As found in the EXOS user guide,
Load Sharing Guidelines
For Summit Family Switches and SummitStack the following rules apply to load sharing.
• A static LAG can contain up to eight ports.
• An LACP LAG can contain twice the number of ports as a static LAG. The maximum number of
selected links is the same as the limit for a static LAG. The remaining links are standby links.
• A Health Check LAG can contain the same number of ports as a static LAG.
• The maximum number of LAGs for Summit family switches is 128.
For the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X870 series switches, the
following rules apply to load sharing.
• A static LAG can contain up to 32 ports when configured to use the L2,L3,L3_L4 or custom
• For all the algorithms, LACP LAG can contain up to 64 ports per LAG, which includes up to 32
selected links and 32 standby links.
• A SummitStack consisting entirely of X450-G2, X460-G2, X670-G2, X770, and X870 switches can
contain up to 64 ports for all algorithms. All platforms have the same stacking limits.