This feature allows switches to configure the VRRP virtual IP as an NTP server address. The NTP server, when configured on the VRRP master, listens on the actual IP and virtual IP address for NTP clients.
On the VRRP backup node, only one socket is opened and bound to the physical IP address alone. Once a node transitions to the VRRP master, the ExtremeXOS software re-triggers a listen on the interface to ntpd for it to open a socket and bind to the VRRP VIP.
NoteIf you want to configure VRRP VIP as the server address on NTP clients, enable accept mode.
This problem can be more acute if a node connected to VRRP peers using MLAG and VRRP is in active-active mode. In this case, it is possible that every other packet could be sent to a different switch due to LAG hashing at the remote node.