Re: Layer 2 question on trunks

From: Leigh Harrison (ccileigh@gmail.com)
Date: Tue Jan 03 2006 - 06:22:59 GMT-3


Hey there Lim,

As the command "switchport mode trunk" is in there, only "switchport
trunk" commands will be taken into account.

If it were "switchport mode access" then the "switchport access"
commands would be taken into account.

If it were set to dynamic mode, then it depends what kind of port it
thinks it is, as to which commands are used.

On this example, the switchport access vlan 567 will not be taken into
account, but the vlan WILL be created. If you needed the trunk port to
carry non vlan info, then you'd need a native vlan in there - which is a
switchport trunk command.

Hope this helps.

LH

lim es wrote:

>Hi Group,
>
>I was going through the ipexpert wb's solution and
>found this
>
>=====
>interface FastEthernet0/6
> description Connected to R6
> switchport access vlan 567 <<=========
> switchport trunk encapsulation dot1q
> switchport trunk allowed vlan 56,76
> switchport mode trunk
> no ip address
>=====
>
>it just seems werid to have a vlan assign to a trunk
>port.
>
>btw, this vlan(vlan 567) is not a requirement and it
>is not created, just assigned to the port
>
>I just wanna confirm if its right to say trunk ports
>should not be assign a vlan, they are there to carry
>vlan info across the layer 2 domain.
>
>Thanks for any feedback.
>
>Lim
>
>
>
>
>
>
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