D-Link DIR-868L

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<Kong>
DD-WRT Guru


Joined: 15 Dec 2010
Posts: 2068
Location: Germany

PostPosted: Fri Sep 06, 2013 13:06    Post subject: Re: Dir-868L AC speeds Reply with quote
JMMazza53 wrote:
Kong wrote:
Quote:
The reason for this is, that AC operates in 5Ghz, the higher the frequency the faster it gets absorbed, that why 5ghz is bad if you have any abject between two units (e.g. client and router). Thus if you need range you will use 2.4Ghz if you need fast speed within one room you can use 5Ghz


My application is this. I need to use a StarTech Ethernet VGA to IP adapter (IPUSB2VGA) to send computer video from one end of a church to the other to a large screen monitor. I can mount the DIR-868L's high enough to make it line-of-sight with humans not being in the way. Distance is about 35 meters. Do you think I can get close to gigabit speeds at that distance with dd-wrt build 22118 with one unit being an AP and the other unit as a client? Any ideas anyone?

John


If you have perfect conditions you can get up to ~350Mbps real throughput, while 1200Mpbs is the theoretical rate. Note AC 1750 means 1200 in 5G + 450 in 2.4G. Therefore you won't get Gigabit speeds no matter what firmware you use.

The question is what kind of compression this adapter uses. You cannot transfer an uncompressed full hd 24bit image over wireless or wire.

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Joined: 28 Dec 2008
Posts: 7079

PostPosted: Fri Sep 06, 2013 13:07    Post subject: Re: Dir-868L AC speeds Reply with quote
JMMazza53 wrote:

My application is this. I need to use a StarTech Ethernet VGA to IP adapter (IPUSB2VGA) to send computer video from one end of a church to the other to a large screen monitor. I can mount the DIR-868L's high enough to make it line-of-sight with humans not being in the way. Distance is about 35 meters. Do you think I can get close to gigabit speeds at that distance with dd-wrt build 22118 with one unit being an AP and the other unit as a client? Any ideas anyone?

John


AC1300 is the connection speed but you can never get that transfer speed between 2 devices.
A transmitting unit must listen every now and then, there is also idle time when the radio does nothing so a good thumb rule is that you can get 40-45% of connection speed as transfer speed to a single client.
The router can supply up to 75-80% of the connection speed if you have multiple clients as there will then be less idle time for the router.

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JMMazza53
DD-WRT User


Joined: 03 Jun 2011
Posts: 121
Location: Erie, PA., USA

PostPosted: Fri Sep 06, 2013 13:53    Post subject: DIR-868L AC speeds Reply with quote
I just received a reply from StarTech technical support. To play a DVD on a computer with 1280x768 resolution, they suggest a minimum data rate throughput of 100 mbps. If I can establish a connection that can do 350 mbps, I think it should work fine. Any comments?

John
koroziv
DD-WRT Novice


Joined: 26 Sep 2010
Posts: 17

PostPosted: Fri Sep 06, 2013 15:34    Post subject: Reply with quote
I have problems with ipv6 setup with original fw, does the build posted here have functional ipv6 ?

edit : forget it, I tried and it's not working.
Cronwell69
DD-WRT Novice


Joined: 03 Sep 2012
Posts: 4

PostPosted: Mon Sep 16, 2013 16:05    Post subject: Reply with quote
Is there any more news on the WRT firmware for this router? An official forum page somewhere else perhaps?

Using the test build currently.
stebos
DD-WRT Novice


Joined: 28 Apr 2012
Posts: 5

PostPosted: Thu Sep 26, 2013 16:19    Post subject: Reply with quote
I have a question about the DynDns of this router.
Does the dd-wrt fw support more DynDNS providers ?
The original fw from dlink supports on 2 providers.
Can someone help me before I install the dd-wrt fw ?
Regards
Pandora-Box
DD-WRT User


Joined: 09 Mar 2008
Posts: 182
Location: USA

PostPosted: Sat Sep 28, 2013 17:30    Post subject: Reply with quote
Recent ddwrt FW for Broadcom routers supported up to 8 pre-defined and one custom DynDNS providers.
I would assume this would also apply for d-link.

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DarioX7
DD-WRT Novice


Joined: 31 Aug 2013
Posts: 16

PostPosted: Tue Oct 01, 2013 22:23    Post subject: Reply with quote
Someone has already tested this image for this router? As with USB 3.0 performance on DD-WRT?
Quindor
DD-WRT Novice


Joined: 26 Aug 2009
Posts: 5

PostPosted: Thu Oct 03, 2013 2:09    Post subject: Also interested! Reply with quote
Oh, a dd-wrt for this router would be very nice. I am wanting to setup multiple SSID's coupled to several VLAN's which the original firmware cannot do.

Has anyone run the test firmware and is it any good? Or should we still wait?
stebos
DD-WRT Novice


Joined: 28 Apr 2012
Posts: 5

PostPosted: Fri Oct 04, 2013 6:29    Post subject: Reply with quote
I am testing the ddwrt fw now.
All possible ddns providers are implemented and what i notice is that it is possible to boost the wifi power
until 250 mW that gives a very wide range in both frequencies.
Cronwell69
DD-WRT Novice


Joined: 03 Sep 2012
Posts: 4

PostPosted: Sat Oct 05, 2013 18:27    Post subject: Reply with quote
I have been using it for about a month now. Seems to work ok, although I have random surges of extremely high ping time(maybe a couple times a week, this never happened with the stock DIR 1.02 firmware) that I can't seem to figure out the cause of. Also twice during this time I have had problems where no device would connect to it until it had a power cycle. Not a big deal but possibly worth mentioning.
DarioX7
DD-WRT Novice


Joined: 31 Aug 2013
Posts: 16

PostPosted: Sun Oct 06, 2013 14:26    Post subject: Reply with quote
Have someone test this router with DD-WRT. Do a test and give the results. Thanks in advance.
brainiac88
DD-WRT Novice


Joined: 03 Oct 2008
Posts: 3

PostPosted: Wed Oct 09, 2013 19:08    Post subject: Reply with quote
I flashed the DD-WRT FW listed on page 1 to my 868L. None of my wireless devices are connecting to it. I can't re-flash the factory D-Link firmware either - tried all the common techniques.

Hoping a fully working DD-WRT FW comes out soon.
wgjhstt247
DD-WRT Novice


Joined: 07 Nov 2013
Posts: 1

PostPosted: Thu Nov 07, 2013 6:27    Post subject: Part 1 of 2 complete Reply with quote
brainiac88 wrote:
I flashed the DD-WRT FW listed on page 1 to my 868L. None of my wireless devices are connecting to it. I can't re-flash the factory D-Link firmware either - tried all the common techniques.

Hoping a fully working DD-WRT FW comes out soon.


I had the same problem when I only upgraded the factory firmware to dd-wrt. Others pointed out that I needed to upgrade the firmware a second time with the webflash in dd-wrt. After the second upgrade, all my wifi devices could connect to the router. I hope this helps you.

Cheers!
yihua1218
DD-WRT Novice


Joined: 06 Nov 2013
Posts: 3

PostPosted: Thu Nov 07, 2013 23:41    Post subject: Reply with quote
ttheierl wrote:
Any chance this firmware will support the DIR-868's cousin, the DIR-860L? The chipsets seem to be in the same series of Broadcom and the only difference between the two is the 860L is AC1200.

Thanks!


I added these lines into file src/linux/universal/linux-3.10/arch/arm/mach-brcm-hnd/board_ns.c and re-build the kernel, it works for my 860L.

Code:
        // for DIR-860L
        if (nvram_match("boardnum", "24") && nvram_match("boardtype", "0x0646")
            && nvram_match("boardrev", "0x1100")
            && nvram_match("gpio8", "wps_button")) {
                maxsize = 0x200000;
                size = maxsize;
        }



board_ns.c.patch.gz
 Description:
board_ns.c patch for DIR-860L.

Download
 Filename:  board_ns.c.patch.gz
 Filesize:  336 Bytes
 Downloaded:  327 Time(s)

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