The dcn vlan command configures a DCN virtual local area network (VLAN).
The undo dcn vlan command deletes the DCN VLAN configuration.
By default, no DCN VLAN is configured in router mode, and the DCN VLAN ID is 4094 in transport mode.
This command varies in transport and router modes. For detailed differences, see Differences Between Commands in Transport and Router Modes. This topic describes the command configuration in router mode.