3Com 3CR17250-91 Data Sheet - Page 2

3Com® Switch 5500G 10/100/1000 Family KEY BENEFITS (CONTINUED) HIGH AVAILABILITY FOR CRITICAL APPLICATIONS XRN technology, a 3Com innovation, enables multiple interconnected and stackable Layer 3 switches to be managed as a single entity. Stack and switching fabric setup is automated and provides a high level of resiliency and continuous availability without adding to network complexity. After configuration, all switches actively share routing intelligence and network loads-eliminating the wasted bandwidth and added expense of a passive standby unit. Ultra-fast failover recovery automatically redistributes traffic among the other active units in case a switch becomes disconnected or fails. MULTILAYER SECURITY The Switch 5500G family provides integrated and distributed security enforcement that can be managed from a central location. Access control lists (ACLs) help protect network resources from unauthorized access and data corruption. User-based authentication and DES 56/168-bit† encryption help secure Layer 3 protocols and management controls such as SSH v2 and SNMP. IEEE 802.1X RADIUS/TACACS+ network login and RADIUS Authenticated Device Access (RADA) enforce access control at the network edge. PRIORITY FOR CONVERGED BUSINESS TRAFFIC Next-generation traffic prioritization features-including advanced policy-based Class of Service/Quality of Service (CoS/QoS), eight priority queues, committed access rates, bandwidth limiting and filtering and more-identify and optimize delay-sensitive traffic such as voice and video. To help assure this optimization, switches can be configured to automatically isolate voice traffic from 3Com and other IP telephony systems within a voice-dedicated VLAN. UNIQUE AC/DC POWERED OPERATION 3Com Switch 5500G products are the first stackable switches to support multiple power schemes right out of the box, with a choice of AC, AC and DC, or DC operation. Select models also support IEEE 802.3af PoE, enabling power to be injected out to the edge of the network without the need to install additional wires or upgrade existing power supplies. The customer-swappable power supply unit enables non-PoE models to be easily upgraded to PoE capability. An available Redundant Power System can provide supplemental N+1 power across all PoE ports in the system. POWERFUL, UNIFIED MANAGEMENT The 3Com Operating System employed in the Switch 5500G is the same powerful software used in other 3Com enterprise stackable switches as well as in the 3Com Switch 8800 and Switch 7700 modular switch families and the Router 6000, 5000 and 3000 families. This makes for an easy mix-and-match of networking technologies with consolidated administration over the entire network, as well as edge-to-core visibility and control when using 3Com management applications such as 3Com Enterprise Management Suite and 3Com Network Director. † 168-bit encryption not available in all countries. Refer to www.3com.com for details. 2