RE: Why do we need to go with 128 bits address space ?
"Pengshuping (Peng Shuping)" <pengshuping@huawei.com> Tue, 20 August 2019 02:46 UTC
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From: "Pengshuping (Peng Shuping)" <pengshuping@huawei.com>
To: shyam bandyopadhyay <shyamb66@gmail.com>, "ietf@ietf.org" <ietf@ietf.org>
CC: "irtf-discuss@irtf.org" <irtf-discuss@irtf.org>, "6man@ietf.org" <6man@ietf.org>
Subject: RE: Why do we need to go with 128 bits address space ?
Thread-Topic: Why do we need to go with 128 bits address space ?
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Date: Tue, 20 Aug 2019 02:45:21 +0000
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I just wonder, over two decades ago when the discussions happened, whether the question that was asked most was " Why do we need to go with 128 bits address space if whatever is been trying to achieve with the existing approach of IPv6, can be achieved by 64 32bits (IPv4) address space as well?" But as we can see that the consensus (though maybe rough) was finally achieved back then when the hardware and software capabilities were still very limited. People say “wise people made history”. I always believe so. Just a bit curious about, why NOW when today’s technologies (HW/SW processing capabilities as well as the ever-increasing bandwidth) are more advanced compared with those at 25 years ago, suddenly people become very concern with the overhead and start questioning about the “extra burden” caused by the packet address/header length… Shuping From: ipv6 [mailto:ipv6-bounces@ietf.org] On Behalf Of shyam bandyopadhyay Sent: Thursday, August 15, 2019 3:33 PM To: ietf@ietf.org Cc: irtf-discuss@irtf.org; 6man@ietf.org Subject: Why do we need to go with 128 bits address space ? To: The Entire IETF community Sub: Why do we need to go with 128 bits address space if whatever is been trying to achieve with the existing approach of IPv6, can be achieved by 64 bits address space as well? Dear Folks, I raised this issue couple of times earlier. My intention was to collect all the points in support of 128 bits address space and try to figure out whether they can be solved with 64 bits address space as well. I believe that all the points that were mentioned in the requirement specification of IPv6, can be achieved with 64 bits address space as well. I have received comments and queries from few people (including Suresh Krishnan, Robert Moskowitz, Fred Baker, Ted Lemon, Ole Troan, Jordi Palet, Mark Smith and Gyan Mishra) so far. I am thankful to all of them for all their inputs. I have tried to answer all the queries that they had (Please follow the attached file). I would request more and more people to come forward and deliver their inputs in favor of 128 bits address space that can not be achieved with 64 bits address space. If it can be shown that 64 bits address space is good enough to solve all the requirements, either we have to move back to 64 bits address space in the future or we have to carry through this extra burden for ever for no reason. I would request readers to go through draft-shyam-real-ip-framework as a reference. It shows that if address space gets assigned to customer networks based on their actual need (in contrast to 64 bits prefixes for any customer network in IPv6), 64 bits address space is good enough for this world. Along with that, it comes up with the following: 1. It shows how to make a transition from (NAT based) private IP space to (NAT free) real IP space. 2. It comes up with a light weight routing protocol applicable inside VLSM tree that satisfies all the features supported by BGP. (It is applicable in IPv6 environment as well with the required changes in the addressing architecture). 3. It come up with a simple protocol for Host Identification with Provider Independent Address with the approach of DNS. This can be considered as an alternative of existing protocol (HIP). (It is applicable in IPv6 environment as well with the required changes in the addressing architecture). 4. It comes up with a hierarchical distribution of network for the convenience of routing and distribution that may be considered as useful in the long run. Hence, I would request all the like minded people to come forward and look into this matter seriously. Last time I had sent this mail to the 105attendees list. Robert Moskowoitz suggested to move it to the IETF mailing list. Fred Baker suggested to send this as a proposal to the IRTF list. Hence, I am sending this mail once again. Thanks and regards, Shyam
- Why do we need to go with 128 bits address space ? shyam bandyopadhyay
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Mark Smith
- Re: [irtf-discuss] Why do we need to go with 128 … Roland Bless
- Re: [irtf-discuss] Why do we need to go with 128 … Brian Carpenter
- Re: [irtf-discuss] Why do we need to go with 128 … Roland Bless
- Re: Why do we need to go with 128 bits address sp… Sam Kerner
- Re: Why do we need to go with 128 bits address sp… Robert Moskowitz
- Re: [irtf-discuss] Why do we need to go with 128 … Lixia Zhang
- Re: [irtf-discuss] Why do we need to go with 128 … Mark Allman
- Re: Why do we need to go with 128 bits address sp… Keith Moore
- Re: Why do we need to go with 128 bits address sp… tom petch
- Re: Why do we need to go with 128 bits address sp… Robert Moskowitz
- Re: Why do we need to go with 128 bits address sp… Scott O. Bradner
- Does routing table size still matter (Re: Why do … Nico Williams
- Re: Why do we need to go with 128 bits address sp… Nico Williams
- Re: [irtf-discuss] Why do we need to go with 128 … Fernando Gont
- Re: [irtf-discuss] Why do we need to go with 128 … Tom Herbert
- RE: [irtf-discuss] Why do we need to go with 128 … Chengli (Cheng Li)
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Does routing table size still matter (Re: Why… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Carsten Bormann
- Re: [irtf-discuss] Why do we need to go with 128 … Roland Bless
- Re: [irtf-discuss] Why do we need to go with 128 … Fernando Gont
- Re: [irtf-discuss] Why do we need to go with 128 … Mark Smith
- Re: Why do we need to go with 128 bits address sp… Musa Stephen Honlue
- Re: Why do we need to go with 128 bits address sp… Behcet Sarikaya
- Re: [irtf-discuss] Why do we need to go with 128 … Phillip Hallam-Baker
- Re: [irtf-discuss] Why do we need to go with 128 … Masataka Ohta
- Re: [irtf-discuss] Why do we need to go with 128 … Keith Moore
- Re: [irtf-discuss] Why do we need to go with 128 … Mark Smith
- Re: [irtf-discuss] Why do we need to go with 128 … Masataka Ohta
- Re: [irtf-discuss] Why do we need to go with 128 … Keith Moore
- Re: [irtf-discuss] Why do we need to go with 128 … Masataka Ohta
- Re: [irtf-discuss] Why do we need to go with 128 … Keith Moore
- Re: [irtf-discuss] Why do we need to go with 128 … Michael
- Re: [irtf-discuss] Why do we need to go with 128 … Phillip Hallam-Baker
- Re: [irtf-discuss] Why do we need to go with 128 … Robert Moskowitz
- Re: [irtf-discuss] Why do we need to go with 128 … Carsten Bormann
- Re: [irtf-discuss] Why do we need to go with 128 … Masataka Ohta
- Re: [irtf-discuss] Why do we need to go with 128 … Masataka Ohta
- What's the Internet's biggest flaw? (was Re: [irt… Keith Moore
- Re: What's the Internet's biggest flaw? (was Re: … Andrew G. Malis
- Re: What's the Internet's biggest flaw? (was Re: … Nico Williams
- Re: What's the Internet's biggest flaw? (was Re: … Masataka Ohta
- RE: Why do we need to go with 128 bits address sp… Pengshuping (Peng Shuping)
- Re: Why do we need to go with 128 bits address sp… John Levine
- Re: Why do we need to go with 128 bits address sp… Fernando Gont
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Keith Moore
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Fred Baker
- Re: [irtf-discuss] Why do we need to go with 128 … John Wroclawski
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Fred Baker
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Alexandre Petrescu
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… shyam bandyopadhyay
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… shyam bandyopadhyay
- Re: Why do we need to go with 128 bits address sp… Alexandre Petrescu
- Re: Why do we need to go with 128 bits address sp… Shyamaprasad Bandyopadhyay
- Re: Why do we need to go with 128 bits address sp… Scott Weeks
- Re: Why do we need to go with 128 bits address sp… Warren Kumari
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Alexandre Petrescu
- Re: Why do we need to go with 128 bits address sp… Alexandre Petrescu
- Re: Why do we need to go with 128 bits address sp… Fernando Gont
- Re: Why do we need to go with 128 bits address sp… shyam bandyopadhyay
- Re: Why do we need to go with 128 bits address sp… John Levine
- Re: Why do we need to go with 128 bits address sp… Alexandre Petrescu