Author Archives: Adam

Basic Routing Protocol Configuration in VRF Lite

Posted on July 24, 2013 by

You may recall me posting a basic conceptual article about VRF’s and VRF lite implementation. Well, I am finally back with some more advanced concepts. What good are separate routing instances without the ability to use routing protocols and share routes between routers? Let’s dive right in and see how it’s done! Continue reading →

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Administering EtherChannels

Posted on July 19, 2013 by

EtherChannels, Port-Channels, or Link Aggregation on Cisco switches is a popular and practical feature.  This allows additional capacity to be added to your network without upgrading hardware.  Unfortunately, however, it’s not hard to get confused or to cause an accidental network disruption when working with this feature. Before getting down in the weeds with the configuration, let’s look at the topology we will be working with: Configuration We have two switches.  In this case they are connected with two trunk ports each trunking VLAN 100.  Spanning tree is working as expected and one of the ports on SW2 is in … Continue reading →

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Advanced Network and IT Pranks

Posted on May 21, 2013 by

If you are like me you enjoy a good prank every now and again. It’s fun to outsmart a coworker, get them frustrated for a minute or two and the go on with your day. I have had a few pranks played on me as well and figured I would share a few of them here for entertainment sake. Not all of these are original but some are (as far as I know). Since this is a networking website the pranks are network related. I suggest NEVER doing any of these on production systems. You may laugh but your boss … Continue reading →

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Link Runner AT 2000 Review

Posted on May 8, 2013 by

When trying to resolve network issues away from your desk there are many approaches that can be taken. Having the right tools for the job makes all the difference of course. Previously I have always just carried a laptop for this. As part of a larger project we were able to roll in a Flunk Link Runner AT 2000. I have been very pleased with it so far when troubleshooting the basic connectivity issues. The Link Runner AT 2000 is a simple and easy to use network troubleshooting tool. It features cable diagnostics, switch discovery features, and IP connectivity tests … Continue reading →

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