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Questions tagged [sfp]

Small form-factor pluggables are mostly optical, modular transceivers for gigabit or 10 gigabit (SFP+) network connections.

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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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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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How compatible are SFPs really?

How compatible are sfp modules between devices. For example, am I likely to be able to plug something like this into a cisco, hp, or other switch with mini gbic ports?
Joel Coel
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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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Mixing SFP's with different speeds

I need to install new SFP's in a location; however, I need them to connect to existing switches and I'm not sure what SFP type they are. All I know is I've got MM Fiber. If I installed Cisco GLC-SX-MM 1000Base SFP's, would that cause an issue if…
Ryan
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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. One solution was to run Intel X540-T2 cards with…
Myles Gray
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Do 10GbE SFP transceivers need to match?

I'm looking to connect a Promise SanLink 10GbE SFP NIC to a Cisco 10GbE switch. My general question is whether the transceivers need to match. In other words, do I need to find a transceiver which is both compatible with the Cisco switch and the…
Cornelius Qualley
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100BASE-FX WDM vs 100BASE-BX vs 100BASE-BX10 - Are they all the same?

Are these three all the same thing being inconsistently named by different manufacturers? 100BASE-FX WDM uses separate wavelengths (1310 nm & 1550 nm) for Tx & Rx over a single strand of fiber. I cannot find any documentation for 100BASE-FX that…
Monstieur
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What type of Fiber-Connector is this?

I have four of the below connections on site and need to bring them alive, yet my googling and wikipedia does not clearly show my which type of connector I have. I assume this to be a duplex LC connector, yet the picture seems to show a different…
Christian
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Do Netgear switches accept other brands of SFP+ modules and cables (e. g. Cisco)?

Specifically, I'm looking to connect servers with Intel X520-DA1 10 Gigabit Ethernet cards to the 10Gbe ports of a Netgear ProSafe GS752TXS. Can I use Cisco SFP+ cables (SFP-H10GB-CU5M) and optical modules (SFP-10G-SR) with the Netgear? All I can…
ferebee
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How do fiber Ethernet transmitters set their power output?

I've noticed that fiber-optic SFP modules from Cisco and the like often specify a range of power outputs, such as -3 to -9 dBm. What determines the actual power output we should expect to see from such modules? Is it determined dynamically, or…
John Zwinck
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How do I get past "SFP Validation Failed" on a SFP-GE-T transceiver on a Nexus 5548UP?

I inserted a SFP-GE-T (Gigabit RJ-45) transceiver in my Nexus 5548UP and I got "access down" "SFP Validation Failed" in show interface. According to the Cisco Gigabit Ethernet Transceivers Compability Matrix the SFP-GE-T is compatible with the…
Alain O'Dea
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How do I connect 100BASE-T (iDRAC6) hosts into a Nexus 2232PP via SFP+?

I have a dilemma. I want to have an end-to-end 10 Gigabit Ethernet network over SFP+, but my Dell servers have iDRAC6 which only works on 10/100BASE-T. The closest thing I could find was the GLC-T transceiver but that only does 1000BASE-T and won't…
Alain O'Dea
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Plug 10GbE appliance into the SFP+ port of a switch on a 1GbE network

Is this possible? Our setup: Core switching: Catalyst 2960-X 48 x 1GbE RJ-45 ports 2 x 10GbE SFP+ Uplinks between switches are RJ-45. We plan to get rid of these and use a 10G switch for switch-to-switch uplinks in the near future. Appliance:…
Brendan Lovett
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Compatibility of QSFP28 and SFP+ ports

Question Can I connect a 25Gbps QSFP28 port to a 10Gbps SFP+ port using either fiber or copper? Background I'm building out a network with some high speed interconnects coupled to a slower gigabit network. On the high speed side, I plan to have…
Whimsical Seaplane
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