Cisco Router DHCP Client. As you can see above the DHCP server uses the client identifier for the static binding and assigns IP address 192.168.1.100 to R1. If you don’t like these long numbers you can also configure R1 to use the MAC address as the client identifier instead. There is an option in System Preferences Network pane to use 'DHCP with manual address', wherein you enter a specific (static) IP address. But someone would have had to choose this option (accidentally or intentionally), because the default is DHCP, i.e. DHCP with dynamically assigned address. Aug 14, 2008 I have tried using the Network pane of System Preferences to set the involved ethernet port to 'configure: Using DHCP with manual address' and setting an IP address in the range of the IP addresses used by the AEBS - but I get no internet access that way; the Mac never gets the Subnet mask and router IP address fields filled in after clicking Apply. To configure manual bindings, you must enter the client-identifier DHCP pool configuration command with the appropriate hexadecimal values identifying the DHCP client. To configure a manual binding, first create a host pool, then specify the IP address of the client and client identifier or hardware address. Video is going to show you that how can bind ip and mac address in dhcp router configuration, when you changed your network to somewhere else and switch back to your this one, then sometimes.
Active2 years ago
So after browsing some websites, some people are telling me that static IP address is the best. But others say the DHCP Reservation is just as good if not the same.
So what is better? Or are they pretty much the same?
Well to help clarify some more. I reserved my PS3 and Wii U IP address in my router. Is that all right?
Ron Crafton
Ron CraftonRon Crafton
5 Answers
Using DHCP reservations offers you a sort of poor-man's IP address management solution. You can see and change IP addresses from a single console and makes it so you can see what addresses are available without having to resort to an Excel spreadsheet (or worse, a ping and pray system).
That being said, many applications require a static IP. If the server is configured to use DHCP, the application has no way of knowing that a reservation exists and may refuse to install. Also some applications tie their license to an IP address and therefore must be static as well.
Personally I prefer to use reservations when I can, and statics when I have to. But when I do use a static, I make a reservation for that address anyway so that A) it can be within the scope with the rest of the servers, and B) still provides the visual accounting of the address.
NOTE: If you're referring to network devices like IP cameras and printers, reservations are definitely the way to go because you can add a comment in the reservation as to what the device is and where it's located. Depending on the device, this may be your only means of documenting that information within the system.
Wes SayeedWes Sayeed11.3k55 gold badges2828 silver badges6060 bronze badges
I have never ran into a situation that I NEEDED to use a static but was more profitable to use one such as office laser jet printers (when you do always block the ip address from DHCP).
In my opinion laptops, phones, and any 'mobile' devices should be reserved not static. It requires no set up on the device and the server will reserve that address for that device.
When it comes to printers and in certain cases workstations (if you need to know the address.. for remote desktop ect.) always go static but remember to block the address from DHCP.
Remember though if you need to re-configure your subnet mask for any reason any and all static devices must be changed. Always think about future needs.
VdubVdub
As a printer tech, DHCP reservations are preferable to static IP assignments. You can manage them centrally as well as ensure that the device always has the current DNS and other network info.
However, DHCP reservations require you to have access to the router/DHCP server, which as an outside vendor isn't always possible. If you can't do DHCP reservations, use a static IP (being sure to manually enter subnet, DNS, etc.) but try to make it outside the DHCP scope if possible.
freginoldfreginold
A manual IP allocation is always more worthy. As an administrator, it is very important to keep a track on users' activities and DHCP gives a new IP after every 8 days by default. In such cases you cannot maintain any record for your IP addresses. Also if you want to permit different internet access authority to different departments, manual IP allocation is the best and most reliable option.
Static techniques take time but its always better to go for a static IP address if you have a big network.
StephenStephen
I have several devices at home, that need fixed IP addresses and many others where I desire fixed IP addresses. Over the years I have discovered that the choice between static IP addresses or DHCP reservations depends on the nature of the application and convenience (how many and how often do you have to set them).
For devices whose configuration does not change often (NAS, desktops, VDI machines, print server, routers, switches) and where it takes little to no effort to change IP addresses, I prefer static addresses. For everything else (IP Cams, printers, thin clients, IoT devices), I use DHCP reservations. Setting a static IP on a computer is extremely easy; once set, I don't have to visit them for years. On the other hand, I may reset printers, IP cams, Raspberry Pi devices, UPS etc. several times. It is much easier to make DHCP reservations on the DHCP server for these devices, and expect to find the reset device at the same IP every time.
Regardless of how I set the IP, I always have a reservation on the DHCP server (for consistency sake) and I track them on a spreadsheet.
Prashanth RuthalaPrashanth Ruthala
Why Use Dhcp Relay
Not the answer you're looking for? Browse other questions tagged networkingipdhcpstatic-ip or ask your own question.
DHCP makes it simple to configure network access for your home network, and port forwarding makes it easy to those computers from anywhere. By configuring static DHCP on your router, you can combine the best of both worlds.
The Problem with DHCP and Port Forwarding
DHCP is great. You configure your router to automatically assign IP addresses and the computers on your network just plain work. Port forwarding is useful because you can access your router from outside of your network and be redirected to the computer you need inside of your network. The problem is that these two wonderful things rely on one premise: your internal IP addresses don’t change. If your router changes the IP that is assigned to a machine by DHCP, then you have to reconfigure Port Forwarding. Many programs try to get around this fact by offering Universal Plug and Play (UPnP) port forwarding features, but not everything does.
Newer routers often have the ability to remember which IP address was assigned to which computer, so if they disconnect and reconnect their IP doesn’t change. Often, though, a router reset will wipe this cache and start assigning IPs on a first-come, first-served basis. Tons of older routers don’t even have this ability, and immediately assign new IP addresses. With IP addresses changing, you have to reconfigure your port forwarding settings often, otherwise you may lose the ability to connect to your home computers.
You can do this on plenty of modern routers, but we’re going to use DD-WRT for this guide. We’ve touted DD-WRT’s ability many times before, and it’s not for nothing. This amazing custom router firmware has a solution to this mess: static DHCP, also known as DHCP reservation. While configuring your router for DHCP, you have the ability to enter the MAC addresses of your computers’ network cards and enter which IP address to assign them. DD-WRT will automatically take care of the rest! If you have a different router, you can try following along using your router’s own admin page–the instructions should be somewhat similar.
Finding Your MAC Address
The only real work you’ll have to do is find the MAC address of each computer’s attached networking card. If you’re using wireless then you should find the MAC of your wireless card, and if you’re wired then use the Ethernet card.
Just go down to the icon in your system tray for your connection and click it. Mine is wireless.
Mcculloch mac 120 manual pdf. Right-click on your current active connection and click on Status.
Click on the “Details…” button.
Your MAC address for this device is listed as “Physical Address.”
OS X users can check under their System Settings and click on Network. If you click on the various tabs for your connection, you should find a “Physical ID,” “Ethernet ID,” or “MAC Address.” Ubuntu users can type “ifconfig” in Terminal. You’ll see various network adapters, each displaying its own hardware address. Do this for all of the computers in your network that you need port forwarding for. The others will just get their IPs assigned automatically by DHCP.
DD-WRT and Static DHCP
Now that you have a list of MAC addresses for each of your computers, open up a browser tab and head over to your router’s DD-WRT interface. Click on Setup, and under Basic Setup, make sure DHCP is turned on.
Scroll down to “Network Address Server Settings (DHCP)” and make a note of the starting IP address and the maximum number of users. The addresses you configure should fall within this range. Here, my range of IPs would be 192.168.1.100 – 192.168.1.114.
Now, click on the Services tab up top.
Under the DHCP Server section, you can see that there’s a list of “Static Leases” click on the Add button to add a new one.
Enter the MAC address of each computer, give each one a name so you know which is which, and then assign them an IP address. You won’t be able to add the same IP address to two different MAC address, so make sure each MAC has a unique IP. If your version of DD-WRT also has a space to enter the “Client Lease Time,” a safe setting would 24 hours, or 1440 minutes.
That’s it! Be sure to click on both the Save button and the Apply Settings button, and wait for the changes to take effect. The settings should automatically change when each computer’s lease expires, though you can reconnect from each computer if you want the changes to take effect immediately.
If not, you can select devices manually from the “Detected devices” box until one works.Restoring Files From Your Time Machine BackupsOnce you’re viewing the contents of your Mac-formatted Time Machine drive in HFSExplorer, you’ll see a folder named “Backups.backupdb”. This is the Time Machine backups folder.Underneath it, you’ll find a folder with the name of your Mac. However, they do offer time-limited trials that will work for a one-time restore process.Open the HFSExplorer application after installing it, click the File menu, and select “Load file system from device.” It should auto-detect the appropriate device for you.
Now, whether your computer loses its connect, the router gets power cycled, or the DHCP lease expires, each computer you entered into the list will stick to its assigned IP. Furthermore, you won’t have to manually configure static IPs on each machine! Port forwarding won’t have to be a pain ever again.
Does your router support DHCP reservations? Do you have a more clever use for this system? Share your thoughts in the comments!
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