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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-868L => Topic started by: sjordi on April 18, 2014, 02:52:14 AM

Title: DHCP Reservation doesn't work
Post by: sjordi on April 18, 2014, 02:52:14 AM
Hi,
Just got my DIR-868L and tried to set it up.
I absolutely need DHCP reservation for about 20 devices, computers in the house and set them all up, they're all enabled and all have the right Mac addresses.

Problem is that each time any device, computer, laptop connects, it gets the right IP address for about 3 seconds and then switches to non-sense IPs

All of them are in the 192.168.0.50-100 range.
The router DHCP reservation range is set to serve the 50-199.
They broadcast them always or not
The DNS Relay option is on or off, no difference.

I tried with iPhones, iPads, AppleTV, Macbook Pro, Macbook Air, Samsung Galaxy, HP Laptop under Windows 7 and Windows 8.
All show the same behavior: 192.168.0.nnn for a few seconds, and then all switch to something like 192.168.192.nnn and all lose any kind of communication.
The router itself uses its default 192.168.0.1 address.

I'm a system engineer and know computing and server setup, IP configuration, etc... so the problem is not on my side. The former LinkSys router had the same IP reservations without problems.

When I renew the lease on each of those devices, they all correctly receive the IP addresses they're supposed to get but 1-2 seconds later, gone.

Sometimes, I'm lucky, I get those for an hour.


Now, when I force an IP on a machine, the one it's supposed to get, I can barely connect to the Internet, but then performances are awful. I mean opening a page takes about 3-4 minutes! Either by Wifi or Ethernet.
And I do have a 250Mbit/s cable internet connection at home that is not at fault.
I reverted back to my LinkSys router and everything is fine and amazingly fast. The problem is the DIR-868L

How can one have the DHCP Reservation work on that router?
Is it worth any effort?
It cur rely stay in my trash bin under my desk, and I'm going to throw it away in a couple of days. But I want to make sure it's worth trashing it.
Thanks for any clarification on someone who succeeded in DHCP Reservation

Steve
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 18, 2014, 07:06:02 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)


PC Web Browser Configurations
What browser are you using?
Try Opera or FF? If IE 8, 9, 10 or 11, set compatibility mode and test again.
Disable any security browser Add-ons like No Script and Ad-Block or configure them to allow All Pages when connected to the router.
Clear all browser caches.
Be sure to log into the Admin account on the router.
Try turning off these features in Chrome:
Top right corner, little bars for options > Settings > Settings (on left) > Show advanced settings.
Uncheck these:
Use a web service to help resolve navigation errors
Use a prediction service to help complete searches and URLs typed in the address bar
Predict network actions to improve page load performance
Enable phishing and malware protection

Router and Wired Configurations
Some things to try: - Log into the routers web page at 192.168.0.1. Use IE, Opera or FF to manage the router. Besure to log into the Admin account on the router.

Does using the default DHCP pool range of .100 thru .199 exhibit the same thing?
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 18, 2014, 12:20:53 PM
Hi,
I have firmware version 1.07
In Switzerland.
I'm using FireFox or Safari on my Mac, but the configuration has nothing to do with the browser itself. How would that be?
And yes, I did refresh everything. I automatically erase the cache each time I quit my browsers.

All the options you mention are as you say:
- No QOS (actually out of the box)
- I don't have advanced DHCP or Parental controls
- Unicasting was OFF; I turned it ON
- All Mac addresses have a unique TCP/IP address
- Each device has DHCP on, not static IP
...


Nothing different. I get absurd IP addresses I never mentioned anywhere and which are not in any kind of defined ranges.
192.168."192".nnn doesn't make any sense.

I don't know whether setting the range from 100 to 199 would ale any differences. I need them to be between 50 and 89...

Steve
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 18, 2014, 12:39:41 PM
FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

Did you load v1.07 from this site? http://www.dlink.com/de/de/support/product/dir-868l-wireless-ac1750-dual-band-gigabit-router (http://www.dlink.com/de/de/support/product/dir-868l-wireless-ac1750-dual-band-gigabit-router)

What OSX version is on the Mac? Im currently using 10.9.2 and 10.7.5 and haven't seen this issue yet, however I mainly use .100-.199 default DHCP pool.

I'd test the default DHCP pool and see if the problem still persists...

I'd turn OFF ALL devices accept for one, then begin to reserve the IP address, let the router reboot and turn on the next...keep doing this to graduate...might find where the issue comes in.
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 18, 2014, 12:52:06 PM
Hi,

It is just out of the box, brand new. Received on thursday... So no firmware upgrade.
You can see a 2.2Mb screencast I just shot from my Mac at https://dl.dropboxusercontent.com/u/11649154/dhcp.mp4
It's in real time.
And it even was worse: sometimes I got addresses like 132.244.117.9 and no Router address.

I'm using Maverick 10.9.2 just like you.
I can't use any kind of range in the 100-199 since some of my software and devices require fix local IP
But I can try to assign a 110 to my iPhone and see what's going on.

I already did turn everything off. Same behavior when I have only my Mac or only my iPad. Even only the HP laptop, which never gets the right IP.

Really too bad.
And as said, if I force a manual IP address on one of the devices, then it takes forever, if ever, to actually reach the Internet.
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 18, 2014, 12:55:30 PM
I would do a reload of the FW found at the link I provided and follow the FW Update Process linked as well and see if a reload of code will help resolve this...Seems that this maybe a FW or router issue.

If the FW load doesn't resolve this, I recommend that you phone contact your regional D-Link support office and ask for help and information regarding this. We find that phone contact has better immediate results over using email. You may have a bad unit.
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 18, 2014, 01:05:10 PM
Ok I will try this tomorrow (already late here in Switzerland).
If it doesn't work, then I'll call.
Thanks
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 18, 2014, 01:08:46 PM
Let us know how it goes.  ;)
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 28, 2014, 04:43:56 AM
Ok,
I'm back from my trip and tried everything again, lost my entire morning.
- Reset to factory settings
- Reflash of the latest 1.07 firmware just downloaded from D-Link
- Everything is fine as long as I don't reserve DHCP addresses.
- Enable DHCP and leave 100-199 as the default range
- Add 1 fixed IP address for my Mac, 192.168.1.101
- Add 1 fixed IP address for my HP Latop,  192.168.1.102
- Add 1 fixed IP address for my iPad,  192.168.1.103
- Save the settings

Then I renew the lease/reboot all of my items. They all get the right IP addresses for 1-2 seconds then get random address, out of range, and of course are cut from the Internet.

This is crazy.
Steve
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 28, 2014, 08:00:12 AM
Are you adding these "fixed" addresses to the router or on the device?

Care to have someone review your router settings with you sir?  ???
Maybe someone can review your router settings with you using Link> teamviewer (http://www.teamviewer.com) if your interested. Its safe and secure.
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 28, 2014, 08:54:36 AM
I opened a ticket with D-Link
Problem with TeamViewer, which I have and use, is that I can't connect to the internet while using the DIR-868L...
Unless I connect another way and we access it indirectly but then how can I test the IP attributions?
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 28, 2014, 08:56:29 AM
We could try factory reset on the and TV from there maybe...Does any devices hold an IP address after the factory reset?

Internet Service Provider and Modem Configurations
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 28, 2014, 10:43:42 AM
Hi yeah I thought about that.
TeamView and have only 1 reserved IP for, say, my iPhone. Then I have a utility to mirror it to the Mac screen so it could also be seen from the partner on TV...

- My ISP is Cablecom, in Switzerland.
- The Modem is a "Ubee" (https://support-en.upc-cablecom.ch/app/answers/detail/a_id/66/kw/ubee, at the bottom). I do have a Horizon which is a Samsung SMT-G7400 but I'm not using it as my modem, it's linked in the home movie theater room for that purpose only. I disconnected it to make sure it was not conflicting with the Ubee. The current LinkSys modem works perfectly with DHCP reservation.
- The ISP provides Dynamic IP to the modem itself, if I'm correct it's changing every week.

My wife is currently in the middle of college exams and needs Internet access, and I have a time difference (GMT+1) so TVing would be difficult. I need to do this when she's away  :D
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 28, 2014, 10:57:46 AM
Understand...
Is there a model # for the Ubee modem?

Is this modem carrying the NAT or have a built in router by chance?
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 28, 2014, 12:20:26 PM
The Ubee is EVM3206
It's just a modem, with 1 Ethernet port and nothing else. No built-in router.
It's NATed. I need a router to use more than 1 device on it, hence the
LinkSys and/or the DIR-868L... and the fixed IP for some of them.
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on April 28, 2014, 12:39:03 PM
Ok...so I presume the Router is getting a DHCP IP address from the ISP modem on the WAN side?

I recommend doing a factory reset, Turn OFF ALL devices accept for 1 wired LAN PC. Use IE browser and ensure all broswer security add-ons are disabled for this. Set up the router using the default settings after the reset. Go in and set the IP address reservation for this 1 PC. Don't change any of the numbers just add it and give it a name so you can identify it. Add the reservation and Save Settings. Open up the PCs networking status window. You should see it's current IP address information and everything else.

Reboot the router and watch the PC networking information. It should either disappear for a short time then come back and repopulate. Verify this on the 1 PC. If the IP address comes back after the router reboots, check Internet connection to make sure you can hit a web site. If this works, turn on the next device and let it acquire an IP address. Do the same IP address reservation on the router again. Add and save settings and reboot.

Let us know how this works.
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on April 30, 2014, 04:53:47 AM
I will try this tomorrow May 1st in the morning here (Europe)
And post back.
If someone can TeamView at that time (9am-12p Europe / that's 12a-3am Pacific) I'm ready to try :-)
Title: Re: DHCP Reservation doesn't work
Post by: sjordi on May 01, 2014, 11:43:01 AM
Ok FurryNutz,

The problem has been identified and solved, thanks to you.
I definitely followed what was happening when adding devices, one by one. Everything was fine until I plug one of my "CPL" (Ethernet through the electric wired network in the house)... Then I lost all of my DNS fixed IPs. Just went nuts with that.

Then I thought about one thing, the provider gave me 2 routers. The Ubee, which is just a modem, no router, on which I connect the 868L, and a new one recently which serves as a TV Box and Voip.
Then I thought "would that stupid one also serve as a router and DHCP server, conflicting with the 868L? As soon as I disconnected it, my reserved IPs were back and fine.
So I turned that one as "client" only to get TV and connected the phone on the Ubee (which also has a phone jack) and voilą. Problem solved.

The only thing I had was my AppleTV daisy chained to the router. Then the AppleTV was not connected to the Internet anymore but I finally switched it to WiFi, connected to the 802.11n/802.11ac 5GHZ hotspot and it works like a charm, even in FullHD 1080. I'm in the house basement but still, no hiccups.

Was just wondering whether it was possible to tell the 868L to ignore the other router? Any idea? But it's NOT important, everything works fine now and on my MacbookPro, I'm now surfing at 230Mbs... Wow!

Again, 1000x thanks for your patience and help. You really did lead me to the methodological investigation  :-\
Title: Re: DHCP Reservation doesn't work (RESOLVED)
Post by: FurryNutz on May 01, 2014, 11:55:39 AM
Awesome, glad you found the problem and fixed it.

Ya, it's kind of complex to have multiple routers on line at the same time if multiple DHCP servers are enabled. For home users, it only recommended to have just 1 DHCP server handing out IPs. Having more than just the one will run into issues like you saw and configuring multiples is complex and not recommended for home users. K.I.S.S. mean anything to you? Hehe.

Use the 868L as the main host router and DHCP server and disable all others.

Enjoy.  ;)

Title: Re: DHCP Reservation doesn't work
Post by: sjordi on May 01, 2014, 12:17:06 PM
Sure will stay as I am now!
The TV Box will remain what it is, a stupid TV box (which I never use anyway, I barely watch TV)...

:-)
Title: Re: DHCP Reservation doesn't work
Post by: FurryNutz on May 02, 2014, 08:09:09 AM
 ::)