In the last weeks I was working closely with a Cisco Telepresence team to identify a issue regarding poor performance of the video systems. We did find pretty quickly the issue as being the failure of auto-negotiation of Speed and Duplex on the connection between Cisco switch port and Tandberg endpoint devices.
The original name of this video is “SDN controller DEMO”. I think the “demo” word there is a bit inappropriate used, as actually is more like a Cisco marketing video than demo. Don’t be so surprised, you know how Cisco promote their products.
For most of us, network engineers, the IT world means anything but art. Still, it seems that out there somebody think Wifi can be use to generate art. And they did a pretty good job.
I just upgraded to WP 3.4 and apparently you can now embed tweets in your posts. I will do this from time to time, when there is something that really capture my interest. I will add the [Twitter IT] prefix to this posts. IT in this case is not coming from Information and Technology, but from my short form of Interesting Tweet.
As you know from my previous posts, I’m trying to find time to gain some Juniper knowledge. During this “quest” I will add here some basic things about how to start working with Juniper devices. For now I know only the basics of Juniper configuration, but I hope that soon you’ll find here some more challenging scenarios.
It has been 4 years since I did register the FirstDigest.com domain and I want to mark this on the blog timeline. Nevertheless, the first tech post will arrive on this blog only on November 2008 as first I had different plans for this domain name. Those of you who were curious enough to read the About page knows already the domain story.
I found this great Infographic on Pinterest and I felt the need to share it though my blog. Even if not all information are 100% accurate of complete, it’s still a nice view that worth spending some minutes to check.
Let’s say that you have a Cisco router that you use as console server to connect to your devices in the CCIE testing rack. If you want to allow other people to access your rack for training and don’t want to mess explaining how to connect to different device from the console router, then you need a menu for easy access.
A few days ago I did encounter a task in one of these preparation workbooks for CCIE R&S Lab which was very tricky. This task is not a hard one and does not require extensive knowledge (it can be a CCNP level question as well), but the way the question is formulated can create confusion.I would appreciate your comments on this topic.
I was surfing the Internet in search of some good drawing representing packet header and I come across five excellent diagrams large enough ( 1050px wide ) to use digital but also for printing. The person behind these excellent drawings is Matt Baxter, but his site (fatpipe.org) is not accessible anymore. I found these documents on the Internet and I thought to add them here together.
Some time ago, I wrote about BGP Dampening and how this feature can improve the stability of the network. A lot happened since then and during my experience with different service providers I have seen that BGP dampening can help in the same measure at it can harm your network. An endless discussion can be started on this topic, but this is not what I want to do here.
I think all network engineers touched, if not used / patched, as least one time a fiber optic patch cord. As a network engineer you might not necessarily need to understand HOW fiber optic is working. It’s there and it’s working. You just need to plug the patch cord and that that’s it.
BGP Conditional Advertisement – it let the impression of a very complex task. Actually you will find it very easy to implement once you understand it.
In simple words I would say that BGP conditional advertisement it’s a feature that let you advertise a prefix to one of your neighbors if mandatory condition is satisfied. To implement this feature you must configure at least two of the following three maps:
I got today a newsletter from INE announcing a freebie. You have it below. Enjoy!
Free Streaming of our NEW
CCNA Voice Bootcamp Course!
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of the NEW CCNA Voice Bootcamp Course with CCIEx2 #14073
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The CCNA Voice class is an ultimate all-in-one solution for engineers pursuing the Cisco Certified Network Associate Voice (CCNA Voice) certification. This Video-on-Demand course includes over 25 hours of instructor-led content that will fully prepare you for the latest Cisco 640-461 ICOMM v8 certification exam. Please note that per Cisco CCNA Voice certification requirements, you need to have already met the pre-requisite of having a valid regular CCNA (Routing & Switching) status. View this course on your desktop computer, iPhone®, iPad® or other .mov video file format compatible devices. Learn more »