Cisco Catalyst C4948E 48x RJ45 Port 4x SFP+ Port Front-to-Back Air-Cooled Ethernet Switch 800-38481-01 WS-C4948E V08. This switch offers forty-eight 10/100/1000-Gbps RJ45 downlink ports and four 1 and 10 Gigabit Ethernet uplink ports. The switches are designed to simplify data center architecture and operations by offering service provider-grade hardware and software in a one-rack-unit (1RU) form factor optimized for full-featured top-of-rack (ToR) data center deployments.

Cisco Part Number: WS-C4948E V08
Model Number: C4948E
Compatible Part Numbers: 800-38481-01







Features:

Scalability and Performance
- Nonblocking server-to-server traffic with 176-Gbps aggregate throughput
- Ease of migration from Gigabit Ethernet to 10 Gigabit Ethernet upstream with support for SFP and SFP+ optics
- Large buffers optimized to handle microbursts with 17.5 MB of centralized buffering, helping ensure that business-critical packets are not lost due to insufficient buffering
- Active queue management through dynamic buffer limiting for TCP throughput optimizations
- Investment protection through data center design with dual-stack IP Versions 4 and 6 (IPv4 and v6) support
- Advanced quality of service (QoS) with eight configurable queues for each port
- Data center server virtualization support for larger Layer 2 domains with scalable MAC addresses
- Support for a wide variety of optics connecting to the aggregation layer
- Front-to-back airflow

Enhanced Manageability
- Pay as you grow with software feature packages, from Layer 2 only (LAN Base) to full Layer 3 capability (Enterprise Services)
- Reduced operating expenses (OpEx) with tools such as AutoInstall and Cisco IOS Embedded Event Manager (EEM) that enable immediate availability
- Data center automation with IP service-level agreement (SLA) and Smart Call Home
- Data center optimization with true front-to-back and back-to-front airflow, including power supply cooling
- Enhanced application visibility with smart flow logging
- Enhanced manageability through eight bidirectional Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) sessions
- Network visibility through Cisco NetFlow-Lite (future support)

Resiliency
- 1+1 AC or DC power supplies and hot-swappable fan tray with redundant fans for high availability for mission-critical applications
- Optimized forwarding across all four uplinks with equal-cost multipath (ECMP) load sharing
- Improved resiliency with protection from attacks with access control lists (ACLs), Control Plane Policing (CoPP), Address Resolution Protocol (ARP) inspection, and Dynamic Host Configuration Protocol (DHCP) snooping
- Active queue management using dynamic buffer limiting (DBL) for increased security and network control

Includes:

- 2x Rackmount Kit + Screws 700-30093-04
- 2x 8.2ft (2.5m) N5000 AC Power Cable (6A, 250V) 37-0910-01
- 1x Disposable Wrist Strap NS-DW11
- 1x DB9 to RJ45 Console Adapter 74-0495-01
- 2x Plastic Cable Management Pieces + Screws
- 1x Grounding Lug + Screws
- 4x 48-0441-01, 8x 48-3062-01, and 4x 48-0440-01 screws
- 1x PSU Power Supply Blank Cover 800-25264-01
- 2x PWR-C49E-300AC-R Power Supplies
- 1x WS-X4993 Hot-Swappable Fan
- 1x Cisco Catalyst C4948E Switch







Specifications:

Height: 1RU
Average and maximum power consumption (in watts [W]): 230W average, 275W maximum
Airflow: Front-to-back
Uplink optic types: SFP and SFP+
Optics: CWDM, DWDM, SR, LR, LRM, and CX4

Ports
- Maximum 10/100/1000-Gbps ports: 48
- Maximum Gigabit Ethernet (fiber) ports: 4

Performance and Scalability
- Switching capacity: 176 Gbps
- Throughput: 131 mpps for IPv4, 110 mpps for IPv6
- Routes supported: 57,000
- MAC addresses: 55,000
- Per-VLAN Spanning Tree (PVST) Protocol and VLAN IDs: 4094
- Multicast routes: 28,000
- Security and quality-of-service (QoS) hardware entries: 32,000
- Switched Port Analyzer (SPAN): 8 ingres and 8 egress
- Shared Buffer: 17.5 MB
- CPU: 1.0 GHz
- SDRAM: 1.0 Gb
- Mulitlayer Switching: LAN Base, IP Base, and Enterprise Services options
- IPv6 support: Hardware switched

Industry standards
- Ethernet: IEEE 802.3 and 10BASE-T
- Fast Ethernet: IEEE 802.3u, 100BASE-TX, and 100BASE-FX
- Gigabit Ethernet: IEEE 802.3z and 802.3ab
- IEEE 802. 1D Spanning Tree Protocol
- IEEE 802.1w rapid reconfiguration of spanning tree
- IEEE 802. 1s multiple VLAN instances of spanning tree
- IEEE 802.3 ad LACP
- IEEE 802. 1p CoS prioritization
- IEEE 802.1Q VLAN
- IEEE 802. 1x user authentication
- RMON I and II standards

Regulatory compliance
Products bear CE Marking, indicating compliance with the 89/336/EEC and 73/23/EEC directives, which include the safety and EMC standards listed here.

Safety
- UL 60950-1
- CAN/CSA-C22.2 No. 60950-1
- EN 60950-1
- IEC 60950-1
- AS/NZS 60950
- IEC 60825-1
- IEC 60825-2
- EN 60825-1
- EN 60825-2
- 21 CFR 1040

EMC
- FCC Part 15 (CFR 47) Class A
- ICES-003 Class A
- EN55022 Class A
- CISPR22 Class A
- AS/NZS 3548 Class A
- VCCI Class A
- EN55024
- ETS300 386
- EN50082-1
- EN61000-3-2
- EN61000-3-3

Network Equipment Building Standards (NEBS)
- GR-63-Core NEBS Level 3
- GR-1089-Core NEBS Level 3

ETSI
- ETS 300 019 Storage Class 1.1
- ETS 300 019 Transportation Class 2.3
- ETS 300 019 Stationary Use Class 3.1