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[Steve]

I have added a page to the site that should help folks practice their subnetting skills. Check it out here practicesubnetting.php. Let me know if you see any issues or have a suggestion.

If you bloggers would mention it in your blog and maybe provide a perma-link, that would be appreciated.

Nice work!

[Steve]

Thank you.

[ristau5741]

suggestion, use cider in the question, /i.e 192.168.1.23/28
provide the subnet in the answer i.e. 255.255.255.240

makes it a bit more complicated, but drives home the CIDR to subnet mask translation
which is an important thing to remember.

[hunter_thom]

Looks great! Good call.

Yeah, my only thought would be (like ristau) to add the CIDR form. It would probably help newcomers make a 1-to-1 correlation between 255.255.255.252 and /30, for example.

[Steve]

suggestion, use cider in the question, /i.e 192.168.1.23/28
provide the subnet in the answer i.e. 255.255.255.240

makes it a bit more complicated, but drives home the CIDR to subnet mask translation
which is an important thing to remember.

Ok, Aubrey suggested that as well. I will get that implemented.

[Vito_Corleone]

I linked earlier, forgot to post.

Linked as well.

[Steve]

CIDR bits added and new step created in the 'Reveal The Work' section to help convert it. Anything else?

think you have just made me understand subnetting for the first time in 3 years

[Steve]

think you have just made me understand subnetting for the first time in 3 years

That's great to hear, thank you.

why is there no /11 /21 built into this?

dave

Thanks for implementing this Steve. I came across it by accident about 3 weeks ago but it looks great. When I first got into networking last August, I found subnettingquestions.com and was living by that for my subnetting practice but the one on this site is great as well. I really love the Reveal the Work option which should help subnetting newbs a lot!

Regards,
Keith

Btw, any chance of adding Class A and Class B address questions? A bit more thinking involved with those as opposed to Class C where you are only playing with the last octet.

[mellowd]

Btw, any chance of adding Class A and Class B address questions? A bit more thinking involved with those as opposed to Class C where you are only playing with the last octet.

There is no such thing as class anything these days...

I'm not sure I follow?

[mellowd]

Everything is classless these days

Gotcha. I guess not enough real world experience for me yet, still stuck in the books; wouldn't it still help to have 0-191.x.x.x addresses in the subnetting practice section so you have more bits to play with?

[Steve]

I plan on writing the code to for /9 through /30 when I get some free time. Glad people are finding it useful.

Thanks Steve