WTB: 10gig Switch

[T_Minus]

My WTB Thread:

PayMent: PayPal & Google Wallet - I will pay first to trusted sellers with feedback, I have some! I also may have some parts to trade too, let me know what you need/want.
FeedBack: Please provide trading history/ebay/heat.
Pricing: PM or POST your asking price, I don't guess.
Location: I'm in CALIFORNIA but unavailable for local pickup.

The List!

• 10gig switch - I'm looking for a used, affordable (wink, wink)
  It could have only 2 or 4 10g ports and the rest 1gig but ideally that would be 2-4x10g and 16-18 1Gig.
• 10gig NIC - Same as above, affordable 10gig NIC, possibly >1 depending on price or trading.

 

[whitey]

These are all over the place here in these forums $100-300, Quanta LB4M and Microtik CRS226 and the cheapest/most recommended ones sub $300 for 2 ports of 10G switching.

 

[T_Minus]

I should specify, I'm looking for at minimum of 4 10g Ethernet ports as I have 2 servers, and a workstation right now and plan to add 1 more in the near future. Is it easy/cheap to convert the SFP to ethernet? By the time you get 2 of the 2 port units for ~500 for another 300$ you can have 8 10gig ports with Amazon.com: Netgear ProSAFE Plus XS708E 10-Gigabit Ethernet Switch (XS708E-100NES): Computers & Accessories

Now, if the transceiver is cheap to go from SFP->Ethernet and the switches can be had for $100-300 like you say, and I can find some for <200 then that may still be the cheaper way to go for 4 ports...

 

[NetWise]

Ethernet is the protocol not the connection type. So you're not going from SFP to Ethernet - it's all Ethernet. You're changing media types from SFP+ to RJ45/copper. That $800 8 port one looks pretty decent, haven't seen one that low before that's probably the cheapest way you'll get into > 2-4 port 'uplink' solutions, I'd think.

 

[T_Minus]

Thanks for re-educating me I'll have to save my pennies to get that switch, but it's on the WISH LIST!!

 

[Chuckleb]

I haven't seen any SFP+ to 10baseT convertors anywhere. Doing it in a switch is the best way and the two choices that I see are the Netgear and ZyXEL which are the same price per port (~$110).

 

[PigLover]

You probably won't see any SFP+ to 10GbaseT either. There is a power issue. The drive current required for 10GbaseT is higher than the standard power spec'd for an SFP+ socket.

 

[Chuckleb]

I keep forgetting the G in 10GbaseT . Yep.

 

[whitey]

Yep, pwr/latency kill 10GbaseT in my book, gotta go DAC or SFP+ w/ SR optics and OM3 fibre. Take it from a guy who started down the 10G-BaseT path...ordered up 3x Intel 540-T2's...then realized the follies in my ways (pwr/latency/limited base-T 10G switch options out there w/ reputable/enterprise names/etc).

Sent them back, ate $200 re-stock, got 3x Intel x520-DA2's and DAC's/SFP+ and SR optics for one unique host/card I had arnd and all is calm on the home front.

 

[T_Minus]

So what's the deal with the 10gig power and latency you speak of? I haven't heard that from people who have 10gig?
Are you talking in reference to the switches or the actual Intel NICs you had too or both?

 

[T_Minus]

"When it comes to 10GBase-T, the PHY standard uses block encoding to transport data across the cable without errors. The block encoding requires a block of data to be read into the transmitter PHY, a mathematical function run on the data before the encoded data are sent over the link. The reverse happens on the receiver side. The standard specifies 2.6 microseconds for the transmit-receive pair, and the size of the block requires that latency to be less that 2 microseconds. SFP+ uses simplified electronics without encoding, and typical latency is around 300 nanoseconds (ns) per link."


Is what I found, for those who read this thread.

"The 10GBase-T delay becomes the same order of magnitude as Solid State Disk latency"

For a home setup that seems acceptable to me... and the power is still ~5w @ Full Load apparently, which is acceptable to me.

Now, if I was deploying 100 in a data center ya, I'd probably go the other way
Since I have 2 motherboards with 10g on them, I just need a switch, and 2 more 10g nics and my setup will be complete... well, for a while

 

[_Adrian_]

Start looking at the LB4 ( without the M - the M is dual SFP+ where as the standard LB4 is quad CX4 links on the back )

Also cards to look at are the Myricom network cards, they have single or dual port cards