802.1x network access control combined with radius authentication ensures secure access to resources. additionally, radius authenticated device access (rada) enables authentication of attached devices via mac address. port-based access control lists (acls) secure shell (sshv2) and snmpv3 support ensure secure management access to switches via authentication and encryption of management traffic. dynamic voice over ip: unique voice vlan feature detects the presence of ip phones and dynamically assigns switch ports to the voice vlan, enabling automated configuration and prioritization of voip traffic. performance: aggregate switching capacity up to 8.8 gbps.dual gigabit uplinks on each switch unit enable high-speed connections to the network backbone or locally attached servers. prioritization and bandwidth management: eight priority queues per port enable 802.1p class of service / quality of service (cos/qos). flexibility and scalability: each gigabit port offers a choice of copper or fiber media: 1000base-t (via rj45) or 1000base-x (via optional "sfp" small form factor pluggable transceiver modules). management and control: powered by the 3com operating system, the same proven software featured in 3com premium enterprise switches - including the switch 5500, 7700 and 8800