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The Passport 1600 Series switch uses a filtering database to segment the network and control communication between segments. It can also filter packets off the network for intrusion control. Static filtering entries can be made by MAC Address or by IP Address filtering.
IP filters apply to all routed IP packets to be forwarded through a switch on specified ingress ports. The filters are applied to the ingress packets for specified IP addresses (either unicast or multicast), and are determined to be source, destination, or either type packets. All packets matching the filter criteria are dropped and those not matching are forwarded.
Each port on the switch is a unique collision domain and the switch filters (discards) packets whose destination lies on the same port as where it originated. This keeps local packets from disrupting communications on other parts of the network.
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