Saturday, December 21, 2019

10gbps interface, peak throughput only 1gbps

Hello, this may be an easy question for many people. We have an enterasys s series 10gbps interface connected to another enterasys switch (both with 10gbps single mode transceivers). These are connected via a 3km single mode fibre stretch. Both interfaces are up and it’s just a layer 2 link. Anyway, the server team have been complaining that their backups which exclusively go over this link have a low throughout. When monitoring the interface I noticed a lot of errors and the throughput on solarwinds was seeing was 400mbps. I swapped the fibres and the throughput is now 1.5gbps with no errors. Both ends of the link see it as a 10gbps link. If the backup servers etc can handle sending and receiving 10gb is there any reason the link is only being 10% utilised? Is this normal or expected? Even though the interfaces see it as a 10gbps link could it actual be less in real life?



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