User guide

Automatically Setting up a Virtual Chassis Configuring Virtual Chassis
page 12-30 OmniSwitch AOS Release 7 Switch Management Guide March 2015
to a chassis that is being upgraded from a previous release that doesn’t support automatic VFL.
release).
• Chassis must have the same VFL mode to form a VC.
• An “out-of-the-box” chassis or a chassis with no configuration file will default to automatic VFL
mode. For this chassis to automatically join an existing VC, the existing VC must be in VFL automatic
VFL mode. If the existing VC is not in automatic VFL mode it can be converted to automatic mode or
the new chassis can be changed to static mode in order to join the existing VC.
• The VFL mode of a VC can be changed at runtime without a reboot. This is global configuration
change and applies to all the chassis in the VC.
Automatic VFL
Automatic VFL detection process will run to automatically configure the VFL ports on a VC. The process
is only run on ports that are eligible to be an automatic VFL port. Automatic VFL has the following guide-
lines:
• Automatic VFL ports must be a 10Gbps or 40Gbps port.
• Automatically detects whether an automatic VFL port should become a VFL member port.
• Dynamically assigns a VFL ID to an automatic VFL port which becomes a VFL member port.
• Aggregates multiple VFL member ports that are connected to the same remote chassis.
• Uses a default set of ports that are eligible to be automatic VFL ports. See “Virtual Chassis Default
Values” on page 12-4.
The automatic VFL process is run under the following conditions:
• Chassis boots without a vcsetup.cfg or boot.cfg file. Since there is no configuration, the default set of
ports will be used to run the automatic VFL process.
• If the speed of the transceiver in the set of the default ports is not 10G or 40G that port cannot
become a VFL member port.
• If the media type of the port in the set of default ports is copper, that port cannot become a VFL
member port.
• Once the automatic VFL discover period ends, any ports that have not been configured as VFL
member ports will become regular front panel ports.
• The chassis boots with a vcsetup.cfg file. Then the automatic VFL process is run only on those ports
explicitly configured as auto VFL ports.
Configuring Automatic VFL Ports
To configure a port to become an automatic VFL port use the virtual-chassis auto-vf-link-port
command. This allows a port to participate in the automatic VFL process.
Converting the VFL Mode
The VFL mode of a VC can be changed at runtime using the virtual-chassis vf-link-mode command. This
is a global configuration change that applies to all chassis in the VC. This change does not require a
reboot.