With link state mirroring, PacketWise will bring down the second port of a NIC pair if the first goes down. This feature allows each Packeteer unit to sit between a WAN router and a switch without blocking detection of switch outages by the router. Link state mirroring is automatically enabled when direct standby is enabled if the redundant management port is connected.
Yes, you can enable link state mirroring without having direct standby enabled. To enable link state mirroring, go to the System Variables setup page.