Command switchport access vlan is useful together with trunk mode ?

[eigrpy]

Hi Anyone can talk a look the following configuration. Do you think the switchport access vlan 3 is useful together with trunk mode? Thank you

interface GigabitEthernet6/6
  switchport
 switchport access vlan 3
 switchport trunk allowed vlan 9
 switchport mode trunk

 channel-group 8 mode active

[devils_advocate · Accepted solution]

I think that because you have manually told the port it is going to be a Trunk (i.e switchport mode trunk) then the access vlan command is redundant.

The operational mode will be Trunk and if the other end is not configured as a Trunk then the port will not come up.

If you wanted to have the port failover to access mode if a Trunk is not negotiated then you can use the #switchport mode dynamic desirable. This means that if the other end wants to be a Trunk, you will get a Trunk. If the negotiation fails or the other end is configured as an access port then that is what you will get.