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Questions tagged [10gbethernet]

10 gigabit per second version of Ethernet protocol, using either copper or fiber cables

10 gigabit Ethernet is one of the newer standards in the Ethernet family. Its standard had been established in 2002 for fiber communication and 2006 for copper cable communication. It allows for transfer rates in around 1.1GiB/s. Other names include 10GbE, 10GigE and 10GE

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What is the clock frequency inside 10Gb and 100Gb Ethernet cards?

As I understand, a 10Gb Ethernet card is capable of putting 10Gb every second on (say) a fibre optics cable. Now naively, for this to happen in hardware, one will need a 10GHz clock running the network card. It is possible to half that frequency by…
Randomblue
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Why would I choose Copper over SFP+ for 10GbE?

We're speccing up some 10GbE switches for integrating a few older servers into our Equallogic SAN, and we're noticing quite a price gap between SFP+ and Copper (Cat 6A) equipment (Dell 8024F vs 8024). I'm not really sure what the real-world…
Mark Henderson
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10GbE sfp+ cross over cable required? Is there such a thing?

To preface, this is my first experience with 10GbE networking and I have encountered an issue which my research does not seem to locate a solution for... I have two servers (older DL580G5 and DL380G5), each with a HP NC522SFP, 10GbE dual sfp+ port…
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what's the difference between Gigabit Ethernet Controller and Ethernet Converged Network Adapter?

My question is what's is the difference between Gigabit Ethernet Controller and Ethernet Converged Network Adapter? I want to upgrade my server to 10 Gigabit ethernet, my server vendor recommend me one card but it's very expensive and there are…
reza azimi
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10/20/40Gbps nginx large files caching webserver [20Gbps reached]

I would like to find out the best possible configuration/hardware to deliver 40Gbps from a single server in this question. Situation We have a video share proxy server that offloads peaks from slow storage servers behind it. All traffic is HTTP…
Yarik Dot
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How does BER compare between different 10GbE physical media?

I am under the impression that you should use optical for 10GbE networking because of a BER (bit error rate) several orders of magnitude lower than copper. I'm pretty sure I previously found documentation stating so, but for the life of me I just…
MikeyB
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What is serialisation delay? Why does 10GB Ethernet help reduce it?

In the context of a network switch, what exactly is "serialisation delay"? (I've heard this term a few times.) I've also heard that 10Gb Ethernet (as opposed to 1Gb Ethernet) as a transport technology helps reduce serialisation delay even when the…
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how to tell if NIC has multiqueue enabled?

Can anyone tell me what command i run to determine if my 10G NIC is running in single RX-TX queue mode or multiqueue? It looks like it only has 1 RX/TX queue according to cat /proc/interrupts root@hostname:scripts]# cat /proc/interrupts | grep…
dobbs
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How to achieve multiple NFS/TCP connections to the same server?

I'm trying to maximize the NFS/TCP bandwidth between a Linux client and a single NFS server over a 10Gbps link. Although each NFS mount has its own device (major/minor), everything comes down to a single TCP connection and this is a…
Benoît
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Recommendations: configuring a 10GbE NAS stack for virtualisation storage

I'll try as hard as I can to word this so it is not considered a shopping list. We have been successfully running a dev/test ESXi environment for some time, with a couple of Dell PE2950III servers over an HP MSA2012fc Starter Kit (with the…
jimbobmcgee
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iSCSI using uplink ports on switch

Do the uplink ports on switches typically work okay as iSCSI ports? We're adding a 10gb iSCSI SAN, and want to get a combo switch (48x1gb & 4x10gb SFP+ uplink ports) and use the 10gb for the iSCSI SAN, while the 1gb are for a 1gb iSCSI SAN. We were…
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10GE network: Is it still deadly expensive? Any options?

I am building home cluster where I going to have about 16 nodes which can live with 1G ports, but I want to have 10GE on file server & central node. It's all local, so no need for cables longer than 3-5m. And of course I want to spend as little…
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Converter for RJ45 port to SFP+

2 of my servers have an Intel X552 network adapter that has 2x 10GbE RJ45 ports. All my other equipment is at least dual RJ45/SFP+. I'm looking at upgrading my core network to 10GbE and I'd like to use fibre cabling exclusively if possible. Is there…
sparkles
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Unstable 10Gb copper links, Broadcom and Intel cards to Cisco 4900M switches

We bought some Dell PowerEdge R730 servers with QLogic/Broadcom BCM57810 PCI Express cards, and connect them to Cisco 4900M switches - the 10Gb links don't work reliably. They will sometimes not connect, sometimes connect after a few minutes, and…
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New office cabling: should we use CAT7 or CAT6a?

We are going to do the cabling in our new office building and we are thinking to lay down 10Gbit cables since we use HP switches that come with 10Gbit ethernet ports. We will also lay down few fiber optic cables, just in case :). What we are…
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