Russ White
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Russ White
HTIRW: Provider Peering and Revenue Streams (Part 1)
In the last post in this series, I described several types of providers — and even how those descriptions are no longer really “pure,” for the most part (although NTT, for instance, is a pure transit provider that only offers a few services throughout the world). For each piece of a provider’s business, then — […]
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Thinking Through Title II Reguation
Over at CircleID, Geoff Huston has a long’ish article on Title II regulation of the Internet, and the ideals of “net neutrality.” The reasoning is tight and strong — his conclusion a simple one: At its heart, the Internet access business really is a common carrier business. So my advice to the FCC is to […]
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Now that We’ve Buried the Seven Layer Model…
“But the seven layer model is still useful for teaching networking…” So ran the most common reaction to my post last week about the seven layer model being dead. But let me ask something — how useful is the seven layer model for teaching networking? It doesn’t match the TCP/IP stack, it doesn’t account for […]
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The Seven Layer Model is Dead
Whether we have the funeral in New Orleans style (with a lot of brass and, well, other stuff), or in the more somber style we’re all so accustomed to– or even perhaps dance down the road singing, “ding dong, the model’s dead” — it’s time to pack the seven layer model into a virtual coffin […]
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Network Admin in Cary NC
I’m helping a company (as a favor) that’s looking for a network administrator in the Cary, NC area. The company is moving from another area, and hence rebuilding their office and backend systems. They rely heavily on their IT “stuff,” as they’re essentially in the information business. Please send me an email if you’re interested […]
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RFCs You Should Know: 6250
Most RFCs are deeply technical — and they follow the “Yaakov rule” for intelligibility (if you didn’t write it, or you didn’t sit with one of the authors in a bar someplace to talk about it, you can’t understand it), there are a few here and there every network engineer should know. RFC 6250 is […]
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HTIRW: Provider Peering Types
One of the confusing aspects of Internet operation is the difference between the types of providers and the types of peering. There are three primary types of peering, and three primary types of services service providers actually provide. The figure below illustrates the three different kinds of peering. One provider can agree to provide transit […]
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What is Service Chaining?
This post is in response to a comment on one of my previous posts on using MPLS in the Data Center. Service chaining has been getting a lot of press — and I’m encountering it a lot in the customers I’m talking to. What’s the big deal? To understand service chaining, let’s look at a […]
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HTIRW: DNS Security
In the last few posts on this topic, we’ve talked about the various bits and parts of the DNS system, from who pays to how it works to DNS tools. This time, we’re going to finish off DNS in this (probably record breaking for Packet Pushers) series, and talk about some various aspects of DNS […]
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Using Big Tools for Small Problems
BGP in the data center? And MPLS? Are you insane? Well, maybe, yes. But then again, I’ve been known to do a lot of crazy things in my time. Isn’t MPLS a core and edge service provider technology, while VXLAN is an enterprise data center technology? But let’s begin with this idea that technologies are […]
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HTIRW: DNS Reverse Lookups and Whois
In our last episode, we discussed how DNS is paid for in the real world — who builds, maintains, and manages all those servers that allow us to put in a domain name, and end up with a web page? This post will look at two other tools or protocols in the DNS system that […]
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Pervasive Monitoring
In May, the IETF published RFC7258, Pervasive Monitoring Is an Attack. No matter where you stand in regards to the IETF process (observer, confused, or, like the pig making breakfast for the farmer — completely committed), this is an odd RFC. In fact, it was probably the single most discussed RFC draft in recent history, […]
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HTIRW: The Business Side of DNS (2)
</a>continued from part 1 The top level server is either paid for by the domain owner (if they are managing the TLD name space internally), or by the company contracted to manage the TLD name space. This accounts for the top level servers in our diagram. What about the thirteen root servers? These are owned […]
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HTIRW: The Business Side of DNS (1)
So your host queries a DNS server to map the name to a location (an IP address), which sets off a chain of queries across a number of servers throughout the Internet. But who pays for all these servers, and how do they make money? To understand the answer to these questions, we need to […]
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HTIRW: DNS Lookups
Note: Some of this will be really basic for a lot of folks, but bear with me — in looking at the entire system as a system, there are going to be parts of each piece you’ll already know, and other parts you don’t know. Let’s begin where most users will recognize they’re interacting with […]
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It was Inevitable…
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The post It was Inevitable… appeared first on Packet Pushers Podcast and was written by Russ White.
Why Internet Standards are Still Important
Vidya Narayana, in a piece at Gigaom, said recently: So, why did I actually stop contributing to standards definitions? The primary one is the fact that while the pace at which standards are written hasn’t changed in many years, the pace at which the real world adopts software has become orders of magnitude faster. Standards, unfortunately, […]
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HTIRW: Overview
Okay, so we all know some little slice or another of the Internet. But how do all these slices really fit together? How does each player in the system make money by getting your device to connect to someone else’s server to grab content (whether or not you just asked for it)? Let’s put it […]
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Ordered FIB
In a past post, we’ve discussed microloops in link state protocols. If we examine a small ring topology (if you come to my Interop talk, you’ll discover that ring topologies are the heart of network convergence), we can see where and how a microloop forms. If the link between A and B fails, A and […]
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Review: Hadoop Operations
Hadoop Operations Eric Sammer Hadoop is one of those applications all data centers seem to need to support – and there is a lot of information out there about how Hadoop works, how to use it, and how to build Hadoop systems. From these, it’s pretty easy to glean a general set of requirements for […]