Cisco 4900 Switches, Main Features& Model Comparison

Cisco Catalyst 4900 Series Switches deliver high-performance, low-latency wire-speed Layer 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

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Investment Protection: Smooth transition from 10/100/1000 to 10 Gb Ethernet interfaces

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Simplified Management: Edge switch auto-provisioning 

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Transport Flexibility: Support for a wide range of storage, high-performance computing, and video applications

Branch Offices: LAN Collapsed Core and Distribution Aggregation
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Interface Flexibility: Support for a wide range of Gb Ethernet and 10 Gb Ethernet interfaces

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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 Ethernet

NOTE: 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 and also offers 10Gb Ethernet uplinks, front-to-back airflow, and IPv6 in hardware.

The following table compares the features of the Cisco Catalyst 4948, 4948 10 Gigabit

Ethernet, 4928 10 Gigabit Ethernet, 4948E, 4948E-F and 4900M Switches.
Cisco Catalyst 4900 Series Switches Model Comparison - Hardware Features Feature Description and Cisco Catalyst Cisco Catalyst Cisco Catalyst Cisco 4900M Catalyst Cisco Catalyst 

4948

4948 10 4928 10 Gigabit Ethernet Gigabit Ethernet

4948E and 4948E-F

Environmental Height 1RU 1RU 1.71(4.3) x 17.3(43. x 9) 16.1(40. 9) AC 1+1 or DC 16.5 (7.48) Yes 212/300 Watts to Side 1RU 1.71(4.3) x 17.3(43. x 9) 16.1(40. 9) AC 1+1 or DC 16.5 (7.48) Yes 300 Watts to Side to Side to Back Yes 300/446 Watts 34.0 lb (15.4) AC 1+1 AC or DC x 2RU 1RU

Dimension (H x W x 1.71(4.3) D) Inches (cm) x 17.3(43. 9) 16.1(40. 9) Power Redundancy 1+1 or DC Unit Weight Pounds 16.5 (Kilograms) Hot Swappable Fan Avg/Max Consumption Airflow (7.48) Yes

3.5 (8.9) x 17.2 1.75(4.4) (43.7) (45.5) x 17.9 x 17.5(44.4 ) x

19.4(49.3 ) 1+1 or DC 19 (8.62) Yes 230/275 Watts Front to lbs AC

Power 176/300 Watts Side 

Back

back

back

Back (4948E) Back Front (4948E-F ) to

Rack Options

Mounting Front

Front

Front

Four Post Rack Front and Rear Mount High Perf Rear Mount

and Rear and Rear and Rear Side rail Mount Mount Mount High Perf Rear Mount Mount High Performance Mount

Uplink Optic Types

4

SFP Two (10

X2 Two (10

X2 Eight Gigabit

X2

(10 SFP/SFP +

optics

Gigabit

Gigabit

Ethernet) optics

Ethernet) Ethernet) optics Cisco Converter Support TwinGig No Module No optics Yes Yes (WS-X4908-10G E only) No 

Cisco Converter

OneX No Module

No

Yes

Yes

No

Support (X2 to SFP+) Optics LH, ZX, CWDM SX, LR, CX4, LR, CX4, X2: LX4, SR, LX4, SR, LX4, ER, LRM, ZR, DWDM Modular Slots Ports Maximum 10/100/1000 Ports Maximum Gigabit 4 0 28 32 TwinGig Converter Module) Maximum 10 Gigabit 0 0 0 16 0 (Cisco 4 48 48 0 40 48 Half-Card 0 0 0 2 0 ER, LRM LRM, DWDM SFP+: SR LR, SR, CX4, CWDM, ER, DWDM, ZR, SR, LRM, CX4 LR,

Ethernet (Fiber) Ports 

Ethernet (10GBase-T) Ports Maximum 10 Gigabit 0 Ethernet (fiber) Ports 2 (X2) 2 (X2)1 24 (X2) 1 4 (SFP+)

Performance/Scalabil ity Switching Capacity 96 Gbps 136 Gbps Throughput 72 mpps 102 mpps 72 Mpps 250 IPv4 125 IPv6 Routes Supported MAC Addresses 32K 32K 32K 55K 4094 32K 55K 4094 256K 55K 4094 mpps mpps for 131 mpps for IPv4 for 110 mpps for IPv6 57K 55K 4094 96 Gbps 320 Gbps 176 Gbps

Per VLAN Spanning 4094 Tree (PVST) Protocol and VLAN IDs 

Switched

Virtual 2000

2000

2000

4094

4094

Interfaces (SVIs) Active VLANs Multicast Routes Security Quality-of-Service (QoS) Entries Switched Analyzer (SPAN) Port 2 ingress 2 ingress 2 ingress 8 ingress and 8 8 ingress and egress Shared Buffer CPU Synchronous Dynamic (SDRAM) IPv6 Support Software Switched Software Switched Software Switched Hardware Switched Hardware Switched RAM 16 MB 266 MHz 256 MB 4 and egress 16 MB 666 MHz 256 MB 4 and egress 16 MB 666 MHz 256 MB 17.5 MB 1.3 GHz 512 MB 4 egress and egress 17.5 MB 1 GHz 1 GB 8 Hardware 4094 28K and 32K 4094 28K 32K 2048 28K 32K 4094 28K 128K 4094 28K 32K 

USB Port Compact

No Flash No

No No

No No

Yes Yes

No No

Memory Support System Reset Button PoE: Class (15.4W) PoE: Class (7.3W) Max. 2 802.3af 0 Devices 0 0 0 0 Max. 3 No No 0 Yes 0 Yes 0 Yes 0

802.3af 0 Devices

1. X2 can be converted to SFP+ using OneX Converter Module.