So we have the first 5 days completed now and it is time for some relaxing in the weekend and a bit of labbing as well.
So far it has been great. Brian Dennis is both a great teacher and a great guy as well. With Brian you don’t only get explained how things work, you get explained WHY they work that way. He as a lot of background and knowledge and the good thing is he will show you also how things should work in production. He’s absolutely one of the top guys out there and I would recommend anyone to attend the class.
Some people like to take a bootcamp early to get their journey started but I would not recommend that. You will be expected to know the basics so if you have never configured frame relay before then this bootcamp is not for you. I would recommend to take it in your final stages of preparation or in the middle, no earlier than that.
Brian has a nice way of explaining things and he drew some pictures that just says it all. What could take people 2 pages to explain he just explained with one picture. I’ll try to put some things online later to show you what I mean.
For the first 5 days we have gone through L2, frame relay, OSPF, BGP and MPLS. Class runs from 9 AM to about 19 – 20 PM so in the evening you will be very tired. You also get some labs to complete and you can do that in the evening or leave it for the weekend.
During the OSPF section we discussed some interesting things about convergence. Many people falsely believe that convergence is about hello timers which it really isn’t. By default SPF will wait 5 seconds before it is run when receiving a LSA. To trim convergence you need to trim SPF. If you are using non P2P links then yes then you will have to rely on hello timers to detect link failure but in that case you would rather run BFD if you had that option as well.
That is all for now. I will post sometime when I get back from London as well.