Subject: RE: Last Call: 'Neighbor Discovery for IP version 6 (IPv6)' to Draft Standar

From: Tim Enos <[email-masked]>
Date: Sat, 28 Oct 2006 16:31:21 -0500 (CDT)

>From: "Soliman, Hesham" <[email-masked]>
>Date: 2006/10/27 Fri PM 01:54:49 CDT
>To: Basavaraj Patil <[email-masked]>, [email-masked]
>Cc: Thomas Narten <[email-masked]>
>Subject: RE: Last Call: 'Neighbor Discovery for IP version 6 (IPv6)' to	Draft Standard (draft-ietf-ipv6-2461bis)

>Folks, 
>
>This issue was discussed some time ago and we didn't officially resolve
>it on the list.
>Basavaraj is suggesting  that the hard limit of 1800 seconds is
>restrictive to some deployments (cellular) and suggests that we increase
>it. 
>
>Here is how it is currently defined:
>
>MaxRtrAdvInterval
>                     The maximum time allowed between sending
>                     unsolicited multicast Router Advertisements from
>                     the interface, in seconds.  MUST be no less than 4
>                     seconds and no greater than 1800 seconds.
>
>                     Default: 600 seconds
>
>Realistically there are two possible options to handle this:
>
>1. Accept the issue: Increase the value of the MaxRtrAdvInterval. It
>seems that in order to do this in a backward compatible way, we can't
>increase it beyond 2999 seconds. That's because the default value for
>the AdvDefaultLifetime is 3 * MaxRtrAdvInterval and it must be < 9000
>seconds. 
>
>2. Reject the issue. 
>
>Please let me know if the suggestions above are flawed or if you have
>another option to include. Otherwise, please express your opinions as to
>whether we should choose 1) or 2) above. 
>
>Personally I have no problem with 1).

I don't necessarily see any flaws in 1) and believe we should adopt it if we are not also going to increase the upper bound for AdvDefaultLifetime.

>
>Hesham
>
>
> > -----Original Message-----
> > From: Basavaraj Patil [mailto:[email-masked]] 
> > Sent: Saturday, October 28, 2006 4:24 AM
> > To: [email-masked]
> > Cc: Syam Madanapalli; Soliman, Hesham; Thomas Narten
> > Subject: Re: Last Call: 'Neighbor Discovery for IP version 6 
> > (IPv6)' to Draft Standard (draft-ietf-ipv6-2461bis) 
> > 
> > 
> > Comment about the MaxRtrAdvInterval value specified in this I-D:
> > 
> > The I-D specifies 1800 seconds as the maximum interval 
> > between sending
> > unsolicited periodic RAs. This value can be an impediment in 
> > some network
> > deployments (eg. Cellular networks). The maximum interval should be a
> > configurable value which can be set to the order of several 
> > hours (6~12
> > hours) as needed.
> > Periodic RAs every 30 minutes can be disruptive in certain 
> > networks and
> > hence the value should be modified.
> > 
> > An I-D proposing the revision of this value and the 
> > reasoning behind it is:
> > draft-madanapalli-ipv6-periodic-rtr-advts-00.txt
> > 
> > -Basavaraj
> > 
> > On 10/27/06 1:06 PM, "ext The IESG" <[email-masked]> wrote:
> > 
> > > The IESG has received a request from the IP Version 6 Working Group
> > > to consider the following document:
> > > 
> > > - 'Neighbor Discovery for IP version 6 (IPv6) '
> > >    <draft-ietf-ipv6-2461bis-09.txt> as a Draft Standard
> > > 
> > > The IESG plans to make a decision in the next few weeks, 
> > and solicits
> > > final comments on this action.  Please send any comments to the
> > > [email-masked] or [email-masked] mailing lists by 2006-11-10.
> > > 
> > > The file can be obtained via
> > > http://www.ietf.org/internet-drafts/draft-ietf-ipv6-2461bis-09.txt
> > > 
> > > Implementation Report can be accessed at
> > > http://www.ietf.org/IESG/implementation.html
> > > 
> > > 
> > > 
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> > 
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