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Category Archives for "Networking"

Cisco CEO: “We are still only on the front end” of a new version of the network

Fresh off a positive earnings call that saw Cisco report $11.9 billion in revenue for the 2Q 2018 – a 3 percent increase from the same quarter in 2017 and the first time in 6 quarters the company reported year-over-year sales increases – CEO Chuck Robbins has a lot to crow about.  First of all, the company's most strategic new direction: The Network. Intuitive, more commonly known as intent-based networking is rapidly finding acceptance amongst customers, Robbins said.+RELATED: Getting grounded in intent-based networking; What is intent-based networking?+To read this article in full, please click here

Cisco CEO: “We are still only on the front end” of a new version of the network

Fresh off a positive earnings call that saw Cisco report $11.9 billion in revenue for the 2Q 2018 — a 3 percent increase from the same quarter in 2017 and the first time in 6 quarters the company reported year-over-year sales increases — CEO Chuck Robbins has a lot to crow about.  First of all, the company's most strategic new direction: The Network. Intuitive, more commonly known as intent-based networking is rapidly finding acceptance amongst customers, Robbins said.+RELATED: Getting grounded in intent-based networking; What is intent-based networking?+To read this article in full, please click here

[Video] Configure Data Center Devices with PowerShell

PowerShell started as a tool to automate Windows servers. It was picked up by VMware (and others) as a platform on which they built their own solutions (PowerCLI and PowerNSX)… but did you know you can use it to configure data center infrastructure, including NX-OS switches, SAN networks, and Cisco UCS?

In the Configuring Data Center Devices with PowerShell video, Mitja Robas described how to do that, and provided source code for all his examples.

You’ll need at least free ipSpace.net subscription to watch the video.

Watch the video

Musical Chairs Playing Tetris

Introduction ASERT has discovered new command-and-control infrastructure controlled by the APT actors behind the Musical Chairs campaign.  The security research community has associated these actors with significant campaigns in the past, including the pivotal Night Dragon campaign reported on by McAfee in 2011.  The actors […]

Musical Chairs Playing Tetris

February 20, 2018: This blog has been amended since it was originally published on February 15, 2018. This version removes the association with the APT group responsible for the Night Dragon campaign that we had incorrectly made. We thank the research team at Palo Alto […]

What is a Linux ‘oops’?

If you check the processes running on your Linux systems, you might be curious about one called "kerneloops." And that’s “kernel oops,” not “kerne loops” just in case you didn’t parse that correctly.Put very bluntly, an “oops” is a deviation from correct behavior on the part of the Linux kernel. Did you do something wrong? Probably not. But something did. And the process that did something wrong has probably at least just been summarily knocked off the CPU. At worst, the kernel may have panicked and abruptly shut the system down.For the record, “oops” is NOT an acronym. It doesn’t stand for something like “object-oriented programming and systems” or “out of procedural specs”; it actually means “oops” like you just dropped your glass of wine or stepped on your cat. Oops! The plural of "oops" is "oopses."To read this article in full, please click here

What is a Linux “oops”?

If you check the processes running on your Linux systems, you might be curious about one called "kerneloops". And that’s “kernel oops”, not “kerne loops” just in case you didn’t parse that correctly. Put very bluntly, an “oops” is a deviation from correct behavior on the part of the Linux kernel. Did you do something wrong? Probably not. But something did. And the process that did something wrong has probably at least just been summarily knocked off the CPU. At worst, the kernel may have panicked and abruptly shut the system down.For the record, “oops” is NOT an acronym. It doesn’t stand for something like “object-oriented programming and systems” or “out of procedural specs”; it actually means “oops” like you just dropped your glass of wine or stepped on your cat. Oops! The plural of "oops" os "oopses".To read this article in full, please click here

BrandPost: 5 benefits of SD-WAN optimization

SD-WAN is quickly approaching mainstream adoption by enterprises; Ovum’s research finds that about one-third of enterprises are trialing or using the technology. Once service providers gain SD-WAN experience, they also find the technology a versatile tool for their broader platform, services, and architecture plans.Interoute, a pan-European and global operator of network and cloud services, provides an example. At the beginning of 2017, the company updated its Enterprise Digital Platform – an evolution of the operator’s edge, core, and cloud offerings designed to fit together and accelerate enterprises’ end-to-end performance – with fully featured SD-WAN as an integral component. The provider’s platform offers customers commercial and service-level flexibility through a mix of on- and off-net, public internet, and private IP sites to a common fabric, and it optimizes performance of application delivery, including optional WAN optimization.To read this article in full, please click here

On the ‘net: Rethinking Firewalls

In January of 1995, Network Translation’s PIX firewall received the “hot product of the year” award from Data Communications Magazine. While the PIX was originally designed to perform Network Address Translation (NAT), doing for the IP host market what the PBX market did for the telephone, the PIX itself quickly morphed into the original appliance-based firewall. In those heady days in the Cisco Technical Assistance Center (TAC), we spent hours thinking through how best to build a Demilitarized Zone (DMZ) using PIX’s and routers so the network simply could not be penetrated. We built walls around our networks to defend them against the hoards of horseback riding invaders. @ECI

Don’t miss our online live Spanning-Tree Webinar!

Tune in Tomorrow, February 16, 2018 for a FREE online live Spanning-Tree webinar with Keith Bogart.

 

Deciphering Spanning-Tree Technologies
Starts February 16, 2018 at 10:00 AM (PST) 1:00 PM (EST)

Understanding the logic of 802.1d and how it builds a loop-free “tree” is critical to passing any Cisco certification exam. Presented by INE instructor Keith Bogart (CCIE #4923), this session will take you through that logic so that, given any bridged/switched layer-2 network, you can predict what tree will be formed. Ask questions live with an experienced industry expert!

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