Nodes that have not transmitted after the aging interval you specify on the network management console are removed. When new nodes become active, configuration is re-established with only one packet. This capability allows users to transparently connect to high-volume backbone networks. The Catalyst 3000 supports the configuration of MAC layer filters on a per-port basis. This flexibility allows network managers to specify client access only to designated resources for security purposes.
Filters can be for source or destination addresses.
This allows the network manager to restrict access to certain servers or MAC addresses or to specify that an end user can communicate with only one server. If the destination port is receiving a packet from another Catalyst 3000 port or if the output segment is busy, the Catalyst 3000 stores the packet in one of its internal buffers. This helps balance throughput when networks are operating near peak load and more than one packet may be directed to the same port at the same time. The advantage of using full-duplex is that communication packets can flow in both directions simultaneously, which results in doubling the throughput capacity on the segment. Full-duplex communication eliminates the performance degradation resulting from packet collisions.