spnee tree portfast

in  port switch i make spnee tree portfast if direct connect to router or another Switch making loop-back or it is recommend !!!
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sorry i don't understand your question.
please give more detail on your issue

Spanning Tree Protocol (STP) was created to avoid link loops in network.
please read about:
If you can be sure that you can't have loops in your network, you can disable spanning tree in your switch else let it enable.
Caution : always use "PortFast STP" or "Rapid STP" version of STP ( = 802.1W) rather old STP (801.D) which is too slow.

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