All Questions
Tagged with 10gbethernet networking
43 questions
0
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0
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659
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how to test 10G NIC in loopback for full throughput?
I am using 10G NIC x520-DA2 (which is x8 Lane) in windows 10 Enterprise 64 Bit on DELL Optiplex 7080 Tower with Intel Core i7-10700 . X520-DA is installed on PCie slot 2 of optiplex 7080 that is PCIe ...
0
votes
1
answer
423
views
Use Core Switch as an L2 Access Switch
Can I use a CORE switch as an ACCESS Layer 2 switch?
The end goal is to connect all servers through at least a 10Gb network.
The servers each have high volumes of data that will be transferring back ...
2
votes
0
answers
863
views
Why can I get on <1G on my 10G Network?
I have 4 CentOS 7 boxes with SuperMico 10000BaseT NICs plugged into a Netgear ProSafe XS712T switch with Cat8 cables. Switch is all default settings, but shows NICs at 10G Full. NICs are configured:
...
- 141
1
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1
answer
658
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linux 10gbe ixgbe (intel X550T) slow at 420mbyte/s max, p2p lan cat8 1m, tried ethtool and ifconfig options to no avail
first time dealing with 10gbe.
I have two boxes, one is older with i7 2.8ghz from 2009 generation, pcie 2.0 and I just put the Intel X550T there to make use of absolutely similar but builtin adapter ...
- 41
1
vote
1
answer
469
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Can this router and motherboard connect via the LAN 10G Port?
So I am a bit confused :)
I have this unit, which advertises a "10G Lan SFP+" port
http://www.downloads.netgear.com/files/GDC/R9000/R9000_UM_EN.pdf
And I am thinking of buying this motherboard
...
user557271
0
votes
2
answers
730
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Windows Server 2016 Installation doesn't found Network adpter (Hard Drive Found!)
I have a just bought PowerEdge T640 server and i am trying to install Windows Server 2016 Standard.
I have downloaded the Windows Server 2016 ISO and mount a bootable pendrive using Rufus.
I boot the ...
- 141
0
votes
1
answer
724
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How is 10GBASE-T defined for providing compatibility?
Is there a common source for description (like for "data link layer" and might include electrical specification of "physical layer") of 10GBASE-T as standard for technical devices?
Considering ...
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-2
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1
answer
2k
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What transceiver can convert 10GBASE-KR or 10GBASE-KX4 to 10GBASE-T or 1000BASE-KX to 1GBASE-T? [closed]
A pci-e network card supports 1000BASE-KX, 10GBASE-KX4 and 10GBASE-KR on SFP connector, but the required mode for twisted pair support on RJ45 (8P8C connector) is 1G- or 10GBASE-T.
What type of ...
- 111
2
votes
3
answers
4k
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Why am I only achieving 2.5Gbps over a 10Gbe direct connection between 2 machines?
I have 2 machines directly connected to each other with a 7 foot Cat6a ethernet cable (included in the box of the NIC cards). The PCIe x4 NIC I bought and in both machines is this: https://www.amazon....
- 121
1
vote
1
answer
107
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What to expect from a 10Gbs fiber optic network of one server connected directly to 4 clients?
I have a fiber optic network of one server connected directly to 4 clients(they are not connected to each other)
The network is suppose to support up to 4x10Gbs, so 10Gbs throughput from each client ...
- 11
0
votes
1
answer
170
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What is a 4x 10gbe QSFP-QSFP cable?
I was looking for QSFP cables on Ebay and came across a Brocade 58-0000033-01 marked as 4x 10GE even though it has one QSFP connector on each end. I don't understand what this cable is for, will it ...
- 212
0
votes
0
answers
98
views
Using non-FUJITSU 10Gb Ethernet Cards in FUJITSU servers
We are currently trying to upgrade old servers to 10Gb connections. The servers in question are:
PRIMERGY RX200 S6
PRIMERGY RX300 S5
Our FUJITSU partner told us that there were no cards available by ...
- 101
1
vote
1
answer
203
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Network performance with an i7 6700 Skylake
We're looking into setting up multiple servers with Nginx; the estimated required capacity is 60 Gbps (six-zero gigabit per second)
A nearby datacenter offers us servers with "i7-6700 Quad-Core ...
- 134
2
votes
3
answers
140
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How many "joins" allowed for 10GbE copper?
I wonder how many "jacks" are allowed for running copper (Cat6a and Cat7) link for 10GbE connections.
Questions is pretty simple but I am confused about "link segment" term. From specification it ...
2
votes
1
answer
2k
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Mellanox connectX-2 - compatibility
We want to upgrade our network to 10Gbits.
On eBay you find a lot of old HP Mellanox connectX-2 SFP+ cards which are capable of 10Gbit/s.
We want to give our server one of them and connect it to a HPE ...
- 165
0
votes
4
answers
4k
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SFP+ to 10GbE RJ45
We have Intel x520 10Gb SFP+ network adapter.
We have RJ45 network cables to connect to a 10GbE network.
We have looked into direct attach cables and transceivers but we are struggling to find a ...
- 111
1
vote
1
answer
3k
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Is it possible to have a link between a 10GbE NIC and 1GbE Switch with a SFP+ DAC?
I've just installed an Intel 82599 based NIC with 2 SFP+ ports in my server. Right now I have a PowerConnect 2824 switch, which has 2 1Gb SFP ports.
I tried linking them with a 10Gb SFP+ DAC (a ...
- 193
-1
votes
1
answer
602
views
Intel 82599EB Not Working on Linux
I have just received my new X310 + Intel 82599EB. I cannot ping the device.
If I connect the X310 to the 1Gb ethernet port of my host then everything works fine;
If I connect the X310 to the 10Gb ...
- 111
3
votes
1
answer
462
views
What would cause a single protocol to function at 1Gbps over a 10Gbps connection?
Our AFP server is now capping out at 1Gbps over our 10Gbps fiber connection. And only in the client<-server direction (client reading from it).
This is a new occurrence. For years now the clients ...
- 93
3
votes
0
answers
3k
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Are the i40e and ixgbe drivers really used by our Intel NICs?
We recently got two QCT 2U4Node high-density servers. Each node is equipped with a XL710 dual 40G NIC with two QSPF+ ports and two QCT mezz cards that sport Intel 82599 and dual 10G SPF+ ports for a ...
- 183
1
vote
1
answer
2k
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10GBASE-T Performance in Windows 7
This is my scenario:
-Workstation1: CPU i7-3770 / 16GB ram / Gigabyte Z77-D3H motherboard / Crucial CT256MX100SSD1 Sysyem Disk / Network adapter intel X540-T1 / Windows 7 64bit
-Workstation2: CPU i7-...
- 73
3
votes
1
answer
837
views
Whitebox firewall in datacenter environment
I am looking into alternatives to commercial firewall appliances.
Most of the resources available online describe home network firewalls or sub-gigabit networks. Considering than 10GbE is becoming the ...
- 183
0
votes
1
answer
3k
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Network issues vmware Dell R620 10Gbit
I'm trying to get two new Dell R620 servers up and running on 10Gbit interfaces.
The servers were delivered with two PCI network-cards for 10Gbit.
At the moment, the network cards installed and ...
- 862
0
votes
1
answer
581
views
How much throughput increase to expect from link aggregation (LACP/802.3ad)?
I identified that data transfer within my cluster will be bottlenecked by the network interconnect (I'm saturating the dual SAS connection to my storage with sequential workloads), and I'm undecided ...
- 399
2
votes
1
answer
337
views
Storage Network Stops Transmitting Traffic
I have a troublesome issue.
I have a 10Gb storage network serving a VMWare vSphere 5.1 environment.
Storage: TrueNAS(NFS) with a Chelseio T320 10Gb Nic
Storage: Dell PowerVault MD3600i(iSCSI)
...
- 21
5
votes
1
answer
5k
views
SFP+ vs CAT6a for 10GbE
We are looking to implement 10Gig ethernet for our ESX hosts and SANs. There are a number of solutions we have been looking at and it has really boiled down to what will give us the best bandwidth.
...
- 669
1
vote
2
answers
2k
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Ubuntu 12.04 Server - eth0 1Gbps NIC eth1 10Gbps NIC - all traffic using eth0?
UPDATE: (per request below)
serveradmin@FILESERVER:~$ cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 FILESERVER
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-...
- 83
17
votes
4
answers
40k
views
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)...
- 181
12
votes
1
answer
3k
views
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 ...
- 39.9k
3
votes
0
answers
13k
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ksoftirqd process overloads CPU with high-bandwidth and multiple network connections
I got a 10GBit Server with proxmox 2.1
installed. There's an OpenVZ container running with Ubuntu
10.04 64bit.
I can get 200-300MB/sec with wget from data-center internal servers (-O
/dev/null) which ...
- 2,250
5
votes
1
answer
3k
views
Very low throughput on 10GbE network
I have two Linux machines, each equipped with a Solarflare SFN5122F 10GbE NIC. The two NICs are connected together with an SFP+ Direct Attach cable.
I am using netperf to measure TCP throughput ...
- 689
3
votes
2
answers
48k
views
What is the command to enable 3rd party SFP+ transceivers on Arista switch?
Does anyone know the command that enables the usage of 3rd party SFP+ on an Arista 7148S switch?
- 1,002
0
votes
1
answer
928
views
Intel® Ethernet X520 10 Gigabit Dual Port -x/k Mezzanine Card
what are the backplane connectivity options for this card?
though it is said for blades, we got this on a Dell PE C2100 rack...now there are two holes (ports) on servers backplane gazing at me......
- 1,285
1
vote
4
answers
1k
views
Must I install SFP+ transceivers in pairs?
I'm expanding the switch in our rack to a 10 GbE fiber internet feed. Specifically:
we have an HP 2910al
will expand the switch with a J9008A 2-port 10GbE SFP+ module
will plug in 1 (2?) J9150A ...
- 3,379
4
votes
1
answer
4k
views
10 GigE interfaces limits single connection throughput to 1 Gb on a ProCurve 4208vl
The setup is as follow : 3 Linux servers with Intel CX4 10 GigE controllers and an X-Serve with a Myricom 10 GigE CX4 controller are connected to a ProCurve 4208vl switch, with a myriad of other ...
- 7,116
2
votes
3
answers
7k
views
Basic multicast network performance problems
I've been using mpong from 29west's mtools package to get some basic idea of multicast latency across various Cisco switches: 1Gb 2960G, 10Gb 4900M and 10Gb Nexus N5548P. The 1Gb is just for ...
- 61
0
votes
2
answers
1k
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is it possible to direct connect a client and server with 10GBASE CX4 copper cables?
Server has two 10GBASE-CX4 ports.
client has 10GBASE CX4 HBA.
can theybe directly connected with a CX4 cable without the need for a switch? like SAS Infiband connectors?
- 1,285
1
vote
1
answer
230
views
hybrid cable for QSFP to CX4 convertion
here is a hybrid cable for QSFP to CX4. Will this fit SFP+ ports? Deeply confused by standards and struck in a situation with wrong hardware selection!Personally have not seen the ports/hardware and ...
- 1,285
0
votes
2
answers
4k
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which 10Gb switch has native CX4 copper ports?
networking experts please help with a recommendation for a 10Gb switch that has at least 3 native CX4 copper ports and preferably some 10GBASE-T.
rack mount only!
anything in CISCO? Juniper?
We ...
- 1,285
5
votes
2
answers
7k
views
please demystify the 10Gb ethernet interfaces, cables
this really is a Dell question but tempted to ask the experts @ serverfault.
choosen a Dell powerconnect 8024 10GbE switch. per the spec sheet this has 10GbaseT ports.
"24x 10GBASE-T (10Gb/1Gb/100Mb)...
- 1,285
0
votes
4
answers
8k
views
Choosing 10GbE switch: 10Gb uplink module on 1GbE switch means it can act at 10Gb bandwidth?
confused between choosing a switch with 10Gb ports vs 1Gb layer3 switch which has optional 10Gb uplink port. are they same?
that means I want to have a 10Gb pipe between storage server and the two ...
- 1,285
1
vote
5
answers
10k
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NIC status stays at 'Network Cable Unplugged' although cable is present
I'm having a problem with a couple 10GB NICs, one in particular in Windows 7 x64 that always thinks the cable is missing.
The drivers for the NIC are current, downloaded from Intel- it's settings are ...
- 468
0
votes
1
answer
330
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Adding 10GbE to a ring of 3com 4200 switches
We have 5 3com 4200 switches forming a ring (connected using 10GBase-CX4 XENPAK modules) and would like to add a few servers with 10GbE adapters soon.
The offer we are currently looking at consists ...
- 125