OmniSwitch os6900 Network Configuration Manual page 258

Recommended Configuration Parameters
Parameter
Chassis ID (must be different between chassis)
Multi-Chassis Hello Interval
STP Path Cost Mode: Auto, 32-bit
STP Mode: 1x1, Flat
MCLAG LACP Type: MC-LACP, MC-Static
VLAN Configured on MCLAG aggregate
VLAN Type: Default, 802.1Q Tag
VLAN Enable State on MCLAG
LACP System ID (*)
LACP System Priority (*)
Note. AOS has global default values for the LACP System ID (derived from the system MAC address)
and LACP System Priority (a constant hard-coded value). Even though not widely used, the management
interface provides the ability to change these parameters on a per-aggregate basis. As a result, these
parameters are always treated as per-MCLAG aggregate.
page 10-34
Violation Impact
Global Parameters
Bring down all MCLAG aggregates
Per MCLAG Parameters
Bring the specific MCLAG aggregate down
OmniSwitch AOS Release 7 Network Configuration Guide
Configuring Multi-chassis Link Aggregation
June 2013