Posts Tagged 'Exhaustion'

January 19, 2012

IPv6 Milestone: "World IPv6 Launch Day"

On Tuesday, the Internet Society announced "World IPv6 Launch Day", a huge step in the transition from IPv4 to IPv6. Scheduled for June 6, 2012, this "launch day" comes almost one year after the similarly noteworthy World IPv6 Day, during which many prominent Internet businesses enabled IPv6 AAAA record resolution for their primary websites for a 24-hour period.

With IPv6 Day serving as a "test run," we confirmed a lot of what we know about IPv6 compatibility and interoperability with deployed systems throughout the Internet, and we even learned about a few areas that needed a little additional attention. Access troubles for end-users was measured in fractions of a percentage, and while some sites left IPv6 running, many of them ended up disabling the AAAA IPv6 records at the end of the event, resuming their legacy IPv4-only configuration.

We're past the "testing" phase now. Many of the IPv6-related issues observed in desktop operating systems (think: your PCs, phones, and tablets) and consumer network equipment (think: your home router) have been resolved. In response – and in an effort to kick IPv6 deployment in the butt – the same businesses which ran the 24-hour field test last year have committed to turning on IPv6 for their content and keeping it on as of 6/6/2012.

But that's not all, folks!

In the past, IPv6 availability would have simply impacted customers connecting to the Internet from a few universities, international providers and smaller technology-forward ISPs. What's great about this event is that a significant number of major broadband ISPs (think: your home and business Internet connection) have committed to enabling IPv6 to their subscribers. June 6, 2012, marks a day where at least 1% of the participating ISPs' downstream customers will be receiving IPv6 addresses.

While 1% may not seem all that impressive at first, in order to survive the change, these ISPs must slowly roll out IPv6 availability to ensure that they can handle the potential volume of resulting customer support issues. There will be new training and technical challenges that I suspect all of these ISPs will face, and this type of approach is a good way to ensure success. Again, we must appreciate that the ISPs are turning it on for good now.

What does this mean for SoftLayer customers? Well the good news is that our network is already IPv6-enabled ... In fact, it has been so for a few years now. Those of you who have taken advantage of running a dual-stack of IPv4 and IPv6 addresses may have noticed surprisingly low IPv6 traffic volume. When 6/6/2012 comes around, you should see that volume rise (and continue to rise consistently from there). For those of you without IPv6 addresses, now's the time to get started and get your feet wet. You need to be prepared for the day when new "eyeballs" are coming online with IPv6-only addresses. If you don't know where to start, go back through this article and click on a few of the hyperlinks, and if you want more information, ARIN has a great informational IPv6 wiki that has been enjoying community input for a couple years now.

The long term benefit of this June 6th milestone is that with some of the "big guys" playing in this space, the visibility of IPv6 should improve. This will help motivate the "little guys" who otherwise couldn't get motivated – or more often couldn't justify the budgetary requirements – to start implementing IPv6 throughout their organizations. The Internet is growing rapidly, and as our collective attentions are focused on how current legislation (SOPA/PIPA) could impede that growth, we should be intentional about fortifying the Internet's underlying architecture.

-Dani

July 22, 2011

Don't Let IPv4 Exhaustion Sneak Up on You

A few months ago, IANA exhausted its unallocated IPv4 address pool when it gave the last /8's to regional registries around the world. That news got a fair amount of buzz. Last month, some of the biggest sites in the world participated in World IPv6 Day to a little fanfare as well. Following those larger flows of attention have been the inevitable ebbs as people go back to "business as usual." As long as ARIN has space available (currently 4.93 /8s in aggregate), no one is losing sleep, but as that number continues decreasing, and the forced transition to incorporate IPv6 will creep closer and closer.

On July 14, I was honored to speak at IPv6 2011: The Time is Now! about how technology is speeding up IPv4 exhaustion and what the transition to IPv6 will mean for content providers. Since the session afforded me a great opportunity to share a high level overview of how I see the IPv4-to-IPv6 transition (along with how SoftLayer has prepared), it might be interesting to the folks out there in the blogosphere:

As time goes by, these kinds of discussions are going to get less theoretical and more practical. The problem with IPv4 is that the entire world is about to run out of free space. The answer IPv6 provides is an allocation pool that is not in danger of exhaustion. The transition from IPv4 to IPv6 isn't as much "glamorous" as it is "necessary," and while the squeeze on IPv4 space may not affect you immediately, you need to be prepared for the inevitability that it will.

-@wcharnock

May 26, 2011

IPv4 Justification Changes in IMS

When IANA ran out of IPv4 blocks in February, the belts tightened yet another notch in the IPv4 world. Regional registries such as ARIN have changed how they are allocating additional IPv4 blocks to ISPs, including performing more stringent reviews to ensure efficient utilization of current allocations and reducing future allocation sizes to more fairly distribute the remaining addresses. In turn, ISPs such as SoftLayer have to more closely monitor how we assign our IPv4 space to ensure efficient utilization by our customers. In order to maximize this limited resource, we have to make changes to the way customers order and receive additional IPv4 IPs.

Being down the line from ARIN, SoftLayer's networking department has to ensure we abide by all updated ARIN policies when we issue IPv4 addresses from our available pool in order to remain eligible to receive additional resource allocations. In addition to policy compliance, we are also focused on IPv4 conservation methods such as those referenced in RFC2050. Accordingly, we've made improvements to the way that we handle IPv4 requests to better streamline the process of collecting and reviewing usage and justification details.

Every SoftLayer server comes with one public IPv4 address, and until recently was assigned 4 additional IPs (/30) statically routed to that server. Our first step of IP conservation took place earlier this year, when we ceased the practice of automatically assigning the 4 additional IPs, and only issued them by customer request.

As we move forward, were trying to be as transparent with our customers about the IPv4 justification process as we can, so we're letting you know that additional justification requirements have been imposed on all ISPs by ARIN, and the best way we can meet those requirements is to have our customers follow the same guidelines. Being SoftLayer, we're doing what we can to automate and streamline the IPv4 justification process where possible, and are therefore implementing changes in the ordering system. Beginning on June 1, you will now be presented with a brief questionnaire whenever requesting additional IPv4 addresses. We must collect the requester's contact details, number of IPs that are expected to be used immediately and within the next year, as well as a brief description of how the IPs will be used. What happens next depends on the information you have provided as well as the current IP usage on your account: either the request is automatically approved and fulfilled, or a ticket is spawned for additional manual review by one of the folks in our networking team.

When a ticket is spawned for our network folks, we will get back to you within one business day, and let you know whether we need additional details from you in order to consider the request. These manual reviews will take additional time, depending on the size and complexity of request, as well as the quality of information provided. Please be prepared that there will be some cases where we will not be able to approve a request, such as when name-based virtualization can be used for IP conservation, or when services such as SEO, email campaigns, or VPN termination are the intended use for the additional IPv4 addresses.

If you're familiar with SoftLayer's previous method of ordering additional IPv4 addresses, you might feel like we're making you jump through hoops. These "hoops" are not intended to make the process arbitrarily more difficult. Rather, they're being put in place specifically to make sure we're in the best position possible to meet customer demands with our current IPv4 allocations, and get additional allocations from ARIN before they are completely depleted.

The ISPs that have no problems giving away IPv4 addresses right now without more stringent review are also going to be the providers that have the hardest time getting additional IPv4 blocks from ARIN, and therefore will have a hard time fulfilling future customer needs. At SoftLayer we are going by the philosophy that the more cautiously we approach IPv4 depletion by justifying our customers' needs for each IPv4 address, the longer our IPv4 pool will last to meet those needs.

This is a good opportunity to mention IPv6 as the long-term solution for IPv4 address depletion. The sooner that the public Internet becomes fully IPv6-enabled, the better off the resource constraint will become. The SoftLayer network is enabled for IPv6, and you may place an order for 18.4 quintillion free IPv6 addresses for your server via our web portal today!

-Dani

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