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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