Hello @ChrisNewnham_,
To tune the shortest possible link-bundling time with LACP, it is recommended to configure both ends of the link as "active" mode. In LACP, there are two modes: active and passive. The active mode means that the device actively tries to negotiate and form an LACP link with the remote device, while the passive mode waits for the remote device to initiate the negotiation. By setting both ends as active, you ensure that both devices actively participate in the negotiation process, which can help in establishing the link aggregation faster.
The "lacp rate fast" command you mentioned is specific to Cisco devices. It enables a fast periodic transmission of LACP control messages, which can help in detecting and recovering from link failures quickly. However, it does not directly impact the link-bundling time.
LACP (IEEE 802.3ad) is a widely supported standard protocol for link aggregation, and it is not limited to Cisco devices. LACP is supported by various networking vendors, including but not limited to Juniper Networks, Arista Networks, Hewlett Packard Enterprise (HPE), Extreme Networks, and many others. It is a common feature found in enterprise-grade network switches and routers across different vendors.
Best regards
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