Alcatel-Lucent 7750 Configuration Manual page 514

Interfaces
Parameters value — 0..63
action { dynamic-cost | down} — Specifies the action to take if the total weight of active links in the LAG
is at or below the threshold value. When the dynamic-cost action is specified then dynamic costing will
be activated. As a result the LAG will remain operationally up with a cost relative to the number of
operational links. The link will only be regarded as operationally down when all links in the LAG are
down. When the down action is specified then the LAG will be brought operationally down if the total
weight of operational links is equal to or less than the configured threshold value. The LAG will only be
regarded as up once the total weight of operational links exceeds the configured threshold value.
Page 514 7750 SR Interface Configuration Guide