User guide

Configuring Virtual Chassis Automatically Setting up a Virtual Chassis
OmniSwitch AOS Release 7 Switch Management Guide March 2015 page 12-29
Automatically Setting up a Virtual Chassis
Automatic Virtual Chassis can be used to ease the required manual configuration for a VC. The automatic
VC feature will allow a brand new chassis shipped from the factory or a chassis with no configuration to
be setup as a VC without user configuration.
There are two main components with the automatic Virtual Chassis feature:
• Automatic configuration of VFL IDs and ports
• Automatic chassis ID assignment
Benefits of automatic Virtual Chassis.
• Existing switches configured in standalone mode will be unchanged and remain in standalone mode.
• Existing switches configured as part of a VC will be unchanged and remain as part of an existing VC.
• Newly shipped switches or switches with no configuration will default to automatic VC mode and the
automatic VC feature will run.
Automatic Virtual Chassis Concepts and Components
Automatic VC can be used to ease a VC setup. The automatic VC feature will allow a brand new chassis
shipped from the factory or a chassis without a configuration to be setup as part of a VC without user
configuration.
VFL Mode - A chassis can operate in either automatic VFL mode or static VFL mode but not both at the
same time. Static VFL mode is what has been supported in previous releases where the VFL is configured
by explicitly creating VFL IDs and specifying its member ports. In automatic VFL mode the user speci-
fies ports that are designated as automatic VFL ports, or uses the default set of automatic VFL ports, and
the software will automatically assign VFL IDs.
Automatic VFL port - A port that is eligible to participate in the automatic VFL process.
Automatic Chassis ID Assignment - Automatic chassis ID assignment is used to automatically config-
ure a chassis ID.
VC License - The automatic VC feature must have a valid license to operate. This can be either a perma-
nent or demo license.
VFL Mode
A VC can operate in either automatic or static VFL mode. In static VFL mode VFLs are configured by
explicitly creating VFL IDs and specifying member ports. In automatic VFL mode ports only have to be
designated as automatic VFL ports and the system will automatically assign VFL IDs, chassis IDs, and
aggregate the VFL member ports if possible.
The virtual-chassis vf-link-mode command is used to modify the VFL mode. It is a global configuration
that applies to all chassis in the VC.
• If the chassis boots without vcsetup.cfg file, by default the chassis is in automatic VFL mode.
• If the vcsetup.cfg file exists but the VFL mode configuration virtual-chassis vf-link-mode {static |
auto} is not in the vcsetup.cfg file, the chassis boots up in static VFL mode. This scenario would apply