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How to use GNU’s aspell to fix spelling errors in files

GNU's aspell is a very useful tool for fixing potential typos in files. It not only picks out your misspellings and displays them to you, but it offers you a list of potential corrections and applies your changes as instructed. And it often remembers the fixes that you've applied.Hopefully, you’ve spotted the typo in this post’s image. If you had a file containing the word “appertizers,” this clever utility would help you to spot and replace it.Say you had a file named "oops" that contained this typo:$ cat oops Please list the appertizers in alphabeticle order. If you asked aspell to check this file with the command “apsell check oops”, it would present the file contents with the word “appertizer” highlighted and offer the list below as options for correcting the error.To read this article in full or to leave a comment, please click here

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Better spelling with GNU’s aspell

GNU's aspell is a very useful tool for fixing potential typos in files. It not only picks out your misspellings and displays them to you; it offers you a list of potential corrections and applies your changes as instructed. And it often remembers the fixes that you've applied.Hopefully, you’ve spotted the typo in this post’s image. If you had a file containing the word “appertizers”, this clever utility would help you to spot and replace it.Say you had a file named "oops" that contained this typo: $ cat oops Please list the appertizers in alphabeticle order. If you asked aspell to check this file with the command “apsell check oops”, it would present the file contents with the word “appertizer” highlighted and offer the list below as options for correcting the error.To read this article in full or to leave a comment, please click here

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NDSS Highlights the Best in Internet Security Research

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Network Break 147: ONAP thunders Onwards, Reading Viptela Tea Leaves

Take a Network Break! On this week's show we look at ONAP getting even larger, read the tea leaves about Cisco's Viptela and digest Arista astonishing sales last quarter while you throw virtual donuts at us. The post Network Break 147: ONAP thunders Onwards, Reading Viptela Tea Leaves appeared first on Packet Pushers.

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What is KISS Principle ? Keep it Simple and Stupid ?

What is KISS Principle ? Okay it stands for Keep it Simple and Stupid but what does really it mean in networking ? Can we really make things simpler ?. Probably yes but should we ?   Let’s remember What Einstein said about simplicity.   ” Everything should be made as simple as possible, but no […]

The post What is KISS Principle ? Keep it Simple and Stupid ? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

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Lumina Networks Picks Up Brocade’s SDN Controller

Lumina gets the 200 customers that are using the controller.

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Face-off: CA Spectrum vs. SolarWinds NPM for network monitoring

Picking the right network-monitoring platform can result in better network performance, more efficient use of IT staff and improved end-user productivity, so it’s important to pick the right one.To read this article in full or to leave a comment, please click here(Insider Story)

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Face-off: CA Spectrum vs. SolarWinds NPM for network monitoring

Picking the right network-monitoring platform can result in better network performance, more efficient use of IT staff and improved end-user productivity, so it’s important to pick the right one.To read this article in full or to leave a comment, please click here(Insider Story)

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Face-off: CA Spectrum vs. SolarWinds NPM for network monitoring

Picking the right network-monitoring platform can result in better network performance, more efficient use of IT staff and improved end-user productivity, so it’s important to pick the right one.To read this article in full or to leave a comment, please click here(Insider Story)

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Evolution from PINs to PICs Cloud Networking

Networking is simply so cool again after decades of static and stagnant silo designs. The rapid acceptance of universal cloud spine across a variety of clouds and industry verticals is a testament to just how critical of a problem this is to IT. By adopting a clean sheet of modern methodologies and code with a programmable state-based foundation, we are embarking on the next frontier.

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Evolution from PINs to PICs Cloud Networking

Networking is simply so cool again after decades of static and stagnant silo designs. The rapid acceptance of universal cloud spine across a variety of clouds and industry verticals is a testament to just how critical of a problem this is to IT. By adopting a clean sheet of modern methodologies and code with a programmable state-based foundation, we are embarking on the next frontier.

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ETL is slowing down real-time data analytics

The data transformation tool known as ETL, or extract, transfer and load, is slowing down companies’ ability to do real-time data analysis, costing those companies business opportunities and making their analytics inefficient. That is the result of a survey of 502 IT professionals conducted by IDC on behalf of InterSystems Corp., a high-performance database management vendor. The survey also found that Changed Data Capture (CDC) technology is also slowing companies down and impeding their ability to do real-time data analysis. To read this article in full or to leave a comment, please click here

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ETL is slowing down real-time data analytics

The data transformation tool known as ETL, or extract, transfer and load, is slowing down companies’ ability to do real-time data analysis, costing those companies business opportunities and making their analytics inefficient. That is the result of a survey of 502 IT professionals conducted by IDC on behalf of InterSystems Corp., a high-performance database management vendor. The survey also found that Changed Data Capture (CDC) technology is also slowing companies down and impeding their ability to do real-time data analysis. To read this article in full or to leave a comment, please click here

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The Role of IoT Gateways in the Network

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ETL is slowing down real-time data analytics

The data transformation tool known as ETL, or extract, transfer and load, is slowing down companies’ ability to do real-time data analysis, costing those companies business opportunities and making their analytics inefficient. That is the result of a survey of 502 IT professionals conducted by IDC on behalf of InterSystems Corp., a high-performance database management vendor. The survey also found that Changed Data Capture (CDC) technology is also slowing companies down and impeding their ability to do real-time data analysis. To read this article in full or to leave a comment, please click here

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Did you see my Networkcareer.net Interview?

I recently made an interview with networkcareer.net  I talked with Daniel many things on networking, brief overview of my story , predictions for the future of networking, recommended community platforms for the network engineers and many other things ! This is a new website which provides many good interviews on networking.   There are many good […]

The post Did you see my Networkcareer.net Interview? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

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EVPN lab – EVPN-VXLAN to EVPN-MPLS stitching

Last big topic that I need to practice – Data Center Interconnect (DCI).
Fortunately I pretty confident in my skills in the MPLS L3VPN area, so I think I shouldn’t spend much time for this topic.
The most complex DCI option remains – EVPN stitching. In this topic I will show you my example of EVPN-VXLAN to EVPN-MPLS stitching (there is also option of EVPN-VXLAN to EVPN-VXLAN stitching, but configuration should be similar to my example).
EVPN stitching concept is pretty simple – you just need to configure two EVPN instances on each of DC Gateway devices (MX routers) and connect them to each other using Logical Tunnel (lt-) interfaces.
Scheme of my EVPN stitching lab:

Due to time constraints I’ll show you only the upper part of topology – stitching on vMX1 and vMX3 routers. Configurations of vMX2 and vMX4 should be exactly the same as this ones.
So lets see vMX1 routing-instances configuration:

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Query name minimization

One new thing you need to add your DNS security policies is "query name minimizations" (RFC 7816). I thought I'd mention it since many haven't heard about it.

Right now, when DNS resolvers lookup a name like "www.example.com.", they send the entire name to the root server (like a.root-servers.net.). When it gets back the answer to the .com DNS server a.gtld-servers.net), it then resends the full "www.example.com" query to that server.

This is obviously unnecessary. The first query should be just .com. to the root server, then example.com. to the next server -- the minimal amount needed for each query, not the full query.

The reason this is important is that everyone is listening in on root name server queries. Universities and independent researchers do this to maintain the DNS system, and to track malware. Security companies do this also to track malware, bots, command-and-control channels, and so forth. The world's biggest spy agencies do this in order just to spy on people. Minimizing your queries prevents them from spying on you.

An example where this is important is that story of lookups from AlfaBank in Continue reading

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Configuring BGP Route Maps

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EVPN-VXLAN lab – IRB functionality

Firstly, QFX5100 series doesn’t support EVPN-VXLAN inter-VXLAN routing, so I practice all IRB related topics on vMX devices. vQFXs acts as a simple L2 EVPN gateways.
This post continues the EVPN-VXLAN lab from the previous ones.

Full vMX IRB interfaces configuration: