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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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Debian Dmesg Error - What does this output mean regarding an outage on eth1?

The tale of the NIC that quit; I have chucked the end of dmesg output from a server into pastebin; This server (PowerEdge 1850) has two NICs, eth0 and eth1. eth1 has a couple of VLANs defined on it, and those in turn are in different bridges, one…
jwbensley
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What is a reasonable latency time for mpdringtest with gigabit ethernet?

Hi I have a small test network that I'm using to do some number crunching for my dissertation. My network consists of three machines with intel gigabit network cards (all em drivers with two hosts setup as laggs) with default MTU settings etc...…
Jonathan Lisic
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How do I calculate the ethernet NIC-to-NIC time to send a MTU packet (1500 bytes)? (OS-excluded)

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 machines are in the same room, not across the country…
chrisapotek
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PCI Extender and 1GB Ethernet Performance

One of my server has 2 PCI slots which has already plugged with 1GB Ethernet cards. I want to add two more 1GB NIC to this server. I've found on ebay this pci extender. I want to ask, because I didn't use PCI Extender before. Does PCI extender cause…
oruchreis
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Recommend a nice managed Top Of Rack switch for Linux Computer Cluster (but it has to be cheap!)

I work at an industrial research lab, and we have a research group that's building up a Linux-based compute cluster. The have about 46 nodes so far, with more to come. They came to us a few months ago looking for a suggestion for a 48-port managed…
Will Dennis
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Web server to DB server connection speed

we are designing a cluster of 2xnginx, 2xapache, 2xmemcache, 2xmysql servers for a high traffic web site. Current web site runs on 1 dedicated web server and 1 dedicated db server. the current web server sees a peak of ~60Mbps incoming traffic and…
webgr
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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 than internet connectivity is speed between…
stormdrain
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How to maximise performance in computers connected into LAN via Gigabit ethernet router?

Our group is setting up a server (which might just be a NAS, but we're not sure yet), which shares files, so that it connects to all other computers in the room (about 10 of them). I am thinking just hooking all of them up via a gigabit…
hpy
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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 are in the ~$500 range which is the most I can…
AX1
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Cat6e Lan Ethernet Cable - Disconnect when shake in Gigabit Mode. But it is stable when shake in Megabit mode

I have some problem in network connection. When I shake the lan cable at the wall jack, the connect will disconnect sometimes if the network is running in 1Gbps. But when it ran in 100mpbs, there is no problem in the stability. The network…
steff chi
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SSHFS performance tanks, why?

I have two Ubuntu 22.10 computers connected one to another via SSHFS. When I copy small files there is no problem but... once I start copying several gigabytes of data at a time, the performance sinks to zero for more than half the time. See…
ArekBulski
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Can you connect two PC ports with different subnets to one unmanaged switch?

We're in the process of designing a machine with a Windows PC inside its electrical cabinet (a Beckhoff IPC like this one). Among other things, there will be some GigEVision cameras connected to that PC. (GigEVision is basically UDP with maybe some…
relatively_random
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Will devices with different auto negotiation settings on switch ports with matching auto negotiation settings communication issues between them?

I ran across this idea today and had conflicting opinions on this from various co-workers. I am trying to understand if the communicating devices' auto negotiation settings need to match each other when communicating over a switch which has the…
Paj
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Video streaming via UDP on gigabit ethernet = packet lost

We are observing a strange behavior on a video streaming application over UDP on the same LAN. The sender send an H264 video via UDP through ethernet configured as 1000BaseT-FD, the receiver receive the video through the ethernet cable in…
gib
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Traffic cost calculation data center?

Let's say I have a software technology (new HTTP compression, new codec, ...) that can reduce network traffic by X%. I would now like to license / sell this technology to certain cloud providers. As part of that offering I'd like to estimate how…
left4bread
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