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Subnet help 13 Years Ago by bangor_boy … subnets. I think i have to extend the subnet mask to do this, I have worked through …bits left, to find the number of hosts per subnet mask I use the formula 2^9 = 126… hosts, so the first address for the subnet mask 0 is Subnet 0 - 132.132.0.1, address range…126 and the broadcast is 132.132.0.127 Subnet 1 - 132.132.0.128, address range is… Re: Subnet help 13 Years Ago by bangor_boy Right my working out is if i can fit in 2 subnet masks before i reach 255 in the last octet and have to increase the 3rd octet, I would divide 349 (not 350 as we are using subnet 0) by 2 this gives me 174.5 which i believe the subnet 350 id would be 132.132.174.128 Re: Subnet help 13 Years Ago by sknake …? Why are you wanting to create so many subnets? Each subnet (usually) burns up 2 usable IP address for the router… subnet problem 16 Years Ago by RaooF … put the clients who require internet in a separate subnet and another subnet for normal LAN clients. Can i go ahead this… Subnet Mask of an IP 16 Years Ago by farzanamfairy How we can find the Subnet Mask of an IP? Re: Given a subnet mask, how to verify if an IP falls in that subnet. 16 Years Ago by serkan sendur subnet info is not embedded to ip address, it is not in that context. subnet mask can be anything for a given ip address. subnet masks are used to group ip addresses. what you can know about ip address could only be its type like a,b or c. Re: Subnet help 13 Years Ago by bangor_boy Sorry i should say its 128 hosts - 2, 1 for broadcast and 1 for id Re: Subnet help 13 Years Ago by bangor_boy yeah its a practise exam question and thank you for your advice Subnetting: Finding the 1st and Last Address of the 500th subnet 12 Years Ago by drizzydrake …where i have to find the last address in subnet 500. Could someone explain how i could do…ve already done till C) a) Find the Subnet Mask = subnet mask is /17 since 9 bits are required…c) Find the 1st and the last addresses in subnet 1 = 1st Address 16.0.0.0, …**d) find the first and the last addresses in subnet 500** ps. the answers for D are: 1st … Network number and subnet 14 Years Ago by ITgirl2010 …that supports up to 90 hosts on each subnet. [/B] How do you Define subnet mask for this organization What is the… IP number for the Subnet number 421 explicitly in binary and decimal notation What is… IP address of the host number 68 on the Subnet number 421 What is the broadcast address for the… Re: Subnetting: Finding the 1st and Last Address of the 500th subnet 12 Years Ago by scudzilla Well, if the first subnet starts at 16.0.0.0, and it ends at 16.0.127.255, then it means the second subnet starts at 16.0.128.0. Then you get the pattern: for every subnet, add 128 to the third octet. You can add manually until the 500th subnet, or come up with a formula for that. How should I get 12th subnet from this(190.0.0.0/20) IP address? 10 Years Ago by Kingcoder210 Hi! I am learning about subnet mask. How should I get 12th subnet from this 190.0.0.0/20 IP address? To… address of 20 is 16. So 256 - 16 = 240. So subnet mask address will be 255.255.240.0. So what….0/19 Block size of 19 is 32. Subnet mask : 256-32 = 224 so subnet mask is 255.255.224.0 **32x6… Re: Network number and subnet 14 Years Ago by Windgator ….210.196/25 This is 68th host on the 421th subnet of 172.18.0.0/25 network made by Variable… Length Subnet Masking (VLSM) from 172.18.0.0/16 address giving….196 255.255.255.128 host 10101100.00010010.11010010.11000100 subnet mask 11111111.11111111.11111111.10000000 [End of File] Re: IP Variable Length Subnet Masking (VLSM) 14 Years Ago by Duki …So to start, you want to being with the subnet that will require the most addresses (in this case… your OUs). So we start by determining the subnet that will allow for at least 39 usable IP… addresses. In this case, the subnet would be 192.168.1.0/26 (i.e…with 192.168.2.192 So for the HQ subnet, we only need 13 computers, so we'll… Re: Determine if IP address is within a subnet 14 Years Ago by Intrade …. Make a function that accepts an IP Address, and the Subnet (Subnet Address and Mask) and have it return a bool. It… returns true if the IP Address exists in the subnet, or false if it doesn't. [code=c++] bool ValidIP… algorithm to determine whether an IP Adress exists in the subnet or not? Also, the following source(s) may help: [url… Re: Network number and subnet 14 Years Ago by freshfitz Where are you coming up with 421? A /16 subnet is 255.255.0.0. The ip would be 172.18.0.whatever Re: Network number and subnet 14 Years Ago by ITgirl2010 Yes That the part I mstly didn't understand I assumed that If the subnet number was 421 what would the ip address be Critiques for my subnet calculator 14 Years Ago by schwarznavy …all. I had an assignment to build a subnet calculator that would take (and validate) an IP…} for ($x = 1; $x <= $cidr; $x++) ## Build binary subnet mask from CIDR { @bin_subnet_mask = (@bin_subnet_mask, 1); } for ($x = $cidr …;\nHit 'Y' if you would you like to calculate another subnet: "; chomp($doagain = <STDIN>); } while … Re: Network number and subnet 13 Years Ago by Casper429 Windgators answer is accurate.. but i have a question on the last part.. How did you come up with the 42st subnet?? Did u use any binary conversion?? (Or is it just by dividing the number of subnets ) If you can please explain this.. Thanks Receiving multicast from a different subnet 13 Years Ago by darkwing … program works fine if the source is in the same subnet as my receiver. However if the source is on a… different subnet, my application just doesn't pick it up (even though… fine, whether or not the source is in the same subnet. So I am wondering if this is a Python specific… Given a subnet mask, how to verify if an IP falls in that subnet. 16 Years Ago by beckman16 Hi, I have a scenario wherein I need to give access of a system to the hosts of a subnet. For that I need to verify if the incoming request is from the IP which falls within the subnet. Is there some way to do that automatically using c# functionality. Migrating Subnet 17 Years Ago by UKLooney … site LAN via a low end cisco router. The private subnet, currently used by around 20 devices, is 192.168.10… an additional router for the interim to route the new subnet. 3. Is it wise to allow two subnets to share… Re: Given a subnet mask, how to verify if an IP falls in that subnet. 16 Years Ago by beckman16 It is like with given subnet 255.255.255.224, its not possible to have a host with IP 192.168.10.32. calculating broadcast address from IP and subnet mask 15 Years Ago by MacUsers … do is: [LIST] [*]get/detect the IP address and the subnet mask or CIDR [*]convert the mask to binary form [*]count… best way of getting [or detect] the IP address and subnet mask? Having said that, I mean which is OS independent… IP Variable Length Subnet Masking (VLSM) 14 Years Ago by csnorman … using the router (on a stick) and have its own subnet. The OUs computer accounts are; 1. Production 18 computers 2… 2 computers Using sub netting how can I create a subnet for each of these that will allow the ou subnets… Determine if IP address is within a subnet 14 Years Ago by cableguy31 I need to write code that can determine if an IP address is in a subnet based one the subnet address and mask. I don't even know where to begin with this, so any tips would be appreciated. Thanks. Class D and E subnet masks 14 Years Ago by jlovesfishiee Would like to ask if there's a definite subnet mask for both Classes D and E, or is it that the subnet mask will vary? Thanks. Re: Migrating Subnet 15 Years Ago by toric99 … when u want to add security to your lan (one subnet can not accecc to other without router or layer 3… Re: calculating broadcast address from IP and subnet mask 15 Years Ago by MacUsers … seems like one need to know the IP and the subnet mask/CIDR first to use it. I've already [kinda… Re: Class D and E subnet masks 14 Years Ago by MintyPoison There are no standard subnet mask for those 2 classes