Jay Vosburgh wrote:
I haven't studied the effects of having large amounts of multicast traffic coming in under this situation.However, I would suspect that the MAC filters found on sufficiently modern network adapters would drop the incoming multicast traffic on the backup slaves, as only the active slave in active-backup mode has its multicast list set. That information is sent to a slave when it becomes the active slave; see the call to bond_mc_swap() made by bond_change_active_slave().
OK, i agree the MAC filter would drop the incoming traffic on the backup slaves b/c bond_mc_swap() calls bond_mc_delete() on the slave which becomes a backup one. But as you have noted there might be some impact on the switch.
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