White Papers

Table Of Contents
Configuring VLAN Membership
By default, all Aggregator ports are member of all (4094) VLANs, including the default untagged VLAN 1. You can use the CLI
or CMC interface to reconfigure VLANs only on server-facing interfaces (18) so that an interface has membership only in
specified VLANs.
To assign an Aggregator interface in Layer 2 mode to a specified group of VLANs, use the vlan tagged and vlan
untagged commands. To view which interfaces are tagged or untagged and to which VLAN they belong, use the show
vlan command (Displaying VLAN Membership).
To reconfigure an interface as a member of only specified tagged VLANs, enter the vlan tagged command in INTERFACE
mode:
1. Add the interface as a tagged member of one or more VLANs, where: vlan-id specifies a tagged VLAN number. Range:
2-4094.
INTERFACE mode
vlan tagged {vlan-id }
To reconfigure an interface as a member of only specified untagged VLANs, enter the vlan untagged command in
INTERFACE mode:
1. Add the interface as an untagged member of one or more VLANs, where: vlan-id specifies an untagged VLAN number.
Range: 2-4094.
INTERFACE mode
vlan untagged {vlan-id}
If you configure additional VLAN membership and save it to the startup configuration, the new VLAN configuration takes place
immediately.
Dell Networking OS Behavior: When two or more server-facing ports with VLAN membership are configured in a LAG based
on the NIC teaming configuration in connected servers learned via LACP, the resulting LAG is a tagged member of all the
configured VLANs and an untagged member of the VLAN to which the port with the lowest port ID belongs. For example, if port
0/3 is an untagged member of VLAN 2 and port 0/4 is an untagged member of VLAN 3, the resulting LAG consisting of the two
ports is an untagged member of VLAN 2 and a tagged member of VLAN 3.
Displaying VLAN Membership
To view the configured VLANs, enter the show vlan command in EXEC privilege mode:
Dell#show vlan
Codes: * - Default VLAN, G - GVRP VLANs, R - Remote Port Mirroring VLANs, P - Primary, C
- Community, I - Isolated
O - Openflow
Q: U - Untagged, T - Tagged
x - Dot1x untagged, X - Dot1x tagged
o - OpenFlow untagged, O - OpenFlow 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 Inactive U Te 0/1-8
Dell#
NOTE:
A VLAN is active only if the VLAN contains interfaces and those interfaces are operationally up. In the above
example, VLAN 1 is inactive because it does not contain any interfaces. The other VLANs listed contain enabled interfaces
and are active. In a VLAN, the shutdown command stops Layer 3 (routed) traffic only. Layer 2 traffic continues to pass
through the VLAN. If the VLAN is not a routed VLAN (that is, configured with an IP address), the shutdown command has
no affect on VLAN traffic.
340 Interfaces