4 ms·
Network Engineer here as well - I support one of the world's largest enterprise organizations (although my area of 'expertise' is pretty far down the stack - so
by deaps 8y ago
Network Engineer here as well - I support one of the world's largest enterprise organizations (although my area of 'expertise' is pretty far down the stack - somewhere between the internet and the WAN circuits) - I can see no personal use for a 400 GbE port on anything.
As far as my organization goes, there will always be a bottleneck somewhere else (speaking location to location across the WAN).
The only applications I could see this being useful would be maybe huge ISP interconnects or maybe some big players in the video streaming world. That doesn't mean that future-proofing is a bad thing - of course cost will probably be a very large concern in the case of 400GbE...I see a lot of 40 gig ports that go completely unused, personally.
- monocasa 8y agoIt's not hard to imagine 100GbE being used inside datacenters. AFAIK, 40GbE top of rack switch is pretty common.
- deaps 8y agoI've seen some 160GbE links in datacenters - 4x40's - how much they were actually utilized, I have no idea.
- walrus01 8y agoif you have a really beefy single bare metal hypervisor (typically xen or kvm) it's totally possible to give it 100GbE to the switch now: http://www.silicom-usa.com/pr/server-adapters/networking-adapters/100-gigabit-ethernet-networking-server-adapters/pe3100g2dqir_server_adapter/ http://www.silicom-usa.com/pr/server-adapters/networking-ada... I don't have anything this serious in my own production use, but I'm thinking of machines like dual socket x 32-core per socket xeons, or amd epyc, with 512GB to 1TB of RAM. then pass vlan tagged traffic off one switch port, to each specific guest VM, of which there might be dozens to 100+ VMs, as subinterfaces of that.
- walshemj 8y agoHPC Clusters would be one candidate
- jdabney 8y agoWe use 100 Gb EDR Infiniband to each host in our HPC clusters and with a combination of file system access, message passing, and general network traffic we actually use that bandwidth.