Under what condition need to configure spanning-tree portfast trunk?

[Ericloh]

Under what condition need to configure spanning-tree portfast trunk?

In Ruckus AP?

Switch#show run int gi1/0/2
Building configuration...

Current configuration : 198 bytes
!
interface GigabitEthernet1/0/2
description *** Ruckus AP ***
switchport trunk native vlan 100
switchport mode trunk
storm-control broadcast level 30.00
spanning-tree bpduguard enable
end

[Fotiosmark · Accepted solution]

Basically, you shouldn't activate portfast trunk towards a router.
My experience, I have only see and configure that command when there is an ESXI connected to the switch with multiple interfaces set as a trunk where multiple VMs runs to different Vlans.
It uses Trunk to pass all the vlans, and the portfast to bypass the normal spanning-tree timers.

Here is an example.

https://cciepursuit.wordpress.com/2009/01/20/enabling-portfast-on-trunks/

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