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Help with subnetting assignment.

Q: Help with subnetting assignment.

Given an IP address range, select the correct subnet mask for the scenario. IP address: 200.4.82.0/24 You need to create 6 networks with a minimum of 28 hosts per network. What is the correct subnet mask and the 3rd subnet range?

This is the answer I came up with. I just need to know if I'm on the right track...

225.225.225.0 - 255.255.255.224
200.4.82.64 - 200.4.82.95

Thank you in advance,
Denise

RELEVANCY SCORE 200
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A: Help with subnetting assignment.

Welcome

You are correct with the subnet mask. The netmask of 255.255.255.224 will give you 30 hosts minus 2 for network and broadcasting address. So your networks would be 200.4.82.0, 200.4.82.32, and 200.4.82.64.

How did you come up with the subnet mask?

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RELEVANCY SCORE 42.8

Is there anyone who can help me with sub-netting class A,B, and C.
Also, i need help with VLSM - Variable Length Subnet Mask.

if there is anyone who can help me please reply to this post.
Example....
Code:
Host IP = 192.168.3.219;; subnet mask: 255.255.0.0(/16?) i need to know how to find network address and broadcast address.
VLSM Example....
Code:

Host IP
Subnet Mask: 172.30.1.33
Number of Subnet bits: 255.255.255.252
number of subnets
number of hosts per subnet
number of usable hosts per student
subnet address for this IP address
IP address of the first host on this subnet
ip address of the last host on this subnet
broadcast address for this address
I need explanations pleaseeeeee.
and thank-you
tjronek1
 

A:Subnetting, NEED HELP Please

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Can anyone here help?
 

A:I need some help with subnetting.....

<bump>
 

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RELEVANCY SCORE 42.8

Hello
having a bit of a problem and was hoping someone could clear this up please.
now i thought if you subnetted your network of lets say
123.111.321.0/24 and subnetted it to 123.111.321.0/27, now we have eight subnets with 31 hosts each i believe and what i thought that this was like having seperate networks as in 192.168.1.0 and 192.168.2.0 ie cant talk to eachother without a router. but it seems that people are telling me that
123.111.321.1/27 can still talk to 123.111.321.60/27 over a switch, even though these are different subnetts. is this right as this is comming from a pretty reputable source.

Thankyou for you help
Soleous75
 

A:Subnetting

Without knowing how your network is set up, concievably the switch could be a layer 3 switch providing the routing between subnets or there can be a router on the subnets to route between them.

At the very basic level, if someone mis-configured their subnet mask, then there can be some be some overlap between subnets.
 

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RELEVANCY SCORE 42.8

Hello everyone, first time poster. I am currently working on some practice subnetting problems and need some assistance. I've filled out most of the answers myself, but I still need some help on a few of them.

The following questions are the ones I was able to answer:

Host IP Address - 195.70.16.93 - six bits have been borrowed to create the required subnets.

Class? - C
Default subnet mask? - 255.255.255.0/24
Subnet mask? - 255.255.255.252/30
Subnets created? - 64
Usable hosts per subnet? - 2
Network Address? - 195.70.16.92
Broadcast Address? - 195.70.16.95

These are the ones I am having trouble with:

The following addresses are either Network, Host, or Broadcast - answer appropriately.

1. 195.70.16.159
2. 195.70.16.28
3. 195.70.16.58
4. 195.70.16.164

How am I supposed to figure these out? Is there an easy way of knowing? Thanks in advance for any assistance.
 

A:Need help with subnetting!

The Network address is the lowest IP in the subnet; the Broadcast is the highest; all others can be assigned to hosts.
 

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RELEVANCY SCORE 42.8

IP 10.0.00 SNM 255.255.240.0 Need to know the subnet number 19.
I drew my bits and found out that I needed to borrow 12 bits, the way that I was though is that you subtract 1 from the desired subnet number, in this case 19-1=18*16(the interval) = 288. But the problem is that I cannot get a number larger than 256. Anyone in CISCO?? I really need help.

Thanks.
 

A:subnetting help!!

http://www.ralphb.net/IPSubnet/
 

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RELEVANCY SCORE 42.8

Reading this book currently at the chapter covering subnetting and am a bit confused. It explains the class B subnet of IP address

135.15.0.0
255.255.0.0

Now it talks about creating 2 to the 8th power or 256 subnetworks by borrowing 8 bits frrom the third octect resulting from:

11111111.11111111.00000000.00000000

to

11111111.11111111.11111111.00000000

with a new network of 135.15.2.0

What confuses me is I watched a DVD on subnetting some time ago that explained it very well and the instructor demonstrated splitting a class C network into 2 networks in a different way. What he did was instead of

255.255.255.0

he used

255.255.254.0

Both ways seem to make sense, but according to this book could this class B network be done the same way?
 

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RELEVANCY SCORE 42.8

Hi folks,

i'm new here because i have a problem with subnetting

I have a case but i'm not sure how to solve it....

Scenario

You are recruted as an network technician in the company University.

Your first job is to configure all the hosts in a network. You have to assign fixed ip addresses to
every host in the network. You must use IP version 4. Before you implement this network, you
have to test your network on a simulation tool: Packet Tracer 4.1.

The company made already an analysis of the network. The results of this analysis you’ll find it
here.

So you start your job with the following data.

The company has establishments at 4 different places, Amsterdam, Rotterdam, Eindhoven
and Nijmegen. There is a WAN connection between Rotterdam and Nijmegen, between
Amsterdam and Nijmegen, between Eindhoven and Nijmegen, between Rotterdam and
Eindhoven.

In the Amsterdam establishment are the Board of directors. In Amsterdam we need 17 pc.

In the Rotterdam establishment are the logistical service and the stock management. For
the logistical service we need 5 pc and for the stock management we need 15 pc.

In the Nijmegen establishment are the production department and the sales department.
For the production department we need 150 pc and for the sales department we need 20
pc.

In the Eindhoven establishment are the financial services and the administration. For the
financial services we need 8 pc and for the administration we need 33 pc.

The ip address you ca... Read more

A:Subnetting

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RELEVANCY SCORE 42.8

Hello, I am a current college student enrolled in a TCP/IP online course. Now that I am on my last week of class I realize I would have best learned this probably in an actual classroom. I have failed the last 3 quizzes for this course because my book does not seem to explain things to me in a fashion I can understand it. On the last quiz my teacher had 23 subnetting questions on something that was not taught in the book and I could not find online. I emailed him about my tests and how I have not grasped this and asked him to point me in the right direction but he told me I can retake these quizzes this week but I have to figure it out myself... I have my dad and brother helping me trying to understand this but still cannot get it.

Anyways I have come here to see if anybody here on the forums could be kind enough to help me figure this out and explain it to me.

Here are two examples of each that I need help with.

With 3 subnets required 22.6.5.5 has a custom subnet mask of:
With 258 subnets required 116.5.19.127 has a custom subnet mask of:

With 300 subnets required 176.97.17.129 what is the range of the 25th usable network:
With 30 subnets required of 216.8.16.128 what is the range of the 15th usable network:

Thank you to anybody that attempts to solve these and help explain it. It's much appreciated.
 

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RELEVANCY SCORE 42.8

If I have a Class C network for example 192.168.10.x with a subnet mask of 255.255.255.192 how do I determine the amount of subnets and hosts that are available?
 

A:Subnetting

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Hello. I'm looking for a guide that explains in detail step by step on how to subnet. Thanks.
 

A:Subnetting

Try here:
http://www.ralphb.net/IPSubnet/subnet.html

http://www.cisco.com/warp/public/701/3.html

http://www.linuxjournal.com/article.php?sid=6287

Hope this helps.
 

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Hey Guys!


It's been quite some time since I've posted here! I've been quite busy, and finally received my first certification ever, for PCs!

I'm A+ Certified now!

But to the point!

I've posted on a few other tech support sites I visit, and help out on occasionally, but nothing too serious has been posted.

I'm currently enrolled in a Cisco CCENT course at my school. I'm having major problems with subnetting and learning it.

If your IP is 192.168.1.1 / 64.24.96.103 (Public IP), how do you know that you're subnet is going to be 255.255.255.0? How can you tell at a glance that it's going to be that way.

I'm struggling really badly with this.


- Thomas

A:Subnetting on the fly...

Hi,

Re your private addresses (192.168.1.x): This is a class C address range (Private network) that is not visible on the internet.

A subnet of 255.255.255.0 means you can have 256 addresses (but you can't really use 0 and 255). You can actually use a different subnet if you want (assuming you needed that many addresses. For example, 255.255.0.0 would give you 256 x 256 (65536) addresses, all for your own personal use (again, as they can't be used on the public Internet).

If you wanted to limit the number of addresses you might use 255.255.255.192 which would split your network into 4 subnets. This can get complex, so you might want to look at Understanding TCP/IP addressing and subnetting basics or IPv4 - Wikipedia, the free encyclopedia if you really want to understand IPv4.

Regarding you public address:

Typically an ISP will use a subnet of 255.255.255.255. This means that you get only one address, the public address they give you. This is how they segment and allocate their finite IP address range. It also help with security from their perspective, as it helps prevent spoofing.

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RELEVANCY SCORE 42.8

given the ip address 172.16.0.0 and subnet mask 255.255.0.0 . how do i get 256 ip address? how much do i increment by?

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RELEVANCY SCORE 42.4

Hi Guys,

I'm new to networking. One of my assessments requires me to create a network and subnet it, depending on the amount of hosts on each LAN. We get given a random block of ip addresses to work with.

What i was wondering is: say i get a class b network to work with (172.0.0.0), and one of the LAN's need 60 hosts on it. Am I able to use the 255.255.255.192 subnet mask, because its total hosts is 62. Or is that subnet only allowed in class c addresses? If not, which subnet mask do I use, because the subnet mask range for class b addresses are 510-65534 hosts, and that is too many hosts for what I need.

I just need it cleared up for me,
Thanks
 

A:Subnetting question

frown888,
Welcome to TSG.
Yes, that is the reason for subnetting. You are trying to conserve ip space.
I have used this workbook, it's pretty good;
http://iws.collin.edu/sbutler/IP_WB.pdf
Once you get you head wrapped around subnetting, for test prep;
http://www.subnettingquestions.com/

If you don't get it at first look for different explations/tutorials.
 

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RELEVANCY SCORE 42.4

Thanks guys for bringing this kind of wonderful site up. Am an industrial maths student i need help on the activities of deploying a WAN or LAN network in organization that has one or two branches. am going to be using network model in operation research to determine the latest and the earliest time it will take to finish the project. please specify the time to complete each activity. thanks
 

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RELEVANCY SCORE 42.4

I am having a little trouble here. I am given the Host IP Address and Subnet Mask and am left to figure out the rest, I have filled in parts of it but am somewhat at a loss on what exactly I use to figure subnet bits and amount of subnets. Would the subnet bits be 30, 14, 6 or 0? and to figure amount of subnets I use the formula (2^n)-2 still? ( I may just be burnt out at the moment. ) Any help is appreciated.

After some digging, can anyone confirm this.. I figured my subnet bits to be 14 and my number of subnets to be 16,382? would that be right?
 

A:Solved: Subnetting?

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RELEVANCY SCORE 42.4

I have a network of 192.9.200.x with a subnet of 255.255.255.0. I want to break out the network for more hosts. I was thinking maybe 8 subnets with 254 hosts per subnet. My question is, can I start moving the network to the new subnets while leaving the other equipment on the current subnet mask without losing communication? Or is it an all or nothing where once I start I have to move every device and cannot do it in increments?
 

A:Subnetting question

You're not being very clear so let me clarify what i think you are asking.
Firstly it appears you want to subnet (which means split an existing network) your 192.9.200.x network into a further 8 subnets with 254 hosts on each. If this is the case then no you can't. At the moment you can only have 254 hosts on your existing subnet anyway so splitting it further will mean less hosts per subnet. If you were to subnet this network into 8 subnets you would need to borrow 3 bits from the host ID (4th octect) leaving you with only 5 bits for hosts. 2 to the power of 5 gives 32-2= 30 hosts per subnet. So you can subnet it to 8 subnets but you can only have 30 hosts per subnet.

Subnetting is about splitting a network into smaller "sub" networks. If for example you set the subnet mask to 255.255.0.0 then your network ID is now 192.9.x.x and you can SUBNET this further.

I dont see your point though...What are you trying to achieve? If all you want to do is create 8 different subnets with 254 hosts per subnet just assign 8 class C IP address ranges using a subnet mask of 255.255.255.0 IE your ranges would be:
192.9.200.x mask 255.255.255.0 gives you 254 hosts
192.168.1.x mask 255.255.255.0 gives you 254 hosts
192.168.2.x mask 255.255.255.0 gives you 254 hosts
192.168.3.x mask 255.255.255.0 gives you 254 hosts and so on...

If you want to truly subnet a network you would have a root network like 172.16.x.x (Class B) with subnet mask 255.255.0.0. Then you can subnet t... Read more

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RELEVANCY SCORE 42.4

Hello everyone,

I'm on subnetting.net trying to figure out subnetting through the amount of host and subnets required. I am mostly getting wrong answers by just a bit or two and I'm not seeing what I'm doing wrong. Some help would be greatly appreciated.

Example 1-

"What subnet mask would you use for the 172.0.0 network, such that you can get 170 subnets and 170 host per subnet?"

My work, 2048 1024 512 256 | 128 64 32 16 8 4 2 1

255.255. (class B)

Borrow from 256, so that's 9 bits. So convert 8 of those to 255 and the last one to 128 right?

So 255.255.255.128... Which isn't the right answer. Apparently the answer is 255.255.255.0.
Example 2-

"What subnet mask would you use for the 172.26.0.0 network, such that you can get 1670 subnets and 30 hosts per subnet?"

Class B again. So 255.255 from the start.

2048 1024 512 256 | 128 64 32 16 8 4 2 1

Borrow from 2048, That's 12 bits. Convert 8 of those to 255 and the next 4 from 128-16. Which is 240.

So 255.255.255.240. But it says the answer is 255.255.255.224.

any assistance on where I'm going wrong would be appreciated.

Thanks.
 

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RELEVANCY SCORE 42.4

Hi im am just posting in regards to a question about CIDR subnetting, ive included 2 printscreens and i just need someone to confirm or deny that the working out is correct, thanks

 

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RELEVANCY SCORE 42.4

This 'should' be really easy to do, right? I am trying to subnet my network into two indipendent networks. I have a fair understanding of networking, but subnetting is just killing me! I am running an Untangle server and have an extra router on hand to get the job done. Here's what the network looks like..... (please do not suggest adding another interface to the UT box. I don't have an extra on hand.)
AP --> UT Box (192.168.1.1 /27)--> Switch -->Router (192.168.1.97 /27)

Please guys/gals.... I NEED HELP WITH THIS in the worst imaginable way!
 

A:Subnetting woes....

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RELEVANCY SCORE 42.4

I've got an assignmet where I have to:
Subnet the network to which the IP address 137.88.88.77 belongs in order to create 300 subnets
I have to provide the following for each:
Subnet mask Subnetwork Address Range of usable Host IP
Addresses Broadcast Address Use?

I honestly am not sure where to start. Could someone help me. I would really like to understand this.

Thanks,
Senna
 

A:Trying to understand Subnetting. Need help

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RELEVANCY SCORE 42.4

Can someone explain to me how to find the usable IP addresses and default gateway for the is IP address and subnet mask?
65.43.87.8
255.255.255.248

Or tell me where to find it?
Thxs in advance
 

A:Subnetting an IP address

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RELEVANCY SCORE 42.4

I'm doing a worksheet in my CCNA class.

It provides the following:

142.226.0.15 with a subnet mask of 255.255.255.0

and asks:

Is this a valid IP host address? Why or why not?

Just having a little trouble with this question (I haven't gotten around to finish reading the chapter we're in the middle of just yet).

Thanks for the help.
 

A:Question about Subnetting (I think...)

142.226.0.15 is a Class B network host address. The only thing that might make this an invalid address is if it is a subnet address or a subnet broadcast address. The 255.255.255.0 subnet mask shows that 8 bits were borrowed to create subnets. This results in a subnet table that would look like this:
SN#0: Address: 142.226.0.0 hosts: 142.226.0.1 - 142.226.0.254 b'cast: 142.226.0.255
SN#1: Address: 142.226.1.0 hosts: 142.226.1.1 - 142.226.1.254 b'cast: 142.226.1.255

So, 142.226.0.15 lies within the valid host address range of SN#0, so it is valid. If you are using classful addressing in your router, however, the CCNA curriculum states that no SN#0 addresses can be used. Routers CAN use classless addressing, so this address really would work. It depends if the question is asked based on classfull addressing being used or not.
A Brayshaw, CCAI
Cisco instructor
 

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RELEVANCY SCORE 42.4

Hello guz, can any one give me a few tips on IP ADDRESSING AND SUBNETTING, your help will be greatly appreciated
 

A:How to ip address and subnetting

http://en.wikipedia.org/wiki/Subnetwork
 

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RELEVANCY SCORE 42.4

My friend and I are having a friendly debate that seems to have centered on a rather semantic issue. The point in question is whether an IP address 192.168.x.x/16 is referred to as a full class B or a supernetted class C. The following is the most recent stances we have taken via emails:

Me:
We know that any IP address beginning with 0-126 is a class A, 127-191 is class B, and 192-224 is class C. It doesn't matter if you subnet it or supernet it. By definition, the first bits of the first octet of the ip address will always designate it as a class a, b, or c...
You can't call an ip address starting with 192 a class B. I am confident that 192.168.x.x/16 should be referred to as a supernetted class C network. Just like 10.x.x.x/26 is a subnetted class A. Are you saying you would refer to 10.x.x.x/26 as a class C network?

Him:
Absolutely, a network of 10.10.10.0/24 would be a FULL class C. We are dealing in semantics, you are hung up on the classful way of defining the IP address and I am using the term "class C" to define the size of the network... my way happens to be the more common way now that clasfull networking is no longer used (except in books).

Can anyone clear this up for me? Should 192.168.1.10/16 be referred to as a full class B or a supernetted class C?
 

A:Subnetting Question

I vote for Ted. I mean, Cisco Kid. Yeah, you pretty much make sense. Your buddy sounds like the type of guy who would argue with you while running from a bear. You can thank Charles Darwin for letting you know that it'll be you who gets the networking job, and your buddy who gets eaten by a bear while trying to figure out if it's a brown bear or a black bear.

PS, don't run from bears.
 

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RELEVANCY SCORE 42.4

Just a quick run down on the subnet mask. For the longest... I've read ton's of material even doing a virtual training course by CBT Nuggets now, but I just don't understand why for example:

192.168.1.20
255.255.255.0
Why is the mask always 255? What does the 255 actually mean/determine? I know that 192.168.1.0/24 = a mask of 255.255.255.0 because 255 = 11111111 and 3x8=24 but I just don't understand why a mask is 255.

I saw in another post a good link by JohnWill http://www.ralphb.net/IPSubnet/ it looks very good, but still I don't know what 255 determines.
The idea I get, hopefully this makes sense is that 255.255.255.0 because of the 0 I can have upto 254 clients on that one netmask.

Sorry for my stupidity/n00bishness but I would just like to understand
 

A:Understanding Subnetting

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RELEVANCY SCORE 42.4

I have a class project coming and we had to partner up, my partner was in charge up the subnetting. I don't have much knowledge of it. He finished it and gave it to me to look over.

And from what little I know, it looks wrong. Really wrong. I know there is a way to do classless subnetting, but I don't think thats what he is doing here. If some one could glance over it and give me some feedback that would be great.

Oh, the project was to subnet a 3 story building.
-----------

172.16.0/16 IP Address

(usable ip addresses)

Basement:
Warehouse - 172.16.0.1-30 : 30 addresses
Wan link floor 1 - 172.16.0.33-34 : 2 addresses

8 IP addresses unallocated.

One /30 block of 2
One /29 block of 6

Floor 1:
Sales - 172.16.0.49-62 : 14 addresses
Sales office - 172.16.0.65-49 : 14 addresses
Wan link floor 2 - 172.16.0.97-98 : 2 addresses

Floor 2:
telemarketers - 172.16.0.113-126 : 14 addresses
Managers - 172.16.0.129-142 : 14 addresses
HR - 172.16.0.144-158 : 14 addresses
Marketing - 172.16.0.161-174 : 14 addresses
Accounting - 172.16.0.177-190 : 14 addresses
Training - 172.16.0.193-206 : 14 addresses
Administrative - 172.16.0.193-198 : 6 addresses
Security office - 172.16.0.201-206 : 6 addresses

172.16.0.209 & up unallocated

One /28 (or smaller)
One /27 block available, 44 IP addresses max left on this floor
68 addresses unused.
 

A:Subnetting problems

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RELEVANCY SCORE 42.4

IP Address -1 : 10.22.21.210, 255.255.255.0 IP Address -2 : 10.22.2.25, 255.255.255.0 are these in the same subnet or different subnets?
 

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RELEVANCY SCORE 42.4

Can anyone suggest the Best Way to learn and then perform Sub netting and Super netting?
I would be very grateful for any advice that you might wish to supply.
Bats
 

A:Subnetting and Supernetting

http://www.learntosubnet.com/
 

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RELEVANCY SCORE 42.4

I am a Computer Networking student and cannot seem to wrap my head around this subnetting and supernetting. Any one know of a good video on YouTube or even a good link to break it down for me? Thanks.
 

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RELEVANCY SCORE 42

Hi all ,

By starting with a given IP address and prefix (subnet mask ) 172.16.0.0 255.255.252.0 assigned by the net administrator ,you can begin creating your network documentation

This is calculating and assigning address without VLSM .

He needs 4 subnetworks with 481,69,23,2 hosts so 9 host bits at a minimum to cover the subnet with 481 hosts and therefore you run out of addressing as you will only end up with 2 subnetworks each with 510 as calculated as follows .

The way I would interpret this is as follows :
172.16.0.0/22 gives 2 subnets 172.16.0.0 /23 and 172.16.2.0/23

172.16.0.0 /22
11111111.11111111.1111110.00000000
the first 22 bits Network section
the 23rd bit the bit borrowed for subnetting the subnet
the last 9 bits host bits which gives 2^9 –2 hosts
ie 510 hosts per each of two subnets

Therefore , 172.16.0.0/22 gives the following 2 subnets

Subnet 0 172.16.0.0/23
Subnet 1 172.16.2.0/23

You are borrowing 1 bit from the host bits as opposed to 7 bits which the following book interpretation does .
The Book interprets it as follows

In the book he starts with 172.16.0.0 /23

255.255.254.0

11111111.11111111.11111110.00000000
the first 16 bits are the Network section
the next 7 bits are the bits borrowed for subnetting ie 2^7 subnets =128 subnets
The last 9 bits are host bits which gives 2^9 –2 hosts ie 510 hosts per each of 128 subnets
172.16.0.0/22
gives
subnet 0 172.16.0.0/23
subnet 1 172.16.2.0/23
subnet 2 172.16.4.0/23
.... Read more

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RELEVANCY SCORE 42

hey.
the problem is that when i configure ADSL modem/router on ip address 192.168.1.248
and subnetmask 255.255.255.248 then it allow ip address range from 192.168.1.249 to
192.168.1.254 which is understandable, but varios other ip address like this 192.168.1. 239 &192.168.1.140 etc are also acceptable but computer not access web services
 

A:issue related to subnetting

Why are you screwing around with the subnet for the router? Most SOHO routers are designed to function with a standard class-C subnet. I suspect the router is ignoring the subnet, but the Windows system at the other end is getting confused.

What do you hope to accomplish here?
 

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RELEVANCY SCORE 42

I need some guidance on subnetting a wireless network.

Currently, we have a T1, wired network using DHCP. We want to keep the wired network wired. We would like to add a wireless access point for our in-store customers to use. We want to keep the wireless users from being able to browse our internal network. I am thinking of subnetting....

The firewall we now have (a SOHO 6) has a builtin DHCP that we use. If I get a wireless AP, how do I keep the DHCP numbers from conflicting with one another? I mean, both the AP and the FW will have to have the same external IP, DNS, etc., so won't they conflict somehow?

Grasshopper needs the master(s) help
 

A:Subnetting a wireless network

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RELEVANCY SCORE 42

I have a W2K server and a workstation that I play around with. The server has two NIC's in it, one for an internet connection and the other for the lan connection. The external connection works fine, picking up an address from my ISP's DHCP server. I'm having troubles configuring the internal TCP/IP settings for the internal NIC. Here's what I have:

The IP is set to 192.168.0.1. When I do this the subnet mask defaults to 255.255.255.0. I've set the default gateway to match the IP address. Reasoning for doing this: I don't have a router (the PC's are cabled directly together) so I figured the gateway for the workstation would be the ip address of the server.

When setup this way the external connection no longer functions. I have to disable the internal connection in order to use the internet on the server.

When the internal connection is enabled, the workstation picks up a DHCP address (192.168.0.2), subnet's to 255.255.255.0, and picks up the default gateway of 192.168.0.1. At this point the two computers can communicate, but I have no internet connection. I've tried to change the subnet mask on the server but the workstation still defaults to a subnet of 255.255.255.0.

Further info: I am not running DNS on this server. I've set the internal connection to use the DNS of my external connection. Not sure if that's right.
Aside: I did have this working but I tried to install ISA server and things got messed up. I uninsta... Read more

A:Very confused re IP addressing, subnetting, etc

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RELEVANCY SCORE 42

How do I do the Subnetting in Very Easier Manner FORMULA Plssssssssssssssssssss.
Thanks & Regards
 

A:Method of Calculating Subnetting

http://www.ralphb.net/IPSubnet/
 

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RELEVANCY SCORE 42

Hey there, im currently studying for MCSE, and im just making sure that i've understood the below article correctly:

"If a TCP/IP host with the address 172.20.16.200 sends a packet to the address 172.21.17.201, the host first performs a bitwise AND operation beteween the local address and the locally configured subnet mask. Because ANDing 172.20.16.200 and 255.255.0.0 is 172.20.00. The host then performs a bitwise AND operation between destination address and the same subnet mask which results in binary equivilant of 172.21.0.0. TCP/IP compares the values and if they're the same, it concludes the destination is on local subnet. If the two values differ, the host determines that the destination is remote"

In this case, the destination address is a remote one correct? Because it is a class B address and class B addresses first 2 octects are network ID and not hosts.

If the destination was 172.20.18.200 on a class B address, then the destination would be local correct? Thanks very much in advance!

Steve
 

A:Quick subnetting question

Bump!
 

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RELEVANCY SCORE 41.6

Hey guys, yes this is my first post and I am going to ask for some help. But, I'm not going to lie, this stuff really does interest me. I'm taking a class that has to deal with windows server 2008 and we are working with IP addresses right now, and to me is quite fun, so I'm not "just" looking for the answer and leaving the site.

Anyway my teacher gave us IP addresses and told us to find the network ID and the Host ID. Like here is an example of the one of the questions on the paper and the answers I got. The /8, /16, /24 make sense to me. I do that all day long.

192.168.0.4/24
Net ID: 192.168.0.0
Host: 4

Now, my question is, if you change the /24 to a /25, what happens? I looked it up and I saw the subnet mask is 255.255.255.128, but I'm having a little trouble trying to get a network ID and a Host ID out of it. I know there are tutorials out there like the http://www.learntosubnet.com, which I will look at later as I don't have much time right now. But I was hoping to get some help and for someone to put it in laymons terms.

192.168.128.5 / 25
Network ID:
Host ID:

any and all help is appreciated =)
 

A:Solved: Question on beginner subnetting

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RELEVANCY SCORE 41.6

**** Nevermind ***
I figured it out.
I am trying to figure some subnetting problems out.

I have a Class A IP of 10.0.0.0 and have a mask of 255.255.128.0. Mathematically I am using 9 bit from the hosts which says 2^9 = 512 subnets. I am having a hard time figuring out how to get 512 subnets. I can see having 2 subnets 10.0.0.1 - 10.0.127.254 and 10.0.128.1 - 10.0.255.254.

Can someone explain how I am able to get 512 subnets and maybe show me the first 3 subnet IP ranges.

Any help is greatly appreciated.
 

A:Solved: Subnetting problem/confusion

You can mark your own threads solved using the thread tools at the top of the page in the upper right corner.©
 

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RELEVANCY SCORE 41.6

I've read through most all of the post in this part of the forum. It's been a big help in what direction I need to go in.

I have two Windows 2003 Servers one has two users in our CPA firm and the other is a Windows 2003 server which is used as a programming development server. We need to make both of these networks completely separate from one another and only share the internet connection.

We have two routers one is a both are linksys one is wireless. I need a straight forward approach to this task. The less complicated the better. We also use VOIP telephone systems and my boss also wants to purchase a netgear 24 port gigabit switch.

Thanks in advance...
 

A:Straight forward approch to subnetting...

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RELEVANCY SCORE 41.2

Ok so, first of all I hate subnetting. Secondly, please find the attached picture. Now, the configuration error in this diagram is 'the subnet mask is improperly connecteed for the network'.
Click to expand...

Please someone put me wrong, but so far I think this network will still operate, It just wont make use of having 2 different subnetworks. With the mask of /27, all client computers fall into one IP range, which is 192.168.2.160 - 192.168.2.191. The answer also states that a subnet mask of /28 should be used. If /28 is used, then Client A & B will be in their own IP range, and clients C & D will fall into their own IP range aswell.

As it stands, without rectifying the mask this network should still operate correct?

Thanks in advance guys!
 

A:Subnetting diagram - find the configuration error!

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RELEVANCY SCORE 41.2

Here is a link you don't want to miss for streaming online tutorials regarding the basics and some advanced information about TCPIP and Subnetting. Check out Learn TCPIP and Subnetting

Hope this helps those wanting to learn a little more than just the very basics of networking.
 

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RELEVANCY SCORE 41.2

Hi everyone,
Is subnetting only be able to configure via router and not individual computer?
Is any ISP router support subnetting, where can I find it for the router configuration?

Regard.

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RELEVANCY SCORE 38.8

well the assignment is to develop an abstract type for handling characters. Only handling 26 capital letters. I have this need help with CharSet.cc

//CharSet.h

class CharSet
{
private:
bool Contents [26];

public:
CharSet(); //constructor initializes set to be empty

void Add(char Value); //add character to set corresponding bool set to
true
void Remove(char Value); //Removes char corresponding set to true

void Union(CharSet ASet); //Union the set passed a parameter into set

void Intersect(CharSet ASet); //Intersects set passed a parameter
contains results of intersection
bool Member(char Value) const;
}//end class CharSet

Also have testSet.h which is my test

#include "Charset.h"
#include <iostream>
using namespace std;
void printSet(CharSet ASet)
{
for (char c = 'A' ; c <= 'Z' ; c++)
{
if (ASet.Member (c))
{
cout << c;
}; //end if
}; //end for
cout << endl;
}; //end printSet
int main()
{
CharSet Set1;
CharSet Set2;
CharSet Set3;

Set1.Add('A');
Set1.Add('B');
Set1.Add('C');
Set2.Add('B');
Set2.Add('C');
Set2.Add('D');
Set3.Add('A');
Set3.Add('B');
Set3.Add('C');

Set1.Intersect(Set2);
Set3.Union(Set2);
Set2.Remove('C');
cout << "Expect BC" << endl;
printSet(Set1);
cout << "Expect ABCD" << endl;
printSet(Set3);
cout << "Expect BD" << endl;
printSet(Set2);... Read more

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RELEVANCY SCORE 38.8

Hi guys! I am trying to find out how to assign hot keys to a specific action. Currently, I am having to copy and paste the BB code for font and color to every post I make on forums. [color=red][font=arial]this is what I type[/color][/font]

I would like to assign one of my hot keys to copy and paste this code so I don't have to do it manually every time. Anyone know how to do this? thanks in advance!
 

A:Hot key assignment

You can use the buttons that are along the top in the editing mode to make those codes automatically. Or you can use something like the free version of PhraseExpress to type any phrases you like with key combos.
 

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RELEVANCY SCORE 38.8

I am currently studying C# and received a practice assignment for this:

Write a program for a teacher.The program should have an array that can hold the
test scores for 30 students.The program can randomly assign grades from 1 to 100 .
Determine the average score for the class.

This is what I came up with:

using System;
class Aprog{
public static void Main(){
int[] grade= new int[31];
int ctr;
System.Random rnd=new System.Random();
for(ctr=0;ctr<31;ctr++){
grade[ctr]=rnd.Next(0,101);
Console.WriteLine("Student{0}, Grade:{1}",ctr,grade[ctr]);
if(grade[ctr]>0 && grade[ctr]<50){
Console.WriteLine("F");
}
else if(grade[ctr]>50 && grade[ctr]<60){
Console.WriteLine("D");
}
else if(grade[ctr]>60 && grade[ctr]<70){
Console.WriteLine("C");
}
else if(grade[ctr]>70 && grade[ctr]<80){
Console.WriteLine("B");
}
else{
Console.WriteLine("A");
}
}
}
}

It works but some how it does not feel right or kind off sloppy. Does anyone know of a better way to create this application?
 

A:C# Assignment

Hi gfxrelay,

Never refrain from using methods to make the coding more readable :

Code:
[SIZE=2]using System;
class Aprog{
public static void Main(){
int[] grade= new int[31];
int ctr;
System.Random rnd=new System.Random();
for(ctr=0;ctr<31;ctr++){
grade[ctr]=rnd.Next(0,101);
Console.WriteLine("Student{0}, Grade:{1}",ctr,grade[ctr]);
Console.WriteLine(getLevel(grade[ctr]));
}
}

private static string getLevel(int grade) {
if (grade >= 80) return "A";
if (grade >= 70) return "B";
if (grade >= 60) return "C";
if (grade >= 50) return "D";
return "F";
}
}[/SIZE]

 

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RELEVANCY SCORE 38.8

Anybody have any suggestions on where to start? thanks

You are part of a software development team. I am your project leader. Our assignment is to develop a virtual calculator for the University. We have decided to develop the calculator using C++. I have given you the task to develop another math library called (arrays.h). In this library you are to develop the following functions:

add, subtract, multiply
These functions will take an array of numbers, the array size and two integer numbers as their parameters. The two integer numbers represent locations in the array. It will add, substract, or multiply the numbers at the two specified locations in the array return the result.
It should be able to handle arrays that are doubles, ints, and longs.
Return values should be of the same type as the array.
divide
This functions will take an array of numbers, the array size and two integer numbers as its parameters. The two integer numbers represent locations in the array. It will divide the first number located at the position designated by the first integer by the second number located at the position designated by the second integer parameter. It will return the result.
It should be able to handle arrays that are doubles, ints, and longs.
If the value of the second number is zero, this function will display an error message to the screen and return -999 .
Return values should be of the same type as the array.
negate
This function will take an array as its first para... Read more

A:next assignment :-)

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