Realtek RTL8168D - How To Operate At Gigabit Speeds
Sep 1, 2011
I recently said to hell with wireless and wired my apartment with Cat6. My desktop computer next to the router is running fine at 1Gbps. My media center one room over is only running at 100Mbps, and I cannot figure out why.
The motherboard has a Realtek RTL8168D . I have green ethernet enabled... could that be it? Auto disable gigabit is disabled. I tried changing speed & duplex from Auto to 1Gbps, and that didn't change anything. The latest driver is installed. Their ethernet diagnostic utility shows the link speed at 100.
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Aug 8, 2012
I am having a problem with my Realtek RTL8168D/8111D PCI-E Gigabit Ethernet NIC. It is not detecting my ethernet cable, and thus leaving me without internet on my desktop, after i updated its driver. The cable is not the problem as I have tested the cable with my laptop. I tried rolling back drivers, doing system restore and removing drivers with driversweeper and letting windows install the drivers again. However, none of these worked for me. I doubt the NIC is faulty as it was working before i updated the drivers. I am using windows 7 home premium 64-bit.
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Jul 18, 2011
I have a Gigabyte motherboard that ive just installed into my dads new PC and the gigabit LAN has started taking 60 seconds to connect to router, very annoying...sitting with browser open waiting for it too connect... the issue seem to first appear during windows updates, i uninstalled device driver, rebooted and reinstalled the driver off disk... this sorted the issue.. THEN windows installed more updates, however these were nothing to do with networking (Office updates) and its back ...ive tried downloading the driver from gigabyte (newer) but still the problem persists...
Core-i5 2500k
4Gb 1600Mhz RAM
GTX 460 OC
60Gb SSD Vertex 2E
500Gb Seagate SATA-II
Gigabyte P67A-D3-B3
Windows 7 x64
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Jan 13, 2012
I want to get gigabit speeds on my existing 10/100 UTP cabling. I read that I just need to buy a gigabit switch to replace my 10/100 and I'm good to go since all my computers' motherboard have onboard gigabit lan. How true is this?I'm getting 100mbps (LAN) speeds on my current setup but I really need to up it to gigabit speeds.
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Jun 26, 2013
So I finally got all my parts delivered to setup a home file/backup server this week.
It's currently running Ubuntu Server and I'm using Samba to share files on my network.
The server currently has a 2TB WD Green drive in it connected to a Asus M5A78L-M
This is then connected via CAT6a to my new Gigabit switch (TP-Link TL-SG1005D).
My home desktop is then also connected to this switch and again also through CAT6a cable.
Currently when transfering files I will get a perfect 100MB/s read from the server to my Windows machine. When copying from my Windows machine to the server I get around 30/38MB/s.
I know this drive is capable is faster speeds.
I have found ftp's write speed is much closer to what my Samba read speed is so I'm going to give it a guess that is a software problem rather than hardware
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May 19, 2011
Cable modem into cisco-linksys E4200. 2 of the ports going out from the router plug into the wall, where one goes to the master bedroom and one goes to the living room. Once it gets to the wall jack in each of those rooms it goes out to a gigabit switch. Each of those two rooms has a computer and a TV connected, and the living room as a blu-ray also connected to the switch.The third port going out from the E4200 router goes to another gigabit switch, which is connected to a couple more computers in that room.All of the cables are either cat5e or cat6. The long cables running through the wall from the server room to the living room and master bedroom is 24gauge 4pair cat5e, it was run by a general contractor.
When I transfer between any of the computers on the network as it sits I get 11MB/sec. I get that number by clicking more details on the file transfer. In the network tab of task manager it sits pretty consistently at 10%.If I move any of the computers to be connected to the SAME switch (i tested all 3) i can transfer around 60MB/sec.Based on this testing my initial instinct is to say that the cable running between the rooms is limiting the transfer speed. However the cable is cat5e and rated for gigabit. Neither of the runs are anywhere near 300ft long. Plus the consistency of the transfer speeds at 11MB/sec makes me think it's being clearly capped at 100base-T speeds as opposed to just slowing down due to interference of the cable.As a side note there is a place in the router that tells you the speed of each port. For some reason it has one of my ports listed as gigabit and the others listed as 10/100Mbps. The yellow 3 foot cable i have is listing as gigabit, when i swap it with another cable in the router it changes the gigabit port to the one this yellow cable is on, very odd, however regardless of whether the router says its gigabit it only transfers at 11MB/sec anyway.What I'm wondering is what could be causing this limitation besides the two cables running through the wall? Is that the only thing that could be doing it? What is the best way to really test it out? Do I need to buy some kind of network testing device that tests throughput?
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Sep 26, 2012
I have an Ethernet Loopback Plug (4 Pairs) made and trying to test the Gigabit Interface on a 3845 Router with a fail result. The interface will show up/up only if I set the interface to 100M/Full Duplex when I plug-in the Ethernet Loopback Plug (4 Pairs). I don't see this Gigabit Interface @ 3845 router has any option to set it to internal or external loopback.
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May 19, 2013
My Belkin F7D4301 Router has the fastest wireless speed of maybe 2MBps but wired with a cat5e cable to my asus laptop of almost 7MBps. I have a one smart TV, one blue ray, one roku, and a nexus 7 using the 2.4 channel.
My Wireless 2.4 settings are channel 11, Extension channel 7, Wireless mode N (have tried with just g and b, g, and n modes), Bandwidth 20/40, Protected mode on, QOS off.
I've talked to Belkin tech support, they are the ones who had me set up my 2.4 channel this way but my wireless speeds stay just under 2MBps, they just want to keep sending me the same model Router because they think each of the new ones they send me is defective.
Am I doing something wrong or is 2MBps the best wireless speed I'm going to get?
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Nov 23, 2011
I'm running an Optiplex 330 with the Broadcom NetXtreme 57xx Gigabit ethernet card.
The computer is running Windows 7, 64bit, but there do not appear to be any drivers for that OS.I tried selecting Vista 64bit, but there were no drivers. The Vista 32bit doesn't work.
Then I went to Broadcom and found these drivers: [URL] the W764bit drivers didn't change the fact i'm still on a 100Mbit card (as seen on Local Area Connection Status screen and the Device manager)
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Jan 30, 2012
Are there any fax machine that operate without a landline
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Jul 8, 2012
I have Cisco AP 1142 standalone and I want this one to operate with WLC.
I have searched in Google, they said I need to upgrade AP1142.
I don't know how to upgrade it.
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Mar 26, 2012
I am designing a network internet connection to our 20 apartment block. The WAN is Ultima up to 40mb/s and the take up is expected to be modest in terms of throughput. However I have been told that two apartments want to run their own non commercial web sites which currently operate on adsl with ddns provision from TZO. The netgear vdsl router supplied by the ISP will obviously have port forwarding but how do I cater for more than one LAN destination requiring port 80 traffic??Surely I dont have to have an in-block DNS.
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Jan 23, 2011
I have forgotten my security key in order for my new computer to connect to the internet wirelessly. What is the easiest way to find that security key?
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Feb 9, 2013
I would like to operate a design program and have access to the internet on a 32 inch television wirelessly from my laptop. What do I need?
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Oct 18, 2011
I selected: Static IP
Static IP:192.168.0.100
Subnet: 255.255.255.252
Gateway:192.168.0.1
DNS: 60.49.166.105
I am a Malaysian, using Streamyx here, I search some articles shows that the ISP given is 60.49.166.105 or 60.49.166.106. Am I right in the setup? Why I am still unable to online though successful to connect after the setup configuration?
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Jan 24, 2012
Can operate simultaneously multiple external DB in ACS 4.2?Mutiful External DB server is AD and Token server
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Aug 8, 2010
I have an ESW-500, a SPA525G (also tried 504G), Polycom IP330/670 phones, and a Switchvox (Asterisk-based IP-PBX) and CDP causes some issues.Both the SPA5xx and Polycom phones support CDP but it appears to operate differently between the phones. And, surprisingly, worst of all on the SPA's.
In short:
* Switch - CDP enabled (VLAN 100), DHCP disabled (Option 82 enabled) which is basically how it comes out of the box
* Polycom phones - CDP enabled (default)
* Cisco phones - CDP enabled (default)
* DHCP/TFTP server on port 1
* Phones on ports 7,15,19 - default as smartports for Desktop & Phone
* Switchvox on port 17 - port configured as General (not Trunk) with 1U & 100U VLANs. This was required to get Polycom phones to appear in Switchvox config
With that configuration the Polycom phones work perfectly. They appear in the switch web-GUI under CDP, they present in Switchvox and can be configured.But with that configuration although the Cisco phones appear in the CDP screen they do not get DHCP. My DHCP server can see 'DHCP Discover' messages but it just goes around in circles. Disabling CDP on the switch will allow the phone to get an IP but disabling CDP on the phone still has the same problem. When I saw "around in circles" this is what I mean....
Rcvd DHCP Discover Msg for IP 0.0.0.0, Mac 00:25:84:06:12:46 [10/08 13:51:27.031]
DHCP: proposed address 192.168.100.16 [10/08 13:51:29.000]
4064 Request 2 not processed [10/08 13:51:29.062]
Rcvd DHCP Discover Msg for IP 0.0.0.0, Mac 00:25:84:06:12:46 [10/08 13:51:30.093]
DHCP: proposed address 192.168.100.16 [10/08 13:51:31.593]
4064 Request 2 not processed [10/08 13:51:31.656]
[code]....
With the difference being there's a 'DHCP Inform Msg' which there never is from the Cisco.I have tried many options regarding DHCP Relay, DHCP Server addresses, DHCP VLAN Interfaces, smartport settings etc but with CDP enabled the Cisco phone just will not get DHCP.
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Nov 6, 2012
I have my broadband line feeding into a WAG 320N in an outside room. There are computers in the outside room which are wired to the modem via CAT leads & plugs. Wireless is turned on, but is not currently being used in this room, as the wired connections work fine. From this outside room there is an underground cable (12 metres) to the house, which through a CAT lead is plugged into another WAG 320N, which operates primarily wirelessly, so laptop computers can be used in the house wirelessly. When the outside room modem is turned on AND the house modem is turned on, only one modem OR the other can access the internet, NOT BOTH. Why can't both modems operate wired and wirelessly. What is the problem? Is there a conflict between the two wireless signals? Can/ should I turn off the wireless signal from the outside modem (if so HOW?) . OR is there a way I can have both modems transmitting a wireless signal.
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Jun 20, 2011
I'm looking after any driver wich can operate the WUSB600N v2 under Windows 98 at an old computer who is not able to operate with WinXP.Is any "freak" there who knows wich driver can be used for it? (Perhaps as well an older driver from any other older CISCO wlan stick ... ?)
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Mar 21, 2012
..I am connecting a Nexus 5K to a 6509 without VSS. Is the recommended configuration just straight etherchannel? Since the 6509 cannot do vpc, is an etherchannel the best way to configure this uplink? How does spanning-tree operate.
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Feb 22, 2012
Is it possible to easily operate both Prime Fulfillment 6 AND LMS 4 on single Solaris 10 server?
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Mar 1, 2013
Can a Cisco 2921 handle a 100mbps connection plus operate BGP with partial updates? I am worried about the CPU.
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Feb 23, 2011
Recently i have visit some site for survey of wireless (WiFi). My client ask to provide the Access Point inside the Cold storage of factory( For RF scanners) The temperature of the place is -25 C to -30 C. I have go throug the wireless option of cisco like 1200 series, 1100 series, 3500 series, but all of these operate maximum of -20C. while only out door access point ( cisco 1500 Series ) support such low temparture.
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Feb 23, 2012
I have a E4200 router. The firmware version is 1.1.02. I am reluctant to upgrade; however, my iMAC is picking up the 5GHz broadcast setting, but the rest of my wireless devices only recognize my lower 2.4GHz setting. I have changed channels, my router address is changed because it conflicted with my Verizon DSL. I do not have FIOS. What can I do to fix this problem. I have an ipad, 2 iphones, 2 ipod touches, 2 laptops (PCs), an XBOX, and a PS3 that needs to connect to a higher broadcast. The connections are slow and at times get dropped.
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Feb 5, 2011
I just finished installing a realtek wireless lan but I don't know why in the tray says it is disconnected. I open the config utilily but I don't see anything to make it work. I'm using vista. I check here and I click the Radio check mark but doesn't seem to make any difference.
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Jan 10, 2013
Just recently built a new system with this wifi card in it, and I am experiencing random lag spikes of up at 2000ms when pinging my E3000 router. I've tried the stock firmware on the router as well as the tomato variety I was using. I've tried both Windows 8 and Linuxmint 14 and the problem still exists. I did not have this issue on my laptop, nor do I have the problem with my wife's laptop. Is there any sort of setting in the bios that might affect this that I am overlooking?I'm about to just call timewarner and have them relocate the cable modem to this room so I do not have to deal with wireless.
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Mar 25, 2013
I have accidentally deleted my realtek, how do I get that back? Accidentally deleted Realtek Driver
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Sep 18, 2011
All of a sudden, my ethernet port isn't being recognized. It doesn't show up in device manager, and i get an error: "The Realtek Network Controller was not found. if deep sleep mode is enabled please plug the cable" when attempting to install the driver for it. i'm using the ethernet port on my gigabyte h67m-ud2h-b3 motherboard and i got the drivers from gigabyte. its as if i don't have an ethernet port it was working a few days ago but now, nada
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Apr 23, 2013
Everything was working fine, I was able to make everything work fine. Then yesterday morning I started up my computer and it was not connected to the internet. My ethernet was plugged in and everything was as it should be. I went in to device manager and noticed that my realtek network controller was not in the device list under network adapters. I then tried to reinstall my LAN drivers from ASUS (my motherboard) which is how I got it to work in the first place. However, this time when it "finishes" installing an error pops up and says "The realtek Network Controller was not found. If deep sleep mode is enabled Please plug the cable."
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Oct 18, 2011
I have a Realtek PCI GBE Family Controller. I recently reinstalled Win7 and it loaded drivers for the card automatically. I actually didn't notice the speed issue until I went to move stuff around on the home network.
The Device Manager lists the above NIC. Under Properties I have:
Auto Disable Gigabit = Disabled
Speed & Duplex = Auto Negotiate
I tried setting Speed & Duplex to 1.0 Gbps Full Duplex but I only interrupted a file transfer by doing this. (The Network icon in the System Tray indicated that the network connection was lost.)
I am using Cat5E 1 Meter or less cables. I have 2 PCS next to my desk with a D-Link Gigabit Switch sitting on top of one of the computers. AFAIK all ports on the switch support Gigabit.
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Jul 11, 2011
I have a realtek wireless usb adaptor on my hp desktop that was working until I took it out of the usb on the front of the tower and plugged it into a usb on the back of the tower. Now I can't get internet at all even if I move it back to the front! My network doesn't show up under connections. Both the playstation 3 and the netbook are picking up the wireless signal from the router.
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Feb 21, 2012
Earlier today i bought a new setup.
ASUS P8Z68-V LX
i5 2500k
Kingston HyperX 1600
Corsair Force 90GB ssd
ASUS GeForce GTX 560
OS: Win7
Everything works fine except the onboard lan doesn't work.Windows shows that there is no cable connected even though it is connected and it works. Currently I'm using the cable to write this on my laptop so that's proof that it indeed works. The bios settings for the adapter are set to enabled. I have tried the weird stuff, like unplugging for 30 min and starting again and reseting bios and holding the powerbutton for 10 sec with powercable unplugged.The cable shows that it's connected when i set speed and duplex at 10MB/s, full or half duplex, and I can ping the router but the internet eludes me.There has been no thunderstorm in the last 23 hours, I have tried the latest lan drivers from both Realtek and ASUS, there has been no windows update to mess with the system and I've tried formatting and setting up windows again.
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Apr 14, 2011
I bought a reconditioned Dell Inspiron 1000 which had the above loaded. In fact, everything was ready loaded on the laptop, so I do not have any disks. My laptop started jamming and so I closed down all things open on it, which unfortunately included closing Realtek (which seemed to be always open). I then could not 'reopen' the Realtek stuff loaded, it wouldn't let me.I am using a Belkin wireless g card in the laptop which came supplied with it. I thought the Realtek stuff was to with this. My internet connection keeps failing for no reason now.I don't actually know what the Realtek software/drivers/whatever were doing.
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