Fix lỗi: Command rejected: An interface whose trunk encapsulation is "Auto"

Hướng dẫn Fix lỗi: Command rejected: An interface whose trunk encapsulation is "Auto" can not be configured to "trunk" mode

Để fix lỗi này bạn chỉ cần gõ lệnh sau:

=====================
conf t
int gi0/10
switchport trunk encapsulation dot1q

=====================

Bài viết tiếng Anh:

How to fix “An interface whose trunk encapsulation is Auto can not be configured to trunk mode” in cisco switch

Posted on August 17, 2011 by ruchi 1 Comment
When you try to configure trunk port you might see following error
An interface whose trunk encapsulation is Auto can not be configured to trunk mode

To fix this you need set encapsulation to 802.1q using the following
command:


conf t
int gi4/10
switchport trunk encapsulation dot1q



This should fix your issue