TELoIP at Networking Field Day 15

No Networking Field Day would be complete without a presentation from an SD-WAN vendor. The technology is now established and maturing into a ubiquitous WAN solution across small and large enterprises alike, so at the upcoming Networking Field Day 15, I’ll be focused on how TELoIP, one of the presenters at the event, differentiates itself from its competitors.

TELoIP is a little different from most other SD-WAN vendors in that it offers a managed WAN solution and has its own cloud infrastructure into which customers connect. This isn’t a common approach among SD-WAN vendors, but it also isn’t exclusive to TELoIP. That’s why I’m really interested in knowing how they differ specifically from vendors using a similar approach but also how they’re better than the broader scope of SD-WAN providers.

I’m not going to explain what SD-WAN is other that to say that it’s basically an overlay on top of your WAN to allow for intelligent path selection based on link quality and other traffic engineering such as per packet flow aggregation. This is powerful technology that’s been running in production environments for several years at least at this point.

That means that my questions aren’t really about how SD-WAN works or what their secret sauce does to make the magic happen. Instead, I want to know how TELoIP treats SD-WAN as a separate function from WAN optimization and how that plays into security concerns.

It also means that I want to learn about their service delivery and how TELoIP works with providers of their solution to deliver the last mile between the TELoIP PoPs and the customer edge.

The SD-WAN component isn’t groundbreaking anymore. To me, the technology lost it’s sheen already. That doesn’t mean I’m not interested in SD-WAN or don’t recognize the benefits of the technology, it just means that I’m more interested now in service delivery and operational aspects.

I still have some technical questions in mind, but I’m looking forward to learning how TELoIP is positioning itself and why. Check out their website and their presentation at Networking Field Day 15 by tuning into Tech Field Day’s YouTube channel. Also make sure to follow the discussion on Twitter using #NFD15.

BGP Default Route Failover Using Reachability

Sometimes political, financial, or logistical hurdles determine how we solve networking problems. In these tricky situations we may not be able to solve the problem the way we’d prefer, but we still need to solve the problem.

In this post I’m going to look at how we can solve a WAN failover scenario¬†when we have a default route learned from both of our service providers and a reachability problem via our primary ISP.

(more…)

Amazon S3 Outage: We’ve All Been There

I’ve been thinking a little bit about the Amazon S3 incident. Not really the incident, actually, but the responses to it. More than once I read something along the lines of “I’m sure that guy got fired” with regard to the engineer who entered the fatal command.

Sure, that’s kind of funny for a quick tweet or in the greater context of a blog post on change control, but for me, I’m not sitting at my desk shaking my head right now. Instead, I’m reminded about the times I did the exact same thing (on a much smaller scale) and will probably do it again.

(more…)

How Do You Know That’s True?

About a thousand years ago, rather than configure routers, I taught high school English.

One day, instead of unpacking our favorite Shakespearean sonnet, I was sidetracked by a student who asked me how we know anything about electrons and how they orbit the nucleus of an atom. Apparently he asked his physics teacher the period before and got a pithy “electrons are the essence of a negativity.”

(more…)

My Network Cutover Soundtrack

Here’s a list of carefully thought-out pairings of songs for specific types of network activities like cutovers, refresh projects, and typical pain-in-the-butt network tasks.

Click on the network-y activity to listen, and make sure to have your sound at a decent volume. Most of these tasks take longer than the length of one typical song, so usually I’m listening to the entire album.

(more…)