How to see which switching methods a switch uses?

With methods I mean the following:
Store and Forward
Cut and Through
Fragment Free

Is there a command to see what is being used on a Cisco Switch, or is one of the methods the preferred methods and thus always used these day?

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Comments

joetest

Switches only use store and forward these days because of ASICs. The Asics today is so fast it's not worth the trouble of Cut-through or Fragment-Free.

d4nz1g

Some switches are also implementing cut through switching, such as the Nexus 5k.

I think that you should always refer to the datasheet of the specific device you are dealing with.

joetest

d4nz1g wrote: »

Some switches are also implementing cut through switching, such as the Nexus 5k. I think that you should always refer to the datasheet of the specific device you are dealing with.

I stand corrected - it's used on a few switches like the N5k. (useful for 9K bytes) Great info about it on Cut-Through and Store-and-Forward Ethernet Switching for Low-Latency Environments - Cisco

FrankGuthrie

But is there a way on a switch to see which method it uses, so is there a command to check?

d4nz1g

I don't know how to check it from the CLI. Looking forward to see if anyone would know that.

FrankGuthrie

Haven't found a satisfactory answer yet. I'll let you know if I find one.