The Catalyst 4900 Series are a compact form factor (1-2RU) family of switches providing wire speed GE and 10 GBE connectivity and services for top of rack server aggregation in the datacenter and for space constrained branch collapsed core/distribution LAN aggregation. The Catalyst 4900 Series includes six Layer 2 & 3 fixed-configuration switches.
The Cisco Catalyst 4900 Series delivers wirespeed throughput on all ports from 96 Gbps to 320 Gbps with low-latency for data-intensive applications. Switching performance is guaranteed regardless of the number of route entries or Layer 3 and 4 services enabled. The hardwarebased Cisco Express Forwarding (CEF) routing architecture allows for increased scalability and performance.
The Cisco Catalyst 4900 Series offers redundant hot-swappable internal AC or DC power supplies for non-stop operation. The 1+1 power supply design provides A-to-B failover when power supplies are connected to different circuits. AC and DC power supplies can be mixed in the same unit for maximum deployment flexibility. The Cisco Catalyst 4900 Series also features a hot-swappable fan tray with four redundant fans for additional serviceability and availability