Re: [netlmm] FW: I-D Action:draft-ietf-netlmm-grekey-option-08.txt

Agree with Sri, GRE key management is vendor specific.
Since exception case exists, SHOULD is okey. I don't 
see other document is drafted as 'MUST... except...".

B.R.
Yungui 

> -----Original Message-----
> From: netlmm-bounces@ietf.org 
> [mailto:netlmm-bounces@ietf.org] On Behalf Of Ahmad Muhanna
> Sent: Saturday, May 02, 2009 12:46 AM
> To: Vijay Devarapalli; netlmm@ietf.org
> Subject: Re: [netlmm] FW: I-D 
> Action:draft-ietf-netlmm-grekey-option-08.txt
> 
> 
> Hello Folks,
> If there is anyone who does NOT agree with the proposed change below,
> please speak up.
> 
> > > 
> > > May be what we can do is have a general statement which says:
> > > 
> > > "The LMA MUST maintain the same negotiated uplink GRE key for the 
> > > lifetime of the mobility session. However, for 
> > administrative reasons, 
> > > e.g., LMA reboot, the LMA MAY change the uplink GRE key for 
> > some the 
> > > mobility session. In that case, some packet loss may be 
> > experienced."
> > > 
> > > Then we maintain MUST in all other cases of the text.
> 
> Thanks!
> 
> Regards,
> Ahmad
> 
> > -----Original Message-----
> > From: Vijay Devarapalli [mailto:vijay@wichorus.com] 
> > Sent: Friday, May 01, 2009 11:12 AM
> > To: Muhanna, Ahmad (RICH1:2H10); netlmm@ietf.org
> > Subject: Re: [netlmm] FW: I-D 
> > Action:draft-ietf-netlmm-grekey-option-08.txt
> > 
> > Hi Ahmad,
> > 
> > On 5/1/09 9:09 AM, "Ahmad Muhanna" wrote:
> >  
> > > I understand this is a tricky area. My understanding of 
> "SHOULD" is 
> > > that LMA "MUST" do it unless there is a strong and valid 
> > reason NOT do 
> > > it; but I agree that keeps the door open for interpretation.
> > > 
> > > May be what we can do is have a general statement which says:
> > > 
> > > "The LMA MUST maintain the same negotiated uplink GRE key for the 
> > > lifetime of the mobility session. However, for 
> > administrative reasons, 
> > > e.g., LMA reboot, the LMA MAY change the uplink GRE key for 
> > some the 
> > > mobility session. In that case, some packet loss may be 
> > experienced."
> > > 
> > > Then we maintain MUST in all other cases of the text.
> > 
> > This sounds good to me.
> > 
> > Vijay
> > 
> > > 
> > > Regards,
> > > Ahmad
> > >  
> > > 
> > >> -----Original Message-----
> > >> From: Vijay Devarapalli [mailto:vijay@wichorus.com]
> > >> Sent: Friday, May 01, 2009 10:48 AM
> > >> To: Muhanna, Ahmad (RICH1:2H10); netlmm@ietf.org
> > >> Subject: Re: [netlmm] FW: I-D
> > >> Action:draft-ietf-netlmm-grekey-option-08.txt
> > >> 
> > >> Hi Ahmad,
> > >> 
> > >> On 4/30/09 10:41 PM, "Ahmad Muhanna" wrote:
> > >> 
> > >>> Hello Folks,
> > >>> 
> > >>> We submitted a new revision with 2 changes:
> > >>> 
> > >>> 1. Minor editorial changes to always use of mobile access
> > >> gateway and
> > >>> local mobility anchor for consistency.
> > >>> 
> > >>> 2. Demoting the "MUST" to "SHOULD" when requiring the LMA 
> > to return 
> > >>> the "same" uplink GRE key that was exchanged in the last 
> > successful 
> > >>> Proxy Binding Update. This ensures the case when the 
> LMA needs to 
> > >>> generate a new GRE key due to a case of failure.
> > >> 
> > >> We need some text to say when the LMA can change the 
> > uplink GRE key. 
> > >> With the 'MUST' we had earlier, the MAG could expect to 
> > use the same 
> > >> uplink GRE key for the lifetime of the mobility session. 
> > But now with 
> > >> a 'SHOULD', an LMA implementation could decide to change 
> > the uplink 
> > >> GRE key in the middle of a session for reasons other than a "LMA 
> > >> reboot".
> > >> 
> > >> Vijay
> > >> 
> > >>> 
> > >>> Thanks!
> > >>> 
> > >>> Regards,
> > >>> Ahmad
> > >>> 
> > >>> -----Original Message-----
> > >>> From: i-d-announce-bounces@ietf.org
> > >>> [mailto:i-d-announce-bounces@ietf.org] On Behalf Of 
> > >>> Internet-Drafts@ietf.org
> > >>> Sent: Thursday, April 30, 2009 5:00 PM
> > >>> To: i-d-announce@ietf.org
> > >>> Cc: netlmm@ietf.org
> > >>> Subject: I-D Action:draft-ietf-netlmm-grekey-option-08.txt
> > >>> 
> > >>> A New Internet-Draft is available from the on-line 
> > Internet-Drafts 
> > >>> directories.
> > >>> This draft is a work item of the Network-based 
> Localized Mobility 
> > >>> Management Working Group of the IETF.
> > >>> 
> > >>> 
> > >>> Title           : GRE Key Option for Proxy Mobile IPv6
> > >>> Author(s)       : A. Muhanna, et al.
> > >>> Filename        : draft-ietf-netlmm-grekey-option-08.txt
> > >>> Pages           : 24
> > >>> Date            : 2009-04-30
> > >>> 
> > >>> This specification defines a new Mobility Option for 
> allowing the 
> > >>> mobile access gateway and the local mobility anchor to
> > >> negotiate GRE
> > >>> (Generic Routing Encapsulation) encapsulation mode and 
> > exchange the 
> > >>> downlink and uplink GRE keys which are used for marking the
> > >> downlink
> > >>> and uplink traffic that belong to a specific mobility 
> > session.  In 
> > >>> addition, the same mobility option can be used to 
> > negotiate the GRE 
> > >>> encapsulation mode without exchanging the GRE keys.
> > >>> 
> > >>> A URL for this Internet-Draft is:
> > >>> 
> > >> 
> > 
> http://www.ietf.org/internet-drafts/draft-ietf-netlmm-grekey-option-0
> > >> 8
> > >>> .t
> > >>> xt
> > >>> 
> > >>> Internet-Drafts are also available by anonymous FTP at:
> > >>> ftp://ftp.ietf.org/internet-drafts/
> > >>> 
> > >>> Below is the data which will enable a MIME compliant 
> mail reader 
> > >>> implementation to automatically retrieve the ASCII 
> version of the 
> > >>> Internet-Draft.
> > >>> _______________________________________________
> > >>> netlmm mailing list
> > >>> netlmm@ietf.org
> > >>> https://www.ietf.org/mailman/listinfo/netlmm
> > >> 
> > >> 
> > 
> > 
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