Dell PowerEdge M IO Aggregator Quick Start Guide download pdf (Page 21)

brought down after the specified defer-timer interval, which is 10 seconds, by default. If you have

configured VLAN, you can reduce the defer time by changing the defer-timer value or remove it by using

the no defer-timer command.

NOTE: If installed servers do not have connectivity to a switch, check the Link Status LED of uplink

ports on the aggregator. If all LEDs are on, to ensure the LACP is correctly configured, check the

LACP configuration on the ToR switch that is connected to the aggregator .

Configuring VLANs

By default, in Standalone mode, all aggregator ports belong to all 4094 VLANs and are members of

untagged VLAN 1. To configure only the required VLANs on a port, use the CLI or CMC interface.

When you configure VLANs on server-facing interfaces (ports from 1 to 8), 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:

Dell(conf)# interface tengigabitethernet 0/2

Dell(conf-if-te-0/2)# no auto vlan

Dell(conf-if-range-te-0/2-4)# vlan tagged 5,7,10-12

Dell(conf-if-range-te-0/2-4)# vlan untagged 3

Uplink LAG

The tagged VLAN membership of the uplink LAG is automatically configured based on the VLAN

configuration of all server-facing ports (ports from 1 to 8).

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.

NOTE: Dell Networking recommends configuring the same VLAN membership on all LAG member

ports.

Mode Transitions

To change between different supported modes of an I/O Aggregator, refer to Programmable-MUX Mode

and Assembling a VLT sections.

When you configure an aggregator to operate in VLT Mode:

• If the aggregator port belongs to all 4094 VLANs in Standalone mode (default), all VLAN membership

is removed and the port is assigned only to default VLAN1. You must configure additional VLAN

membership as required.

• If you manually configured an aggregator port to belong to one or more VLANs (non-default) in

Standalone mode, the VLAN configuration is retained in VLT mode.

For more information, refer to Configuring and Bringing Up a VLT.

When you reconfigure the aggregator from VLT to Standalone mode:

• Aggregator ports that you manually configured for VLAN membership in VLT mode retain their VLAN

configuration in Standalone mode.

Installing and Configuring the Aggregator

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Dell PowerEdge M IO Aggregator Quick Start Guide Page 21