Re: [addr-select-dt] Proposed default policy table
"Tony Hain" <alh-ietf@tndh.net> Tue, 13 July 2010 18:28 UTC
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From: Tony Hain <alh-ietf@tndh.net>
To: 'Aleksi Suhonen' <Aleksi.Suhonen@tut.fi>, addr-select-dt@ietf.org
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Date: Tue, 13 Jul 2010 11:27:52 -0700
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Subject: Re: [addr-select-dt] Proposed default policy table
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I have no problem with leaving more space, I just didn't want to take people too far from what existed... ;) I don't believe we are actually deprecating 3ffe::, just operationally removing it from use at this time. It was never defined with a specific functionality in the stack, so it should not get downgraded unnecessarily. Due to the explicit 2000::/3 not covering it, 3ffe:: will fall into 'default', so it does get a lower preference indirectly. Tony > -----Original Message----- > From: addr-select-dt-bounces@ietf.org [mailto:addr-select-dt- > bounces@ietf.org] On Behalf Of Aleksi Suhonen > Sent: Sunday, July 11, 2010 4:52 PM > To: addr-select-dt@ietf.org > Subject: Re: [addr-select-dt] Proposed default policy table > > Hi, > > Tony wrote: > > I suggest leaving 10, 40,& 80 in the precedence so people can move > IPv4 or > > ULA around without feeling the need to rewrite the other labels (they > don't > > have to, but an obvious hole to park it in reduces confusion). > > The number of bits in the precedence value has not been defined, but I > understand that most implementations use at least 32 bits anyway. I > would like to see the default precedence values multiplied by 100 to > leave more room for algorithmically generated entries and manual > tinkering. > > There are only 4 values available between fc00::/8 and fd00::/8 for > example. Those could be easily consumed after a couple of corporate > fusions. > > I guess the idea has been that local administration can override all > values to their liking. However, my understanding of the best practises > for system and network administration is that the defaults are changed > as little as possible. And the defaults should preferably "shine > through" from under local modifications. This means that when the > defaults are changed due to some software update, they might adversely > interfere with the local changes. > > I don't mind it if the default precedences are multiplied by even more > than a hundred, I just feel it is important that there should be more > space between the default values. > > Tony Hain also wrote: > > Precedence Label Prefix > > ---------- ----- -------------------------------- > ... > > 1 6 fec0::/16 > > Aren't we removing site local completely while we're at it? Or if it > should be kept around, then why not add 3ffe::/16 too for the same > reason? > > -- > Aleksi Suhonen > Department of Communications Engineering > Tampere University of Technology > _______________________________________________ > addr-select-dt mailing list > addr-select-dt@ietf.org > https://www.ietf.org/mailman/listinfo/addr-select-dt
- Re: [addr-select-dt] Proposed default policy table Arifumi Matsumoto
- [addr-select-dt] Proposed default policy table Tony Hain
- Re: [addr-select-dt] Proposed default policy table Tim Chown
- [addr-select-dt] Update: draft-ietf-6man-addr-sel… Tim Chown
- Re: [addr-select-dt] Proposed default policy table Aleksi Suhonen
- Re: [addr-select-dt] Proposed default policy table Mohacsi Janos
- Re: [addr-select-dt] Proposed default policy table Tim Chown
- Re: [addr-select-dt] Proposed default policy table Arifumi Matsumoto
- Re: [addr-select-dt] Proposed default policy table Aleksi Suhonen
- Re: [addr-select-dt] Proposed default policy table Mohacsi Janos
- Re: [addr-select-dt] Proposed default policy table Arifumi Matsumoto
- Re: [addr-select-dt] Proposed default policy table Arifumi Matsumoto
- Re: [addr-select-dt] Update: draft-ietf-6man-addr… Arifumi Matsumoto
- Re: [addr-select-dt] Proposed default policy table Tim Chown
- Re: [addr-select-dt] Update: draft-ietf-6man-addr… Tim Chown
- Re: [addr-select-dt] Proposed default policy table Tony Hain
- Re: [addr-select-dt] Proposed default policy table Tony Hain
- Re: [addr-select-dt] Proposed default policy table Aleksi Suhonen
- Re: [addr-select-dt] Proposed default policy table Tim Chown