- How Do You Track IP Addresses?
- Keeping Track of IP Addresses
- networking - How do you keep track of which IP addresses are used on your network? - Server Fault
- Your Answer
Otto Otto 3 3 gold badges 10 10 silver badges 10 10 bronze badges.
Zoredache Zoredache k 32 32 gold badges silver badges bronze badges. In my experience it's simpler just to give all servers statics and be done with it. Servers - static. Clients - DHCP.
How Do You Track IP Addresses?
Nice and simple. Give the servers static mappings their MAC always gets the same IP and you get the best of both worlds. And when you need to renumber you don't have to change every fscking server, you just change the DHCP server config. I third Zoredache.
Also second pjz's idea of giving servers static DHCP leases. PowerApp PowerApp 2, 1 1 gold badge 17 17 silver badges 28 28 bronze badges. The best format is whiteboard or glass wall! Adam Gibbins Adam Gibbins 6, 2 2 gold badges 24 24 silver badges 42 42 bronze badges. That is all. Matt Matt 3 3 silver badges 8 8 bronze badges.follow link
Keeping Track of IP Addresses
HannesFostie HannesFostie 12 12 silver badges 29 29 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. This scenario is now widely used by network administrators. In this scenario, each device, when connecting to the network has to contact a central server and request an address.
This server operates the DHCP system. Under DHCP no device is allocated an address permanently. The dynamic addressing method requires a lot more equipment than the static address allocation method. However, it is easier to automate than the static address method. If you have a small network, you could easily operate a static method. However, the automation that is available with the DHCP system makes it more attractive to the administrators of large networks. Networks use hostnames as well as IP addresses to identify devices.
Under the dynamic address system, the hostname stays the same, but the IP address associated with it will change frequently. Because of address changes, it is necessary to automate the mapping between the host names and IP address that are held in your networks Domain Name Server. So, dynamic addressing requires automation tools. On the other hand, having to manually assign an address for each computer, mobile device and printer connected to the network can become very time consuming for administrators of large networks.
As a small network grows, the recording of IP address allocations needs to be very strictly controlled. Any slip-ups in the listing of assigned addresses can result in networking disasters.
networking - How do you keep track of which IP addresses are used on your network? - Server Fault
So, you are going to need tools to help monitor IP address allocation even in small networks. The IP Address Manager is needed in order to check on the addresses that are currently live on the network and match the current status up to the records in the DHCP server. An IP address scanner is just going to give you more or less the same information that you got from the arp command. There are a few IP address scanner tools that can add on a little extra information and present them in a more attractive format. A good scanner tool should also allow you to save results to a file so you can compare IP address usage over time or reconcile address usage with your DNS server and DHCP server if you get to the point where these functions are managed away from the router.
Most IP address scanners just add a front end to that arp command you tried yourself. An alternative method uses a utility called Ping and runs the command repeatedly to see which addresses respond. This category of software is called a Ping sweep tool. If a tool just sweeps the network and lists current addresses, strictly speaking, that is an address scanner. If you have a small network with static IP addresses, then a list of IP addresses currently in use on the network may be all the address tracking you need.
The basic task of scanning for the addresses currently in use is a necessary network management responsibility because it enables you to check for unauthorized connections.
However, just to be sure, periodic scans of the network should be performed. If you operate a system that allows anyone to connect, such as a BYOD wifi router for the private use of employees, then it is advisable to check on the addresses of the devices connected to the network and keep a log of them. To give you an idea of the type of information you can get from an IP address scanner or a Ping sweep tool, take a look at these two tools:. The output of a scan shows the IP Address of each device on the network , together with the hostname and the contact response time.
To get a look at how a Ping sweep tool operates you could try out the SolarWinds Ping Sweep function. The tool works on Windows and it has a graphical interface. You need to enter an address range before starting the sweep. The results of a sweep show each IP address in use, the host name of that device and the response time for that node. Unfortunately, this tool is not free.
The toolset is a bit pricey, but it is packed with all of the network administration tools that you are going to need.
You can try out the package in a day free trial. Scans can be run through the graphical user interface GUI or the command line. Scans are multithreaded to ensure that IP addresses are found quickly. When running a search you can enter hostnames , IP address ranges , and port ranges to determine what information is displayed on the screen. Once you activate the scan you are then shown a list of IP addresses on the screen. GestioIP, with its quirky accented name, is an excellent solution considering it's completely free! It supports a strong range of automatic discovery and mapping all from a web-based interface, making it easy to both view and manage your IPAM needs from anywhere on your network, if not remotely.
Furthermore, GestioIP has a unique search-engine based method for network searching which gives an unusually powerful ability to perform intelligent searches. Built upon a non-BIND base means that the IPAM methodology is somewhat different from usual while still bringing in the same features and functionality of other software and hardware solutions alike.
Some options for IPAM will have a hard time making the jump from small office to big office, much less big office to a dozen datacenters, but TCPWave is more than capable of taking the leap with ease. Alcatel-Lucent covers a huge range of IPAM functionality — they offer a powerful software suite that hits all the big points of IPAM necessity while also having an appliance based solution. The ability to start small, or even somewhere in the middle, and seamlessly add appliances and software as necessary to scale steadily upwards makes their offering especially tempting for a burgeoning network.
Device42's approach steers away from general network IPAM services and more to handling large arrays of clustered machines and server racks. In particular it features automated discovery and organization of rack-based environments — this means a huge savings in regards to time for setting up proper topography.
Many IPAM solutions will discover devices but don't always lay them out and connect them just right in regards to mapping, and that's where Device42 excels. Furthermore, it has native functionality for generating QR codes to facilitate easy identification for scanning and moving hardware about quickly! This particular choice is one of the many hardware options out there — they come with a hefty price tag but for a very good reason.
The devices hook directly into your network and are interfaced with via web console and perform much the same tasks as any software or server based IPAM but do so with an even greater reliability. Hardware appliances like this free you from the constraints of client configurations and software installations — you need only drop it into your network's hardware setup and load up the interface to get your IPAM solution under way. The only real downside is that updates are sometimes a bit more cumbersome with hardware solutions, and it does introduce another hardware-level point of failure into a network setup.
This particular software is quite interesting as it began as a provider-level IPAM solution used internally by a major European service provider!