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Beginner

cat4500e dot1q encapsulation command fails

     I have a Catalyst 4500 L3 Switch Software (cat4500e UNIVERSAL-M), Version 03.02.00.XO RELEASE SOFTWARE (fc2). So I just wanted to verify that the switch only does dot1q encapsulation because the switchport trunk encapsulation dot1q command does not work. Is this documented somewhere.            

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Advisor

cat4500e dot1q encapsulation command fails

  You can be reasonably sure if the commands are not there it is all it supports . I believe you can check with something like show int capabilities .

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Hall of Fame Community Legend

cat4500e dot1q encapsulation command fails

Depends on your linecard (not the supervisor card).

Some line card will only support 802.1Q so entering the command will result in an error message.

As what Glen has posted, if you enter the command "sh interface cap" and scroll down to "Trunk encap. type".  If you get only 802.1Q then this is the reason.

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Beginner

cat4500e dot1q encapsulation command fails

Thank for the quick response this helps.

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