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SDN is an Iteration that will Lead Innovations

I have stumbled upon a recent post from Greg Ferro on Ethrealmind, the post is titled SDN is not an innovation, it’s an iteration. I actually wanted to share this post because it kind of puts things into prespective. The word innovate refers to creating something that is new and disruptive. Innovations needs to come …

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Software-Defined Networks .. A Primer

SDN, Software-Defined Networking, the trending technology that some friends/colleagues of mine like to refer to it as “Still Does Nothing”. Let’s see if it does some thing. SDN has been a market hype for few years now.  Out of laziness, I ignored it in the beginning then I had to catch up a bit later …

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How to become a Network Engineer?

If you aspire to become a network engineer, this post is going to guide you in making up your mind. Read through. From the outside, the whole information technology profession can seem mysterious. Mentioning IT summons various images ranging from artificially lit cubicle farms to young professionals roller skating through well decorated lounge spaces that …

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Troubleshoot#2: Core Dumps for Network Engineers

Got a core dump file, please contact your TAC engineers for further support ! This is the common statement that we all see on vendors’ websites and in their recommendations and it definetly is true.  The reason is that a core dump file contains information that requires deep knowledge of the code of the cored …

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Cheat: your portable memory bank

How often do you find yourself scratching your head, trying to remember a command that you knew by heart but just can’t remember when you need it most? It happens for me quite often. Probably because I am aging or may be there is too much stuff in my brain attic. But I found a solution […]

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Making Sense of Broadband networks: PPPoE Explained

A bit of background First .. PPPoE stands for Point to Point over Ethernet and is the successor of PPPoA. PPPoE is simply a method of encapsulating PPP packets into Ethernet frames. The standard is defined in RFC2516 . IPoE is growing very quickly but as far as I can tell PPPoE is still very widely deployed model […]

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Understand MTU and MRU – The Full Story

MTU or Maximum transmission unit is a topic that pops up every once in a while in different discussions. Although it’s a simple concept, it causes a lot of confusion specially for those who are new to the field. MTU typically becomes an issue of concern during network changes, like adding new vendors equipment or […]

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Troubleshoot#1: Correlation vs Causation

Network problems can be as simple as follows: Ping neighbor. 100% packet loss. Check network interface, it’s down. Change SFP and you are done, problem solved   But they can also be complex; really complex .. In the past few years, I have had the unplanned privilege to see some of the shi**iest networking problems […]

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text2pcap – How to convert ASCII packet dumps to .pcap files?

Nothing in my experince is better at telling the real story than a packet capture. They tell exactly what is really going on and whether the configuration or changes are working  as expected or not. Sometimes an engineer needs to look at packet captures taken from devices that don’t generate .pcap files directly. Although with [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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Making sense of Broadband networks – VLAN Model

In the previous post we discussed the major considerations of a broadband network architecture. Now I want to discuss each of those points one by one adding some details. I will do this quick and might not be able to provide illustrations or configuration examples all the time due to time limits, so if anything [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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Making sense of Broadband networks – Part 1

Broadband is a hot topic in the telecommunications industry nowadays; it is becoming the bread and butter for so many service providers and mobile carriers with the big growth and penetration rates in these technologies in the recent years.  ( Check this report about the EOCD countries). Although it is that important, broadband topics probably [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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What can you learn in 5 minutes a day !

I  believe in minimalism and what small focused actions can make for a person and small steps is what Juniper learning bytes is all about. Learning bytes is an online learning resource launched last year by Juniper education services organization as a free service. The nice thing about the learning bytes is that they are focused, [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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DHCP client testing tool

DHCP is vastly growing in service provider networks for broadband subscribers, I had the chance to work lately with a some of these setups. The protocol is really easy to configure for broadband and provide many benefits.  It has lower overhead compared to PPPOE and it is much more suitable for Multicast services. For those [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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Few ways scripting can keep you sane

C’est la vie, it has been almost a year since I posted on the blog, a year full of change,  but here I am kicking up again with this simple short post about how scripting could save you time and effort on daily basis. I know most of you might be using those free or [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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The Importance of Networking

Networking is constantly being promoted throughout a huge range of industries, and is generally being seen as more valuable than ever before. However, all too often, it can be swept under the carpet. Those of us who work with technical industries can be particularly prone to not making the most of our networking opportunities. However, […]

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The Forgotten skill of technical writing

It’s a beautiful sunny day that puts a big smile on my face and I want to share it with you, so please put a big smile on your face now and before you continue. Your smile will make my day even brighter. OK, back to our post but keep smiling If you are reading [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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IPv6 Tutorial: IPv6 Unicast Address

To refresh our memories, we started our IPv6 tutorial  with an overview then we moved to IPv6 addressing in general and in this post I am moving deeper into IPv6 addressing types. As promised I will keep things simple and clean for you and for me, so let’s begin. Generally speaking IPv6 unicast addresses play [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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Life Follows a Plan, but the Plan is not Yours !

70 days passed since I wrote my last post about IPv6 Addressing. Long time, however I didn’t feel it. Maybe I even forgot what I was doing here or planning to do, those 70 days actually carried a lot of unplanned events. My last post was on 24th of January and on 25th of Januaray [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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IPv6 Tutorial: IPv6 Addressing #1

I am back again with the second post in this series, in the first post we had an overview of IPv6 and the need for it in the near future. In this post we will start breaking the technical ice of IPv6; I am going to discuss basic IPv6 addressing. This will need more than [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.

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IPv6 Tutorial: The overview

I will start from the beginning; two weeks ago I wrote a post claiming that IPv4 is depleting and IPv6 is coming soon; and since we are considering deploying IPv6 soon in our network, I thought it might be useful to write about IPv6 migration and transition strategies. Although, this is important but I think [...] No related posts. Related posts brought to you by Yet Another Related Posts Plugin.