The Catalyst 4000 series provides an advanced high-performance enterprise switching solution optimized for wiring closets with up to 96 users and data center server environments that require up to 36 Gigabit Ethernet ports. New FlexiMod uplinks support up to eight 100BaseFX riser connections with EtherChannel benefits. The Catalyst 4000 series provides intelligent Layer 2 services leveraging a multiGigabit architecture for 10/100/1000-megabit Ethernet switching. The modular three-slot Catalyst 4003 system leverages the software code base from the industry-leading Catalyst 5500/5000 series in order to provide the rich and proven feature set that customers demand in the wiring closet for true end-to-end enterprise networking solutions.

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