New Domicile

So last night I decided to give the "other" popular blog site a spin and experiment with the differences from this one and that one. I must say, I really like the aesthetic presentation and layout of the other other white meat. It appears much cleaner and more professional looking.

I've been a blogger baby for 4 years now and i'm kinda getting sick of the same look. So for now I'll be working off of the new blog site and if I like it, Ill probably keep it.

So for now, you can find me here:

Route My World

Lab 101.1

Here's a pic of my latest rig so far. I just received my Dantrak rack (dantraknet.com) last night and the 2nd 2950 the night before. But because of some heavy studying, I haven't put it together. Nope, not even the excitement of getting a new rack can pry me away from learning about CDP. ;)

So, I plan to assemble the thing together tonight and start racking up all my routers and switches. For now, I don't really care if it looks neat or not. I'm just trying to get through my scheduled readings and reviews to get ready for my test. And I have a dilemma regarding where to put my equipment. Right now I'm using our nice dining table (that never gets used unless we have special guests visiting) and turned it into a learning center. So the whole table is covered with books, papers, writing materials, cables, and the picture above. I'm thinking of moving my whole base of operation in the extra room upstairs. I call it my jazz room 'cause that's where all my music equipments are (keyboard, guitars, extra computer, etc.) So the room is in even more bad shape as the dining table. I'll pay anyone $0.99 to help me clean it.

Anyway, it's gonna look sweet once I clean it up a little and organize everything.

Score!!!

Scored another router on ebay last night. I've been trying to get a nice 2509 to complete my lab (for now). This would add nice compliment to my collection since I'm probably be utilizing this the most. And I was able to get it for under $50, which I consider a pretty good deal seeing that most of the ones I've bid on went for well over $70.

For those who are not familiar with the 2500 Access Server Series, read this: Overview of the Cisco 2500 Series Access Server.

The Cisco 2500 series access server is a full-featured communication server with multiprotocol routing capability between synchronous serial, LAN, and asynchronous serial ports.

Ok, like that meant something. Basically, I will be using this nice gadget to provide access to multiple routers and/or switches. And how exactly am I going to do that? I don't know. Guess it's time to sit back, pick up the copy of the manual and start learning. I'll post an update of failures and successes when I get to it.

No beginning in sight

So the studying thing didn't work out like I planned yesterday. Until now I'm still on Chapter 9. I'm seriously considering postponing my test date now. Today I almost cancelled the test date but held back because I might still be able to pull off an upset. But who am I kidding, right? As much as I want to get those initials, I don't want to compromise true, solid learning just to get a certificate.

Well, I guess I need to perform another reality check and assess where I'm really at. It's just a little frustrating that some people from another forums that I frequent make you feel a little "inadequate", i guess, when I've been studying for nearly 2 months on only the CCENT part. I get some smarter-than-thou remarks wondering why I'm taking that much time when others prepare for the CCNA in less than 2 months and passing it. I mean, are you kidding me? How can you possibly digest so much information in less than 2 months and still pass a difficult test (unless you cheat, maybe)? I mean I know, it's an entry-level test, but I'd like to come out of it knowing that I have a very solid foundation for the knowledge required to advance to the next level.

So, I guess back to square one again, in terms of the study schedule. I think I'm gonna stretch out the learning phase a little bit longer so that I'm getting less info for more time as opposed to cramming too much info in less time. I think people in general learn better that way anyway. And I'll try not to pressure myself too much with achieving my goals as fast as I can. I think the idea is to achieve your goals the best you can.

Not Good

Progress Report: It has only been 3 days since I started my updated study regimen and already I am over 60 pages behind. I'm supposed to be done with Chapters 10 and 11 today, but I just started Chapter 9. This is going to get ugly tomorrow when I'm supposed to do chapters 12, 13, and 14. No way I can do that.

Well, I guess I'll call it a day and get some rest for an early 7am study session tomorrow. I plan to study all day so I'll log how much I can get done tomorrow.

A Little Break

So tonight my wife and I watched Fantastic 4: Rise of the Silver Surfer. I thought it was really good. Then again, there's not a lot of movies that I don't like. I'm easy to please like that when it comes to movies.

It was a nice little break for me. My wife has been dropping some hints that I'm sort of neglecting my family from all the studying I've been doing. My wife ended up falling asleep, as she always does when we watch a DVD. So right after I tucked her into bed at 11pm, I run back donwstairs to resume some reading and note taking. I also planned to get a little bit more exposure with IOS commands on the switching topics I'm currently on. I guess I still feel a bit of pressure to stick to my scheduled chapter readings and study topics. My test is coming up in eight days and I still feel so unprepared. I really am considering re-scheduling my test. But I'll see if I can stick it out til the very last minute before I have to re-schedule it.

Tonight I reviewed the following IOS commands:

line console 0
login
password xxxxxx

line vty 0 15
login
password xxxxxx

enable secret
enable password

debug
no debug all

show process
terminal monitor

reload

copy {running-config startup-config tftp} {running-config startup-config tftp}

write erase
erase startup-config
erase NVRAM

show system:running-config
show running-config

show nvram:startup-config
show startup config

If There Aren't Errors..

There would be no need for Erratas. ;)

So I was really bothered by the subnetting problem yesterday. I couldn't seem to figure out how they arrived with the solution it gave. I was very sure it was an error on the part of the author who created the problem.

Sure enough, I was googl-ing the same problem today and the exact same problem appeared on the Sybex CCNA Study Guide, 5th Edition. There it was staring at me as if I should've known it was there all along. And indeed, the problem was an error and the correction was published on their errata page. It seems like I've going to these pages using my own study guide as well. Anyway, here is the correct problem:

Which of the following IP addresses fall into the CIDR block of 110.68.4.0/22? (Choose three.)

A. 110.68.8.32
B. 110.68.7.64
C. 110.68.6.255
D. 110.68.3.254
E. 110.68.5.128
F. 110.68.12.128

Answer: B, C, E.
A Class A network address with a /22 is 255.255.252.0. The subnets in the third octet are 0, 4, 8, 12, etc. The network address in the question is 110.68.4.0, with a broadcast of 110.68.7.255, since the next subnet is 110.68.8.0. Answers B, C, and E are correct host IDs.

Now, working out the problem the Odom way:

The binary equivalent of the prefix notation for /22 is 11111111.11111111.11111100.00000000. Converting that to decimal, you would get 255.255.252.0.

For the network part, just copy the first 2 octets of the subnet number, that is: 110.68

For the host part (the 4th octet, since the binary value is 00000000, the decimal value is: 0

To solve for the 3rd octet, subtract 252 , the 3rd octet of the subnet mask from 256:

256
-252
4

That means that the 3rd octet of the subnet will increment by 4 for each consecutive subnet blocks. Looking at the list of the subnets we can find specific hosts that fall in the given subnet block above. Here are the first few range of subnets:

110.68.0.0 - 110.68.3.255
110.68.4.o - 110.68.7.255
110.68.8.o - 110.68.11.255
110.68.12.0 - 110.68.15.255
and so on...

Going back to the original question, it asks what IP address from the given choices fall in the subnet block of 110.68.4.0. If you look at the list above, the second range is what we want to compare the choices from. Using that, B,C and E are the correct answers.