Subject: L2TPEXT Minutes

From: "W. Mark Townsley" <[email-masked]>
Date: Fri, 23 Mar 2001 10:24:12 -0500

Minutes courtesy of Ross Wheeler.

13:05  Charter Revision

Mark's presentation

Emphasized 2661 related documents in the near term

Asking for feedback

Questions/Comments:

None - Mark will pass it on the area directors

Tom: asked how many read the new charter (not many)
Mark:  Will ask for last call for the charter on list 

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13:10  PWOT || PWE3

Danny McPherson

Presentation

Questions/Comments:

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IPSRA

Mark

Mentioned that L2TP is in the requirements document

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Nishit Vasavada - [email-masked]
Frame Relay Service Type for L2TP
draft-vasavada-l2tpext-fr-svctype-00.txt
10 minutes

Presentation

Questions/Comments:

Mark - less overloading AVPs.  Sub address types are used with ISDN so
maybe
we should use another AVP.

Nishit - agreed.

Mark - no way to insure data integrity - why it isn't turning on the UDP
checksum.  You can say MUST.  Discusses PPP, UDP with L2TP and use of
checksums.  L2TP specific checksum mentioned may be a requirement of the
PWOT.  

Andrew Malis - MUST UDP checksum - issues with the header   MTU issues?
Fragmentation and reassembly - go to the FRF.5 with regards
functionality
(for ATM but still applicable).  T1.618 should be changed ITU Q.922
Q.923.

Kevin - CIR mentioned?  Nishit - next version.  With MPLS why?  Mark -
something for PWOT.  

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David Black - [email-masked], 
Danny McPherson - [email-masked]
L2TP Differentiated Services Extension
draft-ietf-l2tpext-ds-03.txt
20 minutes

Danny

Presentation

Mentioned that Wei Luo did the update

Questions/Comments:

Q:  PPP - multiple flows within a PPP session?  

Danny:  out of scope
David:  problem with L2TP, sequence numbers, and flow based diffserv -
be careful 
Mark: do not turn on sequence numbers in this case
Mark: classification of flows and mapping - one method is pure mapping
and
doesn't use this.  Text to talk about that case, another case, is this
common
knowledge?
Danny:  welcome to the proposal
Mark:  do you reflect?
Thomas:  Possible to modify the existing PHBID?  Is there a message to
use?
Mark:  SLI or create a new message type.
Mark:  Why?
Thomas:  Won't know until after authentication
Mark:  should consider it.

None

David Black

Presentation on Diffserv

Questions/Comments:

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Gilles Bourdon ([email-masked])
L2TP Multicast Extension
draft-bourdon-l2tpmulticast-00.txt
10 minutes

Gilles

Presentation

Questions/Comments: 

Mark:  Experimental draft.  If it's adopted then we could move standards
track.  

Danny:  No patents?

G:  No.

Thomas:  How many people in a group?

G:  Not setup yet.  5000 users for one LAC.

Dave Allen:  source question - do I receive a copy as a source?

G:  yes, designed just for downstream data

Mark:  security issues:  inject an MSI?

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L2TP Mib
Evan Caves

Presentation

Doesn't support header compression, alt. payloads.

Questions/Comments:

Glen:  Go ahead and become an RFC.  Changing the structure of the
existing
MIB, change it to two new ones.

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W. Mark Townsley - [email-masked]
L2TPEXT Milestones update and review
L2TPEXT Charter Revision
Remaining time