27.03.2020 14:11, Per Jessen пишет:
Roger Oberholtzer wrote:
We are setting up a cluster of computers that will be connected via a 10 GB network.
The switch we are considering is something like https://www.netgear.com/business/products/switches/smart/XS748T.aspx
The sales blurb says:
Up to eight 10-Gigabit Ethernet links can be aggregated into a virtual 80‑Gbps connection
This is bandwidth, not speed. Each single flow between two systems is still limited to 10Gbps, but with some luck you may have multiple flows at the same time utilizing multiple physical links.
In openSUSE, would this be related to bonding slaves?
Yes. New kid on the block is team driver.
LACP is quite old, I wonder if Netgear is providing the hardware version, i.e. let the switch do the work? We have had network interface bonding in Linux for at least 10-12 years, also with LACP. We are using it, but I don't recall needing anything special in the switches. (I didn't do the setup).
Switches must support LACP and LACP must be configured in advance, and configuration must match between two partners otherwise no connection is possible. If available, LACP is preferable to static aggregation (etherchannel) because LACP actively probes each physical link and can detect problems beyond simple physical link failure. Linux also offers other bond modes that do not require special switch support/setup. Depending on exact requirements they may be sufficient for load distribution across multiple links.
The goal would be that one computer (primarily a file server type of thing) has a high bandwidth stream for reading and writing data to the switch, where numerous other computers read and write via their single cable. This server would have, say, 4 10 GBit Ethernet ports connected to the switch. Ideally these would appear to be a single network.
Yup, sounds about right - that is how our storage servers are connected to the switch. Only 4 x 1Gb though. I would also look at being able to feed such a network - i.e. make sure you have the IO devices with enough bandwidth too as well as sufficient bandwidth on the interconnect between IO devices and network device(s).
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