The device i currently use is a S4810P (OS 9.14(1.2)), and the possible future device would be a S5048-ON or S5248-ON, then with the latest and greatest release.
So far i lived in the perception c-t is a sort of default mode, switched on in the ASIC, and there is no need to configure it, because the ASIC is taking care of it.
But then i found that some other OSes provide a configuration option for controlling it...
I also wonder in general, whether technical progress may have shifted the situation the cut-through mode is designed to tackle, and how that would affect it's configuration in specific use cases...
It's weired, because i'm quite shure i observed some configuration snippets for a S4810P in a troubleshoot discussion about a different issue on the forum, and it had a line similar to "no cut-through", and it mattered in that discussion.
But i can't track it down anymore.
It left me with the idea it can at least be deactivated.
I'm interested in it because i don't exactly know how the ASIC would deal with situations where congestions or underruns (e.g. due to application behaviour) or other imperfections in the network occur: would the ASIC switch to store-and-forward altogether? And would that happen in a fashion that the latency values effectively stay predictible?
DELL-Josh Cr
Moderator
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September 16th, 2019 09:00
Hi,
Which model switch are you trying to configure? Which OS version are you using?
HifDelCo
1 Rookie
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43 Posts
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September 17th, 2019 10:00
Hello Josh,
thank you for willing to help!
The device i currently use is a S4810P (OS 9.14(1.2)), and the possible future device would be a S5048-ON or S5248-ON, then with the latest and greatest release.
So far i lived in the perception c-t is a sort of default mode, switched on in the ASIC, and there is no need to configure it, because the ASIC is taking care of it.
But then i found that some other OSes provide a configuration option for controlling it...
I also wonder in general, whether technical progress may have shifted the situation the cut-through mode is designed to tackle, and how that would affect it's configuration in specific use cases...
Best regards,
H
DELL-Josh Cr
Moderator
•
9.5K Posts
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September 18th, 2019 10:00
I do not see a way to configure it on these switch OSes. Some of the Z series switches and the S6100 have a custom OS version that supports it.
HifDelCo
1 Rookie
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43 Posts
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September 19th, 2019 01:00
Hello Josh,
It's weired, because i'm quite shure i observed some configuration snippets for a S4810P in a troubleshoot discussion about a different issue on the forum, and it had a line similar to "no cut-through", and it mattered in that discussion.
But i can't track it down anymore.
It left me with the idea it can at least be deactivated.
I'm interested in it because i don't exactly know how the ASIC would deal with situations where congestions or underruns (e.g. due to application behaviour) or other imperfections in the network occur: would the ASIC switch to store-and-forward altogether? And would that happen in a fashion that the latency values effectively stay predictible?
Best,
H