EIGRP OTP example

In this post id like to provide an example of a fairly new development to EIGRP which is called EIGRP Over The Top (OTP). In all its simplicity it establish an EIGRP multihop adjacency using LISP as the encapsulation method for transport through the WAN network.
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EIGRP Query bounding.

In the process of restudying EIGRP as a protocol, and more specifically as to how it converges, you can’t avoid running into the saying “Remember to bound your queries!”. From a conceptual point of view its fairly easy to understand that the further out you ask for a prefix the longer the convergence process will take.
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ESXi Server Build

With the release of the IOS XRv router, along with CSR (Cloud Services Router), its time that I go ahead and build myself a virtualization solution. To that effect, I have just ordered the components for a home build server, which was the cheapest, not to mention most silent option available.
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Short update

Its been a long time since my last update. I apologise for this. It wasnt my intention, it just sort of happened. In the meantime I have tried the CCIE SP lab and didnt pass it, so I am still studying for my next attempt which is comming up shortly.
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First take on SDN

I have been very quiet when it comes to the topic of SDN (Software Defined Networking). However, these days you can hardly go through your day without spotting an article about it. The reason I have been quiet is pretty simple.
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Cisco to sell Linksys to Belkin.

Yesterday it was announced that Belkin intends to purchase the Linksys division of Cisco’s hands. I for one, am very happy to see this happen. I think that for Cisco to be really great, it needs to focus on its core competencies, which does not include home networking equipment.
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Gold Nugget's, courtesy of Arista

I think the video below is worth going through for a couple of reasons. First off, it explains one networking company’s strategy towards SDN (Software Defined Networking). Its a great academic concept with lots of potential. However there’s no real push for it from customers (at least the customer base of Arista).
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Week on the wire – Week 10.

I think one of the most important things this to happen this week, was a public announcement from the boss of TeliaSonera. He announced that they would in the near future, start to charge people for any VoIP calls they would make through their broadband services.
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Week on the wire – Week 7.

A couple of things i have found interesting this week. The first one is that Intel is still in the game for making NIC’s. Even though they are doing some good ones in the server space, this batch seems to be targeted at the entry-level.
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Cloud enabled task management.

Finally. I have been using Things as my task management program for about 5-6 months. Its been better than not using anything at all, but what has really annoyed me quite heavily is its inability to do “Cloud” synchronization. The only form of synchronization from Things is through your wireless network.
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Odd EIGRP behavior

Update: By most examinations, this seems to be a bug. A clever guy at the Cisco support forums might offer the reason why this happens. Thanks to everyone for clearing this up! (https://supportforums.cisco.com/message/3519430) I was trying someting out the other day concerning EIGRP when i ran into an issue i still cant explain, so i would like to put it out there for scrutiny.
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Spanning-tree revisited

In this post i will shed some light on some spanning-tree info that has been floating around. But also an explanation why i choose a non-obvious answer to an IPexpert question. Specifically 2 things. The first one is the selection of ports and what _exactly_ selects the root port.
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Back from trip.

I am back from our company trip to Dubai. Dubai is a fantastic place. Its my first time in the middle east and it left a great impression. The whole city struck me as a proof-of-concept kind of city. They decided they wanted to do something great and they went ahead and did it.
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Some thoughts on Openflow

It seems that everywhere i look, be it on twitter, google+ or my regular reading list of blogs, Openflow comes up alot. What is Openflow? Openflow is an initiative to create a protocol and an API infrastructure to improve overall functionality of your network.
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Quick Tip: SPD

One of my friends told me about a feature called SPD and whether i knew about it. I didnt so i decided to read a bit more about it. SPD stands for Selective Packet Discard. As the name implies it has something to do with discarding packets.
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Thoughts on the SSL/TLS – Beast

It seems like every day, there are some vulnerability or crack announced on the geek news-outlets. For some reason, the recent publication of an exploit of a flaw in the SSL/TLS implementation in some versions, made me extra curious and it made me think a little harder about this whole security business.
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Time people.. Time…

Being a network consultant means getting access to lots of customers using a range of different equipment. One thing thats common for almost all of them, is the fact that the time is not in sync throughout their devices. As you may know, this is a real issue when you are trying to sort out a problem.
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IOS IPS

In this article i will try and setup a very simple example using Cisco IOS IPS (Intrusion Prevention System). As before, a simple topology consisting of 3 routers will suffice. They are configured as follows: Topology for IPS example. R1 will act as our source host.
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Thoughts on the Skype / Microsoft deal.

My take on the Microsoft purchase of Skype. Only last week i attended a mandatory briefing of Lync, Microsofts all-in-all wonder for communicating. Basically its a PBX, IM-server, Video-conferencing, Outlook-Integrator kind of a product. Basically they have taken alot of code from alot of different half-done products and thrown them into one big pile and put alot of marketing money behind it.
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