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Category Archives for "Networking"

Cumulus Networks Open-Ended NCLU Net Example Command

NCLU is the always helpful Network Command Line Utility. It’s a command interface for our products and platforms that’s designed to provide direct, simple access to network configuration information. Thus, NCLU supports both inspection and modification of Cumulus Networks configuration data. Better yet, NCLU is easy to customize for local environments and naming conventions using its net example facility.

NCLU Overview

In general, NCLU enables users at the command line to learn about current configurations, and make changes or additions to such configurations. NCLU reports on Interfaces and can provide information about IP addresses, VLANs, Access controls, Trunking, STP, and more. At the routing level, NCLU provides information about Border Gateway Protocol (BGP) and Open Shortest Path First (OSPF) routing protocol settings and configurations. NCLU also offers information about services, including hostnames, NTP (Network Time Protocol), Timezone, and so on.

NCLU also includes comprehensive, context-sensitive help. Starting with the basic net command, users can learn about the various sub-commands available to them. Similarly, entering net <sub-command-name> provides help for that specific sub-command. This is how Cumulus (and other forms of) Linux delivers help information for users of complex commands like net.

In addition, NCLU commands provide control over configuration staging, Continue reading

BrandPost: SD-WAN: Optimizing User Experience for Managed Cloud-hosted Applications

Digital Transformation touches the network Applications are moving to the cloud – a lot of them. IDC estimates that by 2020, 90% of enterprises will use multi-cloud, i.e. multiple pub­lic and private cloud services and platforms, to support their ever-expanding application requirements. Service providers have a unique opportunity to leverage a high-performance managed SD-WAN solution to deliver the best possible cloud connectivity and therefore the best “quality of experience” to enterprise users.A new breed of applications with different needs Applications require a different quality of experience based on business priority, geography and security considerations, and consequently, they must be handled accordingly across the WAN. Some trusted business applications like Office 365, Skype and SAP can be sent directly to the internet with confidence, while recreational applications such as Facebook and Twitter might require higher security controls in order to meet enterprise security and/or compliance requirements. Simply put, the SD-WAN internet connectivity option must include the ability to differentiate traffic based on each application to ultimately enforce granular security policies.To read this article in full, please click here

Cumulus Linux Automation with Standard Linux Tooling

One thing’s for sure: The world of networking and networking administration is quickly changing. Part of this change is an evolution from old-school, proprietary centralized networking to more open options. This evolution has several different effects on the way network designers, administrators and engineers design and operate the network. This blog will focus on the different options available for modern automation, and how the Cumulus Linux approach provides the greatest amount of flexibility.

Breaking the Stranglehold

It wasn’t too long ago that the few big networking vendors had an almost unbreakable grip on organizational networking implementations, and correspondingly, with the way these implementations were managed. For most, this included the configuration of the various types of networking equipment using a command-line interface (CLI) and proprietary commands. Automating these types of solutions most often required either an offering developed by the vendors themselves, or the use of an application programming interface (API) written to interface with their products.

The question is whether this was a good thing or not. Generally, vendor-specific solutions have their advantages because they’re able to interface closely with the specific device code and take advantage of communications between the device coding team and the tools coding team.

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Chip-cooling breakthrough will reduce data-center power costs

Traditional passive heatsinks affixed to microprocessors for cooling don’t work well enough for today’s high-speed computations and data throughputs and should be junked, says a group of mechanical engineering researchers.A better option, they say, are "spirals or mazes that coolant can travel through" within tiny channels on the actual processor. That technique could massively improve efficiency, says Scott Schiffres, an assistant professor at Binghamton University in New York, in an article on the school's website. The school has developed this new method for cooling chips.To read this article in full, please click here

Chip-cooling breakthrough will reduce data-center power costs

Traditional passive heatsinks affixed to microprocessors for cooling don’t work well enough for today’s high-speed computations and data throughputs and should be junked, says a group of mechanical engineering researchers.A better option, they say, are "spirals or mazes that coolant can travel through" within tiny channels on the actual processor. That technique could massively improve efficiency, says Scott Schiffres, an assistant professor at Binghamton University in New York, in an article on the school's website. The school has developed this new method for cooling chips.To read this article in full, please click here

IDG Contributor Network: Zero-trust security adds necessary ingredients

Today's threat landscape consists of skilled, organized and well-funded bad actors. They have many goals including exfiltrating sensitive data for political or economic motives. To combat these multiple threats, the cybersecurity market is required to expand at an even greater rate.The IT leaders must evolve their security framework if they want to stay ahead of the cyber threats. The evolution in security we are witnessing has a tilt towards the Zero-Trust model and the software-defined perimeter (SDP), also called a “Black Cloud”. The principle of its design is based on the need-to-know model.The Zero-Trust model says that anyone attempting to access a resource must be authenticated and be authorized first. Users cannot connect to anything since unauthorized resources are invisible, left in the dark. For additional protection, the Zero-Trust model can be combined with machine learning (ML) to discover the risky user behavior. Besides, it can be applied for conditional access.To read this article in full, please click here

IDG Contributor Network: Zero-trust security adds necessary ingredients

Today's threat landscape consists of skilled, organized and well-funded bad actors. They have many goals including exfiltrating sensitive data for political or economic motives. To combat these multiple threats, the cybersecurity market is required to expand at an even greater rate.The IT leaders must evolve their security framework if they want to stay ahead of the cyber threats. The evolution in security we are witnessing has a tilt towards the Zero-Trust model and the software-defined perimeter (SDP), also called a “Black Cloud”. The principle of its design is based on the need-to-know model.The Zero-Trust model says that anyone attempting to access a resource must be authenticated and be authorized first. Users cannot connect to anything since unauthorized resources are invisible, left in the dark. For additional protection, the Zero-Trust model can be combined with machine learning (ML) to discover the risky user behavior. Besides, it can be applied for conditional access.To read this article in full, please click here

Network Discovery and Mapping

What is Network Discovery and Mapping? As networks are growing and getting more dynamic, mapping and documenting the devices that are connected to our network will be harder and much time consuming. I know paper work and the network documentation are the two tasks most network engineers, including myself hate, but these are necessary steps, …

Continue reading "Network Discovery and Mapping"

The post Network Discovery and Mapping appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Network Discovery and Mapping

What is Network Discovery and Mapping? As networks are growing and getting more dynamic, mapping and documenting the devices that are connected to our network will be harder and much time consuming. I know paper work and the network documentation are the two tasks most network engineers, including myself hate, but these are necessary steps, …

Continue reading "Network Discovery and Mapping"

The post Network Discovery and Mapping appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Network Discovery and Mapping

      What is Network Discovery and Mapping?   As networks are growing and getting more dynamic, mapping and documenting the devices that are connected to our network will be harder and much time consuming.     I know paper work and the network documentation are the two tasks most network engineers, including myself […]

The post Network Discovery and Mapping appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Stakeholder Workshop Held to Discuss Tajikistan IXP

The Internet Society in conjunction with the Open Society Institute Assistance Foundation – Tajikistan and the CAREN3 project organised an IXP workshop on 25 October 2018 at the Center of Written Heritage of the Tajik Academy of Sciences, in Dushanbe, Tajikistan. This followed on from a previous workshop held in 2017, and brought together nearly 30 stakeholders from local ISPs, civil society, and academia to discuss progress on the establishment of an Internet Exchange Point in Tajikistan.

I opened the workshop by summarising the IXP Environment Assessment report for Tajikistan that was commissioned by the Internet Society in 2017. This highlighted that Internet usage was below average for the region, and partly contributed to the low levels of economic growth in the country. The number of Internet users is estimated at between 15-40% of the population, Internet services are costly, and areas outside of the main cities do not have good access to broadband.

Internet uptake and use has been constrained by a variety of different factors, some of which are related to the geographic conditions (such as the landlocked mountainous nature of the country), and these have led to high prices for international capacity, high cost of services for the Continue reading

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