VLSM
dfjama
Banned Posts: 63 ■■□□□□□□□□
Good Day
I have quries regarding the concept of variable lenght subnet mask, in particular when any particular Ip address is put /and then number such as 10.1.2.0/24 (what is that about)
Can someone please enlighten me this idea before booking my exam?
Many Thanks Guys/Girls
I have quries regarding the concept of variable lenght subnet mask, in particular when any particular Ip address is put /and then number such as 10.1.2.0/24 (what is that about)
Can someone please enlighten me this idea before booking my exam?
Many Thanks Guys/Girls Comments
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gravyjoe
Member Posts: 260
I doubt that you'll have to know about VLSM for the 270. VLSM would be good to know to get your CCNA though.The biggest risk in life is not taking one. -
dynamik
Banned Posts: 12,312 ■■■■■■■■■□
He might have just posted in the wrong forum too.
That's not necessarily VLSM. It's CIDR notation. It just means there's 24 bits in the subnet mask, so /24 is equivalent to 255.255.255.0 or 11111111.11111111.11111111.00000000. -
RobertKaucher
Member Posts: 4,299 ■■■■■■■■■■
dynamik wrote:He might have just posted in the wrong forum too.
That's not necessarily VLSM. It's CIDR notation. It just means there's 24 bits in the subnet mask, so /24 is equivalent to 255.255.255.0 or 11111111.11111111.11111111.00000000.
Just to go a bit further with dynamik's explanation: 1111 1111.1111 1111.1111 1111.0000 0000 is 24 1s, so a 24 bit subnet mask. 1111 1111 in binary is 255. So 255.255.255.0 is the human (decimal) form for 11111111.11111111.11111111.00000000
I did see one "VLSM" question on my 270. It was not a true VLSM question, just had to know what the correct subnet mask was based upon a diagram and the output of IPCONFIG /ALL.