Revisiting IPerf Testing on the Mikrotik CRS504-4XQ-IN 100GbE Network Switch

[@HomeSysAdmin]

Please let me know what you guys think of the switch and testing! CRS504 Switch... amzn.to/3Xt0Ean (Amazon) CRS504 Switch... ebay.us/RvWmxb (Ebay) (affiliate links)

[@korishan]

You're getting a lot better at making these videos. Another job well done, sir. Keep up the good work. I notice you're already at about 2k subs, nicely done! 😎😁

[@HomeSysAdmin]

Thanks! 🙂

[@edwynstapel3033]

Great Video! Found it very much interesting, especially how you explain your setup and what command's you used

[@shephusted2714]

first review on this item on youtube - congrats - this is not unobtanium for smb - it is probably the most sensible upgrade they could make - good roi if you value fast in house compute and time management - how fast does this go in real world - matches up well with nvme raid...please do more followups as you start using it a bunch

[@loucinci3922]

Pretty cool. Nice benchmark. Thanks for sharing

[@koalablast6043]

Another excellent video. Keep it up!

[@chriscappuccio]

mikrotik tests with some IXIA or similar boxes and puts the results on their site, including packet per second count at various packet sizes you can pass -w1m or whatever size TCP window you want to iperf and it will transmit with a larger TCP window which will lower the need for parallel threads to max out the capacity

[@paul.phillips]

100Gb is insane for a home lab. I'm excited to be upgrading our core routing and switching in the data center to 40Gb, though many data centers are deploying 400Gb links nowadays.

[@0bsmith0]

100Gb is a bit much, but 25Gbps is not and you can break out to a decent amount of ports with this switch.

[@itsnebulous8507]

This is all well and good, but where is the switching capacity on the datasheet? You're only testing a single port but I'm interested in the entire backplane capacity of the switch. It has 4 ports of 400g so the backplane should support 400g line rate being that it's a switch.

[@HomeSysAdmin]

Mikrotik has some detailed testing done at various frame sizes, which can be found here mikrotik.com/product/crs504_4xq_in#fndtn-testresults

[@LampJustin]

Awesome switch! ^^ Would you be able to do a routing (BGP preferably) test? I'd love to use it as a spine, but haven't seen anyone do it. But be sure to offload the routes to the switch dataplane so that it won't kill the CPU : P

[@ArnaldoMelo]

Try with -Z in the client, I got 94gbit/s with that.

[@devplayer0]

Just discovered your channel after picking up a pair of ConnectX-4s. Good stuff! Considering picking up this MikroTik switch next, but I heard it's missing the necessary L2 and L3 congestion control features for RoCEv1 and v2 respectively. But I also heard that with RoCEv2, it might be OK anyway. I'm just getting into RDMA stuff, any chance you could give it a try through the switch and let us know your results? Thanks!

[@HomeSysAdmin]

Hi. It's a new channel, spin off of my other @LithiumSolar. Unfortunately, I've sold the switch already as I didn't plan on doing any further testing.

[@Mr-Locke]

Enjoying the content, what would be the difference in real use for your application versus the performance testing with Iperf?

[@wiredhot1965]

I have one of these switches... How with my recent upgrade to fiber internet, I can get the full 500 gbe upload speeds thru it.

[@HomeSysAdmin]

This is a 100Gb switch, not 500Gb. Also, not sure where you would get 500Gb internet service, is that a typo?

[@dabb11]

Hi good video, do you mind doing iperf tests using this as a layer 3 switch specifically using NAT? The 98DX4310 ASIC in this switch should be able to do linerate routing but I do not think that NAT is programmed into this ASICS pipeline so it is reprocessing packets or punting them entirely I am very curious to see the performance hit for this specific box.

[@stankobulanov8428]

why don't use qsfp28 fiber? there are some really cheap 100gb modules out there :) single mode fiber cable is also pennies...

[@HomeSysAdmin]

The fiber is cheap. It's the transceivers that are expensive...

[@stankobulanov8428]

@@HomeSysAdmin i bought two 100g qsfp28 modules (CWDM4) for 28 euro each with delivery (in EU) :)

[@0bsmith0]

@@stankobulanov8428 That's not typical for items that are brand new.

[@jeverett0902]

Man, I thought iperf3 would be one iperf better than iperf2 - but obviously, iperf2 kicks iperf3’s ass.

[@clarencewiles963]

Are you saying that a squirrel sometimes finds a nut 🥜