so if I want to get 258 is it 0.0.1.2 ? to Rick I got 510 coz I thought it's a 0.0.255.255 since my understanding each octet equal to 1 if all bits in that octet are up (1) sorry my mistake :)
Thanks to Matt :) On Tue, Oct 20, 2009 at 8:27 PM, Rick Mur <[email protected]> wrote: > The explanation from Mark is the best! Should make things clear to you. > I'm also pretty curious to how you get to 510 :-) > -- > > Regards, > > Rick Mur > CCIE2 #21946 (R&S / Service Provider) > Sr. Support Engineer – IPexpert, Inc. > URL: http://www.IPexpert.com > > > > On Tue, Oct 20, 2009 at 5:35 AM, Matt Hill <[email protected]> wrote: > >> HI Uli, >> >> Thats not actually in decimal. It's a 32 bit number in dotted decimal >> notation. Just like an IP address is normally dotted decimal, it can >> also be one binary 32 bit number... >> >> 127.0.0.1 = 01111111.00000000.00000000.00000001 >> = 0111111100000000000000000000001 >> >> Which we can make into decimal >> >> 2130706433 >> >> Try this one in your web browser and see what happens... >> >> 3494206055 :) >> >> So that's binary and decimal and dotted decimal explained... >> >> Same goes for OPSF areas... >> >> 0.0.1.1 = 00000000.00000000.00000001.00000001 >> = 100000001 >> = 257 >> >> Hope this helps. >> >> Cheers, >> Matt >> >> CCIE #22386 >> CCSI #31207 >> >> >> >> 2009/10/20 Uli <[email protected]>: >> > Hi guys >> > >> > I just watched IPexpert VOD and in ospf section scott say that we can >> use >> > binary instead of decimal for OSPF area. What make me confused is how >> can >> > 257 equal to 0.0.1.1 ? can someone please tell me how to calculate that >> > number coz from I know 0.0.1.1 is 510 ? >> > >> > regards >> > >> > uli >> > >> > _______________________________________________ >> > For more information regarding industry leading CCIE Lab training, >> please >> > visit www.ipexpert.com >> > >> > >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> > >
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