Questions tagged [gigabit]

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What type of hardware is required for a Gigabit connection?

Just in case the question I am asking is unclear or hard to understand, I am basically asking whether or not the type of hardware in a machine (such as a router or server) matters when using a gigabit ...
joeldesante's user avatar
1 vote
1 answer
103 views

Data throughput on gigabit POE PD link?

I am thinking about installing a POE switch in my gigabit network. I only need the switch to draw power from the network (PD link) but not supply it to other devices (so no PSE links). What impact ...
Stephen Winnall's user avatar
4 votes
6 answers
3k views

Router limits network performance but its CPU load isn't 100%

I'm using a PC Engines APU device running FreeBSD as a NAT router. The setup is very usual: one WAN connection and one LAN connection. Theoretically, WAN connection is 800/40 Mbit/s and the LAN one ...
Ecco's user avatar
  • 121
3 votes
3 answers
4k views

Testing network connectivity on a server with Gigabit Ethernet

I have a box with Gigabit Ethernet, and I'm unable to get past about 200Mbps or 250Mbps in my download tests. I do the tests like this: % wget -6 -O /dev/null --progress=dot:mega http://proof.ovh.ca/...
cnst's user avatar
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0 votes
1 answer
771 views

How to achieve gigabit speeds with Ubuntu using bonding?

I'm working with the bonding driver on Linux (Ubuntu 12.04.2 LTS). I have 2 PCs with 2 NICs (gigabit ethernet - Intel 82574L) in each one (in total, 4 NICs). I want to improve my TCP throughput over ...
user169597's user avatar
9 votes
3 answers
4k views

Lower TCP throughput from 1Gbps server than 100Mbps server over large RTT

We've got infrastructure distributed in a few major locations around the world - Singapore, London and Los Angeles. The RTT between any two locations is over >150ms. We've recently upgraded all of ...
Sam's user avatar
  • 201
0 votes
1 answer
108 views

Gbps to 2 100Mbps clients

If I have a media server with a gigabit NIC connected to two 100Mbps xboxes on a gigabit switch, will both receive from it at 100Mbps or will one connection put the server's NIC in a 100Mbps mode and ...
Shawn's user avatar
  • 103
8 votes
2 answers
1k views

Can I have 2Gbit over 1Gbit Nics [closed]

So this really baffles me. Apparently because 1Gbit can transmit data in both directions simultaneously it should be possible to get 2Gbit of data transfer on a single NIC (1Gbit flow seend and 1Gbit ...
ivenhov's user avatar
  • 181
4 votes
5 answers
11k views

Stacking two Netgear GS748TS switches via HDMI - only 1Gbps trunk bandwidth?

I have two Netgear GS748TS 48 port gigabit stackable switches, which when stacked via two HDMI cables allow hosts on one of the switches to talk to hosts on the other. Netgear claim that the HDMI ...
ilumos's user avatar
  • 173
1 vote
1 answer
1k views

Dell equivalent of Cisco Span

We are in the process of upgrading out network to Gigabit to the desktop. Currently we are using this equipment... CUCM (Cisco Unified Communication Manger 8.0.3.20000-2) Cisco 2821 Integrated ...
Sam Sanders's user avatar
2 votes
5 answers
3k views

homemade open source gigabit firewall with enterprise grade [closed]

Has anyone DIYed a *BSD/Linux based firewall that can handle gigabit traffic, running reliably for years? There are quite some software solutions but is there a hardware baseline to achieve reliable ...
John's user avatar
  • 29
6 votes
2 answers
1k views

Gigabit network with a 100 megabit firewall

We have set up all the equipment necessary to have a gigabit network. All servers + workstations are running gigabit cards, just bought a 16 port switch that can handle gigabit as well. My concern is ...
MikeMurko's user avatar
  • 204
7 votes
3 answers
4k views

Can gigabit media converters affect performance?

We are looking to upgrade our network infrastructure. We have fiber between our IDFs and our MDF but have found fiber core switches to be significantly more expensive than copper. If we were to have a ...
obsidian's user avatar
  • 194
1 vote
2 answers
605 views

Draytek router port usage?

We have a Draytek router which is connected to our primary switch (Nortel) using the lAN port (which is also the port labelled 4). I noticed that there is a port reserved for gigabit Ethernet. ...
dannymcc's user avatar
  • 2,707
1 vote
2 answers
498 views

Managed switch, what is the purpose of the two gigabit ports?

We have a managed switch that has been installed by phone engineers as part of our new IP phone system. The switch in question is a Nortel 2550T-PWR Ethernet Routing Switch 2550T-PWR with 24 10/...
dannymcc's user avatar
  • 2,707
1 vote
1 answer
1k views

Direct connect (peer to peer) two servers with 10GbE SPF+ ports?

Someone asked earlier whether it would be possible to direct connect two systems with 10GbE CX4 ports here: is it possible to direct connect a client and server with 10GBASE CX4 copper cables?. My ...
Ville's user avatar
  • 267
0 votes
3 answers
3k views

How do I maximize and check my gigabit transfer rate?

I'm trying to maximize my LAN transfer speed. LAN cards and switch are all gigabit on a CAT 6 cable. Modes are set correctly to 1000 full duplex. CentOS server Testing with ftp from both windows ...
J Penguin's user avatar
  • 131
3 votes
3 answers
3k views

replacing an ethernet backbone with fibre optic

I live and work in a building that is nearly 20 years old. My Internet connection is in the cellar along with my servers and has a nominal rating of 100 MBit. I have a gigabit switch in the cellar ...
Stephen Winnall's user avatar
0 votes
2 answers
2k views

Cisco SG300-28 vs Cisco/Linksys SRW2024 | Managed GB Switches

I'm trying to get a good managed Gigabit switch for our new 1/2 server rack, which will have about 6 servers within the next couple of months, plus firewall. From a pricing standpoint, both of these ...
AX1's user avatar
  • 1,279
3 votes
7 answers
550 views

Heavy bandwidth intranet

We are an animation studio and we have an intranet that constantly needs to move large files (2 GB+) around the network. We have the following config: Three Netgear 24 port unmanaged switches. Switch ...
Andy's user avatar
  • 31
6 votes
4 answers
3k views

Gigabit Network - Test

I have a very basic and newbie question. I was told that we have a "Gigabit Network". So, I ran a quick scp test by copying a file to another machine and the transfer rate is only 35MB/sec. Shouldn'...
Carmen's user avatar
  • 807
2 votes
1 answer
146 views

1Gigabit vs 1.25Gibabit mismatch

I need to re-connect the network to a small old outbuilding that hasn't been used in several years. I have to use the existing 62.5um multi-mode fiber run. This end of the fiber is already connected....
Joel Coel's user avatar
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3 votes
2 answers
4k views

How to get gigabit network speeds on Windows XP?

We've just installed gigabit switches at work, and things on the Linux side are going well. Our linux boxes, which use a Intel Corporation 82566DM-2 Gigabit nic (according to lspci), consistently get ...
JB.'s user avatar
  • 161
0 votes
5 answers
3k views

What would make a PowerConnect Gigabit switch run at 100 Mbit speeds?

I am pretty much a total "serious" networking newbie, so I am sorry if this is really stupid. I bought a Gigabit PowerConnect 2824 switch and tried to install it onto our very small start-up network,...
user avatar
0 votes
2 answers
1k views

Connecting two 16 port gigabit switches

I have connected a second Netgear Prosafe 16 ports switch to a new rack of blade servers. I assumed that when added there would be 32 ports less the one to the incoming Internet and the one port on ...
Johnnycobra's user avatar
0 votes
3 answers
2k views

Gigabit Dual WAN Cisco or Juniper Router / Firewall?

Hi I am currently looking for a Gigabit Dual WAN Cisco or Juniper Router / Firewall. Can someone please make a recommendation for me. I cannot find anything Thank you!
user avatar
0 votes
4 answers
4k views

GigE ethernet switch backplane bandwidth

While looking for a 16- or 24-port gigabit ethernet switch with at least 6 VLANs and port mirroring (packet duplication to a monitoring port), I came up with three candidates (there are more): Cisco ...
Paul's user avatar
  • 1,918
18 votes
15 answers
30k views

Unexplained slow gigabit network speeds

Update Ok, I've tried the answers below and nothing has changed. I've identified the chipset in the laptop as the NVIDIA nForce 520. I downloaded the latest Vista x64 drivers for the nForce 520 (...
Joshua's user avatar
  • 1,546
1 vote
5 answers
7k views

Gigabit not working with Hyper-V VMs (?)

So we got a shiny new 48-port switch that supports Gigabit. Between two computers, with CAT5e cables I get 20-35 MB/s, which I guess could be improved even more with CAT6 cables. But for some reason, ...
KTamas's user avatar
  • 589
2 votes
6 answers
331 views

information about ethernet cards

I have few question and I don't find right answers. What's the maximum speed of an Ethernet cable (not a phone cable! the one that has 8 threads) About the Gigabit Ethernet Network Card: Is it just a ...
Omar Abid's user avatar
  • 201