0
votes
1answer
20 views

Connect main (serving) PC to router or to switch in high traffic LAN?

I am restructuring my home network after finally upgrading my aging Linksys WRT54G router to an Asus RT-N66U. All desktop computers are gigabit ethernet wired connections utilizing multiple switches. ...
0
votes
1answer
39 views

Can i join one server with multiple ethernet wires to switches

I saw one video where the user has one 100mb switch and other Giagbit switch. Then he has his all servers first network card connected to 100mb switch and second to the Gigabit switch he says that ...
0
votes
3answers
722 views

Running Ethernet over two phone lines

I am trying to run Ethernet through my house along existing phone wires. I had originally planned to use the phone wires to pull the cat5e cable, but it appears the phone lines are stapled to studs ...
30
votes
7answers
2k views

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 ...
1
vote
1answer
223 views

How to test the throughput between 2 Network adapters on the same PC? [closed]

The motherboard of my desktop PC features two Ethernet ports. Each port has its own network controller from Realtek and they are both capable of Gigabit Ethernet. Now, I have this crazy idea to take a ...
0
votes
1answer
43 views

Preventing Gigabit Loss due to printers [closed]

HOW CAN I MAINTAIN Gigabit Ethernet integrity given this situation: What I have to work with: ** AC-router w/4 port gigabit N-600 router w/4 port gigabit Switch w/8 port gigabit All PCs have ...
1
vote
0answers
143 views

same pci bus address for pci slot and on board ethernet port?

The pci slot address shown is same as the one shown for on board ethernet card. There is a conflict. Not sure how to resolve it. Various command output are dmidecode -t 9 | grep 'Bus Address' ...
1
vote
1answer
201 views

Effect of adding Ethernet 10/100 printers to a gigabit network

Everything here is gigabit (NICs, router and switch) except for two ethernet 10/100 network printers. Will attaching them to my switch slow the whole network down?
1
vote
2answers
2k views

Plugged-in network cable is not detected (possibly related to green ethernet?)

I have just purchased a D-Link DIR-652 wireless router, and now I want to connect a Shuttle XS25GT V2 computer using a 1 metre Cat 5e ethernet cable. The Shuttle runs Ubuntu 12.10 and has a JMC250 ...
2
votes
2answers
805 views

Why wouldn't an ethernet interface advertise gigabit speed if it's capable?

I have a laptop with a gigabit capable ethernet interface: # lspci -vvnn -s 08:02.0 08:02.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8110SC/8169SC Gigabit Ethernet [10ec:8167] ...
3
votes
1answer
4k views

Can I mix CAT5 and CAT6?

I'm thinking of upgrading the "backbone" of my network, taking a CAT6 cable from my router (DLINK DIR-655 (has cat6 ports)) to a gigabit swith in the tv rom (25m). I have two devices there that uses ...
2
votes
2answers
884 views

Does using cat5e cables yield any disadvantages in combination with cat6/cat6a network?

If I were to have a fully compliant cat6 or cat6a network running through my walls... that is to say, wires and jacks... What would be the concequence of plugging a cat5e wire into one of the jacks? ...
1
vote
2answers
950 views

NIC works at 100Mb, not 1Gb - how to diagnose?

I have a (crappy) home media server with an onboard NVIDIA MCP77 Gigabit LAN chip (under Ubuntu 10.04 Lucid). This is connected to a Virgin Media SuperHub (VMDG480) which contains a gigabit switch via ...
0
votes
1answer
525 views

Connect two devices directly with twisted ethernet cable without disconnecting from wifi?

I have a WiFi network at home with various devices connected which is reasonably reliable and gets me transfer speeds of about 4.5 MB/sec. However I often need to transfer several multi-gig files ...
3
votes
3answers
4k views

How to make a Gigabit Ethernet crossover cable?

Nowadays, I usually make EIA/TIA-568A crossover cables for Fast Ethernet(10/100 Mbps) networks. On these cables, just 2 of the 4 wire pairs are used to comunications(the 2 remaining could be used for ...
1
vote
3answers
647 views

Can a gigabit switch's performance degrade over time?

I have this Netgear 5-port gigabit switch. You know, one of those rounded white models. Well, it worked well in combination with a Netgear DSL router for a few years. The network topology is ...
1
vote
2answers
501 views

Why doesn't my PC sync at gigabit ethernet speeds?

I have a mixture of fast ethernet (100Mbs) devices and gigabit devices. Despite that the PC is gigabit ethernet enabled, it syncs at 100Mbs only. However, my PC is syncing at gigabit ethernet speeds. ...
1
vote
2answers
1k views

AirPort Express with 802.11n and 10/100BASE-T Ethernet port

If 802.11n can operate at 300Mb/s, why does Apple equip the AirPort Express with a 10/100 ethernet port? Doesn't a 100Mb/s port effectively throttle the wireless to 100Mb/s? AirPort Express ...
1
vote
2answers
198 views

Is the physical speed with which a single bit travels through copper wire the same with 10Mbit and 10Gbit? [closed]

I was just wondering if a single bit travels with the same physical speed through the same type of wire of a 10 Mbit network as through a 10 Gbit network? As far as I know a single bit has the speed ...
5
votes
2answers
4k views

Should I enable jumbo frame size of 9000 bytes for my NICs?

Should I enable a jumbo frame size of 9000 bytes for my NICs if I am running a gigabit network? Will it increase performance? For this scenario: PC to router to PC, on a gigabit network.
4
votes
2answers
3k views

What can cause auto-negotiation to fail on network?

Imagine you have both computer with a NIC that do gigabit with a router that do gigabit. What can cause auto-negotiation to fail on network ? (with proof if possible)
5
votes
3answers
8k views

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 ...
6
votes
1answer
10k views

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 ...
3
votes
1answer
4k views

Can you mix gigabit and 10/100 ethernet on the same network?

I have an Apple Airport Extreme Gigabit router and some new machines I need to put on my network (PS3, Mrs' laptop etc.) but the router has only got four ports so I was thinking of getting a simple, ...
2
votes
2answers
644 views

Network Drive Via Ethernet Port for Speed?

I have a Macbook with Firewire 400 and USB 2.0, so the only way I can get fast external storage is through the Ethernet port. A really fast firewire 800 drive on ANOTHER computer is actually much ...
0
votes
3answers
387 views

Gigabit Ethernet wiring

I currently have a wired 100 mbps network in my house. The wiring runs around in every room. I was thinking of upgrading to a gigabit network, since most of my comouters and router have gigabit ports. ...
3
votes
3answers
8k views

Does Ethernet cable affect speed?

I'm only getting 10 Mbps on my Ethernet connection but the NIC supports up to 100 Mbps. Could the Ethernet cable be the culprit? What labels on the Ethernet cable should I look for to make sure it's ...
0
votes
1answer
1k views

Which gigabit NICs are supported by Ubuntu out of the box?

I have an issue with my rtl8169 gigabit NIC. Which gigabit NICs are supported out of the box by Ubuntu lucid?
0
votes
2answers
242 views

Software or hardware issue?

I'm having a strange problem on my mac pro (first 8-core) where my network speed is dreadfully slow when connected with Ethernet. Internet connections are about 10% of maximum speed and computer to ...
2
votes
5answers
3k views

why are local file transfers slower than 1Gbps /100Mbps

I have 2 computers both with 1Gbps ethernet cars (PCI) and are connected to a 1Gbps capable Switch with Cat 5e ethernet cable. Why are file transfers so much slower than 100Mbps let alone 1Gbps. (note ...
0
votes
1answer
440 views

Connecting multiple low brandwidth devices into one Ethernet switch port

I have added several new computers to a home network and I run out of free ports a gigabit-in switch... Two of the connected devices are printers and run just ocasinally. I would like to have all ...
1
vote
3answers
1k views

Ethernet data transfer rates

I have a simple computer networking question. Gigabit connection, both computers have 500GB 7200rpm hard drives. One is core i7 860, and the other is Core 2 Duo 2.66Ghz. Both pretty fast computers. ...
4
votes
2answers
3k views

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?
12
votes
10answers
22k views

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 ...