DHCP Lease Reservations in Prime IP Express 8.2

How are enterprise customers keeping track of DHCP Lease Reservations in terms of a description for the device for which the reservation has been created?
In an enterprise, healthcare environment, we make reservations for say - medical vendor equipment. Like many organizations, we have long used an access database containing entries with MAC, IP, description of the device, date created, etc.
CNR customers since versions 2.0 through 6.3.3. Presently migrating to Prime IP Express 8.2. We would like to get rid of our access database/tables and rely exclusively upon features/functions in 8.2. As best I can tell, there's no facility to provide a description - in addition to MAC, IP address, lookup key - for a given reservation. Guessing it isn't in the RFCs.
Do other enterprise customers have this requirement? Thoughts on how they're handling it? Maintain separate information sources in addition to DDI system itself?

Thanks for the reply, Chris. Often, the equipment doesn't participate in our DNS. Vendor just needs an IP address. May or may not even DHCP to get it. We wish to create the reservation in DHCP, so it doesn't "get stepped on" down the road. And, we wish to document the assignment in DHCP.
Maybe the Prime IP Express team will have some ideas

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DLink DCS-950G no DHCP lease given

Hello, I just bought an Airport Extreme to replace my Linksys 54g. Anyways somehow the Airport is not giving my DLink DCS-950G ip camera any DHCP lease. I tried using wireless and wired connection. In wireless, I can see in the logs wireless clients the MAC address of the DCS-950g but I cannot see any DHCP lease.
Since it's pretty much simple in the config, I cannot figure out what's wrong.
I have a Thinkpad T60 and i get a lease on this one.
So pretty much my Airport Extreme is useless.
If I cannot find help and/or solution, I will return the unit to BestBuy and get a refund.
PS: my DLink DCS-950G is working perfectly with my Linksys Router, so I cannot believe it's a problem with this unit.
iMac G5 + Thinkpad T60 Mac OS X (10.4.9)

Thanks for the reply, Chris. Often, the equipment doesn't participate in our DNS. Vendor just needs an IP address. May or may not even DHCP to get it. We wish to create the reservation in DHCP, so it doesn't "get stepped on" down the road. And, we wish to document the assignment in DHCP.
Maybe the Prime IP Express team will have some ideas

MacBook Pro, Netcomm NB7Plus4W and Renewing DHCP Lease + Airport Express

Problem 1 - Internet Connection Problem
I am in a locatation with:
2 x Late 2011 Macbook Pros 0sX 10.7.3
1 X Mid 2010 Macbook Pro Osx 10.6.x
3 x iPhone 4 iOs5.x
1 x PC Windows XP
ADSL2 internet connection
Wireless Netcomm NB7Plus4W
The 2 x Macbook Pro's 0sX 10.7.3 have difficuly connecting to the internet after wake from sleep, restart etc. They connect to the wireless network okay however they are very slow to get online, usually about 3-5 minutes minimum. Usually what is required is openening System Prefs / Network / and renewing the DHCP lease, which reduces the Internet connection time by a couple of minutes.
Other devices connect okay.
Problem 2 - Airport Express extending wirelss network
I would like to add an airport express to the wireless network so music can be played through iTunes to a coneected sound system, however the instructions in Airport Express Help do not seem to work.
Thanks for your replies in advance
Christo

I don't think it can be a Leopard-specific issue, or even a MacBook or Airport one, 'cause I've been having the exact same problem for several weeks on my old G4 tower running 10.4.11 & connected by ethernet to a NetGear router. :\ In all user accounts it opens a few web pages then loses connection until I renew the DHCP lease - strangely, this seems to happen quicker while using Safari than Firefox, but that could be coincidental. When the G4 has lost its connection, both my 3G iPhone and my boyfriend's POS Dell laptop have no trouble connecting wirelessly.
I plan to try BDAqua's hardware test suggestion as soon as I have time to hunt for my Tiger install disks. Any other suggestions would be appreciated.

How do I revoke a DHCP lease in the 10.8.4 server app?

Hello Everyone,
I have some devices (security cameras) that have successfully requested a DHCP lease. Since then I went ahead and manually created a static reservation for them with a MAC hardware address in the DHCP. For whatever reason they are not switching over to the reserved address. The leases were originally for 1 day. It has been 5 days now. After the first day I switched my lease time to 1 hour. I have done everything short of leaving the devices off for 24 hours.
In Lion server, I could revoke the lease via the gui. No such luck now. My call to Applecare resulted in a "there is no way in 10.8.4 to do this". They said it would switch to the new reserved address after the initial lease period timed out, so I'm hoping the representative was wrong twice. They mentioned a complete lease wipe, but couldn't say if this would cause me to lose my list of reserved static addresses, which isn't an option.
It seems crazy that such a basic feature wouldn't make it into this release of the DHCP service. Any help would be greatly appreciated!

Are there any DHCP queries from the cameras? Check the DHCP server log via Console.app or Server.app (or Terminal.app) for details. (I don't know the 10.8 path to the DHCP logs offhand.)
According to a FAQ over at the Vivotek site, the following is the setup sequence for various recent cameras; the boxes start up in the "I don't have an IP address" self-allocated address block oddly enough, and apparently don't ask for a DHCP address? (You may well be aware of all of this, but this is the block that DHCP clients use when they first communicate with DHCP servers.)
If you are using our new product such as IP7138 / IP7139 / FD7131 / VS7100… etc, no matter your network environment is what, you can always find the camera by Installation Wizard II with the IP address 169.254.x.y.
And then, please double click the camera found by Installation Wizard II or directly type the IP address to your Internet Explorer URL box to access your camera (you do not need to change your PC's IP address). After access your camera, please go to "Network" page to configure proper network settings.
See if the devices are available via mDNS, as well; download the Bonjour Browser and have a look around your LAN. (If you're very lucky, the cameras might be visible and chatting on mDNS.)
Might also try resetting one of the cameras back to factory defaults, and seeing if you can get them to re-ask the DHCP server.
(I've had issues with some HP printers and DHCP clients and IP address assignment, but that's fodder for another discussion. And I also wouldn't rule out a rogue DHCP server, either. I've seen all sorts of unexpected stuff connected to networks over the years...)

EA3500 issue, possibily with DHCP lease renewal

I have a new EA3500 router that's working great for a variety of devices* except a Windows7 laptop. 24 hours after establishing a connection, the laptop loses connectivity and it's very difficult to re-establish a connection. Usually I have to reboot the router, but 24 hours later the problem returns and Windows is unable to connect.
My router settings include DHCP client lease time set to 1440 minutes (24 hours), so I thought the problem might have something to do with DHCP lease renewal. To test this theory, on Saturday night I did ipconfig/release and ipconfig/renew and established connectivity from the laptop.
Sunday morning I spoke with Linksys support and changed several settings per their recommendation:
Network mode mixed (I had it on N-only for some reason)
Assigned different SSIDs to the 2.4GHz band and 5 GHz band
2.4 GHz band channel is 20MHz only, using channel 9
5 GHz band channel is 40 MHz only, using channel 161
I also power cycled the router.
Everything worked fine until Sunday night, 24 hours after the release/renew, when I lost connectivity. I am not sure what to try next and whether the problem lies with the router or the laptop.
* other devices include Macbook, 3 iPhones, iPad, 2 Kindles, printer, DVD player

If you are only having this problem with the laptop then there is a possibility that the problem might really be with the laptop. What you can do on the router though is to add the laptop on DHCP reservation. In that way, even if the router’s DHCP Lease time will stop, the laptop will still be connected since the laptop will now have a fix ip address.

Releasing WLAN DHCP Lease

I'm using a 100Mbps Airport Extreme on my Verizon FiOS connection. I need to swap it out for another router to debug a problem. Verizon FiOS requires that the current router physically release its DHCP lease before it will hand out another one to the replacement router. Powering down and swapping the routers isn't enough.
Does anyone know how I can do a WLAN DHCP "release" on an Airport Extreme. I can't find any way to do that with the AirPort Utility.
Thanks!

I guess you haven't set any reservations on your AEBS, so you could try setting the DHCP Lease Time down to 1 minute and turn off the connected machines.

MDT 2013 - A Connection to the deployment share could not be made - DHCP Lease was not obtained

First, let me give you some context:
Framework: MDT 2013 with MS SDK 7.1
Task Sequence: Standard Client TS with sysprep and capture.
Target workstation (build workstation): VM Guest on ESX 5.5 host, 8 vCPU, 8GB RAM, LSI Logic SAS Controller, E1000 NIC, SSD DAS
Behavior: The VM loads and installs the OS fine in PE, VM boots into OS successfully and resumes the TS, after the first system reboot, the error message occurs and it reads:
A connection to the deployment share (\\*********\DeploymentShare$) could not be made. DHCP Lease was not obtained for any Networking device! Possible Cause: Check physical connection. Retry:...... Cancel:.....
While observing this error, I didn't notice the NIC hadn't completely initialized and obtained an IP yet (network adapter icon in systray), additionally hitting retry after the NIC was initialized resumed the TS.
This behavior reoccurs with several subsequent reboots until a few more applications (Citrix Receiver, VMware Tools) with services are installed which seem to then slow the system boot-up time and then allows the TS to start after the NIC has initialized.
From several posts I've read on this forum, this particular behavior was alleviated by a "wait for IP lease" mechanism built into the TS engine which was introduced in MDT 2010 SP1, I wasn't able to find any other confirmation whether
this mechanism is still in effect with MDT 2013. Another point worth mentioning from several other posts I was able to find is that this behavior appears to manifested itself on target workstations with SSDs, which would somewhat explain the faster
TS load time vs waiting for an IP lease. I've also tried to replicate this behavior in a non-SSD and low-performance VM environment and I wasn't able to replicate it.
My question: Does anyone else have experienced this behavior with MDT 2013 and if so, how did you resolve it? Or is this a bug?

I have this issue intermittently as well. For us, it coincided with the deployment of IP phones, which meant PoE switches all around. However, the problem persisted even after we turned off PoE to the ethernet ports from which we normally PXE
boot.
As this issue has been intermittent, I've backburnered it. When it does happen, I just wait for the lease to arrive then rerun the wizard.
Thanks for the feedback, that's true the TS can be resumed manually once the lease has occured but it defeats the purpose of an automated TS if I have to keep an eye on it and intervene if I need to.
The network guys here recommended putting wireshark or network monitor on it and figuring out just what the heck is going on. Basically, what Keith Garner said. They also disabled PortFast awhile back to see if that made any difference, and it did
not.

TS1388 After one or two websites the search "freezes". To rectify this I need to go into "Network" and press "Renew DHCP Lease" on my imac 10.6.8

After one or two websites the search "freezes". To rectify this I need to go into "Network" and press "Renew DHCP Lease" on my imac 10.6.8TS1317 - Mac OS X: Troubleshooting a cable modem, DSL, or LAN Internet connectionAny help?

Check your computers time and date are correct, and updating to your location via Apple's servers.
WiFi, Internet problems, possible solutions

[SOLVED] Hostname not showing in DHCP lease list

This is a brand new installation using the new systemd base.
Installed openbox as window manager and Network Manager.
What did I miss that the hostname of this computer (opus) is not showing up in the DHCP Leases list?
When I connect to the network using Network Manger(DHCP), hostname is not sent to the DHCP server (DNSmasq). It shows up as a "*":
DHCP leases
Hostname    IP-address    MAC-address    Lease expires
*    192.168.10.100    XX:XX:XX:XX:XX:XX Nov 28th, 19:34
*    192.168.10.59    XX:XX:XX:XX:XX:XX Nov 28th, 19:23
alarmpi    192.168.10.69    XX:XX:XX:XX:XX:XX Nov 28th, 16:56
RM696    192.168.10.97    XX:XX:XX:XX:XX:XX Nov 28th, 18:23
(I blanked out the MAC-addresses.)
The first entry is connecting through wireless. The second is wired.
At the command line:
hostname
opus
hostname -f
localhost.localdomain
/etc/hosts:
# /etc/hosts: static lookup table for host names
#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost opus
::1 localhost.localdomain localhost opus
# End of file
What file do I need to change and how?
Updated:
1) I created a /etc/dhclient.conf file and added:
send host-name "opus";
request subnet-mask, broadcast-address, time-offset, routers,
domain-search, domain-name, domain-name-servers, host-name;
and rebooted.
This had no effect.
2) Just for kicks, I uninstalled Network Manager and installed Wicd.
This DID send the hostname and it displayed on the DHCP Leases List. But it also had the effect of turning off the WiFi radio.
I did try to turn it back on: Went to the BIOS, made sure it was on (it was). Read some posts about power savings and what to do (tried them, didn't work).
So I uninstalled Wicd, re-installed Network Manager and I am back to where I was.
Last edited by dastagg (2012-11-29 11:15:11)

Sorry, forgot to add this:
https://bbs.archlinux.org/viewtopic.php?id=152376
Follow the instructions on the bottom.

RV180W firmware 1.0.5.4 DHCP lease problem

Yesterday I upgraded my RV180W to firmware 1.0.5.4. Today the only machine that we have with XP can't get a DHCP lease (we have some 20 machines that can that all have W7 o W8.1). Also none of the iPhones nor Androids that connect via wifi get leases either and thus have fallen back to 3G.

Hello,
First of all I want to say that I'm sorry you are experiencing an issue with the device after the firmware upgrade.
Now, we have tested this device with the new firmware on our lab and we are not experiencing the same issue, which leads me to believe this may be an issue with your particular configuration or network topology.
We would love to have the opportunity to troubleshoot this issue on the Small Business Support Center. If you are still under support with the device, give us a call and we will be happy to assist you.
If you are not able to or are out of support, then please provide as much information as possible in regards to your current configuration as well as network topology, maybe a detailed network diagram could be helpful to so that we can have a better idea of that the issue could be.
I hope this was helpful.

My internet keeps going down and when I try to renew the DHCP lease it stops working altogether

Every couple of weeks my internet would go down, I would be surfing the web and suddenly my connection would fail. I would try renewing my DHCP lease and every time I did I would get an IPv4 address of 192.168.0.100. Originally, restarting the router would fix the problem but the past couple of times they needed a technician from the provider to fix it. Even using the Ethernet cable doesn't work either.
is there a reason why this keeps happening and how do I stop it from happening again? Is there anything I can try to fix it on my end?
my computer is a five year old MacBook, running OS X 10.9.4

Having the same problem. Watched 25 minutes of a rental and it stopped with the message"unable to load video"
Using current version IPad mini.
Ios7 is HUGH PIECE OF CRAP!!!!

WLC2504 clients not receiving DHCP leases

I'm stock with a 2504 using version 7.0.220.0 that won't lease out DHCP adresses
Wifi clients are unable to get a DHCP lease from an external DHCP server.
The WLC are handling 3 WLAN, 2 using internal DHCP server, 1 (that wont work) using external DHCP. The external DHCP server, is a router/firewall (out of my reach) that suffered from a power out, a short while ago, ever since the DHCP is not working on that VLAN, if client are getting static ip adresses, everything works fine. If i'm using the same network link, and plug it into a computer, I get a DHCP address.
I've enable DHCP proxy
Debbuging DHCP, using: Debug DHCP packets enable
Gives me this:
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP received op BOOTREQUEST (1) (len 308,vlan 20, port 1, encap 0xec00)
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP option: message type = DHCP INFORM
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP option: 12 (len 1) - skipping
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP option: vendor class id = MSFT 5.0 (len 8)
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP option: 55 (len 13) - skipping
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP options end, len 72, actual 64
*DHCP Socket Task: Nov 08 14:21:11.397: c8:0a:a9:cc:6d:f6 DHCP dropping packet (no mscb) found - (giaddr 0.0.0.0, pktInfo->srcPort 68, op: 'BOOTREQUEST')
Thanks

Hi Steen,
When a client is in DHCP REQ state on the controller, the controller drops DHCP inform packets. The client will not go into a RUN state on the controller (this is required for the client to pass traffic) until it receives a DHCP discover packet from the client. DHCP inform packets are forwarded by the controller when DHCP proxy is disabled.
Please check this, if still u r facing issue then provide more info.
Can you please paste a client debug of the client having DHCP issues.
Go to cli of the wlc and run the client debug . Diconnect the client then reconnect and gather the output and post.
Regards

N82 does not correctly process DHCP leases

I have no problem attaching my new N82 to my, and friends, home wireless networks. However, it fails to connect to the Univeristy Campus network giving the error: "Web: No gateway reply!"
This is because the phone doesn't correctly process DHCP leases with the 'network of one'' (2545.255.255.255) subnet mask.
Campus network details:
HP WAP 530 enterprise access point. The DHCP server is an ISC dhcp server giving out ip address in the standard private class C address range (192.168.1.0) with a subnet mask of (255.255.255.255), and a default route of 192.168.1.1.
This works on Windows 2000/XP/Vista and MAC OSX, but many embedded devices will not add the default route as they see it as outside their subnet. Many institutions use 255.255.255.255 to mitigate inter host communication.
This means I cannot use my N82 at work and I'm not happy. Beware, don't assume you can use your Nokia device at work.

If task manager says it's still running, then obviously it hasn't completed, contrary to what you said. Maybe this .exe process isn't written correctly. For example, maybe it is dependent on the current directory it is launched from, and so double-clicking it causes it to be launched from the directory it lives in, but when run from this java app, the working directory is somewhere else.

Continually have to renew DHCP lease

Occasionally my MBP will loose wireless connection. It often happens when my phone accesses the wireless Linksys router.
Every time it happens, I open network preferences, go to Advanced and "Renew DHCP Lease" and it fixes it.
Almost looks like I could use a script or something to make it renew DHCP lease when wireless disconnects.
Any ideas?

BoyHowdyDoo wrote:
Try another router. They are cheap.
I guess they're cheap for most people who are happy overspending for Apple products.
Usually not a problem with your Mac.
None of my other non-Apple devices have any problem connecting.
I really appreciate you being one of the few trying to help. My negative comments come from my frustration at Apple.

Need to renew dhcp lease often

to use the internet (wireless network) i must renew the dhcp lease every time i click a link or open a window. ive reset internet preferences and removed filesharing software. any ideas?

I also have the same problem and it started off small and it took me much trial and error to discover that only by renewing the DHCP lease every time I wanted to open a page could I still surf the net. My internet service provider first suggested that I try rebooting everything and I did -that worked for 5 minutes...then it was back to square one...I spoke with apple they were surprised that it was happening and gave me the option of paying for an over the phone trouble shooting diagnostic explaining that it could be the network card. For some reason last night everything worked perfectly without having to renew the lease.. and then this morning I am once again having to renew with every page. I did try an IP program called IPNETMonitorX but was quickly confused/overwhelmed with tech babble...
Has anyone solved similar issues?

DHCP Lease Reservations in Prime IP Express 8.2

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