This probably ends up being a 2-parter. It’s 6pm already, my dinner is coming soon, and I’m a little fried from the day at work. We’ll see how far I get. Here goes. Spanning-tree protocol (STP) is the language switches speak to be sure that there are no topology loops in the layer 2 network. […]
Tomorrow – Spanning Tree!
The next chapter I have to do the write-up on is Spanning Tree. Ugh. I already read it, and it was a bit of a beast. Lots of stuff I knew, but spanning-tree is one of those topics that I never quite learned as well as I should have. It was a handy thing to […]
OECG – Chapter 2 Definitions
VLAN – a virtual LAN. Ports defined to be a common broadcast domain. Can span multiple switches through the use of trunks. broadcast domain – devices that are on the same ethernet area. When a broadcast is sent to this area, everyone in the area gets it. Typically, one subnet per broadcast domain.
OECG – Chapter 2 “Virtual LANs and VLAN Trunking”
Good review of all the basics here: VLAN’s, starring DTP, 802.1q, ISL, tags, private VLAN’s, and more. Not a terribly long chapter, but good fundamentals to know. Definition of a VLAN – a group of ports that can span multiple devices, but are still a part of the same broadcast domain. Usually, you have a […]
Lab Equipment
I’m planning on building a lab with 2 6513’s, 2 3550’s, 4 3750’s, at least 1 3845 (I think I can put my hands on one), and 2 or 3 or 4 2600’s I have available. That’s not the hugest priority for me today as I have to get through the written exam. But…I’m going […]
Beat for Right Now
I also read chapters 2 and 3 in the OECG book this week (VLAN’s and spanning-tree), but I don’t have the energy to do the write-ups on them like I did for chapter 1 right now. Maybe a bit later. I think I’ll go balance the checkbook and pay some bills for now.
OECG – Chapter 1 Definitions
The end of each chapter encourages you to do certain things to help you retain the information. One of those things is to define a set of words they provide, and check your answers on the CD glossary. (Note – the only thing I can’t find on the companion CD that came with the book […]
OECG – Chapter 1 “Ethernet Basics”
I read this chapter through in a sitting and didn’t spot much I wasn’t already comfortable with. Although there’s a lot of details that you just don’t think about much that come back up like heartburn. Chapter highlights: