Docker network visibility demonstration
The 2 minute live demonstration shows how the open source Host sFlow agent can be used to efficiently monitor Docker networking in production environments. The demonstration shows real-time tracking of 30Gbit/s traffic flows using less than 1% of a single processor core.Handbook Updates
As many might have noticed, the Routing-bits Handbook updates have been sparse, and activity on the Routing-Bits blog even more so. A variety of contributors have led to this stemming from piracy, work, life, family, and relocation. With this I find myself at a cross-roads looking at the future the Routing-Bits website and the RB […]
Declaring IPv4 “Historic”
Is it time to declare IPv4 as an "Historic" Protocol Specification and move on with IPv6? Or is this so premature that the proposal is just an April Fools Day prank played out a few days too late?
SDxCentral Weekly News Roundup — April 8, 2016
Google writes a book on data center reliability.
How to use cloud storage as primary storage
This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter’s approach.
The cloud is the promised land when it comes to storage. A recent 451 Research report said AWS and Azure will be two of the top five enterprise storage vendors by 2017 with AWS as number two overall. But the challenge with using the cloud for primary storage is the latency between that storage and users/applications. To take advantage of the economics, scale, and durability of cloud storage, it will take a combination of caching, global deduplication, security, and global file locking to provide cloud storage with the performance and features organizations require.
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SD-WAN Market to Grow 90% in 5 Years
Forget the analyst hand-waving. Customers like immediate benefits.
How to improve network monitoring
Although vendor-written, this contributed piece does not promote a product or service and has been edited and approved by Network World editors.
I’m an aerospace engineer by degree and an IT executive by practice. Early in my career, I worked on missile hardware and simulators with some of the smartest minds at Marshall Space Flight Center in Huntsville, AL. An adage from those days still drives me today: “Better is the evil of good enough.”
In rocket science, an astronaut’s life is literally in the balance with every engineering decision. Being perfect is mission critical. But along the way, NASA engineers realized while perfection is important, it was not to be universally adopted, for several key reasons: It is very expensive, it draws out timelines, and it can result in extreme over-engineering.
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How to choose a software defined WAN (SD-WAN)
This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter’s approach.
Only 1% of companies use software-defined WAN (SD-WAN) solutions today, but Gartner says the promise of cost savings and performance improvements will drive that number to more than 30% by 2019. Why aren’t more businesses deploying now given the sizeable list of vendor tools available? It could be a lack of understanding about the varying approaches to bringing software-defined networking to the branch.
Before exploring those differences, let’s review why SD-WAN is so promising for branch environments. Compared to traditional WANs, SD-WANs reduce the complexity of network hardware at branch offices and centralize and simplify management. SD-WANs also allow businesses to augment or replace MPLS networks by using less expensive Internet links in a logical overlay and intelligently routing traffic over multiple paths directly to the Internet, rather than through a central data center. This improves application performance and makes more efficient use of bandwidth.
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The Design Mindset (4)—Interaction Surfaces
Before talking the final point in the network design mindset, ,act, I wanted to answer an excellent question from the comments from the last post in this series: what is surface?
The concept of interaction surfaces is difficult to grasp primarily because it covers such a wide array of ideas. Let me try to clarify by giving a specific example. Assume you have a single function that—
- Accepts two numbers as input
- Adds them
- Multiplies the resulting sum by 100
- Returns the result
This single function can be considered a subsystem in some larger system. Now assume you break this single function into two functions, one of which does the addition, and the other of which does the multiplication. You’ve created two simpler functions (each one only does one thing), but you’ve created an interaction surface between the two functions—you’ve created two interacting subsystems within the system where there only used to be one. This is a really simple example, I know, but consider a few more that might help.
- The routing information carried in OSPF is split up into external routes being carried in BGP, and internal rotues being carried in OSPF. You’ve gone from one system with more Continue reading
Packet Blast: Top Tech Blogs, Apr. 8
We collect the top expert content in the infrastructure industry and fire it along the priority queue.
Show 283: Deepfield Puts Network Telemetry To Work (Sponsored)
Today’s show, sponsored by Deepfield, is about leveraging real-time telemetry data from routers and servers to more efficiently orchestrate traffic, assure service quality, and secure your network.
The post Show 283: Deepfield Puts Network Telemetry To Work (Sponsored) appeared first on Packet Pushers.
Show 283: Deepfield Puts Network Telemetry To Work (Sponsored)
Today’s show, sponsored by Deepfield, is about leveraging real-time telemetry data from routers and servers to more efficiently orchestrate traffic, assure service quality, and secure your network.
The post Show 283: Deepfield Puts Network Telemetry To Work (Sponsored) appeared first on Packet Pushers.