Trunking Question

[Patrick McHenry]

Quick Trunk questions. It doesn't matter what the Access mode VLAN is if the port is trunking, correct?

Thanks, Pat.

NCR19#sh int g0/17 sw
Name: Gi0/17
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 17

Trunking Native Mode VLAN: 1 (default)
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

[Eehab Suliman · Accepted solution]

You are correct. Access mode vlan doesnt matter.

Negotiation of Trunking: On

this is why the trunk will come up regardless.

Please rate answers you find useful.

[andtoth · Accepted solution]

Hi,

The operational mode is trunking, which means the switchport is indeed running in trunk mode, therefore the access vlan does not matter.

Operational Mode: trunk

Best regards,

Andras