Lossless recovery

The lossless recovery feature ensures that recovery from the backup adapter to the primary channel loses as few packets as possible.

Before lossless recovery, EtherChannel or IEEE 802.3ad would recover to the primary channel at the same instant it detected the recovery of one of the primary adapters. In some cases, the adapter's switch would not be in a state in which it could send or receive data, and some packets would get lost immediately after a recovery.

With lossless recovery, the EtherChannel or IEEE 802.3ad adapter recovers to the primary channel only when it has been able to actually receive traffic on it. This ensures that the switch port is fully initialized and no packets get lost.