EIGRP “FD is Infinity”
Let's take a look at EIGRP and the state a route can get into where EIGRP tells you “FD is Infinity”.
The Plain Text Productivity Experiment
I’m a big fan of plain text-based formats and tools, for a variety of reasons. As a result, I’ve moved almost all of my writing into plain text formats, primarily Markdown (MultiMarkdown, to be specific), and I recently spent a couple of months experimenting to see if a plain text-based productivity system would work for me as well. Here’s what I found.
<aside>I won’t go into a great amount of detail on why I wanted to see if a plain text-based productivity system would work, as I’ve discussed the merits of using plain text-based formats before (platform portability, application portability, longevity, etc.).</aside>
I first looked at Gina Trapani’s todo.txt system, which is plain text-based and has a thriving community built around its format. The todo.txt format is very straightforward and very simple—almost too simple. After trying it for a short while I found that it just wasn’t flexible enough to meet my needs.
A few weeks later, I stumbled on the TaskPaper format (named after the Mac app of the same name). Also plain text-based, the TaskPaper format also had a thriving community of applications and tools built around the format, and while also Continue reading
Network Automation Training
If you are a frequent reader of my blog, you know that last year I left my job to do something that I was intrinsically motivated to do. Unfortunately, because of this, I haven’t been able to write as much as I normally would. I do hope that changes. But, time is money now – literally. My time has been spent driving business, negotiating, writing Scopes of Work, building a website, managing finances, and producing quality work for customers, and I hope all of that continues.
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April CCDE Training class is going to start tomorrow
I am glad and excited to announce that my April 2015 online CCDE class will start tomorrow ( 07/04/2015) with 10 great guys. As I promised to them I limited to class to 10 , so everybody can ask as much as questions, join the discussions and share their comments. I will share their success… Read More »
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IPv4 Address Market Takes Off
As the available supply of IPv4 addresses dwindles, the market for these virtual commodities is heating up. In recent months, the pace of the address transfers has greatly accelerated as evidenced by RIPE’s table of IPv4 transfers, as well as the increasing number of IPv4 brokers facilitating the exchange of IPv4 address space. However, the transfer of IPv4 address space isn’t always problem-free and, in this blog, we’ll review this new trend and some of the issues that can arise.
Buying and selling IPv4
In 2011, when Microsoft paid $7.5 million for 666,624 IPv4 addresses as part of the Nortel bankruptcy, observers wondered whether this development would usher in the era of the commercial sale of IPv4 address space. As statistics from European registrar RIPE show, the market may have had a slow start, but we’re in that new era now.
RIPE’s table of transfers of provider independent IPv4 address clearly shows a rapidly increasing rate of transfers of IPv4 address blocks and unique IPv4 addresses. The following two graphs illustrate the uptick in recent months of address space movement. February 2015 saw that most organizational transfers (373), while November 2014 saw the Continue reading
Juniper Juices Up QFX Switches For the Traders
Another entrant in the battle for high-speed trading.