un tagged connectivity with trunk interface

david_kamal2000@yahoo.com · ‎11-13-2018

Hi,

i have core switch connected to firewall

the interface in core configuration is

interface Ethernet103/1/24
description PA-VM2 -VSwitch2
switchport
switchport mode trunk
no shutdown

interface Vlan3
no ip redirects
ip address 10.153.16.9/21
description Gateway_Of_Server_Zone
no shutdown

and from fw it is untagged interface L3 with ip 10.153.16.8

is that is possible? how they communicate in the switch port is not layer 3?

should it be

interface Vlan3
no ip redirects
ip address 10.153.16.9/21
description Gateway_Of_Server_Zone
no shutdown

?????

marce1000 · ‎11-14-2018

- On the trunk interface add switchport trunk native vlan 3

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

dbeattie · ‎11-14-2018

Does the interface need to be a trunk? You don't mention any other VLANs that are trunked to the firewall. If the firewall port is a standard L3 interface, wouldn't an access port on the switch be more appropriate?

Hope this helps,

Dave