We have several CRS328 switches through our building that are connected via fiber optics. The switches are connected with 10gb SFP module.The switches are in bridge mode. No special configuration, no Firewall…, HW Offload is enabled.
The data transfer is very slow, it does not even reach 1gbps. Tested with RouterOS Bandwidth Test tool (crs328 <–10gb SFP–> crs328). I have attached a screenshot.
CPU increases to 90-100%
SFP module are also recognized correctly.
The latest stable version is installed. I have also tested the “long-term” version. Unfortunately without success.
HI!
The slow performance is because its using the CPU instead of the switch-chip.
The solution is you create one bridge and play with pvids/ tagged/ untagged.
Bandwidth test consumes awfully lots of CPU power on devices running it. Hence it should not be used on weak devices with fast interfaces such as CRS328. You really should use separate devices to generate traffic (e.g. fast machines running iperf) connected like this:
