I need a guide to subnetting

CaffeineMeCaffeineMe Cedar Rapids, IA
edited August 2003 in Science & Tech
I'm attacking the MS Test 70-216 for a second time and I know I need to bone up on my subnetting skills. Anyone recommend a decent guide (online or dead tree OK) to explain subnetting and how to best implement it?

Comments

  • ClutchClutch North Carolina New
    edited August 2003
    Link :thumbsup:
  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited August 2003
    Anybody in the tech field needing focused boning up on topics that are written by certified specialists should look at two things:

    http://www.2000trainers.com/ offers one heck of a lot of explanations on focused topics that are of current and enduring value to know. Iven learned soem Linux things from them and they focus more on pro windows than Open Source stuff, including Microsoft Network, MCSE and equivalent, and network theory. They are not funded by a corporate sponsor, so donations would be appreciated but you are not bombarded with donation requests either. These guys also consult internationally and soemtimes travel and get tidbits not stressed here in the US. They use minimal email.

    Those folks who are in business IT need a free account with http://www.techrepublic.com/ . If I were in corporate IT a lot or a corporately focused IT officer I would pay them and get a full account. I have not tried their books or CDs, but have heard mixed things about them. Their free downloads area is also worth checking for hints, a couple consultant contract templates (which should be lawyer vetted for your own purposes and protection but which are written for consultants in the field and used with minor revisions).

    Brian ( Primesuspect ), I would also like to know what your neighborhood lawyer and you think of the Consultant contracts in Techrepublic's downloads area are if things get quiet later on.
    They are also THAT good and worth checking out-- even to compare with what you use now.

    Techrepublic was so good that CNET bought them and kept the main staff of the site. You will see why if you browse it-- it had been up for 2-3 year before purchase, and the staff are pro writters with tech certs who liked writting more than filed work-- the Gartner Group provides soem of their material and they have a plethora of email newsletters. This is not an enthusiast's site, 2000trainers has more for learners than enthusiasts do not plan on a tech career also, but I know some folks here want careers in tech and not just enthusiast material.

    John.
  • tophericetopherice Oak Ridge, TN
    edited August 2003
    Check out IP Addressing and Subnetting for New Users
    Document ID: 13788 from CISCO. It covers subnetting, CIDR, VLSM, etc. http://www.cisco.com/warp/public/701/3.html
  • tophericetopherice Oak Ridge, TN
    edited August 2003
    Here's another great resource. Understanding IP Addressing: Everything You Ever Wanted to Know from 3COM, with sample subnetting questions, Classfull vs. Classless addressing, VLSM, CIDR, etc. http://www.3com.com/other/pdfs/infra/corpinfo/en_US/501302.pdf
  • tophericetopherice Oak Ridge, TN
    edited August 2003
    If you can read binary just remember this simple formula.
    2^ (#of bits used)-2=# of subnets/hosts. Where '^' means 'raised to the power of' and the -2 is because the first address is the network or LAN address and the last address is reserved for broadcasts. By using this formula you replace the ^ with the # of bits used in either the network or host portion of the address space, depending on which one youre solving for, # of networks or # of hosts.
  • primesuspectprimesuspect Beepin n' Boopin Detroit, MI Icrontian
    edited August 2003
    This is the book that finally did it for me:

    http://www.amazon.com/exec/obidos/tg/detail/-/1928994016/qid=1061735438/sr=8-1/ref=sr_8_1/102-7319752-1799366?v=glance&s=books&n=507846

    After reading the first five chapters, I finally understood subnetting.
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