Not able to change auto to trunk mode on switch

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glen.grant Wed, 05/24/2006 - 15:30
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You have to specifically set the encapsulation type first "switchport encapsulation dot1q" then try youir command...

glen.grant Wed, 05/24/2006 - 16:32
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You need to specifically set the encapsulation first , "switchport encapsulation dot1q" then issue your trunk command...

glen.grant Wed, 05/24/2006 - 16:36
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can you post the config...

ankurbhasin Wed, 05/24/2006 - 22:00
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Hi All,


The command which he need to enter first is


"switchport trunk encapsulation dot1q " and then he can confgigure the interface in trunk mode.


So try this command


switch(config)#interface fa0/1

switch(config-if)#switchport trunk encapsulation dot1q

switch(config-if)#switchport mode trunk


and you will be good to go.


HTH, if yes please rate the post.


Ankur

ankurbhasin Fri, 05/26/2006 - 00:31
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Hi Friend,


Thats not required because if you put the config which I posted in my previous mail it will take care of the issue.


HTH, if yes please rate the post.


Ankur

FatimaBeyelhadj Wed, 10/02/2013 - 09:28
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This worked on one of the switches and not the other?! 

What do you think could be the cause besides lab technical issues?

Serge Amos Wed, 10/09/2013 - 05:39
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Could you run a " sh int gig #/# capabilities"

look under Trunk encap. type:

and Trunk mode:


it will give you capabilities information of the port

zul qarnain Fri, 06/13/2014 - 17:14
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Hi Ankur,

I have question why for switch multilayer is different from switch not multilayer if we need configure trunk on port?

 

Thanks,

suyash.ag92 Tue, 12/06/2016 - 01:20
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switchport trunk encapsulation dot1q is not working.  After switchport trunk its not accepting encapsulation

randdavis Tue, 07/12/2016 - 16:22
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Thanks your guidance worked great and now my ports are trunking.

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