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Tag Archives: networking
Administering EtherChannels
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
Link Runner AT 2000 Review
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
Windows NPS Radius Authentication of Cisco Prime Infrastructure
As part of a recent network upgrade I was able to get Cisco Prime Infrastructure included in the moneys for the project. I love new systems to play with, of course, and immediately got to work checking out all the bells and whistles. Needless to say, it wasn’t long until I got tired of remembering the root credentials and began looking at RADIUS authentication for some help. Additionally, I’m kind of the security guy too and knew I was breaking my own rules by not having individual user logons in place. Continue reading
Cannot Connect to Brand New ASA
I recently experienced an issue making a connection to a brand new, factory default, just out of the box ASA firewall. “Connect using a browser and the URL https://192.168.1.1” did not work like the quick start guide suggested. The solution was simple but somewhat elusive if you don’t know where to look. Continue reading
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