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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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Default VLAN

All interface ports are administratively up in L2 mode and are automatically placed in the default VLAN as untagged interfaces.

When you assign a port to a non-default VLAN in Trunk mode, the interface remains an untagged member of the default VLAN and a tagged member of the new VLAN. When you assign a port to a non-default VLAN in Access mode, it removes from the default VLAN and is assigned to the new VLAN as an untagged member of the new VLAN.

  • VLAN 1 is the default VLAN.
  • You cannot delete the default VLAN. However, you can change the default VLAN ID number using the default vlan-id command.
NOTE The IOM cluster running 10.5.x and 10.4.x does not work as expected when the untagged VLAN is not VLAN1 on the server ports.

Use the show vlan command to verify that the interface is part of the default VLAN (VLAN 1).

Default VLAN configuration 

OS10# show vlan

Codes: * - Default VLAN, G-GVRP VLANs, R-Remote Port Mirroring VLANs, P-Primary, C-Community, I-Isolated
Q: A-Access (Untagged), T-Tagged
   x-Dot1x untagged, X-Dot1x tagged
   G-GVRP tagged, M-Vlan-stack, H-VSN tagged
   i-Internal untagged, I-Internal tagged, v-VLT untagged, V-VLT tagged
    NUM    Status    Description   Q Ports
*   1      up                      A Eth1/1/1-1/1/54

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