IPv6
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Route-based proxy neighbor discovery for VM gateways (QFX5110)—Use route-based proxy neighbor discovery to address network connectivity issues between virtual machines (VMs) on different physical networks. . This approach enables the gateway to send its MAC address to the source VM, facilitating communication over routes instead of Layer 2 (L2) switching. By maintaining host routes in the routing information base (RIB), you can ensure reachability and redistribute routes into BGP or interior gateway protocols (IGPs). Note that proactive Address Resolution Detection (ARP) detection is supported, while proactive IPv6 neighbor learning is not. This method is limited to default routing tables.
Route-based proxy neighbor discovery for host gateways (QFX5110, QFX5120-32C, QFX5120-48T, QFX5120-48Y, QFX5120-48YM, QFX5200, QFX5210 switches)—Use route-based proxy neighbor discovery to address network connectivity issues between hosts on different physical networks. This approach enables the gateway to send its MAC address to the source host, facilitating communication over routes instead of initiating Layer 2 switching. By maintaining host routes in the routing table, you can ensure reachability and redistribute routes into BGP or interior gateway protocols (IGPs). Note that, the QFX5000 series supports proactive Address Resolution Protocol (ARP) detection, but doesn’t support proactive IPv6 neighbor learning. You can use this method only with default routing tables.