimitr=
iou@alcatel-lucent.be</A></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">wrote:</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV> =
<BLOCKQUOTE type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">adrian -</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">in =
HBlock case the average wasted bw is a factor 10 smaller than</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">for any</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">other scheme =
(without significantly lowering the worst case, still an</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">order of 10)</DIV> </BLOCKQUOTE><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Indeed. =
This can be seen in table 2. In this case, selection of LSPs</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">much larger than</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">the required =
bandwidth did not occur often. The worst case value does</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">not reflect the</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">frequency =
with which a high bandwidth LSP was selected (which was</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">very rarely in</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">this case, =
therefore the low "wasted" bandwidth).</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV> <BLOCKQUOTE type=3D"cite"><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">the only noticeable difference with PN is exactly =
that one (which is</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">induced by the possibility =
left to Hblock to have two selection</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">depending</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">on heavy vs normal loaded link) =
- hence it would be interesting to</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">know</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">the dependency on the min/max =
LSP bw and distribution (scenario</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">dependancy) =
and have a similar PN approach (non-uniform selection)</DIV> =
</BLOCKQUOTE><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Note that PN has the objective of preempting a small =
number of LSPs</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">of the lowest</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">priority (therefore ordering by decreasing =
bandwidth), while HBlock</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">aims at =
minimizing</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">the blocking probability, =
therefore selecting smaller LSPs which will</DIV><DIV
style=3D"margin-top:=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">be more =
likely to be</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">rerouted once preempted. This is =
the main difference between the two</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">policies: =
Given a set</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">of LSPs with the same priority, =
PN picks the largest (in the interest</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">of =
picking few) and HBlock</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">picks smaller =
ones (even if more than one, in the interest of being</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">able to reroute them easily).</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I hope =
this helps,</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Thanks,</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">Jaudelice.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV> <BLOCKQUOTE =
type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">thanks,</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">- =
d.</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">"Adrian =
Farrel" <<A =
href=3D"mailto:adrian@olddog.co.uk";>adrian@olddog.co.uk</A>></DIV><DIV
=
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Sent by: <A =
href=3D"mailto:owner-ccamp@ops.ietf.org";>owner-ccamp@ops.ietf.org</A></DIV=
<DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">14/12/2006 18:02</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Please =
respond to "Adrian Farrel"</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 </SPAN>To: <SPAN =
class=3D"Apple-converted-space">=A0 =A0 </SPAN><<A =
href=3D"mailto:ccamp@ops.ietf.org";>ccamp@ops.ietf.org</A>></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 =A0 =A0 =A0
=
</SPAN>cc: <SPAN class=3D"Apple-converted-space">=A0 =A0 </SPAN><<A =
href=3D"mailto:jau@cbis.ece.drexel.edu";>jau@cbis.ece.drexel.edu</A>>, =
"Ross Callon"</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><<A =
href=3D"mailto:rcallon@juniper.net";>rcallon@juniper.net</A>>, =
"Brungard, Deborah A, ALABS"</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><<A =
href=3D"mailto:dbrungard@att.com";>dbrungard@att.com</A>>,</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><<A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A>></DIV><DIV
=
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 =A0 =A0 =A0
=
</SPAN>Subject:<SPAN class=3D"Apple-converted-space">=A0 =A0 =A0 =A0 =
</SPAN>Re: CCAMP Last call on</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">draft-deoliveira-diff-te-preemption-06.txt</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Hi,</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I have =
been explicitly asked to lengthen this last call so as to<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">allow</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">time</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">for a review.</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">Unusual, but not =
unreasonable.</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">The last call is extended to noon on Sunday 17th =
December.</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Thanks,</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">Adrian</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">----- Original Message =
-----</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">From: "Adrian Farrel" <<A =
href=3D"mailto:adrian@olddog.co.uk";>adrian@olddog.co.uk</A>></DIV><DIV
=
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">To: <<A =
href=3D"mailto:ccamp@ops.ietf.org";>ccamp@ops.ietf.org</A>></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Cc: <<A =
href=3D"mailto:jau@cbis.ece.drexel.edu";>jau@cbis.ece.drexel.edu</A>>; =
"Ross Callon" <<A =
href=3D"mailto:rcallon@juniper.net";>rcallon@juniper.net</A>>;</DIV><DIV=
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">"Brungard, Deborah A, ALABS" <<A =
href=3D"mailto:dbrungard@att.com";>dbrungard@att.com</A>>;</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><<A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A>></DIV><DIV
=
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Sent: Wednesday, November 29, 2006 11:06 =
AM</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; ">Subject: CCAMP Last call on =
draft-deoliveira-diff-te-<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">preemption-06.txt</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; =
"><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV> =
<BLOCKQUOTE type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">Hi,</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">This =
draft has been developed independently and has recently been</DIV> =
</BLOCKQUOTE><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">brought</DIV> <BLOCKQUOTE =
type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">to the IESG for advancement as =
an individual submission to become an</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">Informational RFC. I have done a first-level review and this =
latest</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">revision includes updates to =
reflect my comments.</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; =
"><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">Since the material here concerns =
preemption and the suggested<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">ways =
to</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; ">operate an MPLS-TE or GMPLS network, we are =
running a quick last</DIV><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">call on</DIV> =
</BLOCKQUOTE><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV> =
<BLOCKQUOTE type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">the CCAMP mailing list to =
ensure that no-one has any objections.</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Please send =
your comments to the CCAMP list no later than noon<SPAN =
class=3D"Apple-converted-space">=A0</SPAN></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">GMT =
on</DIV> </BLOCKQUOTE><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">13th</DIV> <BLOCKQUOTE =
type=3D"cite"><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">December 2006.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">Thanks,</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">Adrian</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">----- Original Message -----</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">From: <<A =
href=3D"mailto:Internet-Drafts@ietf.org";>Internet-Drafts@ietf.org</A>><=
/DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; ">To: <<A =
href=3D"mailto:i-d-announce@ietf.org";>i-d-announce@ietf.org</A>></DIV><=
DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Sent: Tuesday, November 28, 2006 8:50 PM</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Subject: I-D =
ACTION:draft-deoliveira-diff-te-preemption-06.txt</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV> <BLOCKQUOTE type=3D"cite"><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">A New Internet-Draft is available from the on-line =
Internet-Drafts</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">directories.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Title : LSP =
Preemption Policies for MPLS Traffic Engineering</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Author(s) : J. de Oliveira, et al.</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Filename : =
draft-deoliveira-diff-te-preemption-06.txt</DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Pages : =
19</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; ">Date : 2006-11-28</DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">When the =
establishment of a higher priority (Traffic Engineering</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 =
</SPAN>Label Switched Path) TE LSP requires the preemption of a set =
of</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; ">lower</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>priority TE LSPs, a node has =
to make a local decision to select</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">which</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 </SPAN>TE =
LSPs will be preempted.<SPAN class=3D"Apple-converted-space">=A0 =
</SPAN>The preempted LSPs are then</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">rerouted =
by</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 =
</SPAN>their respective Head-end Label Switch Router (LSR).<SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>This</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">document</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>presents a flexible policy =
that can be used to achieve different</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>objectives: preempt the =
lowest priority LSPs; preempt the minimum</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>number of LSPs; preempt the =
set of TE LSPs that provide the</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">closest</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>amount of bandwidth to the =
required bandwidth for the</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">preempting =
TE</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
0px; margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 =
</SPAN>LSPs (to minimize bandwidth wastage); preempt the LSPs =
that</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">will have</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><SPAN class=3D"Apple-converted-space">=A0 </SPAN>the =
maximum chance to get rerouted.<SPAN class=3D"Apple-converted-space">=A0 =
</SPAN>Simulation results are</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">given =
and</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>a comparison among several =
different policies, with respect to</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>preemption cascading, number =
of preempted LSPs, priority, wasted</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN =
class=3D"Apple-converted-space">=A0 </SPAN>bandwidth and blocking =
probability is also included.</DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">A URL for this Internet-Draft =
is:</DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV> =
</BLOCKQUOTE></BLOCKQUOTE><DIV style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; "><A =
href=3D"http://www.ietf.org/internet-drafts/draft-deoliveira-diff-te-";>htt=
p://www.ietf.org/internet-drafts/draft-deoliveira-diff-te-</A></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">preemption-06.txt</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV> <BLOCKQUOTE type=3D"cite"><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV> </BLOCKQUOTE><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV> </BLOCKQUOTE><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; =
">_______________________________________________</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">mpls mailing list</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><A =
href=3D"https://www1.ietf.org/mailman/listinfo/mpls";>https://www1.ietf.org=
/mailman/listinfo/mpls</A></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">_______________________________________________</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">mpls mailing list</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><A =
href=3D"https://www1.ietf.org/mailman/listinfo/mpls";>https://www1.ietf.org=
/mailman/listinfo/mpls</A></DIV> </BLOCKQUOTE><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
min-height: 14px; "><BR></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; =
">_______________________________________________</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">mpls mailing list</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><A =
href=3D"https://www1.ietf.org/mailman/listinfo/mpls";>https://www1.ietf.org=
/mailman/listinfo/mpls</A></DIV><DIV style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: =
14px; "><BR></DIV><DIV style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style=3D"margin-top:
=
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">_______________________________________________</DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">mpls mailing list</DIV><DIV style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A =
href=3D"mailto:mpls@lists.ietf.org";>mpls@lists.ietf.org</A></DIV><DIV =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><A =
href=3D"https://www1.ietf.org/mailman/listinfo/mpls";>https://www1.ietf.org=
/mailman/listinfo/mpls</A></DIV> </BLOCKQUOTE></DIV><BR></BODY></HTML>=
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