Hi Lubo,
It will be VLAN 1, since you have configured the switchport as a static access port, and then any trunking commands is irrelevant.
Rack1SW1(config)#interface f0/23
Rack1SW1(config-if)#switchport trunk native vlan 101
Rack1SW1(config-if)#switchport mode access
Rack1SW1(config-if)#
Rack1SW1(config-if)#
Rack1SW1(config-if)#^Z
Rack1SW1#sh int
Rack1SW1#sh interfaces
19:12:02: %SYS-5-CONFIG_I: Configured from console by console
Rack1SW1#sh interfaces f0/23 sw
Rack1SW1#sh interfaces f0/23 switchport
Name: Fa0/23
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: negotiate
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 101 (Inactive)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Rack1SW1#
HTH,
Mohammed Mahmoud.
