Reference Guide

10 | Before You Start
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VLANs
By default, all Aggregator ports belong to all 4094 VLANs and are members of untagged VLAN 1.
You can use the CLI or CMC interface to configure only the required VLANs on a port.
When you configure VLANs on server-facing interfaces (ports 1 to 32), you can assign VLANs to a
port or a range of ports by entering the vlan tagged or vlan untagged commands in interface
configuration mode; for example:
Uplink LAG
The tagged VLAN membership of the uplink LAG is automatically configured based on the tagged and
untagged VLAN configuration of all server-facing ports (ports 1 to 32).
The untagged VLAN used for the uplink LAG is always the default VLAN.
Server-Facing LAGs
The tagged VLAN membership of a server-facing LAG is automatically configured based on the
server-facing ports that are members of the LAG.
The untagged VLAN of a server-facing LAG is configured based on the untagged VLAN to which the
lowest numbered server-facing port in the LAG belongs.
Tip: Dell Networking recommends that you configure the same VLAN membership on all LAG
member ports.
Stacking Mode
When you configure an Aggregator to operate in stacking mode (See “Configuring and Bringing Up a
Stack” in the Dell Networking Configuration Guide for the M I/O Aggregator), VLANs are
reconfigured as follows:
If an Aggregator port belonged to all 4094 VLANs in standalone mode (default), all VLAN
membership is removed and the port is assigned only to default VLAN 1. You must configure
additional VLAN membership as necessary.
If you had manually configured an Aggregator port to belong to one or more VLANs (non-default) in
standalone mode, the VLAN configuration is retained in stacking mode only on the master switch.
When you reconfigure an Aggregator from stacking to standalone mode:
Note: You can also use the CMC interface to configure VLANs.
FTOS(conf)# interface tengigabitethernet 0/2 - 4
FTOS(conf-if-range-te-0/2-4)# vlan tagged 5,7,10-12
FTOS(conf-if-range-te-0/2-4)# vlan untagged 3