User guide

Configuring Virtual Chassis Automatically Setting up a Virtual Chassis
OmniSwitch AOS Release 7 Switch Management Guide March 2015 page 12-33
Automatic Virtual Chassis Scenarios
Boot up with no vcsetup.cfg file
1 Since the chassis has no configuration it will begin the automatic VFL process by default.
2 The chassis will create a new vcsetup.cfg file and temporarily use chassis ID 1 while running the
discovery protocol on the default set of automatic VFL ports.
3 The chassis will communicate with its peers that are also running the VFL protocol to determine which
ports will become VFL member ports and what the VFL IDs will be. Multiple ports connected to the same
peer chassis will be aggregated and assigned the same VFL ID. Ports connected to different chassis will be
assigned different VFL IDs.
4 Once the VFLs are configured a Master chassis will be elected using the Master chassis election crite-
ria.
5 Once a Master chassis is identified the Slave chassis will be assigned unique chassis IDs using the
automatic chassis ID assignment procedure.
6 The chassis ID, automatic VFL mode, and automatic VFL port information will be written to the
vcsetup.cfg file. For the default set of automatic VFL ports that did not become VFL member ports, no
configuration information will be saved and those ports will no longer be automatic VFL ports.
7 All Slave chassis will be rebooted and rejoin the VC.
Bootup with vcsetup.cfg file and automatic VFL mode enabled
1 Since the chassis has a configuration and automatic VFL is enabled it will begin the automatic VFL
process.
2 The chassis will use the configured chassis ID while running the discovery protocol on the configured
set of automatic VFL ports.
3 The chassis will communicate with its peers that are also running the VFL protocol to determine which
ports will become VFL member ports and what the VFL IDs will be. Multiple ports connected to the same
peer chassis will be aggregated and assigned the same VFL ID. Ports connected to different chassis will be
assigned different VFL IDs.
4 Once the VFLs are configured a Master chassis will be elected using the Master chassis election crite-
ria and the VC will become active.
Runtime automatic VFL configuration
1 The chassis will begin the automatic VFL process on the newly configured automatic VFL ports.
2 The chassis will communicate with its peers that are also running the VFL protocol to determine which
ports will become VFL member ports and what the VFL IDs will be. Multiple ports connected to the same
peer chassis will be aggregated and assigned the same VFL ID. Ports connected to different chassis will be
assigned different VFL IDs.