Physical Security with Redundancy at the Edge: A Typical Application

Physical security increasingly uses Ethernet and Power over Ethernet (PoE) for devices such as cameras, access control badge readers, and VOIP phones. Where these physical security devices are deployed outdoors and in harsh environments, small hardened Ethernet switches with PoE are used at the edge of the network. 

For high availability, redundant upstream connections into the network are desired, enabling the PoE-powered physical security devices to maintain operation even when there is a fault in the upstream network. The Magnum PESD42P Dual-Homing Edge Switch uniquely fills this requirement.

A typical application would be configured as shown here:

For additional availability to provide operation even when there is a fault in the power source to the Edge Switch, a dual-source IPS42 with redundant power inputs is available. A typical application would be configured as shown here:

For additional information on Dual-Homing, see Tech Brief.  For additional information on redundant LANs, see http://www.garrettcom.com/redundancy.htm and http://www.garrettcom.com/techsupport/papers/redundancy.pdf