Re: Switchport access and trunk?

From: Bob Sinclair (bsin@cox.net)
Date: Tue Mar 29 2005 - 17:42:26 GMT-3


Balaji,

It seems to me that the access vlan and the native vlan may be different.
Setting the access vlan, as below, does not change the native vlan from the
default vlan 1. If this port stops trunking, it will be in access vlan 10.
While it trunks vlan 10 will be tagged.

interface FastEthernet0/8
 switchport access vlan 10
 switchport trunk encapsulation dot1q
 switchport mode trunk

CAT1#sh int f0/8 trunk

Port Mode Encapsulation Status Native vlan
Fa0/8 on 802.1q trunking 1

Port Vlans allowed on trunk
Fa0/8 1-4094

Port Vlans allowed and active in management domain
Fa0/8 1,10,100

Port Vlans in spanning tree forwarding state and not pruned
Fa0/8 1,10,100

Bob Sinclair
CCIE #10427, CCSI 30427, CISSP
www.netmasterclass.net

  ----- Original Message -----
  From: Balaji Siva
  To: gladston@br.ibm.com
  Cc: ccielab@groupstudy.com
  Sent: Friday, February 25, 2005 12:08 AM
  Subject: Re: Switchport access and trunk?

  It would be native vlan of the trunk port (in the case dot1q) . so it
  is relevant.

  Thanks
  Balaji

  On Thu, 24 Feb 2005 19:34:44 -0500, gladston@br.ibm.com
  <gladston@br.ibm.com> wrote:
> Hi Jonathan,
>
> No, it is not necessary. It could be the case someone configured the port
as access in the past, and now the port is configured as trunk. It does not
help or hurt.
>
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