Missing Add DHCP Reservations Option

I have an older Airport Extreme Base Station (flying saucer variety...version 5.7...purchased approx. 2005(?) 802.11b/g). I am using an iMac with AirPort Utility 5.5.3. I am attempting to set up my AEBS to allow Remote Management from my MacBook Pro from outside my Airport network.
My understanding is that I need to be able to add DHCP Reservations in AirPort Utility to begin to make the proper connections.
When I visit the Internet/DHCP tab in AirPort Utlity I am shown:
DHCP Beginning Address (10.0...)
DHCP Ending Address (10.0.1...)
DHCP Lease (4) (Hours)
DHCP Message: (-blank-)
LDAP Server: (-blank-)
That's it. I'm not presented any list of DHCP Reservations, nor the "+" button to allow me to add a new Reservation. Aren't I supposed to be able to add Reservations on this view?
Is, perhaps, my AE Base Station too old to allow adding Reservations? Or, could some other setting be wrong preventing this option?
My Internet Connection/Connection Sharing is set to "Share a public IP address".
Any direction or links to other discussions on this topic are most appreciated. Thank you.

It's been too long ago for me to remember what the Flying Saucer settings had....
Here is a screen shot of Airport Utility 5.6 which is for Lion and it shows the DHCP reservations.
Airport Utility 5.5.3 should have the same as 5.6 has only been out for a couple of weeks...

Similar Messages

DHCP , add to reservation from address leases items should be in a better way

After you right click the item from address leases and click " add to reservation" , this item will be add to reservation list.
But I think a designated IP should be able to key in before you save in reservation list .

Not sure what you mean. If you right-click on Reservations, there is an option to add an address. You can key in a designated IP address directly.
. : | : . : | : . tim

WRT610N DHCP Reservation Client Table empty, please help!

Even though there are about 15 devices connected to the router right now there is literally nothing showing up in the DHCP Reservation list, and when I add something manually it will not come up either. I have tried reinstalling the firmware and even setting the options to default. Has anyone had this problem before? I have checked the forms and saw nothing on this subject.
This has been an issue since I bought the device, however the DHCP list did show up a couple of times when reinstalling the firmware but would go away after ~20 minutes of ussage. Any help would be greatly appreciated!
Message Edited by chrizburnz on 10-06-2009 03:53 PM

Surprise surprise. After being explict with Tech Support, having them repeatedly confirm that someone will be calling me today, I got nothing. There was not a peep whatsoever from them. I guess I kind of suspected that since they had done all that they could think of to resolve the problem yesterday. I'm just another disgruntled customer to them.
Hence, I took matters into my own hands to get my DHCP Reservation list back and to prevent it from disappearing in the future. I also took some very good advise from chrizburnz. The steps provided below are exhaustive and probably 50% unnecessary. The problem is knowing which steps are crucial and which are redundant and/or needless. I wasn't going to waste any more time trying to figure this out. I spent hours with Tech Support (3 different techies altogether) and they couldn't get my list back, even after reinstalling the firmware. I don't plan to be updating this list a lot anyway.
To get your DHCP Reservation list back and keep it from disappearing in the future, do the following...
Power down all LAN and wireless devices that connect or want to connect to your router with the exception of a single wired computer.
Save your current router configuration. There is a Backup Configurations button on the Administration tab.
Hit and hold the reset button on the back of your router for 30 seconds as previously advised.
After releasing the button, pull the power cable out of the router and wait another 30 seconds or so.
Plug the power cable back in and wait for your router to boot.
Load the original CD that came with the router and redo the Setup procedure.
Once the router pulls down an IP address from your modem, you can then start to configure your DHCP Reservations list from scratch.
Click DHCP Reservation off of the Setup --> Basic Setup tab.
Starting with the PC already connected, enter in your current PC information using the Manual method. Don't use the Add Clients button. (The MAC address should be appearing in the list above this button. You can just cut/paste it in.)
For the name, do not use special characters, spaces, or numbers. Just use upper/lower case letters and keep the name short.
Click Save Settings. Click Continue. Click the Close button at the bottom of the window.
Click Backup Configurations on the Administration tab. (You can always restore if your list vanishes on you. You don't want to have to start over from scratch the next time. You can just do the restore.)
Power up the next device. They appear to pop up immediately in the clients table. At this point, the DHCP Client table should be functioning as expected/advertised.
Repeat steps 9 through 14 until all your devices are full reserved.
Again, this is the exhaustive procedure. I can't say which steps are crucial. Just add one entry at a time, short names, letters only, and save the configuration each time you successfully add an entry. (Never "x" out the DHCP Reservation window. Use the Close button.)
If anyone finds out the real deal here, can you please post it. Or, better yet, Cisco can fix their firmware bug in the next release.

DHCP reservation & DNS for content filtering

Hi All,
I am working around with server 2008 for quite a while and facing a problem as below,
1.DHCP reservation error
Server Ip:192.168.0.254 (configured as DNS server for local use only with AD & DHCP)
DHCP scope: 192.168.0.100 to 192.168.0.200 excluded 192.168.0.100 to 192.168.0.110
earlier the same scope was 192.168.0.10 to 192.168.0.100. I was facing a error when I make a IP reservation against a MAC number error was " The unique identifier may not be correct do you want to use the identifier anyway" when I click yes "DHCP
server received a message from a client that is not valid" and by this error I am not able to make any reservations now against MAC numbers.
The same error was also on the earlier scope and that's why changed to a new scope but did not work. Any solutions will me much appreciated
2.DNS fine tuning.
I have an open DNS account on which my WAN IP number is configured to do a content filtering. I have two LAN ports with the below IP number
Local : 192.168.0.254 ( configured with no gateway and DNS as loopback (127.0.0.1)
ISP: 192.168.0.253 (with ISP gateway and DNS as loop back adapter & open DNS)
I have did a content filtering and things are working fine. But I got to open up some machines out of this content filtering and when I try to give the IP number in this below fashion.
192.168.0.115
255.255.255.0
192.168.0.1
DNS
192.168.0.254
ISP DNS to avoid filtering
I find that 192.168.0.254 does the resolving and things are still filtered as per the schedule. Is there a way where we can configure 192.168.0.254 (Local DNS server) to stop resolving web requests and only cater to resolving local names for connectivity.
I do know its too long but solutions for the same will be help me out to solve it. Thanks in advance.
Regards,
Vaschell

Hello,
I have found something strange on the DHCP reservation. When I try to add a MAC number out of the network its able to make out a reservation.
Is there any way to clear the MAC number cache or something else which I can try.
A copy of the ipconfig /all for the server is below,
C:\Users\Administrator>ipconfig /all
Windows IP Configuration
   Host Name . . . . . . . . . . . . : server
   Primary Dns Suffix . . . . . . . : xyzabc.com
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : Yes
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : xyzabc.com
Ethernet adapter LOCAL:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Intel(R) I210 Gigabit Network Connectio
#2
   Physical Address. . . . . . . . . : 00-1E-67-A4-F4-DC
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.0.254(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . :
   DNS Servers . . . . . . . . . . . : 127.0.0.1
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter ISP:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Intel(R) I210 Gigabit Network Connectio
   Physical Address. . . . . . . . . : 00-1E-67-A4-F4-DB
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.0.253(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.1
   DNS Servers . . . . . . . . . . . : 127.0.0.1
                                       208.67.222.222
                                       208.67.220.220
   NetBIOS over Tcpip. . . . . . . . : Enabled
PPP adapter RAS (Dial In) Interface:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : RAS (Dial In) Interface
   Physical Address. . . . . . . . . :
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.0.205(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.255
   Default Gateway . . . . . . . . . :
   NetBIOS over Tcpip. . . . . . . . : Disabled
Tunnel adapter Local Area Connection* 8:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : isatap.{0602F6CF-4B32-491F-994A-3C0952D
B54}
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 9:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : isatap.{6A14710B-A078-4AF9-BD7A-989767F
377}
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 11:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 02-00-54-55-4E-01
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 12:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
C:\Users\Administrator>
Thanks,
Vaschell

DHCP Reservation Sync and DNS Host record sync etc shown in IPAM GUI

Hello all,
I am aware of the scripts in the TechNet script center to sync DHCP leases etc to IPAM, however my question is about something else -
If you highlight an IP address (IP address inventory->select an IP), You can see fields that say: "DHCP reservation sync", "DNS PTR record sync" and "DNS host record sync" as below:
I was curious as to what these are for. Is there some built-in sync functionality for these that I perhaps have not enabled? (Don't see such options any where..)
thanks,
-Ravi

Hi Ravi ,
The three columns tell us the information of the synchronization between IPAM server and DNS server (or DHCP server) .
Here is the detailed guide for using IPAM :
Using the IPAM Client Console :
https://technet.microsoft.com/en-us/library/jj878351.aspx#inventory
IPAM can sync DNS and DHCP records .
The IPAM database is separate from DHCP and DNS servers on our network ,and full synchronization of hosts and IP addresses between IPAM and managed DNS or DHCP servers does not occur automatically
unless we have configured automated tasks to perform this synchronization .
For detailed information ,see
DNS and DHCP record synchronization chapter in the following link :
Multi-server Management :
https://technet.microsoft.com/en-us/library/jj878329.aspx
Best Regards,
Leo
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

E4200 : DHCP Reservation not showing anything !?!

Hello,
When I'm in Setup -> Basic Setup -> click on DHCP Reservation, I don't see all entries I've created earlier but computers that connect still have the correct IP address on the network; I don't know if I can create additional entries if nothing appears, what should I do ?
When I go to Status -> Local Network -> DHCP Client Table the list is blank but some computers are connected to the network
I'm using firmware 1.0.01 build 10 Feb 21, 2011, language = English, Firefox 4.0.1
Rebooting the router doesn't change anything, I can't see connected LAN equipment and DHCP Reservation is empty despite the fact I've created entries.
Together with the "Access Restriction" which doesn't allow to block a computer from 10pm => 8am unless you create 2 rules + various issues with attached USB + 2.4Ghz signal that is far from optimal (never able to achieve more than 144-N-Mbps) and I ask myself if I will not contact the store where I purchased this unit and ask a refund (and buy something else from another brand...)
It's the first time I buy a Linksys equipment and very disappointed, support doesn't seem to be very serious
Thanks for any suggestion
PS: Where do I ask for a refund or something similar in Linksys site ? If nothing exists, I'll let the store where I purchased this unit now about the present post

Thanks for your answers
Today it works and I didn't reboot, restart or reset anything
I can see DHCP Reservation list + DHCP Clients Table
Same PC, same network, nothing restarted, reset, changed or added and now it works
Weird
I would not like to re-create everything in the DHCP Reservation List as I have 17 entries so far (and going to add 1 more...)
Apparently, if I can't see my list, I have to wait a few days

EA6700 Invalid IP address in DHCP reservations

Hello. First time here so bare with me. I can't believe I am actually posting this stupid thing but it must be a bug or something very wrong. As the subject says I am trying to reconfigure my network as there are too many devices too keep track/configure manually, and I can't add devices for DHCP reservation:
-manually,
-selecting from the list,
-modify any of my (few) previous entries,
when I am trying to associate IPs to MACs in Connectivity > Local Network > DHCP Server > DHCP reservations.
Every **bleep** time the little (two) fields for the IP are just starting to glow pinkish somehow and a baloon appears saying Invalid IP address. No matter what numbers I am filling in. Of course I would very much like to fill the IPs from my internal network 192.168.1.ish...
This just can't be for real. Tell me I didn't pay those money for this kind of bugs.
Don't take the name of root in vain!

PS: also after I add from the list (this one at least works) - I can't edit the entry, due to the same error, so it's useless too...
I should mention that even if 3 devices are connected wired 1GB to the router and most of them are wireless, on one port I have a SG300-28 Cisco Switch, in a separate VLAN, for easy administration of some servers/storage devices in a remote location (remote = different building ~ 50m). The switch is in layer 2 mode, no DHCP there. Worked for years. No IP conflicts.
All the machines/devices are Linux, BSD, Android. And I really need this as I have to restrict access to a FreeNAS 9.2 machine.
Don't take the name of root in vain!

Maximum number of dhcp reservations

I am using an airport extreme (3rd gen, latest firmware).
I added 26 DHCP reservations.
Now I want to add some more.
Problem is: The ´+´ button is gray, only the ´-´ button is black.
using the EDIT button changes an existing entry and overwrites it.
Is there any limitation of the number for dhcp reservations?
How can I add new one?
Thanks for your help.
Stefan

Apple Please fix this.

DHCP Reservations and ARD

I asked this question on someone elses thread. I'll ask here as well..
I have 2 computer on my Airport Extreme network I am controlling with my Macbook pro (ARD Admin)
G5 Tower - on ethernet, Macbook Air on wireless (which travels outside network sometimes)
When inside the network I can control both computers... no problem.
When outside I can control only the G5.
I have setup a DHCP Reservation for the G5 on the Airport Utility so I can access it from outside. Works great... I can add a second DHCP Reservation for the Macbook Air but the Port Mapping does not allow a second mapping to the Air.
How can I do this?
Second question - DHCP Reservation - If the Airport remaps the DHCP addresses each 24 hours, Can i use an IP over the range... say - 205? This way the target computer will always be available?

I have setup a DHCP Reservation for the G5 on the Airport Utility so I can access it from outside. Works great... I can add a second DHCP Reservation for the Macbook Air but the Port Mapping does not allow a second mapping to the Air.
As you have found out, the AirPort Utility will not allow you to map the same port to more than one device. The only way around this is to use a different port for the same function. In this case, letting ARD know to use a different port to listen on for the MacBook Air.
Second question - DHCP Reservation - If the Airport remaps the DHCP addresses each 24 hours, Can i use an IP over the range... say - 205? This way the target computer will always be available?
Yes. The purpose of using the DHCP Reservation feature is so that you can create a "permanent" IP address within the range of IP addresses in the DHCP pool. Prior to this, using an IP address just outside of the pool was a common tactic to make sure that the address used would not conflict with the DHCP server's pool.

EA6200 DNS / DHCP reservation

Hello. I recently replaced my old router with a Linksys EA6200, and I'm having a bit of trouble getting local DNS working correctly.
On my network I like to set up DHCP reservations to make it easier to find certain machines. For example, let's say I have a DHCP reservation for 192.168.1.101 for a machine called "bob". DHCP seems to assign the proper IP to the machine, so that part seems to be working fine. But the DNS server in the router does not resolve "bob". This has worked fine on every other router I've owned. Any ideas what I'm missing?
Solved!
Go to Solution.

Ok, I think I've figured out what was going on, but I'll leave this here in case someone else has the same issue. It seems that my clients were still on the dhcp lease from my old router, so they had not registered. Forcing them to renew their dhcp lease seems to correct the issue.

DHCP configuration options

Can anyone tell me how to change the DHCP configuration options - the same information found in dhclient.conf in linux/unix - under OSX? A corporate client of mine provides wireless internet at all their facilities, but no one with a Mac has ever been able to connect. The wireless connection comes up and is stable, but the Mac never receives an IP address. I am fairly certain they forward DHCP requests to a centralized server that handles multiple LAN segments. I suspect something in the format of the DHCP packet, perhaps one of the many options, is causing their router to drop the Mac's DHCP request packet. I have captured DHCP requests from OSX and Win2K using Ethereal, so I have some idea what options to try changing, but I need to know how to go about it. I've tried adding a dhclient.conf file, but OSX seems to ignore this.
Needless to say, this is not a simple question and I realize I'll be fiddling at low levels. However, I've tried everything there is to try with the control panel, command lines, etc. I generally have no problems getting WiFi to work across Mac and windoze whether at home, in hotel rooms, or at corporate locations, but this one really has me stumped. Any help is appreciated.

How are you connecting to the wireless network? Is it a closed network with security, or an open network? There are a lot of different protocols in play with a wireless connection, particularly with Cisco equipment. It's possible Macs don't support one of the protocols where Windows does. There may be extra security such as DHCP client IDs, or using DHCP reservations only. There could be MAC address security setup on the wireless APs.
I would ask one of your PC buddies help you find an unused address. Set that manually and see if everything works. If it does you know you have a DHCP problem. If it doesn't there's a problem with the wireless connection

I am missing the Preview Builds option...

My Windows 10 installations are all missing the preview builds option and the build versions are not updating. Do I have a group policy setting in the way?

That seems actually like good design from Microsoft. I don't want a non-admin user to have any way of upgrading their PC - that should be solely reserved for admins. And it's not like the option even appears for the user, so they won't know what
they're missing.
In the Modern UI, there's no way to elevate (I believe that's the word you're looking for) user's rights - you either have it or you don't. So all one can do is show what you can access, and hide the rest.

DHCP - reservation of an IP address

Is anyone able to explain, why I cannot change the IP address after I added it to reservation from Address Leases? Why I must manually add new reservation and manually copy the required MAC address? It is very annoying to do it for 100 addresses or more!

Hi,
maybe i didn't explain it clear, but IP address pool is configured correctly, and there are still enough IP addresses to be released.
I have problem - I want to fix some IP addresses of PCs in our network, but they are assigned randomly. So I wanted to use the reservation
for getting the MAC and the name of PC and change only IP address - but it is gray, ie. I cannot change IP after the reservation has been made. Why? Thats my question - why the programmers did not enable it?! Other DHCP SW (as IPFire or pfSense) does it this
way - so what is the problem? Why your surely "better" Windows Server 2008 R2 has such limitations?
L. Průša

WRT160N dhcp reservation causing lease time weirdness with WUSB300N

I just purchased these two devices and things seem to be working OK but when I try to reserve a dhcp ip for my desktop PC which is connected to the network with the WUSB300N, the lease time on that ip address goes down to 1 minute. It ends up constantly dropping and reconnecting the address. If I remove the reservation, the WUSB300n goes back to getting a normal 24 hour lease. This is not an issue with any of the other wireless devices on my network. I have a Macbook Pro, an iPhone and a PS3 all with reserved dhcp ip addresses and their lease times remain at 24 hours.
I'm assuming there must be some setting for the WUSB300n that could take care of this but I can't find it. The desktop PC is running Windows Vista 64 bit home premium. The installation of the WUSB300n didn't exactly go smoothly. Every indication during installation was that of failure to install correctly. No linksys utilities were installed and Vista reported the driver installed but the adapter wasn't working; when I rebooted the wireless usb adapter did work. Of course that's not uncommon, requiring a reboot for a driver to initialize but nothing in the installation indicated a reboot would be necessary and typically a reboot isn't necessary for USB driver installations. In addition, the driver disc that came in the box with the WUSB300n didn't work so I used the driver package available from this site.
I can live without the dhcp reservation but to best manage my home network I'd like to take advantage of this option.
Thanks

Greetings - I'm actually having the exact same problem with my WRT160N. I bought the router in December 2009 and utilized one reservation for a network printer. It worked fine, and the reserved IP address would show up in the DHCP Client List of the router configuration page with the correct lease time remaining. More recently (May 2010), I added a 2nd reservation for a network hard drive. This is when the problem began occurring, and it impacts both the network printer and network drive. The reserved IP address leases will appear in the Client List for (what appears to be) a random amount of time, then at some point changes to one minute and counts down until it expires off the list. The devices continue to work with their IP addresses after they erroneously expire off, but this inconsistent behavior suggests there may be a problem with the router's DHCP reservation functionality.
To clarify, I'm not using the WUSB300N, my problem is the one identified with the WRT160N. My reserved devices are a PC being used as a shared network drive (with an integrated Intel NIC) and an HP C6180 printer with built-in NIC.
I utilized linksys.com online technical support chat, and she had me re-flash to the latest firmware. This ultimately did not solve the problem. Any troubleshooting ideas?

WRT150N -- DHCP Reservation stopped working

I had a printer assigned to an IP address and that showed up fine under Clients Already Reserved. I wanted to add my computer so I could forward a port to it. The DHCP Reservation list was empty. (I had assigned the printer manually). I tried Manually adding Client. It showed up under the Client Already Reserved list, but then both entries disappeared and absolutely nothing seems to be working. I know the computer didn't get assigned because when I switch from wireless to wired I get assigned a different IP. How do I get this stuff working again and why have I never got a list of the clients in the DHCP Tables?
I am on a MacBook Pro running 10.4.6

That wasn't quite the issue. The problem is I can't see anything in the DHCP Reservation window. However, I think everything is properly saved even tho I can't see it.
As a test, I shut down the router and my two computers. Then I started the router and turned on the other computer. It was assigned 192.168.1.102. I turned on my computer and it was assigned 192.168.1.101. I checked the printer and it was at 192.168.1.105. I did not shut off the printer but I am hoping shutting off the router would have cleared the DHCP table. At any rate, my computer is at 101 and the printer is at 105, which is exactly what I want.
I would like to be able to have the DHCP Reservation window properly populated without having to reset the router and lose all my settings. Is there any way to do that? It is pretty clear that it has never worked exactly right, but I was able to assign one device (the printer) and may have been able to assign a second device (my computer).
BTW, my router is running hardware version 1 and firmware version 1.01.9, which is the latest.

Missing Add DHCP Reservations Option

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