1
vote
1answer
35 views

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. ...
5
votes
3answers
437 views

Gigabit uplink versus regular switch port

I have a 10/100/1000 24-port + 2 mini-GBIC ports switch which I have to link to other switches. Unfortunately, on the other switch all the mini-GBIC slots are taken up, so all I can do is link them ...
0
votes
1answer
71 views

How to change the setting for a network device reported by ethtool, specifically Speed, on VM?

This is related to these two questions, although they don't answer my question. The machines are RHEL6. 1.ethtool not showing all the properties 2.changing network speed to 1000Mb/s Output on VM: ...
1
vote
1answer
109 views

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 ...
2
votes
4answers
414 views

1GB dedicated port

I'm in the process of selecting a dedicated host for a big data project deployment. I need my servers to be well connected with each other. One of the provider I'm investigating is serverloft. Here is ...
-1
votes
2answers
323 views

Ethernet port not detected

I just added additional 1gb port to my existing 4gbs on my server. All 4 are placed on a NET CARD PCIE 1GB E1G44HTBLK 904223 INTEL and the additional one is connected to motherboard(S5520SC) ...
1
vote
2answers
697 views

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 ...
1
vote
1answer
305 views

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 ...
0
votes
0answers
151 views

bonding - balance-tlb and a mysterious ethernet packet with lots of 00:00:00

Whilst attempting to get bonding working with mode=5 (balance-tlb) it seems that the driver sends an ethernet packet with length 0x0060 and the data, payload is all zeros. I can't work out where this ...
0
votes
1answer
159 views

How do I calculate the ethernet NIC-to-NIC time to send a MTU packet (1500 bytes)? (OS-excluded) [closed]

I understand it will depend on the speed of the ethernet 10 Mbit to 100 Gbit. Given an ethernet speed, how do I calculate the time spend in the wire from NIC-to-NIC? I am assuming here that the ...
2
votes
0answers
1k views

Issue with Netgear GS108T Managed Switch and Jumbo Frames

I recently purchased a Netgear GS108T managed switch and I am trying to configure jumbo packets between my NAS (Thecus N4100Pro), PC and managed switch. I should mention the fact that I was able to ...
1
vote
1answer
181 views

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 ...
11
votes
4answers
771 views

Long Gigabit Ethernet Run

I am trying to get an Gig-E network between two buildings that are approximately 260 ft. away. While some TRENDnet switches failed to be able to connect to each other over Cat 6 at that distance, two ...
1
vote
1answer
556 views

Is 1000 Base SX fiber multimode (850nm) backwards compatible with 100 Base Sx fiber multimode (850nm)?

Is 1000 Base SX fiber multimode (850nm) interface backwards compatible with 100 Base Sx fiber multimode (850nm) interface?
-3
votes
1answer
543 views

'Gigabit' Ethernet Port Tester? [closed]

A quick google search shows there seems to only exist handheld testers for 10/100 Ethernet ports. Any ideas why that is and where we could find one that works with a Gigabit LAN? Perhaps the 10/100 ...
4
votes
1answer
12k views

Can't set up NIC to establish Gigabit link on Linux

I have Ubuntu 11.10 64 bits with one (actually two, but only one is connected) Intel 82578 Gigabit Network Card which is working on 100 Mbps and I want it to work on 1000 Mbps, but I can't. How can I ...
1
vote
1answer
419 views

2 NIC's are not loading by the Ubuntu Server

I have a Server with 5 NIC's. And I have just installed Ubuntu Server 11.10 64 bit fully dist-upgraded by now (31 Jan) 3 NIC's are identical PCI-Express x4 adapters. 1 is integrated TG3 and the last ...
1
vote
4answers
2k views

Having an issue trying to get Gigabit speed across my network (Ubuntu Server)

I've just started looking into the network speeds at my office, the entire network is setup to be "Gigabit". This includes Gb switches, Gb Network cards and Cat 5e cabling. I'm not expecting the full ...
0
votes
2answers
563 views

Link Aggregation And Jumbo Frames configured but not working

I have a netgear GS110TP smart POE switch which is connected to a dual port INTEL PRO/1000PT with static link aggregation configured on the switch and PC side. The network card and switch recognize ...
2
votes
4answers
916 views

Upgrade to gigabit - is it worth it?

We are running two servers with around 30 workstations as follows: 1 x UNIX Server 1 x HP Proliant Server - Windows Server 2008 30 x Windows XP Professional SP3 5 x Axel Thin Clients 16 x Avaya ...
0
votes
4answers
275 views

LAN speeds and firewall/switch connections

I have a small network with about ten users. All workstations flow into a Dell PowerConnect 3424 which then has a single link to a SonicWALL firewall and from there to a cable modem. More important ...
3
votes
4answers
1k views

Ethernet switch capacity question

We're looking at hooking up 48 small embedded systems with 10/100 Ethernet ports to an Ethernet switch and then have that switch talk to a server upstream via a faster connection. I have a couple of ...
2
votes
2answers
189 views

What percentage of its capacity should I aim to run a network at?

First of all, apologies if this is the wrong StackExchange site for this question - it's about Ethernet network capacities, but not specifically about servers etc. I am designing a network for a data ...
6
votes
6answers
2k views

Windows 2008 Server on mixed ethernet speeds — download from share slow, but fast plain TCP

I have a Windows Server 2008 R2 x64 server that is AD controller and file server. I have a problem that Windows XP clients experience terribly slow (less than 10Mbps, really less than ...
6
votes
3answers
6k views

Bonding 2 or more Gigabyte NIC together to get 2Gbps performance between 1 server and 1 client?

I have not gotten the server or the NIC yet, but here is the target setup: 1x Server 1x Client 1 or more NIC linked point to point between the Server & Client (No switch involved) So I am ...
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 ...
6
votes
3answers
449 views

Gigabit capacity

Do gigabit ports have a total throughput of 1 gigabit so that you could be sending 800 mbit and receiving 200 mbit at the same time. Or is it 1000 in and 1000 out?
22
votes
6answers
17k views

What is the minimum ethernet cable length for a CAT6 gigabit connection?

We run a Netgear GS724Tv3 switch and part of the configuration per port is an option for "Lower Power Mode". The documentation for the switch lists this feature as a "Green Ethernet Configuration" ...
1
vote
2answers
1k views

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 ...
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 ...
5
votes
9answers
6k views

Why does 1GBit card have output limited to 80 MiB?

I'm trying to utilize maximal bandwidth provided by my 1GiB network card, but it's always limited to 80MiB (real megabytes). What can be the reason? Card description (lshw output): description: ...
6
votes
5answers
6k views

Gigabit with cat5 cable

Can a standard cat5 cable transmit at a speed of 1000 Mbit/s ? I've asked several people I know in the networking field and received different answers. I know a cat5 "works" on a Gigabit network but ...