Subnetting - How To Calculate Network Address

Jan 11, 2012

Given the IP address of and the network mask of answer the following:

What is the network address?

What is the broadcast address?

What is the valid host IP range?

What I have done so far:

Part 1 - Broadcast address - 10101100.00010000.00001010.00010110 - 11111111.11111111.11111111.11110000

Researching different ways to find the Broadcast address I took the binary IP address and replaced all numbers with 1's for the host bits identified in the subnet mask and came up with: - 10101100.00010000.00001010.00011111

Is that the correct Broadcast address?

Part 2 - Network address

I am not sure what is meant by the network address and all my research has come up with either MAC addresses (obviously wrong) or CIDR notation...How do I calculate the network address?

Part 3 - List of valid IP's

Using the same address I did the following:

28 is closest to 32 (block wise) so 32 - 28 = 4... 2 ^ 4 = 16 (block size)

IP address listing:
and so on...

The IP address in question is and falls in the - block...

Is this the correct list of valid IPs?


Subnetting A Class C Ip Address?

Dec 13, 2011

I am looking a old exercise I did last year about subnetting and I am wondering if is possible to subnet: /22

I wrote down, last year, that:

16 bit are assigned to network
6 to subnet
10 to hosts

when actually I see a class C ip address with 10 bit assigned to hosts. So, how many bit do I have for network, subnet and hosts?

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Apr 27, 2012

How can know the Broadcast address before subnetting? I know how to calculate the broadcast address , but don't understand 'Broadcast address before subnetting'?

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Jun 18, 2012

I am in the process of acquiring a static ip address from my isp time Warner. I only want to pay for a single static, but I have a number of machines I want to put on the internet, a web server and a e-mail-server. Using a cisco router, a Cisco Rv 120w. Can I assign the static ip address my isp gave me to the Rv 120w and then crate a vlan to assign addresses to various computers. Or is this something my ISP does. I get the impression from the tech guy at Time Warner that this is something they do.

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Apr 10, 2012

I wanna subnet my Network to increased performanced but im alil confused hereWhen looking at my ROUTER STATUS this is what i have.

gateway ip XX.XX.X.X
ip address

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Feb 2, 2012

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Understanding Subnetting And Classes?

Dec 8, 2012

I am currently trying to understand Subnetting via CCNA. My progress is going well,I understand the class below:

Class A 0-127 Max IP 2^24 = 16777216
Class B 128-191 Max IP 2^16 = 65536
Class C 192-223 Max IP 2^8 = 256

However I have seen an example from an ip calculator website, and noticed this :

Address: 11000000.10101000 .00000001.00000000
Netmask: = 16 11111111.11111111 .00000000.00000000
Wildcard: 00000000.00000000 .11111111.11111111
Network: 11000000.10101000 .00000000.00000000 (Class C) - I would have thought this would have been Class B?
Broadcast: 11000000.10101000 .11111111.11111111
HostMin: 11000000.10101000 .00000000.00000001
HostMax: 11000000.10101000 .11111111.11111110
Hosts/Net: 65534 (Private Internet)

Is this an invalid IP/masks as the max hosts is 65534 (which should be class B?). If so shouldnt the IP address range from 128-191- eg 172.16 (I know that CIDR is the amount of 1's. ).What calculates the class is it the netmask or the range of the first octet?

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Why isn't it possible to make following configuration:

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Jun 1, 2011

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Aug 7, 2012

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Feb 23, 2011

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Jun 5, 2011

An IP packet of size 1500 bytes passes through two network segments before it reaches its destination. The header size of this packet is 20 bytes. The maximum size of an IP packet in the first intermediate network (its MTU) is 1024 bytes, and that in the second network is 576 bytes.Explain how the IP packet described above would be fragmented into smaller parts in a router, paying particular attention to the flag bits and to the fragment offset field in the header.

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- It uses the identification field to ensure that fragments of different datagrams are not mixed.
- IP packet of 1500 bytes comprises 1480 bytes of data and a 20-byte header.
- In the first intermediate network, the packet size of 1024 bytes allows for 1000 bytes of data plus a 20-byte IP

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Jul 13, 2012

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I have a remote site in Dallas with a 2850 and another site as a head end in Michiagan which is a 7206 router.
What exactly can I do during non-business to test to see what the bandwidth is between the 2 locations?  Is there some type of command that I can run on the router to test this?

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Jul 16, 2011

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May 20, 2012

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Jul 5, 2011

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'An error occurred while renewing interface wireless network connection 9 : The RPC server is unavailable'

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Oct 9, 2012

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Feb 6, 2012

I have a network using static IP's on which are 1) Ricoh printer IP address on router, 2)Toshiba Laptop XP Pro 3) Desktop PC Win XP Pro, 4) HP Laptop Win 7.

With ONE exception, all devices can see each other - shared folders are visible and able to be be modified - and I can ping IP's / print to the printer. The Toshiba CANNOT see the printer, cannot ping the printer IP. It can ping the other laptop and the pc and they can see & ping the Toshiba.

I can install the printer to the Toshiba and it 'knows' the IP address to connect using a standard TCP/IP port that is installed in Printer ports. The printer installs fine and I ca nsend print jobs to the printer but they do not print. Eventually an error message comes up saying the job was not sent to the printer.

The work group is Workgroup on all 3 computers. (Cannot set a workgroup on printer).

I have done everything I can think of but I simply cannot get the Toshiba to see the IP address & port. THe subnet & gateway are the same on all devices and the IP's are all in the same 'set' (xx.y.y.12 = printer, xx.y.y.15 = Toshiba, xx.y.y.14 = Desktop, xx.y.y.9 = HP)

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Dec 13, 2011

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Mar 3, 2012

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Aug 13, 2011

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May 2, 2012

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Oct 30, 2012

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Dec 30, 2012

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May 3, 2011

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Nov 20, 2012

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Jul 16, 2011

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Oct 1, 2011

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Apr 6, 2011

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Pasted text from ipconfig/all script
Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.


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Oct 31, 2011

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Here is a rundown of a wireless networking test.

Windows IP Configuration
Host Name . . . . . . . . . . . . : Air
Primary Dns Suffix . . . . . . . :


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Jan 23, 2012

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Oct 26, 2012

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Apr 18, 2011

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Jan 19, 2011

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This is what the ipconfig says:
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(C) Copyright 1985-2001 Microsoft Corp.


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Jan 21, 2012

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