Cisco WS-C3550-12G Switch Guide - Page 178

Fixed Switches: Cisco Catalyst 4900 Series Cisco Catalyst 4900 Series Spotlight Wire-speed Performance 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. Exceptional Reliability 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. Product Overview Product Number Product Description Catalyst 4900 Switches WS-C4948E 4948E, LB S/W, 48-port 10/100/1000+4*1/10 GE (SFP/SFP+) Ports, no Power Supply, Front-to-back Airflow WS-C4948E-S 4948E, IPB S/W, 48-port 10/100/1000+4*1/10 GE (SFP/SFP+) Ports, AC Power Supply, Front-to-back Airflow WS-C4948E-E 4948E, ES Image, 48-port 10/100/1000+4*1/10 GE (SFP/SFP+) Ports, AC Power Supply, Front-to-back Airflow WS-C4948E-F 4948E-F, LB S/W, 48-port 10/100/1000+4*1/10 GE (SFP/SFP+) Ports, no Power Supply, Back-to-front Airflow WS-C4948E-F-S Base System with 8-port (X2) and 2 Half Slots WS-C4948E-F-E 4 Port Wire Speed 10 GBE Card for 4900M WS-C4900M 8 Port 2:1 10 GBE Card for 4900M WS-X4904-10GE 20 Port 10/100/1000 RJ-45 Card for 4900M WS-X4908-10GE 8-port 2:1 10GBASE-T Card for 4900M WS-X4920-GB-RJ45 4948, Optional S/W, 48-port 10/100/1000+2*10 GBE (X2), no Power Supply WS-X4908-10G-RJ45 4948, Optional S/W, 48-port 10/100/1000+2*10 GBE (X2), no Power Supply WS-C4948-10GE 4948, IPB S/W, 48-port 10/100/1000+2*10 GBE (X2), 1 AC Power Supply WS-C4948-10GE-S 4948, ES Image, 48-port 10/100/1000+2*10 GBE (X2), 1 AC Power Supply WS-C4948-10GE-E 4948, ES Image, 48-port 10/100/1000+2*10 GBE (X2), 1 AC Power Supply WS-C4928-10GE 4928, Optional S/S, 28-port 1000Base-X (SFP) +2*10 GBE (X2), no Power Supply WS-C4948-S 4948, IPB S/W, 48-port 10/100/1000+4 SFP, 1 AC Power Supply WS-C4948-E 4948, ES S/W 48-port 10/100/1000+4 SFP, 1 AC Power Supply WS-C4948 4948, Optional S/W, 48-port 10/100/1000+4 SFP, no Power Supply 176