Part – 5 :PowerShell and DHCP : Getting Information on leased IP Addresses

 

 

Part – 1 : PowerShell and DHCP : Installing DHCP Server Role on Server 2012

Part – 2 :PowerShell and DHCP : DHCP Post-Install Configuration

Part – 3 :PowerShell and DHCP :  Configuring the DHCP Scope

Part – 4 :PowerShell and DHCP :   Setting DHCP server’s “Server Options”

 

 

Information and Reporting on DHCP Server.

In my previous post we had configured DHCP server’s “Server Options”.

Now our basic DHCP server is fully functional and providing the IP address to the dhcp clients.

Our next step is gathering information of the DHCP clients and the IP addresses leased by the server.

 

Check DHCP server Statistics

To get the quick statistics of the DHCP server, we can use the                                                         “Get-DhcpServerv4Statistics” cmdlet and it will show us the quick statistics of the server.  

In these statistics you can see the total number of used and free IP address available.

 

 

IP Address leases

To check the leased IP address those are given to the DHCP clients by DHCP server, we can use the “Get-DhcpServerv4Lease” cmdlet.

To use this cmdlet we have to use –ScopeID parameter. In our case ,our scope id is “192.168.1.0”

Get-DhcpServerv4Lease -ScopeId 192.168.1.0  -AllLeases

 

 

Getting list of available free IP Addresses

 

To know about next available free IP Address we can use                                                   “Get-DhcpServerv4FreeIPAddress” cmdlet.

Just run the cmdlet with –scopeID parameter and if you want to know the list 10, or 50 next of available free IP then you can use the – NumAddress parameter.

By running the below command we can see the next 10 available free IP addresses for the scope id of 192.168.1.0

Get-DhcpServerv4FreeIPAddress -ScopeId 192.168.1.0 -NumAddress 10

 

That’s all for now. See you in our next blog post.

Regards

Aman Dhally

     

Part-4 PowerShell and DHCP: Setting DHCP server’s “Server Options”

 

 

Part – 1 : PowerShell and DHCP : Installing DHCP Server Role on Server 2012

Part – 2 :PowerShell and DHCP : DHCP Post-Install Configuration

Part – 3 :PowerShell and DHCP :  Configuring the DHCP Scope

 

In my previous post on “DHCP” article series, we had configure the “DHCP Scope” for DHCP server. Now it is time to set the “Sever Options” for the DHCP server.  

We are going to set the below server options.

S.No	OptionID	Description
1	6	DNS Server
2	3	Gateway Address
3	15	DNS Suffix

 

Setting Server Options

We have to use the “Set-DhcpServerv4OptionValue” cmdlet to set server options for the DHCP Server. In this cmdlet we have to use the “OptionID” and it’s “Value” parameters mainly.

Open DHCP manager from tools and you can see that there is no “Server Options” are configured yet.

 

Run, “ipconfig /all”  on client machine and you can see, there is NO entries for, Gateway, Connection specific DNS Suffix and DNS Server ..

 

Setting DNS Server

Let’s set the DNS Server option first, the OptionID for DNS server is 6 ,  I am setting , 202.56.215.55  as a DNS Server.

Set-DhcpServerv4OptionValue -OptionId 6 -Value 202.56.215.55

 

You can also set multiple DNS server by providing multiple comma separated values.

Set-DhcpServerv4OptionValue -OptionId 6 -Value 202.56.215.55 , 202.56.215.54 , 8.8.8.8

 

Setting Gateway

The option ID for gateway is 3, I am setting the value 192.168.1.99 as a gateway address.

Set-DhcpServerv4OptionValue -OptionId 3 -Value 192.168.1.66

 

Setting DNS Suffix

The OptionID for DNS Suffix is 15

I am setting my website domain name a DNS suffix.

 

DHCP Manager

Now open DHCP server manager and click on “Server Options” and you will see all of our entries which we configured and set by PowerShell are there.

 

Testing

It’s time to test the configuration, Now, do the following on your client machine

1.       Run “Ipconfig /release”

2.       Run “Ipconfig /renew”

3.       Run “Ipconfig /all”

Here you go, you can see all of our configured setting there.

 

That’s all for now. See you in my next blog article.

 

Regards

Aman Dhally

     

Part–3 : PowerShell and DHCP : Configuring the DHCP Scope DHCP Server

 

 

Part – 1 : PowerShell and DHCP : Installing DHCP Server Role on Server 2012

Part – 2 :PowerShell and DHCP : DHCP Post-Install Configuration

 

 

In my previous post, we do the Post-Install configuration task for the DHCP Server.  Now it’s time to configure the DHCP Sever Scope. We can going to do the below configuration.

Configuration.

 

DHCP Configuration
Name	ID
IP Address Scope		192.168.1.100	192.168.1.200
DNS Server	6
Gateway	3	192.168.1.99
Domain Name	15	Amandhally.net
Subnet Mask		255.255.255.0

 

We configure our DHCP server to give us the automatic IP Address from Range 192.168.1.100 to 192.168.1.200.  Subnet mask  is “255.255.255.0” our Gateway’s IP Address is 192.168.1.99 and the IP Address of our DNS Server is “192.168.1.99”, and as a domain name for DHCP IP, I am using amandhally.net.

Scope

 

Before setting scopes, I want to bind the specific LAN card for DHCP Server ( as I have 2 LAN cards on my server), I don’t want to run DHCP server service on all of My LAN Cards,  to do that, I can use “Set-DhcpServerv4Binding” cmdlet.

You can see I have 2 Ethernet cards on my machine, and I want to run the DHCP server on the LAN card named as “for_dhcp”.  

Note: I renamed this LAN card manually, from “Local Area Network” to “for_dhcp”.

Now run the below command.

Set-DhcpServerv4Binding -InterfaceAlias "for_dhcp" -BindingState $true

 

Once it done, let cross check it by running the Get-DhcpServerv4Binding cmdlet.

 

Perfect, the Ethernet is bind.

 

Setting Scope.

 

Now, we have to set a scope for the DHCP Server, so that he can start giving us the IP addresses.

$nameScope = 'DHCP Delhi'

$startIP = '192.168.1.100'

$endIP = '192.168.1.200'

$subnetMask = '255.255.255.0'

For my ease, I set my settings is variable, so that is easy to change later on {idea for scripting } , and save them as a script file for later use.

Above, I am setting the name of the scope to “DHCP Delhi” and the DHCP server start leasing the IP Address from “192.168.1.100” to end IP address of “192.168.1.200”. and my subnet mask will be “255.255.255.0”.

We have to set all of above using the “Add-DhcpServerv4Scope” cmdlet.

Now, Once you set the variable, run the below command. By using –State parameter to True, we are making this scope active.

Add-DhcpServerv4Scope -Name $nameScope -StartRange $startIP -EndRange $endIP -SubnetMask $subnetMask -State Active

Or

Add-DhcpServerv4Scope -Name 'DHCP Delhi'-StartRange '192.168.1.100' -EndRange $'192.168.1.200' -SubnetMask '255.255.255.0'-State Active

 

Once the above command run successfully, open your DHCP Server Manager and you can see that we have a new scope and that scope it Active.

 

Even our DHCP Sever is started giving the address to other laptop on the network too.

 

And I run Ipconfig /release and then Ipconfig /renew on another laptop and he gets the IP address from our server too.

 

Now, when you open the console, you can see our DHCP Server has given 2 ips to the computers.

Great J Isnt’

 

Till, now , we are successfully able to get the IP address on client system from our DHCP Server, But we won’t able to connect to Internet or other services, until we configure the Router and DNS options in the DHCP Server,

In our next blog post we are going to do that.

See you in my next blog post.

 

 

Regards

Aman Dhally