6
Assembling a VLT
After you complete the initial configuration, the aggregator is powered up and operational.
VLT is limited to two aggregators of the same SKU in the same chassis. In the aggregator, VLT is
supported only using a single inter chassis link (ICL) link between the two aggregators.
Cabling the VLT
The following figure shows a VLT example using two aggregators in a chassis. The aggregators are
connected to operate in VLT using only uplink port 9 which is a static ICL, when operating in 10G speed.
Prerequisite
: Before you attach the VLT cables, you must power up both aggregators with the default or
reconfigured settings as described in
Reconfiguring Default Settings
Figure 7. Switch VLT Using 10GbE Ports on Two Aggregators
Configuring and Bringing Up a VLT
1.
Connect the terminal to the console port on an aggregator. To access the CLI and configure the
device in VLT mode, enter the following commands:
Login: username
Password: *****
Dell> enable
Dell# configure
Dell(conf)# stack-unit 0 iom-mode vlt
% You are about to configure Auto VLT to your IOA module, in 10G Uplink
Mode please reload the IOA and then plug in the ICL cable for the changes
to take effect.
Where
stack-unit 0
defines the default stack-unit number in the initial configuration of a switch.
2.
Repeat on the other aggregator in the VLT by entering the
stack-unit 0 iom-mode vlt
command and saving the configuration.
3.
Reboot each aggregator by entering the
reload
command in EXEC Privilege mode:
Dell# reload
System configuration has been modified. Save? [yes/no]: n Proceed with
reload [confirm yes/no]: y
After you attach the cables in a VLT of an aggregator, follow these steps to configure and bring up
the VLT.
To connect the VLT ports, use only the appropriate cable type based on the type of SKU; for
example:
a.
Insert an SFP+ Multimode fiber/10g direct attach cable (DAC) into port 9 on the top aggregator.
Assembling a VLT
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