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.
You can configure only the address-based load-sharing algorithm as described in the following sections:
The maximum number of LAGs for Summit family switches is 128.

Note

See Configuring LACP for the maximum number of links, selected and standby, per LACP.

The limits on the number of ports per LAG are different for X670. The following rules apply to load sharing on the X670.

A static LAG can contain up to 32 ports when configured to use the custom address-based algorithm. For all other algorithms, a static LAG can contain up to 16 ports.
An LACP LAG configured to use the custom address-based algorithm can contain up to 64 ports per LAG, which includes up to 32 selected links and 32 standby links. For all other algorithms, an LACP LAG can contain up to 32 ports per LAG, which includes up to 16 selected links and 16 standby links. A static LAG in a SummitStack consisting entirely of X670s can contain up to 64 ports when configured to use the custom address-based algorithm.

Guidelines for the Summit X460-G2, X670-G2, and X770 Switches

For the Summit X460-G2, X670-G2, and X770 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 algorithm.
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 X770s can contain up to 64 ports for all algorithms.

For BlackDiamond X8 Series Switches and BlackDiamond 8800 Series Switches the following rules apply to load sharing.

BlackDiamond X8

The maximum number of LAGs is 384.
A static LAG can contain up to 64 ports.
An LACP LAG can contain up to 128 links per LAG, which includes up to 64 selected links and 64 standby links.

BlackDiamond 8800

A static LAG can contain up to 8 ports.
An LACP LAG can contain up to 16 links per LAG, which includes up to 8 selected links and 8 standby links.
A Health Check LAG can contain the same number of ports as a static LAG.
You can configure only the address-based load-sharing algorithm as described in GUID-1F8D87D0-A881-4921-818F-45B00DFC4126.
The maximum number of LAGs is 128. See Configure LACP for the maximum number of links, selected and standby, per LACP.

Published March 2020prev | next