Questions about 100g networking

[boed]

Hello,

I'm trying to learn about 100g networking. I was thinking about making a direct connect fiber between network cards on different computers - no switch - just direct.

I found a fiber fanout that can go from one 100g to two 50g mtp/mpo connect -


I've never used anything over 10g RJ45 but want to play around a bit with transceivers and copper to really learn about it. Can a 100g transceiver such as this do 50g?
http://www.10gtek.com/AMQ28-SR4-M1-292.html#z2

I also don't know if you need different types of transceivers for 24 or 12 pin.

 

[mxnerd]

Why not use a lot cheaper 2 x Mellanox 40G Infiniband adapters on each machine and 2 cables to achieve 80GBbps using multi-channel SMB 3.0 that's built-in in Windows 8.1/10/2012/2016? (Well, I suppose it will work)

The question is whether your PC (CPU, motherboard and storage) can keep it up?

Also try Syncthing to do LAN syncing

 

[boed]

It is a valid question. I don't have a good reason for not doing a cheap 40g network. I'd like to test out what can be done with 100g as I've done a little with 40g but none on 100g. Part of it is for fun learning, part of it is for insane bandwidth I don't need but want for the sake of wanting, I do want to connect 4 machines to each other all of the data flows from 1 central server to 3 other servers. I'd like to avoid having a switch. I might be able to achieve everything if I can have 1 port on the nic going direct from the primary server to the secondary server at full speed and have the second nic go to a breakout cable going to the other two servers.

 

[mxnerd]

If you insist 100Gbps, discussion thread at Linus forum

https://linustechtips.com/main/topic/977440-transferring-files-at-100-gigabit-per-second-holy-ht/