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Another subnetting problem
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PotatoHead
You can call me Spud
Registered: Oct 2001
Location: SoUtHeAsT
Country: USA
State:
Certifications: A+, CNA 5, MCP x 3, MCSA, Net+
Working on: 70-216
Total Posts: 3206
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 Another subnetting problem
You have been assigned the IP address of 232.232.232.0. What custom subnet mask would you use to divide your network into at least 10 subnets with at least 8 hosts per subnet? '
What about this one - is it 255.255.255.224?
__________________
Peace Out
-=PotatoHead=-
A+, CNA, MCP, MCSA, Net+
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 12-22-01 09:40 PM
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Hippo
Practising member
Registered: Jan 2001
Location: Milton Keynes, England
Country: England
State:
Certifications: CCNA
Working on: Gave up with routing; gone switching instead.
Total Posts: 939
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Try 255.255.255.240.
Why?
Because .240 uses 4 bits from the last octet
(and 2^4=16)and gives you more than the 10 subnets required, and (2^4)-2 hosts per subnet = 14 hosts.
Cheers
hippo
__________________
No longer a Karaoke virgin
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12-22-01 10:46 PM
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Warfare
Cyber Warrior
M
Registered: Oct 2001
Location: London
Country: United Kingdom
State:
Certifications: Network+, college degree
Working on: CCNA, BSc Computer Networks & Communications
Total Posts: 514
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I'm not deep with subnetting yet, but here is what i found
I used 222.222.222.222 as example.
Couldn't create the number of subnets with the number of hosts you asked for.
IP Address : 222.222.222.222
Network Address : 222.222.222.0
Subnet Address : 222.222.222.208
Subnet Mask : 255.255.255.240
Subnet Bits : 28
Host Bits : 4
Possible Number of Subnets : 16
Hosts per Subnet : 14
Selected Subnet : 222.222.222.0/255.255.255.240
Usable Addresses : 14
Host range : 222.222.222.1 to 222.222.222.14
Broadcast : 222.222.222.15
__________________
Warfare Systems
Better Die Standing Than To Live Upon Your Knees
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12-22-01 11:22 PM
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PotatoHead
You can call me Spud
Registered: Oct 2001
Location: SoUtHeAsT
Country: USA
State:
Certifications: A+, CNA 5, MCP x 3, MCSA, Net+
Working on: 70-216
Total Posts: 3206
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Thanks hippo i see where i messed up now - I used 3 bits instead of 4
__________________
Peace Out
-=PotatoHead=-
A+, CNA, MCP, MCSA, Net+
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12-22-01 11:34 PM
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Imran4sin
Senior Member
M
Registered: Dec 2001
Location: Auckland
Country: New Zealand (Aotearoa)
State:
Certifications: Degree::BSc (Information Systems Specialisation and Computer Sci), CCNA , MCDBA, MCSE on server 2003
Working on: MCSE - Security, RHCT
Total Posts: 409
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 cool another one
Sup,
We got 10 subnets, therefore...we borrow 4 bits..how:
1 1 1 1
8+4+2+1 = 15
PHead.. u wont borrow 3 coz (
4+2+1 = 6
and 6<10 SUBNETS
(remember bits to be borrowed can be more but never less--okay)
Hence U get :
1111 0000 ==>240
And its a class C address:
hence:
255.255.255.240
Hope thsi helps;
__________________
____
Imran.
<You never know what U can do unless you try>
<work hard, harder untill sweat stings the eye>
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12-23-01 03:08 AM
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dmaftei
Senior Member
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Registered: Nov 2000
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Country: USA
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Working on: none
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Re: Another subnetting problem
quote:
Originally posted by PotatoHead
You have been assigned the IP address of 232.232.232.0...
232.232.232.0 is a multicast address; you cannot subnet multicast addresses.
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12-23-01 04:09 AM
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Clangashe
Senior Member
Registered: Nov 2001
Location: Adelaide
Country: Australia
State:
Certifications: ITIL,MCSE+sec W2K3, MCSA+Sec W2K3,MCSA W2K , CCNA, CNA, MCP NT4Wk
Working on: 70-299 then on to my Master's
Total Posts: 202
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12-23-01 11:37 AM
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