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Questions tagged [gigabit-ethernet]

Gigabit Ethernet (GbE or 1 GigE) is a term describing various technologies for transmitting frames in a network to a speed of Gigabit per second (1,000,000,000 bits per second), defined in IEEE 802.3-2005.

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Why am I getting 950 Mbps up but only 360 Mbps down on Gigabit Ethernet?

I got two desktop computers talking to each other directly. They both have Gigabit Ethernet capable network adapters. That's 1 Gbps or 1000 Mbps. I have them connected with a brand new 10 meter long Cat6 UTP straight cable and I get pretty close to…
Samir
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Why do I only get 300-400 Mbit/s on my 1000 Mbit/s network?

My setup is like this: Laptop <--> Router <--> Desktop They all support gigabit Ethernet. I'm using the 'iperf' TCP/IP benchmark on the laptop and desktop, and I've never gotten more than 400 Mbit/s raw throughput. The laptop is an Intel Core 2 Duo…
davr
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How do I find out the speed of an Ethernet cable?

During the years I've collected many ethernet cables. I'd like to know the speed of each one (10Mbit / 10BASE-T or 100Mbit / 100BASE-TX or 1000BASE-T). How could I find out the speed of each Ethernet cable? Most cables have codes written on it but I…
Giorgio
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Maximum Bandwidth through gigabit switch

This seems like a simple question, but I can't find a definitive answer for it. I have four devices connected to a Gigabit switch as in this diagram: Can I get the full GBit bandwidth from A-B simultaneously as C-D are maxing out their link? Or,…
Sam
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What happens when Gigabit switches are connected over an old CAT5 cable?

If two gigabit switches are connected using an old CAT5 (not CAT5e) cable, will they slow their connection down to 100 Mbit/s?
basic6
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check if my ethernet controller supports gigabit Ethernet

Is there a command that i can issue in Ubuntu to see explicitly if my ethernet controller supports gigabit ethernet?
şaloma
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Why is my LAN not gigabit?

The in-wall CAT5e LAN cabling in my newly built house (photos during construction) is weird: it works perfectly fine except it only allows 100Mbps and not gigabit. To clarify, the wired LAN "connection information" in both Windows and Ubuntu says…
Torben Gundtofte-Bruun
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Over gigabit connection, Teracopy does 31MB/s, but Windows 8 does it at ~109MB per second?

I got my brain-melting first taste of Gigabit networking today, between my 2011 MacMini and Windows 8 Pro desktop connected via Cat.5e to Linksys WRT320N(sporting dd-WRT). After making sure that the line speed on both systems showed 1Gbps, I…
Gaurang
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Ethernet and networking speeds as "500 Mbps Gigabit"?

I am quite confused with networking and speeds and such. I want to buy something so its throwing Google off - if I type in the keywords I just get websites selling the products I want, not information about them. (Sometimes Google's too good for its…
Thomas Clayson
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Gigabit Ethernet full-duplex is actually 2Gbit/sec counting both ways?

My understanding is that gigabit Ethernet over twisted pair, 1000Base-T, is full-duplex by default. Does that mean that the actual bandwidth, can be 1 Gbit/sec in each way simultaneously, hence 2 Gbit/sec counting both ways? In comparison, Wi-Fi is…
QnA
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Will using a 10/100 router stunt gigabit switch speeds for an internal network?

I have a 10/100 Verizon router. 3 computers are connected to this via Ethernet. I'd like to put a gigabit switch between the computers and router to enable gigabit speeds on the intranet. If the machines are still using the 10/100 router as a…
Dane O'Connor
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LAN speed differences between Cat5e and Cat6/6e cables?

From what I heard, cat5e ethernet cables are fully capable of supporting gigabit ethernet at full speed. However, I have also heard that gigabit speeds are not fully unlocked until you use cat6 or cat6e cables. Can someone explain that the…
hpy
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When connecting two switches, should I use normal switch ports or the SFP ports?

I have two 48 port gigabit Netgear switches with 2 SFP ports each (I also have two Mini-GBIC copper transceiver modules) Is it best to set the ports up by using the built in ports (i.e. plug port 1 of switchB into port 48 of switchA and port1 of…
Crash893
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What connectors do I need for Cat 7 cable?

SOLUTION: I have found RJ45 connectors that are compatible with Cat7 and can also be used with the standard cat 5/6 crimpers. These do not provide speeds higher than would be expected of Cat 6a, and are a bit more expensive, but at least I can use…
Matthew
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What's the typical performance of Windows File Sharing (SMB) on a gigabit ethernet network?

I've recently set up Windows file sharing over a gigabit ethernet network (I'm not using jumbo frames) with a Samba server and a Windows Vista client. I've done a few file copies, but the maximum throughput I'm seeing is 20MB/s (megabytes, not…
Kaypro II
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