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0
votes
3answers
395 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 ...
0
votes
1answer
293 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 ...
9
votes
3answers
1k 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 ...
0
votes
1answer
78 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 ...
7
votes
2answers
361 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 ...
3
votes
5answers
4k 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 ...
1
vote
1answer
7k views

Max distance for cat5e in 1000Mbps / 1 Gigabit

What is the max distance for cat5e cables in 1000Mbps (1 Gigabit) Full Duplex mode?
1
vote
1answer
589 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 ...
2
votes
5answers
1k 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 ...
6
votes
2answers
600 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 ...
7
votes
3answers
312 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 ...
1
vote
2answers
223 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. ...
1
vote
2answers
324 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 ...
1
vote
1answer
647 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 ...
0
votes
3answers
2k 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 ...
2
votes
3answers
542 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 ...
0
votes
2answers
1k 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 ...
3
votes
7answers
410 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 ...
5
votes
5answers
1k 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. ...
2
votes
1answer
103 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 ...
3
votes
2answers
2k 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 ...
0
votes
5answers
2k 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 ...
0
votes
2answers
553 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 ...
0
votes
3answers
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!
1
vote
4answers
2k 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 ...
18
votes
14answers
15k 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 ...
1
vote
5answers
4k 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, ...
2
votes
6answers
292 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 ...