3 ms·

So he didn't want to google it?

by icedchai 3mo ago

stinkbeetle 3mo ago
I see you've never had a run-in with a blowhard in a position of power. Lucky.
- icedchai 3mo ago
  I've had it happen in an interview, many years ago. I told him we'd have to agree to disagree. After I was hired, he admitted he looked it up and I was correct (some weird SQL question he asked.)
  - noncoml 3mo ago
    “So he didn't want to google it?” No, he didn’t want interrupt the interview to start checking out phones. “I told him we'd have to agree to disagree.” That’s where I went wrong. But I like to think learned my lesson.
  - userbinator 3mo ago
    After I was hired, he admitted he looked it up and I was correct The best possible outcome.
inigyou 3mo ago
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.
- icedchai 3mo ago
  You sure? There is one described here: https://en.wikipedia.org/wiki/Cut-through_switching https://en.wikipedia.org/wiki/Cut-through_switching (Kalpana switch from the early 90's)
- noncoml 3mo ago
  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.”
- userbinator 3mo ago
  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...

So he didn't want to google it?

stinkbeetle 3mo ago

I see you've never had a run-in with a blowhard in a position of power. Lucky.

icedchai 3mo ago
I've had it happen in an interview, many years ago. I told him we'd have to agree to disagree. After I was hired, he admitted he looked it up and I was correct (some weird SQL question he asked.)
- noncoml 3mo ago
  “So he didn't want to google it?” No, he didn’t want interrupt the interview to start checking out phones. “I told him we'd have to agree to disagree.” That’s where I went wrong. But I like to think learned my lesson.
- userbinator 3mo ago
  After I was hired, he admitted he looked it up and I was correct The best possible outcome.

inigyou 3mo ago

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.

icedchai 3mo ago
You sure? There is one described here: https://en.wikipedia.org/wiki/Cut-through_switching https://en.wikipedia.org/wiki/Cut-through_switching (Kalpana switch from the early 90's)
noncoml 3mo ago
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.”
userbinator 3mo ago
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...