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Issue with access port switch to trunk port

Aymeric_cz
Level 1
Level 1

Hi !

We have 2 sg350-10 and 2 sg350-28.
Switch port move from access mode to trunk mode without any configuration of my hands on my computer, I think it’s really a problème.
If I turn off the switch and then on, without any copper connection, the start configuration is ok, but when I plug rj45 off my network some off access port switch to trunk port.
Do you know it?

Thanks in advance.

3 Replies 3

Mark Malone
VIP Alumni
VIP Alumni
Hi
is Auto Smart port feature enabled that could cause that , it van reconfigure ports automatically based on internal macros
you can disable it globally and retest

Global Cli command
no macro auto smartport

 

or GUI section

 

Enabled

Thanks but smart port is not between the Cisco devices ? 

The devices that cause issue, when port accès switch to trunk mode are not Cisco product but maybe, the Dante protocol by Audinate which is audio over ip, is known as the same ?

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