On 22/09/2016 19:02, Slawa Olhovchenkov wrote:
On Thu, Sep 22, 2016 at 05:50:09PM +0100, Steven Hartland wrote:

Having tested with a number of vendor switches Cisco, Extreme and more
recently Arista only sending gratuitous ARP for IPv4 and unsolicited NA
for IPv6 reliably resulted in rapid failover between LAGG ports.

Other methods like sending correctly addressed output from the new port
helped, we tested this with outbound pings from IPMI, but still resulted
in noticeable recovery delay.
Can you give network diagram and switchs configs for this?
Recovery delay on lagg interface and lacp protocol must be about 2s by
default configuration.
This is failover not LACP which is something quite different.
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