Questions tagged [10gbase]

For questions about 10 Gbit BASE optics and transceivers for network devices. For instance, the copper-based 10GBASE-T or the optical-based 10GBASE-LR. There is a wide variety of optics.

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Is there a limit to the number of 10G copper SFP modules one can use in a switch?

I'm shopping for a new 10G ethernet switch for home, for copper ports. The majority have SFP ports and lack RJ45 ports for copper. I understand this provides flexibility but I only need UTP/Copper to ...
Criggie's user avatar
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Adapting 10GBaseT and NBaseT with a PoE Injector?

Suppose I have a device that supports 10/100/1000/10GBase-T ("Firewall") and another device that supports 10/100/1000/NBase-T ("Modem"). Now, I could connect these two devices ...
SEJPM's user avatar
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2 votes
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Support for 10GBase-T RJ45 SFP+ transceivers

Support for 10GBase-T RJ45 SFP+ transceivers in modern switches can be a hit and miss. What is the technical limitation as to why some switches don't support them? So far my understanding on the issue ...
GreenLantern22's user avatar
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10Gbase-T vs 10Gbase-TX

At 1 Gbit, 1000BaseT (4-pair UTP, Full duplex, IEEE 802.3ae) was supposedly different from 1000Base-TX (2 pair TIA/EIA 854), but at 10G, it seems that manufacturers are using 10Gbase-T and 10Gbase-TX ...
Jim Nunez's user avatar
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Slow internet throughput if servers are connected on 10G. But good when on 1G?

In our datacenter I'm having throughput issues if a server is connected on a 10G port on the switch. For debugging I already removed our router and asked our ISP for a small IP range that I can use ...
user419650's user avatar
1 vote
1 answer
900 views

Max cable length when using 10GBASE-T SFP+ transceiver

I find it typically said that the maximum Cat6a cable distance is 100m for 10GBASE-T. But often for a 10GBASE-T SFP+ transceiver, the product is said to support a maximum of 30m. For example: Cisco ...
Syncopated's user avatar
1 vote
1 answer
477 views

Can I use a 40G transceiver in a QSFP56 NIC to connect to a 10G transceiver/switch if the NIC supports 10G speeds?

We're purchasing new servers that have Mellanox ConnectX 6 network cards in them, which accept QSFP56 transceivers. The card says it supports 10/25/40/50/100/200G. However, our switching backbone is ...
dodexahedron's user avatar
2 votes
2 answers
773 views

SFP+ 10GBASE-LR and attenuator

This picture is a part of the Intel E10GSFPLR (SFP+, Long Reach) datasheet. Can I use them in a short link (less than 1 meter) without any attenuator? Which numbers are important in this datasheet to ...
A.A's user avatar
  • 551
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1 answer
193 views

Single mode, single strand fiber handles 1Gbit but not 10Gbit

I have a strand of dark fiber between two buildings, with the run being roughly 1.5 miles/2.4km, and it is currently operating with 1Gb BX 10km optics, but when I try to put in 10Gb BX 10km optics, I ...
Josh Eblin's user avatar
2 votes
2 answers
133 views

LC dual pair converter to 10GBASE-T

If using dual pair LC fiber to run 10GbE over a long distance, what's the best way to connect it to a server on one end which has a 10GBASE-T port? On the other end there's a switch with 10G SFP+ ...
g491's user avatar
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SFP 1000BaseT module for 1GB Uplink from Router

I have a Netgear 5 port 10G switch. It has (4) 10G RJ45 ports and (1) SFP+ port. I would like to use the SFP+ port to uplink to my router that is only 1GB. So am I right in that I can buy a "...
Matt Winer's user avatar
1 vote
1 answer
613 views

SFP to RJ45 for 10Gbit network

I am in the process of upgrading some of our network into 10Gb and grabbed the following: A network switch by netgear, mode:GS110EMX A bunch of assorted cat8 cables(for future proofing) Two 10gtek ...
Jono's user avatar
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2 votes
1 answer
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Reliable transfer but unreliable auto-negotiation?

I have two servers, the first with a built-in and add-on 10gbit port, and the second with built-in gbit and add-on 10gbit (Syba AQC107), communicating through a feed-through rated for gigabit ...
G. Hall's user avatar
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1 answer
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Extremely long time to establish network link with Nexus N9K-C9372-PX-E

This switch is completely default, no configuration has been done other than resetting it to default configuration, and going through the normal naming of the switch and time etc. The problem I'm ...
Kevin Vasko's user avatar
6 votes
1 answer
531 views

Why is there a separate set of 10 Gigabit fiber-optic transmission standards for WANs/SONET?

So, I'm reviewing the different IEEE transmission standards for an exam, and I've noticed that for the 10GBASE-X standards, there's two different sets of fiber-optic standards, 10GBASE-xW and 10GBASE-...
Xovvo's user avatar
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Fiber optic cable juniper ex4500

Noob 10G question. I have a juniper ex4500 10G switch and Qlogic 3242 10G card. I use twinax cables for servers within the rack and they work just fine. But, now we added a new office which has 2 ...
Bhargav's user avatar
1 vote
1 answer
351 views

10Gbe Network Setup, Freenas Backup and File Sharing

I have a small office network that has: ISP: 100Mbps up / 100Mbps down Firebox M200 (Firewall/Router) 8 x 1Gbe ports / 3.2Gbps Firewall throughput Cisco SG200 1Gbe Switch / 26 port *Planned 10Gbe ...
iheartmacs's user avatar
4 votes
1 answer
3k views

What is the Difference between SFP+ and XSFP?

What is the difference between these except the size of them. Both can support same Data rate and Same distance in different variants. What is the advantages and disadvantage of one of another. Like ...
Terminator's user avatar
11 votes
1 answer
6k views

Why does 10Gbps ethernet claim PAM16 encoding then use a squared DSQ128 constellation?

I've been looking into the way that 10 Gbps Ethernet encodes its data and I'm a little confused by the nomenclature. I have gathered, e.g. from here http://www.ikn.no/download/Whitepaper-10G-...
CharlieB's user avatar
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2 votes
3 answers
2k views

How does Ethernet driver know if the cable is plugged in?

How does the /sys/class/net/ethx/carrier field get set? I am trying to understand this field as it determines if a network cable is plugged in, but I am curious how it knows. This is specifically in ...
user_ABCD's user avatar
  • 624
1 vote
1 answer
856 views

Latency of AOC vs passive DAC

Long time ago I heard from friend that on really short distance using optical links makes no much sense because comparing to passive connection optical interfaces introduce another layer of hardware ...
Lapsio's user avatar
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1 answer
399 views

Intel x520 SFP+ connecting to a J9264A HP Procure 6600 switch

I have an Intel h2000 4 module (s2000WP mobi's) chassis with 2 port (Chipset 82599 x520 sfp+ card in each module. I was wanting to buy/use a J9264A HP 6600 procurve 24+4 that has 4 SFP+ 10GBE ports. ...
YipYip's user avatar
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3 votes
2 answers
298 views

Cisco catalyst 45xx series compatibility with RG45 10Gb

I'm looking for a compatible RG45 10Gb line card with Cisco catalyst WS-C4507R+E/WS-X45-SUP7-E Unfortunately I was unable to find any useful information in data sheets. Can anyone help me? I'm really ...
Hossein POURAKBAR's user avatar
1 vote
3 answers
170 views

What is your experience using 3rd-Party 10Gig Media Converters with Cisco equipment?

We have just received a device with 10Gig BaseT ports (for copper cable with RJ45 endings) that needs to be connected to a Cisco Nexus 5548. This switch only has SFP+ ports and we're connecting them ...
jcasiano's user avatar
2 votes
2 answers
343 views

Would 1000BASE-T clients see benefits if connected to a 10GBase-T server via a 10Gbe switch

We have a network of multiple client machine connected to a 24 port gigabit 1000Base-T switch in our office, which then connects to a local share server with another gigabit port One of our new local ...
Ben's user avatar
  • 123
1 vote
1 answer
999 views

How to verify that the connection is 10G? [closed]

I have 2 servers connected with 10G cable between them directly. I need to know that the connection is good and it has indeed 10G throughput. I used IPERF to verify the bandwidth. According to the ...
theateist's user avatar
  • 111
2 votes
2 answers
924 views

Router System Capacity Vs Packet Forwarding Capacity

When I read a spec document of Juniper Mx104 3D router, they mention 2 things. This router has 4 X 10GBE ports. 1.System capacity 80 gpbs 2.Packet forwarding capacity 55 to 60 Mpps Questions: What ...
user88975's user avatar
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1 answer
106 views

Hosts with both gigabit and 10GBE NICs

I have both a gigabit network (all Mac Pros, gigabit switch) and a 10gig network (subset of hosts using Sonnet Twin 10G adapters, 10BGbase-T switch). How do I get machine pairs where both have 10gig ...
Antoine Durr's user avatar
6 votes
6 answers
5k views

SFP+ transceiver's ability to do 1GbE

I understand that most ports that support SFP+ transceivers can step down to allow an SFP to be plugged into it, but my question is around the transceivers/optics themselves. Can an SFP+ transceiver ...
earnThis's user avatar
  • 125
9 votes
3 answers
459 views

10 Gb blade question

I am debating with a colleague about a potential configuration. We are implementing a new blade solution that has a built in 10 Gb switch and two blade servers, each having 4 10 Gb NICs. However, the ...
Ryan's user avatar
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7 votes
2 answers
51k views

Enabling flow control on my ethernet NIC

When running "ethtool eth0", I get a line in the output that states -> Supported pause frame use: No Does this mean my Ethernet card does not support flow control at all? I try to enable the flow ...
user_ABCD's user avatar
  • 624
1 vote
3 answers
12k views

Setting up Cisco TenGig ethernet SFP on ASR 1001-x

I'm having trouble with what should be a simple config setting up a 10GigE SFP on an ASR-1000-x. A fiber patch is connected to the SFP sitting in the TE0 port of the device. The interface reports ...
QuietFoundation's user avatar
2 votes
3 answers
3k views

Why is 10Gb SFP+ port showing 4.3Gbps Speed?

I have been trying to diagnoise this problem for a while (slow 10Gb connection). I thought it might be firmware or settings related(MTU). How ever while looking through some SNMP stuff I discovered ...
Levi's user avatar
  • 256
6 votes
3 answers
26k views

Do I need a 10GbE router to provide 10Gbps LAN speed?

We're planning on creating a 10GbE network for our office. I've got a list of hardware that all support 10GbE, only the router isn't 10GbE: Synology DS3612+ - 12 Drive NAS Intel X540-T1 - 10GbE ...
Tim Baas's user avatar
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8 votes
3 answers
2k views

Can 40GBASE-LR4 be used for 4x10G?

I have a 40GBASE-SR4 QSFP transceiver which can be used for 4x10G SFP+ communications using a 40G QSFP+ to 4x10G SFP+ multi-mode optical spliter. I am looking for an LR (single-mode) equivalent of ...
Randomblue's user avatar
3 votes
1 answer
5k views

No auto-negotiation for X520 with 10G direct attach cable?

I'm looking to use auto-negotiation and send Ethernet pause frames across a connection between an Intel X520 NIC and a Stratix IV FPGA using a 10G direct attach copper SFP. Ethtool is telling me that ...
James's user avatar
  • 31
13 votes
2 answers
11k views

10GBase-T vs. SFP+ Direct Attach

What are the advantages and disadvantages of using 10GBase-T vs. SFP+ Direct Attach to interconnect devices where distance is not a determining factor?
sardean's user avatar
  • 562
8 votes
3 answers
1k views

10Gig over single strand fiber

We have several BX SFPs in my network and I love them. We're limited on the amount of fiber we can get between buildings (each pair costs $250/month) so the mismatched laser solution gives us ...
Avery Abbott's user avatar
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8 votes
1 answer
500 views

Factors that determine compatibility of SFPs with new fibre services?

Whilst I understand that product recommendations are off topic can anyone help by explaining what the critical factors are when looking for SFPs that are going to be compatible with a new service? Is ...
MattE's user avatar
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