What "real life" are you living in? The references in https://en.wikipedia.org/wiki/Cut-through_switching https://en.wikipedia.org/wiki/Cut-through_switching a

What "real life" are you living in? The references in https://en.wikipedia.org/wiki/Cut-through_switching 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/nexus9000/sw/92x/Layer-2_switching/configuration/guide/b-cisco-nexus-9000-nx-os-layer-2-switching-configuration-guide-92x/b-cisco-nexus-9000-nx-os-layer-2-switching-configuration-guide-92x_chapter_01000.pdf https://www.cisco.com/c/en/us/td/docs/switches/datacenter/ne... HPE Aruba: https://arubanetworking.hpe.com/techdocs/AOS-CX/AOSCX-CLI-Bank/cli_832x/Content/QoS_cmds/fwd-mod-cut-thru-sto-fwd.htm https://arubanetworking.hpe.com/techdocs/AOS-CX/AOSCX-CLI-Ba... Fortinet: https://docs.fortinet.com/document/fortiswitch/7.2.7/administration-guide/163700/cut-through-switching-mode https://docs.fortinet.com/document/fortiswitch/7.2.7/adminis... Arista: https://arista.my.site.com/AristaCommunity/s/question/0D55w0000AgETrhCQG/7050sx3-cutthrough-vs-storeandforward https://arista.my.site.com/AristaCommunity/s/question/0D55w0... Nvidia/Mellanox: https://enterprise-support.nvidia.com/s/article/switch-forwarding---160---store-and-forward--vs---cut-through-x https://enterprise-support.nvidia.com/s/article/switch-forwa... Extreme Networks: https://documentation.extremenetworks.com/Switch%20Engine%20v33.4.1%20User%20Guide/content/documents/Switch_Operating_Systems/Switch_Engine/User_Guide/default_switching_mode_1.shtml https://documentation.extremenetworks.com/Switch%20Engine%20...