default vlan and native vlan

Answered Question
Jul 19th, 2007
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Hi


I've configured all my trunk connections to have the following:

switchport trunk encapsulation dot1q

switchport trunk native vlan 9

switchport mode trunk


All ports on my switch are trunk ports. However if I do show vlan brief I see all my ports listed in the default vlan i.e 1. Shouldn't they be in vlan 9? Can anyone explain this behaviour.


Thanks

Dan

Correct Answer by Amit Singh about 9 years 11 months ago

Dan,


Just to clear up the things, a trunkport is basically a port which belongs to all the vlan. Its doesnot belong to single vlan and it will never show you the same under " show vlan " if your trunk is working properly. If your port is not an active port and a trunkport, bydefault all the ports will be in vlan 1. The trunk port which is working fine should should you it as a port of both the vlan1 and the native vlan 9.


Do " show interface trunk " on your switch and it should tell you the same.


Let us know if you have any queries.


HTH,Please rate if it does.


-amit singh

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Martin Parry Thu, 07/19/2007 - 01:49
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Are your trunk links up up and actively trunking?



dan_track Thu, 07/19/2007 - 06:19
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Hi,


Only two trunks ports have somehting connected into them, the remainder haven't. It's those that are showing up in vlan 1.


Thanks

Dan

Correct Answer
Amit Singh Thu, 07/19/2007 - 06:28
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  • Cisco Employee,

Dan,


Just to clear up the things, a trunkport is basically a port which belongs to all the vlan. Its doesnot belong to single vlan and it will never show you the same under " show vlan " if your trunk is working properly. If your port is not an active port and a trunkport, bydefault all the ports will be in vlan 1. The trunk port which is working fine should should you it as a port of both the vlan1 and the native vlan 9.


Do " show interface trunk " on your switch and it should tell you the same.


Let us know if you have any queries.


HTH,Please rate if it does.


-amit singh

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