Siemens SCALANCE XM-400 Instructions Manual page 31

3 Engineering VRRP
4. Leave the "Master" function unticked.
The reason for this is that when the master is named explicitly, its IP address is
also automatically entered as the Associated IP Address. This is not desired
here, as the VRRP partners should respond to a third, virtual IP address.
5. Leave the "Advertisement Interval" at one second (10 cs = 1 s).
6. Check the box for "Preempt lower priority master".
This ensures that, if a master returns, it will reassume the master role.
7. Click the "Set Values" button.
8. Now select vlan20/ 20 under Interface / VRID in the same dialog and enter the
values according to the following image.
9. Click the "Set Values" button and close the dialog.
VRRP
Entry-ID: 109798556, V1.0, 09/2021
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