Configuring DHCP Server for a network

[Islam Nadim]

Hello All,

I want to know if there are any special configuration to add a Windows DHCP Server to the network. The Windows server will be in the same subnet as the users machines, and will only server the LAN it exists in.

Best Regards,
Islam M. Nadim


Sent from Cisco Technical Support Android App

[Reza Sharifi]

Hi Islam,

There is no special config need it since the DHCP is going to be in the same subnet as the end devices.  If the DHCP was in a different subnet, then you would need to add the "ip helper address" to the router interface or the SVI of the end device subnet

HTH

[nkarthikeyan]

Hi Islam,

You do not need any special configuration, if it is one the same LAN or on to the directly connected device(If DHCP configured on Switch/Router).

If your dhcp server is located @ remote location or when it needs the routing to take place to reach DHCP server. Then yes you need the special configuration of helper-address on to the VLAN.....

Since you have the DHCP server on the same LAN.... please make use of the dhcp snooping options appropriately to secure the network from rogue DHCP server...

By

Karthik

[Sandeep Sharma · Accepted solution]

Hi Islam

There is no special configuration required to add any windows DHCP server.

And it is also not mandatory that the DHCP server should be in the same vlan where users are placed. You can place your DHCP server in any vlan just you need to enable dhcp helper-address command on all the vlans where DHCP users are placed.

Example :

Topology:

=========

{Switch }------Vlan 10 {DHCP server/IP of DHCP server is 10.1.1.230}

    |

    |

Vlan 15 {users}

Configuration on Switch:

========================

Switch(conf)# inter vlan 15

switch(conf-if)# ip helper-address 10.1.1.230

Thanks & Regards

Sandeep