DAC, Fiber, 1GB SFP, and 10GB SFP+ Cross Compatibility

Hey! I really liked this video! I was learning aobut the subject because I bought a UDM SE and a USW 24 PoE! I connected both devices using 2 RJ45 Transceivers (from ubiquiti) and a cat6 cable. The switch is not the pro version, so I used it's SFP port with the transceiver to connect it to the SFP+ port in the UDM SE. I'm only getting 30Mbs as a download speed when my full download speed is 300Mbs down and 30Mbs up. At the UDM SE and at any of it's ports I'm getting my full WAN download speed but not if I use any of the switch ports. That's not the case for the upload speed, I get the full upload speed both in the switch and UDM SE. I suspect the problem is in the conneciton between devices. Since the 2 ports are not SFP+ but rather SFP to SFP+, I did set the connection manually to be Gbe and not auto negotiation to avoid any problems. Still I don't know why my connection is being capped like that! Could you help me out? Thanks!

You mean to say that some 10GB models can only do 1GB, but not 2.5 or 5 GB

nice,
thanks from indonesia mister

clear as mud? at the beginning of the video you say they will work, then 3 mins in you say they wont? i want to connect a udm pro (10G) to a switch 24 poe (1G) using an OEM Ui 10G SFP+ cable, will it work?

I just found a 2.5GBASE-T SFP Transceiver Module that claims to use a regular SFP port and can run at 2.5g over 100m of Cat5e. Is that compatible with any non-vendor specific switch SFP port? I assumed that SFP was capped at 1gb but learned that it up to 4.5gb in some configurations. I'm trying to figure out if I can use these on my network switches SFP ports.

Good video

My x520 on my pfsense pc would not negotiate dac to my sfp mikrotik switch. I had to use fiber and it figured it out

seems like buying a switch with an sfp port and using fiber to connect your pc with it is a good idea

I'm in this boat, I have 2.5Gb fiber connected directly to my USW-Pro-24-PoE, then to pfsense over Gigabit Ethernet and back again. My issue is my upload speeds are stuck at 110Mb on wired clients. This is only strange because my wireless clients (u6-lr's) Ethernet backhauled to the same switch get approximately 300Mb/300mbit. So they're all wired! Why can my wireless clients get better upload than my wired machines? I've checked and swapped out cables, cards, used different pfsense interfaces.

If you have FTTH can you bypass Fiber ONT and direct to SFP port on switch and or firewall

Any examples of some recommended switches that can link at these in between speeds?

First

Question: What brand of Ethernet cable do you prefer? Thanks very much.

Very clear video, Tom.

By the way, why would one use those SFP+ to RJ45 converter modules? I've always been puzzled by those. Especially if we're talking within the same rack or closet, since passive 10G DAC cables are good for 7 - 10 meters if they wanted to stick with copper for some reason.

Why bother converting formats? Those modules just generate lots of heat and waste energy, and add latency.

I could see it if you had a long run of Cat6a coming into a closet, and needed to plug into an SFP+ port for some reason, but it would be better to just get gear with 10GBase-T RJ45 ports. For the short in-rack connections, I don't understand the point.

Any Hardware Option to install pfSense/maybe OPNSense on it which has 10GBit/s Ethernet already built-in? (at least 2 of them, or one and one sfp)

would like your take on tailscale/taildrop and how to set it up properly for VM's inside virtual clusters like in xcp-ng locally and remotely..and maybe top it off with a competing solution of ur choice.

compadre

Hey Tom,

I am looking for a mentor but when I check people's work experience on Linkedin or on their website I don't really know if it is fake or not,
how can I know if it is fake?
it's going for a month that I am stuck in this appreciate it if you answer me.

Ran into this issue in production yesterday... it’s as if the internet is laughing at me...

awesome, thx. been wondering about that for a while, especially for unifi switches and the DAC cables.

No problems with mikrotik sfp+ ports having a sfp module in it, using mikrotik mods anyway

Just picked up a Mikrotik and been watching the market to pick up some 10gb nics. Any cheap but reliable sources?

hm that explain to me why dac from ubiquiti doesnt work with ubiquiti switches when i have connected 10 with 1gb port. So i must set negotiation to manual - i'll try on monday ! Thx TOM !

Any One Know If The MikroTik 8 Port SFP+ Switch Will Work With My HP 10Gb & Mellanox 10Gb Nic's ?? I Have a Hp Dual port n my main Pc & Mellanox are in my 3 servers & Hp in another ? ? Just Trying To dot my t's & Cross the I's before I Drop 275$ on a The MikroTik Switch..I hope i can figure it out how to set up a p2p LAN Only with it !

There is a typo in the thumbnail, it says SPF+ instead of SFP+

Working in a Cisco shop some brands work better them others. Startech, tricentric both work with out extra commands.

Love the shirt!

👍👍👍

Love the MikroTik switches. They've been workhorses for my home lab.

How do you always make a video about something I was searching for 2 hours before? You're awesome.

Tom MikroTik is pronounced MicroTick like Microsoft

When we talk about SFP compatibility, it’s more about SFP vs SFP+ than it is 1G vs 10G. The difference is the amount of power the switch can provide to the module.

Thank you for the video....it will help clarify some of the confusion.

Thanks for the video, hope to soon get into 10G ethernet at home, though my internet is still at 1G.