Yes, really. QoS has actually gotten some attention this year. After how many years of living in the dark and being feared by junior and senior engineers alike, we’re seeing some really cool technologies coming out for it.
It seems that Cisco Live is about the only thing I blog about in the last…well, few years. At least I’m still writing, even if it is twice a year. :)
I love going to Cisco Live every year. Without question, it’s my favorite event of the year. It’s a great event with great people and great things to do. With that said, let’s look at what could have been a bit better this year.
This year’s event had the usual stuff that everyone talks about – breakout session, keynotes, exams, Meet the Expert sessions. Cisco stepped outside of technology this year, though, with the theme of helping others.
I passed the ROUTE exam a few days/weeks/months/something ago and decided to pursue certifications of another sort for a while. The wife and I are trying our best to help the community through our ham radio training, so I decided to go down that path a bit further. One thing I was interested in doing is to do EmComm during declared emergencies. That meant I had to take two FEMA courses online to be allowed in the EOC. I thought they would be terribly boring, but I found them to be quite familiar.
There are three ways to manipulate the interface cost in OSPF. One is very direct, one changes the presentation of the interface, and the other changes the calculations for every interface.
When you configure OSPF network statements, IOS orders them most-specific to least-specific then does a top-to-bottom match of the interfaces. It doesn’t matter which order you put them in, the configuration will always be ordered with the longest prefix matches first. Lab time!
Let’s get an IPv4 default route into EIGRP. There are a few methods to do it. I hate most of them, though. I think it will be obvious which one I like. LOL
For both OSPF and EIGRP routers to become neighbors, their interface’s primary IP address must be on the same subnet. That statement is true. There is a subtle difference between the two, though.
I wanted to do some analysis of the EIGRP topology table last night, so I fired up a small lab. I was especially interested in how external routes appear there and compare to internal entries. Like all good scientific endeavors, the whole thing got derailed when I made a realization.