Comment on Designing an Ethernet Switch ASICparentComments−inigyou1moIf you Google it, you find many copies of theory, but not a single reference to a cut-through switch ever existing in real life.−userbinator1moWhat "real life" are you living in? The references in https://en.wikipedia.org/wiki/Cut-through_switching already link to several. Here's a few more from all the major vendors.Cisco:https://www.cisco.com/c/en/us/td/docs/switches/datacenter/ne...HPE Aruba:https://arubanetworking.hpe.com/techdocs/AOS-CX/AOSCX-CLI-Ba...Fortinet:https://docs.fortinet.com/document/fortiswitch/7.2.7/adminis...Arista:https://arista.my.site.com/AristaCommunity/s/question/0D55w0...Nvidia/Mellanox:https://enterprise-support.nvidia.com/s/article/switch-forwa...Extreme Networks:https://documentation.extremenetworks.com/Switch%20Engine%20...−noncoml1moFrom Arista documentation:“Arista data planes support these packet forwarding modes: Store and forward: the switch accumulates entire packets before forwarding them. Cut through: the switch begins forwarding frames before their reception is complete.”−icedchai1moYou sure? There is one described here: https://en.wikipedia.org/wiki/Cut-through_switching (Kalpana switch from the early 90's)
Comments
If you Google it, you find many copies of theory, but not a single reference to a cut-through switch ever existing in real life.
What "real life" are you living in? The references in https://en.wikipedia.org/wiki/Cut-through_switching already link to several. Here's a few more from all the major vendors.
Cisco:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/ne...
HPE Aruba:
https://arubanetworking.hpe.com/techdocs/AOS-CX/AOSCX-CLI-Ba...
Fortinet:
https://docs.fortinet.com/document/fortiswitch/7.2.7/adminis...
Arista:
https://arista.my.site.com/AristaCommunity/s/question/0D55w0...
Nvidia/Mellanox:
https://enterprise-support.nvidia.com/s/article/switch-forwa...
Extreme Networks:
https://documentation.extremenetworks.com/Switch%20Engine%20...
From Arista documentation:
“Arista data planes support these packet forwarding modes: Store and forward: the switch accumulates entire packets before forwarding them. Cut through: the switch begins forwarding frames before their reception is complete.”
You sure? There is one described here: https://en.wikipedia.org/wiki/Cut-through_switching (Kalpana switch from the early 90's)