dhcp Archives – Sterling IT

After searching high and low, I thought I would share some commands that will allow you to find all active DHCP servers on your network.

There is software like FIND DHCP SERVER however there are some incompatibilities we have found on some operating systems.

Temporarily disable your production DHCP server and see if other servers respond.

You can get the IP address of the server by running ipconfig /all on a windows machine, and then you can get the MAC address by looking for that IP address using arp -a.

Running a simple COMMAND PROMPT in windows and the command line : ipconfig /all | find /i “DHCP Server”

You will be granted with the following results.

Note that you can replace DHCP SERVER with SERVER and it will display all servers on the network.

IMPORTANT NOTE: Your IP must be set by DHCP to retrieve this information otherwise it will not show up. Also this command will show even virtual NIC DHCP servers as well.

With more and more devices being introduced into networks, such as IPCams, watches, mobile devices, fingerprint readers and much more, management of this will be a nightmare, if not already. How will you manage this in a couple of years, especially with the introduction of IPv6 ?

Flexible, open and adaptive solutions to manage your complex enterprise network

Many companies are managing their IP ranges and information in spreadsheets shared across offices, states and countries. With the possibility of conflicts and mismanagement of these, there has to be an easy way… well there is!

Introducing Bluecat Networks IPAM (IP Address Management).

Sterling IT and Bluecat working together, have solutions to assist. As a central control point, IPAM provides an authoritative source for information about the network, providing valuable insight to enable informed management and security decisions for the enterprise. This strategic insight and rich integration with core network services allows you to drive more reliable service delivery, enable greater agility, improve security and lower the manual effort involved in administration. With BlueCat IPAM, you will be better equipped to take advantage of emerging technologies, driving innovation and success for your organization’s business initiatives.

Contact Sterling IT to organise a free 30 day trial of the application

Comes in a physical or virtual appliance for HyperV or VMWare

How do you manage your IP addresses over multiple sites and/or thousands of connected devices?

How to find any or all DHCP server or servers on your network without download software using command line

IPAM, DNS Sec, DHCP by Bluecat – IP Management from a central point