/20 is a host, right!?

pizzafartpizzafart Member Posts: 97 ■■□□□□□□□□
Damn this Cisco Press book. It's packed full of good info, but I swear there are tons of errors too. CCNP BSCI Exam Certification Guide pg. 100 references /20 as a VLSM subnet of /16. How is /20 a network? It's referenced as such several times.

Have I gone stupid? This is the proper breakdown for a /20 mask right?


... etc

I hope I'm wrong and it's something obvious.
Any help is appreciated.


  • pizzafartpizzafart Member Posts: 97 ■■□□□□□□□□
    After some mind numbing, I figured it out. It was an example about turning off summarization so that summary routes don't block longest-prefix matches. The value should be /24. It's a long story (read the page if you have the book). There's another error at the bottom parrgraph on pg. 100, 1st line. /20 is totally wrong. It should read /26.

    Sheesh. What a hosed couple of paragraphs.
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