Each active gateway sends a periodic broadcast hello packet to avoid VMAC aging on the access switches. Active gateway is similar to VRRP in that routed traffic from the VSX node is sourced from the switch interface MAC and not the virtual MAC address (VMAC). If you have enabled active gateway, VRRP is not required. An active gateway improves the reliability and performance of the host network by enabling a virtual router to act as the default gateway for that network. The active gateway feature is used to increase the availability of the default gateway servicing hosts on the same subnet. Active gateway is a first hop redundancy protocol that eliminates a single point of failure.
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