D-Link DFL-260 Product Manual - Page 159
Not all interfaces can make use of Proxy ARP, Proxy ARP and High Availability Clusters
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4.2.6. Proxy ARP Chapter 4. Routing Proxy ARP and High Availability Clusters In HA clusters, switch routes cannot be used and transparent mode is therefore not an option. However, proxy ARP does function with HA and is consequently the only way to implement transparent mode functionality with a cluster. Not all interfaces can make use of Proxy ARP It is only possible to have Proxy ARP functioning for Ethernet and VLAN interfaces. Proxy ARP is not relevant for other types of NetDefendOS interfaces since ARP is not involved. Automatically Added Routes Proxy ARP cannot be enabled for automatically added routes. For example, the routes that NetDefendOS creates at initial startup for physical interfaces are automatically added routes. The reason why Proxy ARP cannot be enabled for these routes is because automatically created routes have a special status in the NetDefendOS configuration and are treated differently. If Proxy ARP is required on an automatically created route, the route should first be deleted and then manually recreated as a new route. Proxy ARP can then be enabled on the new route. 159