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Questions tagged [gigabit-ethernet]

Ethernet at 1000 Mb/s (1 Gb/s). Can be over copper or fiber. There are different types of fiber.

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Can a 24V 1Gbps Ethernet port start operating in 100Mbps mode if it was exposed to 48V PoE?

I have heard that a situation where a 24V Gbit Ethernet port was not completely fried after being exposed to 48V current, but downgraded to fast Ethernet - 100Mbps. Question: I that possible and how?
Mindaugas Bernatavičius
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DHCP not working on RTL8111 NIC (DHCP Offer not arriving at receiver)

I'm experiencing some strange behaviour with a Dual Gigabit Ethernet NIC; I've setup a computer which has multiple network interfaces to connect some industrial cameras and setup a DHCP Server (isc-dhcp-server, Ubuntu 16.04) to statically assign…
SDwarfs
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Bringing alive a I350 Gigabit network connection for Dell PowerEdge on Ubuntu using iDRAC

[Resolved]: The network cable had been connected to the integrated NIC physical interface, which although accessible, was no longer enabled. The problem was solved by connecting the cable to the additional I350 Gigabit adapter. Stupid as it sounds,…
Ela
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Ethernet cord not detecting in centos 7

Please help me out, the ethernet modules all are loaded but i could not find remaining the two ethernet ... [root@vpn ~]# lspci | grep -i ethernet 01:01.0 Ethernet controller: VIA Technologies, Inc. VT6105/VT6106S [Rhine-III] (rev 8b) 01:02.0…
Murugan Chandrasekar
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Slow gigabit speeds with Ookla speedtest software

We have 2 speedtest servers (RHEL 6.7) sitting on 10GB links with a 10GB pipe between the two. The servers are separated geographically by about 256 miles but traceroutes look very good, with 4 hops and and avg RTT of 5ms during an Ookla speedtest…
user53029
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Slow local area network speeds

Updated on 2014-10-09 Disclaimer This question is similar to Unexplained slow gigabit network speeds but because the latter is still unanswered after 5 years, and that I think I'm able to add more details, I'm posting another question on this…
Pierre
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Connect access switches to router or core switch

My workplace consists of 4 access unmanaged network switches from three different computer rooms connected to a router. The router contains three 100mbps ethernet ports and one Gigabit (GigE) port. I'm wondering if it would increase overall…
DonD
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Why are we having problems with multiple nics in office and production networks going to 100mbps mode?

updates and additional info 2 environments, office and production at datacenter Both environments have Cat-5e cables, a cable was replaced when it tested as bad with Broadcom's cable testing, and some others cables have been switch out during trial…
dmr83457
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Why single file transfer is not faster than 50MB/s over Gigabit LAN?

I ran some tests on our gigabit network. When I transfer a big file (10GB) from a windows 7 computer to another, the troughtput never exceed 50Mb (it start at 80MB/s for one second then slows down to 32MB/s). Using simultaneous transfers from…
bokan
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Poor performance when migrated Fast Ethernet to Gigabit network

I have very strange problem. In a office computer network with about 100 PCs with mixed Windows XP SP3, Windows 7 and some Windows Server 2008 R2, I've decided to upgrade the network from Fast Ethernet to Gigabit by changing the main 100Mbps switch…
Jovani
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ethernet cable is connected but It shows unplugged

I told datacenter too connect two of my servers with a crossover cable to each other. But when I try this command ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full …
Mehdi Azizi
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Cisco sg100-08 connections

I have multiple computers, some have a 10/100 ethernet adapter while others have a 10/100/1000 ones. If I connect them together with the Cisco sg100-08 switch, do I keep the 1Gbit speed where possible (between two devices at 1Gbit speed) or the…
Terix
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Link Aggregation between Xserve G4 running Leopard Server and Netgear GSM7224

I've got a dual 1.33GHz G4 Xserve running Mac OS X 10.5.2 Server (I'll try upgrading to 10.5.7 shortly) with two Gigabit Ethernet NICs that is a backup storage server. I attempted to configure it for Link Aggregation with our Netgear GSM7224…
morgant
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Why cant I transfer files from my desktop to my server at full speed?

I have a desktop computer with two SSD's in RAID 0 with a read/write speed of 950 MB/sec (7.6 Gbps) and I have a server with 6 HDD's in RAID 5 (read/write speeds of 200 MB/sec or 1.6 Gbps) acting as a file server. Currently, both my server and my…
Christopher Haws
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Do Gigabit ethernet single-mode fiber network adapters exist?

I am attempting to set up a server with a total of four single-mode fiber ports - two need to be at least 1Gb and two must be 10Gb. I have found a variety of 10Gb single-mode fiber network adapters (for example the Intel X520-LR1 and the QLogic…
Albeit
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