The value of tmnxMcacLagBundleLevel specifies the level id to use
when the value of tmnxMcacLagPortsDown matches the actual number
of ports down in a lag.
Using the value of tmnxMcacLagBundleLevel as an index, the
operation bundle bandwidth will be set to tmnxMcacLevelBW.
By default for all lag constraints the bundle level will be
set to 1 at row creation.