Cisco 4900 Switches, Main Features&Model ComparisonCisco Catalyst 4900 Series Switches deliver high-performance, low-latency wire-speedLayer 2 and 3 services in a small form factor (1 or 2 rack units).The Catalyst 4900 Series is ideal for space-constrained deployments.Data Center: Top-of-Rack Server Aggregation Architectural Flexibility: Increased link use without buffer overflow and Layer 2 and 3 support at the access layer as needed Investment Protection: Smooth transition from 10/100/1000 to 10 Gb Ethernet interfaces Simplified Management: Edge switch auto-provisioning
Transport Flexibility: Support for a wide range of storage, high-performance computing, and video applicationsBranch Offices: LAN Collapsed Core and Distribution Aggregation Interface Flexibility: Support for a wide range of Gb Ethernet and 10 Gb Ethernet interfaces High Performance: Up to 320 Gbps forwarding capacity Multilayer Support: Support for main routing protocols and IPv6 in hardware High Availability: Hot swappable redundant power supply and fans Investment Protection: Simple migration from Gb to 10 Gb EthernetNOTE:The latest addition to the Cisco Catalyst 4900 Series is the Cisco Catalyst 4948E.It inherits all the features of the award-winning Catalyst 4948 10Gb Ethernet Switch andalso offers 10Gb Ethernet uplinks, front-to-back airflow, and IPv6 in hardware.The following table compares the features of the Cisco Catalyst4948, 4948 10 GigabitEthernet, 4928 10 Gigabit Ethernet, 4948E, 4948E-F and 4900M Switches.Cisco Catalyst 4900 Series Switches Model Comparison - Hardware FeaturesFeature and Cisco Cisco Cisco Cisco Catalyst CiscoDescription Catalyst Catalyst Catalyst 4900M Catalyst 4948 4948 10 4928 10 4948E
Gigabit Gigabit and Ethernet Ethernet 4948E-FEnvironmentalHeight 1RU 1RU 1RU 2RU 1RUDimension (H x W x 1.71(4.3) 1.71(4.3) 1.71(4.3) 3.5 (8.9) x 17.2 1.75(4.4)D) Inches (cm) x x x (43.7) x 17.9 x 17.3(43. 17.3(43. 17.3(43. (45.5) 17.5(44.4 9) x 9) x 9) x ) x 16.1(40. 16.1(40. 16.1(40. 19.4(49.3 9) 9) 9) )Power Redundancy 1+1 AC 1+1 AC 1+1 AC 1+1 AC or DC 1+1 AC or DC or DC or DC or DCUnit Weight Pounds 16.5 16.5 16.5 34.0 lb (15.4) 19 lbs(Kilograms) (7.48) (7.48) (7.48) (8.62)Hot Swappable Fan Yes Yes Yes Yes YesAvg/Max Power 176/300 212/300 300 300/446 Watts 230/275Consumption Watts Watts Watts WattsAirflow Side to Side to Side to Side to Back Front to Back back back Back
(4948E) Back to Front (4948E-F )Rack Mounting Front Front Front Four Post Rack Front andOptions and Rear and Rear and Rear Side rail Mount Rear Mount Mount Mount High Mount High Perf Performance High Perf Rear Mount Rear Mount MountUplink Optic Types 4 SFP Two X2 Two X2 Eight X2 (10 SFP/SFP optics (10 (10 Gigabit + Gigabit Gigabit Ethernet) optics Ethernet) Ethernet) optics opticsCisco TwinGig No No Yes Yes NoConverter Module (WS-X4908-10GSupport E only)Cisco OneX No No Yes Yes No
Interfaces (SVIs)Active VLANs 4094 4094 2048 4094 4094Multicast Routes 28K 28K 28K 28K 28KSecurity and 32K 32K 32K 128K 32KQuality-of-Service(QoS) HardwareEntriesSwitched Port 2 ingress 2 ingress 2 ingress 8 ingress and 8 8 ingressAnalyzer (SPAN) and 4 and 4 and 4 egress and 8 egress egress egress egressShared Buffer 16 MB 16 MB 16 MB 17.5 MB 17.5 MBCPU 266 MHz 666 MHz 666 MHz 1.3 GHz 1 GHzSynchronous 256 MB 256 MB 256 MB 512 MB 1 GBDynamic RAM(SDRAM)IPv6 Support Software Software Software Hardware Hardware Switched Switched Switched Switched SwitchedUSB Port No No No Yes No
Compact Flash No No No Yes NoMemory SupportSystem Reset Button No No Yes Yes YesPoE: Max. 802.3af 0 0 0 0 0Class 3 Devices(15.4W)PoE: Max. 802.3af 0 0 0 0 0Class 2 Devices(7.3W)1. X2 can be converted to SFP+ using OneX Converter Module.