10Gbase-T transceivers that support DDM (power/temperature) reporting?

[victorhooi]

Hi,

Does anybody know what 10Gbase-T optics (transceivers) support any kind of DDM/DOM monitoring? I'm looking specifically at power/temperature metrics.

A lot of the ServeTheHome reviews of the 10Gbase-T adapters seem to have stats on power consumption in watts - however, if you check with say FS.com, they explicitly say that they don't support DDM/DOM on copper transceivers. Does anybody know what the story here is? (This review seems to suggest they were using some kind of multimeter - were they just measuring power at the wall?)

I did notice the Mikrotik S+RJ10 mentions it does support DDM reporting - however, is this the only one? What do you use to get temperature/power reporting on yours?

Thanks!

 

[i386]

I don't use sfp+ to 10gbase-t adapters so I can't give input on that topic

10Gbase-T optics

10gbase-t is the standard for 10gigabit/s ethernet over twisted pair copper cables (hence the "t" for twisted pair in the standard behind "base"). Copper and optics don't mix very well

DOM stands for digital optical monitoring, not applicable for twisted pair ethernet. it provides information for transmitter and receiver power, laser current, temperature and transceiver voltage (Digital Optical Monitoring - DOM)

 

[BoredSysadmin]

Optics over short distance 10gig ethernet called 10GBASE-SR

Cisco SFP-10G-SR Compatible 10GBASE-SR SFP+ Transceiver Module - FS.com

FS Cisco SFP-10G-SR compatible SFP+ optical transceiver supports up to 300/400m link lengths over OM3/OM4 MMF 850nm via an LC duplex connector.

www.fs.com

This one says DOM/DDM supported

 

[Tom5051]

I can confirm the SFP-10GSR-85 model works with Intel and Ubiquiti gear. OM3 LC/LC runs up to 65m no problems here. Have not tested longer runs but whatever they are rated to they should do no problems.

 

[victorhooi]

Thanks for the replies!

However, I'm looking specifically at copper transceivers if possible.

The Mikrotik S+RJ10 specifically mentions:

- DDM monitoring (Supply Voltage, Module temperature) is now supported.

Hence I'm wondering if anybody is aware of any other copper SFP+ transceivers that support reporting stuff like temperature, power consumption etc?

 

[lifemathematician]

The Fiber Mall 80m modules run cooler than S+RJ10 for me (50c vs 65c+) and also report temp/voltage/current on my Ubiquiti switch.

 

[victorhooi]

Oh - that's very helpful.

I can look into this - temporarily out of stock, but hopefully will come back soon.

Just curious - have you only tested the 80m version?

I've read elsewhere that 30m vs 80m - often the 30m use a lower-end/cheaper chipset (e.g. Marvell vs Broadcom) - curious if that explains the better efficiency/lower heat?

Hopefully those power/temperature metrics are accurate =).

 

[lifemathematician]

Just curious - have you only tested the 80m version?

I have only used the 80m Fiber Mall modules. For 30m I've tested Wiitek, Ipolex and the S+RJ10. The Wiitek and S+RJ10 reported temperature but the Ipolex did not.

If I had to buy more I would probably get the 80m ones for the lower power consumption, cooler temperatures (which is noticeable by touch too) and better tolerance for non-standard cabling. I'm running a pair of the 80m modules at 10gbit on 30ft of CAT5e with no errors or drops.