FW: draft-ietf-tewg-diff-te-reqts-07.txt

["Wijnen, Bert (Bert)" <bwijnen@lucent.com>]

Steve asked:
>> Should this document say anything about the difficulty of packet 
>> classification in the presence of IPsec?

And I wondered: what should/could it say. 
So I checked with main author/editor.
Here is his response. 

What have people said in other documents that describe similar
stuff and have the same difficulty?

Thanks,
Bert 

-----Original Message-----
From: Francois Le Faucheur (flefauch) [mailto:flefauch@cisco.com]
Sent: donderdag 6 maart 2003 15:29
To: Wijnen, Bert (Bert)
Cc: Francois Le Faucheur (flefauch)
Subject: RE: draft-ietf-tewg-diff-te-reqts-07.txt


Bert,

I really can't think of anything specific to DSTE with respect to
classification in the presence of IPsec. Whether DSTE is used or not, it
is the same as for MPLS TE and Diff-Serv. 
In other words, MPLS TE assumes that the IP header destination address
can be used meaningfully to classify packets into Forwarding Equivalence
Class for MPLS Forwarding. Diff-Serv assumes that the DSCP header can be
used meaningfully to apply Diff-Serv. DS-TE still only uses IP
destination and DSCP.

In brief I don't see a specific "DSTE Requirements" on this issue.
Nothing more, nothing less than for existing TE and existing Diff-Serv.
No?
If I am correct, I don't think we should bring it up in the document.

Cheers

Francois

>> -----Original Message-----
>> From: Wijnen, Bert (Bert) [mailto:bwijnen@lucent.com] 
>> Sent: 06 March 2003 14:02
>> To: Francois Le Faucheur (flefauch)
>> Subject: FW: draft-ietf-tewg-diff-te-reqts-07.txt
>> 
>> 
>> Would you have some suggested text? Or an explanation why not?
>> 
>> Thanks,
>> Bert 
>> 
>> -----Original Message-----
>> From: Steve Bellovin [mailto:smb@research.att.com]
>> Sent: woensdag 5 maart 2003 20:12
>> To: iesg@ietf.org
>> Subject: draft-ietf-tewg-diff-te-reqts-07.txt
>> 
>> 
>> Should this document say anything about the difficulty of packet 
>> classification in the presence of IPsec?
>> 
>> 		--Steve Bellovin, http://www.research.att.com/~smb (me)
>> 		http://www.wilyhacker.com (2nd edition of 
>> "Firewalls" book)
>> 
>>