I have 2 servers and two switches. Each server is connected to each switch and MLAG is configured. The application on the server is a redundant one, in a way that active IP address is present only on one server. Both servers (when active) send traffic only towards one switch, and can receive traffic from both switches.
The problem begins when we do a switchover (for example from server A to
. Server_B becomes active, takes the ownership of IP address and sends a gratuitous arp. Since traffic is sent only to switch_A switch A receives it
I read this: "However, flood and multicast traffic will traverse the ISC but will be dropped from MLAG peer port transmission by the ISC blocking filter mechanism."
That means, that switch_A gets the gratuitous arp packet, updates its' own iparp table, sends it to ISC link, and switch_B drops the packet.
Is this correct way of working, or am I missing something? Will switch_B check something against its' fdb table? What is the way of working behind it?