Archive for Above Layer 7

A Primer on IPv4 Scarcity

Philipp Richter, Mark Allman, Randy Bush, Vern Paxson. A Primer on IPv4 Scarcity, ACM SIGCOMM Computer Communication Review April 2015. Invited paper at SIGCOMM 2015. Not peer reviewed.

With the ongoing exhaustion of free address pools at the registries serving the global demand for IPv4 address space, scarcity has become reality. Networks in need of address space can no longer get more address allocations from their respective registries.

In this work we frame the fundamentals of the IPv4 address exhaustion phenomena and connected issues. We elaborate on how the current ecosystem of IPv4 address space has evolved since the standardization of IPv4, leading to the rather complex and opaque scenario we face today. We outline the evolution in address space management as well as address space use patterns, identifying key factors of the scarcity issues. We characterize the possible solution space to overcome these issues and open the perspective of address blocks as virtual resources, which involves issues such as differentiation between address blocks, the need for resource certification, and issues arising when transferring address space between networks.

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Internet Week Talk – The Japanese Net Community – an Outside View

At the ISP level, Japan is the most cooperative and communicative culture in the world. For example, a research study of BGP routing policy found all countries except Japan had 60-90% of ASs having some default routing. Japan had 36%. We believe this is due to coordination between Japanese ISPs and cooperation in sharing of technique.

JaNOG is a significant forum and a factor in coordination. Note that JaNOG meetings are as big, and sometimes bigger, as NANOG, the North American meeting.

I will never forget a JaNOG talk on hand tools, the tools we use when dealing with equipment in racks. Simple basic things such as powered screwdrivers, cable connectors, etc. This never happens outside of Japan, network operators in Europe and the United States are too self-important. Here, we share the techniques of our day-to-day lives. This attitude creates a harmony and consistency across the Japanese networking culture.

It is when we do not consult and coordinate openly that things go from amazingly good to varying shades of bad.

One example is the NTT NGN deployment, which was meant to encourage IPv6 deployment and to move the Internet forward technically. Unfortunately, though it was intended with very positive motives, it was done with insufficient technical consultation. It essentially made the *customer* IPv6 experience so bad, resulting in delays of one second, that Google, FaceBook, etc. have blacklisted Japan. This is unusually embarrassing as Japan was supposed to be a global leader in IPv6 deployment.

When it comes to coordination and cooperation above the engineering level, Japan is often a very negative point on the graph. When it comes to coordination with the government, it looks as if everything goes into a back room which accentuates all the disadvantages of the stereotyped Japanese isolation.

We have laws punishing Internet providers who host pornography which I am embarrassed to see as I walk down Book Street in Jimbocho. And it is right in front of children on the street. And it is right in front of me, and I am offended. At least on the Internet it can be avoided, since you have to hunt for it.

We now may put people in prison for downloading music. No other country in the world has such an extreme law. And who is being served by this? A back room deal between the media industry and the government with no public or Internet industry consultation.

The term “Internet Governance” is very dangerous. Our use of language constrains our thoughts. The Internet exploded and thrives because it is about cooperation and coordination, not hierarchy and control. And nowhere is this stronger than in the Japanese Internet technical community.

And we say that the Internet Wall of China is bad? We should look at ourselves first.

So there is the really good and the pretty bad. And of course it is not all black or white but has many colors in between. This leaves us with work to do. How do we create and maintain a more open dialog in the Japanese Internet culture

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RFC 6493

        Title:      The Resource Public Key Infrastructure 
                    (RPKI) Ghostbusters Record 
        Author:     R. Bush
        Status:     Standards Track
        Stream:     IETF
        Date:       February 2012
        Mailbox:    randy@psg.com
        Pages:      8
        Characters: 15491
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-sidr-ghostbusters-15.txt

        URL:        http://www.rfc-editor.org/rfc/rfc6493.txt

In the Resource Public Key Infrastructure (RPKI), resource certificates completely obscure names or any other information that might be useful for contacting responsible parties to deal with issues of certificate expiration, maintenance, roll-overs, compromises, etc.  This document describes the RPKI Ghostbusters Record containing human contact information that may be verified (indirectly) by a Certification Authority (CA) certificate.  The data in the record are those of a severely profiled vCard.

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The Message from APNIC 26 – Buy IPv4/IPv4 NATs Now

APNIC 26 attempted to focus on IPv6. It was a major disaster from Layer 2 to Layer 9. The network failed both at Layer 2 in the 802.11 and, for the few who managed to connect for a few minutes, applications at Layer 7 which should have worked did not. And, despite demonstrating on Tuesday that the IPv6 network did not work, APNIC staff persisted in turning the IPv4 network off on Wednesday. And they were proud of it. All in all, it was an impressive demonstration of non-professionalism and operational lack of clue.

And the panel held Tuesday morning was a complete train wreck. People walked away saying they were going home and telling folk that their companies should wait some years for IPv6 and consider just NATting IPv4.

APNIC has set a high bar that future IPv6 train wrecks will find hard to beat.

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Cisco Address/Economics Conference

My presentation today at the Cisco IP-Economics Conference.

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