255 - network and broadcast = 253

Because 0 is a number. 0 to 255 = 256.

Check these out.

IP Addressing and Subnetting Workbook 1.5 - Student Version
IP Addressing and Subnetting Extra Examples
IP VLSM Notes Powerpoint
IP VLSM Workbook 1.0 - Student Version

ok thanks. ive printed that workbook courtesy of my company ink and paper so il start working through it this afternoon
ive just learnt that il be starting my ccna course in 2 weeks time now instead of 2months time, so hopefully will give me a nice headstart.

cheers

Dude you have got to get subnetting under your belt before then.

Totally hit the subnetting link on the site up. Top left corner.

Uhhh... Why is it that I don't see any credit to the author of this tutorial in this post?

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blog.brokennetwork.ca

I changed the post author to it's rightful owner.

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thanks for your help, and the the author! i am working through the above pdf booklet and its seems to be clearing some things up. once i think i have the jist of it i will be sure to put time into the subnetting link at the top so i am confident with it. im lucky to have a job where i can spend a good few hours browsing the internet so il be sure to put that time to good use!

thanks again, im sure your hear from me in the near future!

Thanks

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blog.brokennetwork.ca

good news is can now work out subnet and broadcasts ip's, custom subnet masks, and find out network ranges.
seems to be in good time too as il be starting ccna at college this weeke probably. 3 hours a week in the classroom, i really cant wait!
teacher is well into cisco, i reckon he probably named his 1st born child cisco. now to keep practising and learning!

That's friggin awesome dude. Glad to hear you've got it nutted.

thanks for posting those links up from before. from looking at the working out its alot easier to work out what everything is, if you know what i mean! also good news is that the government are gonna pay for the first half of my coarse! very kind of them, i would feel a bit guilty as the uk is broke, but i dont cos its my tax money anyway! better than going to some bum who refuses to work and sits indoors drinking super tennants at 9am!

I agree you shouldn't feel guilty and should focus on giving back what you've received so far.

I can't wait to hear how the course is going. But knowing you've nutted out one of the first hurdles is awesome.