Aaron's Worthless Words

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Aaron does lots of stuff and, therefore, does nothing well. He's trying, though. https://masto.ai/@aconaway

OSPF Notes - LSA Types

Yes, it is inevitable that I cover these. I’m sure network types will be next. Per my usual request, please correct my stupidity. Type 1 – Router : This LSA type lists all the routers by RID as well as the networks to which that router connects. Type 2 – Network : These

OSPF Notes - Message Types

I have had my nose deep in several books in preparation for my CCIE R&S written exam, so I haven’t been blogging much at all. Now that I’ve made it to the more familiar topics, I’m hoping to get some notes posted. I’ll start

Home-grown IOU Scripts

I’m sure you’ve all heard of Cisco IOU by now, and I’m finally catching up with the other bloggers of the world by mentioning it. It’s an executable version of an IOS image that runs on a Unix (or Unix-like) platform and it’s the backend

Cisco Live 2011 Schedule

For the first time ever, I’m headed to Cisco Live – the big Cisco users conference in Las Vegas! I usually don’t go to these things since I wind up just hanging out by myself, but I’m meeting all sorts of people there – from bloggers to Tweeps to

The Four Stages of Expertise (In Your Mind)

If you’ve worked in any particular area for some significant amount of time, you have probably noticed that how much you think you know about a subject has changed over time. This is nothing earth-shattering, and we’ve all had this realization over the course of our lives; it’

Some Exercises with IPv6 ACLs

ACLs in IPv6 aren’t that different from what you’re used to dealing with in the IPv4 world. You create a list of denies and permits for use with some other structure like filtering, PBR, and all sorts of other stuff. Let’s take a look at building an

News - Cisco Announces EOL Schedule for 6500s

This is a surprise, but Cisco has announced the end of life of the 6500 switches that we all know and love. Usually Cisco gives a platform a few more years after they decide to retire it, but the schedule only gives the 6500s one more year of service. I’