mkr — Zyxel Community

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No, I couldn't find a solution yet. We have postponed further diagnosis because we got firmware update problems too with the ZyWALL 1100 with Device HA and we got offered a good deal for two FLEX 700. In the next months we will migrate our configuration and replace the devices. I hoped the problems would be gone with…

in ZyWALL not sending gratuitous ARP on WAN for NAT addresses after failover Comment by mkr January 2022
Hi @Zyxel_Can, thank you for your response. This is the topology: I will send you the configuration by private message. I'm not able to send you packet captures at the moment, but I will try to make it happen.

in ZyWALL not sending gratuitous ARP on WAN for NAT addresses after failover Comment by mkr May 2021
Hi @Zyxel_Can The WAN type is static IP (Ethernet).

in ZyWALL not sending gratuitous ARP on WAN for NAT addresses after failover Comment by mkr April 2021
Hello again, I have to correct myself. It was wrong thinking: the switch does only store MAC and port in its ARP table, not the IP. So one GARP from the WAN interface will suffice. The problem seems to be that the firewall does not send one GARP after failover. Can this be confirmed?

in ZyWALL not sending gratuitous ARP on WAN for NAT addresses after failover Comment by mkr April 2021