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Cisco Catalyst 4948E Managed L2/L3 Gigabit Ethernet (10/100/1000) 1U Grijs (WS-C4948E-E)

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48x 10/100/1000(RJ45)+4x10GbE(SFP+), L2/L3, 1RU, Enterprise Service IOS, AC p/s, 1000 MHz, 1024 MB, 8.62 kg

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Cisco Catalyst 4948E. Switch type: Managed, Switch-laag: L2/L3. Type basis-switching RJ-45 Ethernet-poorten: Gigabit Ethernet (10/100/1000), Copper ethernet cabling technologie: 1000BASE-T, 100BASE-TX, 10BASE-T. Netwerkstandaard: IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3u, IEEE 802.. MAC-adrestabel: 55000 entries, Switchingcapaciteit: 176 Gbit/s. Formaat: 1U, Kleur van het product: Grijs, Veiligheid: UL 60950-1, CAN/CSA-C22.2 No. 60950-1, EN 60950-1, IEC 60950-1, AS/NZS 60950, IEC 60825-1, IEC 60825

The Cisco Catalyst® 4948E and 4948E-F Ethernet Switches are the Cisco Catalyst 4900 Series data center switches built from the start to deliver best-in-class, full-featured server-access switching. The switches include identical features except that the Cisco Catalyst 4948E offers front-to-back cooling, and the Cisco Catalyst 4948E-F offers back-to-front cooling. Each 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.

The Cisco Catalyst 4948E and 4948E-F build on the advanced technology of the Cisco Catalyst 4948 Switches, the most widely deployed ToR switch in the industry, with more than 10 million ports deployed worldwide. The Cisco Catalyst 4948E and 4948E-F double the uplink bandwidth and offer true front-to-back and back-to-front airflow with no side or top venting. The airflow direction is controlled by the changing of fans. Optional front-to-back and back-to-front airflow management reduces data center operating costs by providing strict hot-aisle and cold-aisle isolation.

Hot-aisle and cold-aisle deployment remains the widely adopted best practice for data center cabinet layouts today. Networking switches and computing servers mounted in a single cabinet need to maintain the separation of the inlet cold air and the exhaust hot air for efficient use of cooling resources. The Cisco Catalyst 4948E and 4948E-F switches provide the option of front-to-back airflow (Cisco Catalyst 4948E) and back-to-front airflow (Cisco Catalyst 4948E-F) for ToR switch deployments.

Exceptional reliability and serviceability are delivered with optional internal AC and DC 1+1 hot-swappable power supplies and a hot-swappable fan tray with redundant fans

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 and back-to-front airflow options

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 suply 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)


- 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

Cisco IOS Software

Cisco IOS Software is a proven network OS that offers best-in-class availability, manageability, and scalability.

The Cisco Catalyst 4948E and 4948E-F support three levels of Cisco IOS Software. The basic level is LAN Base, developed for deployments that require data center-class hardware along with Layer 2 switching but not advanced features such as routing and Cisco IOS EEM. The next level of software is IP Base; this level supports static routes, Routing Information Protocol (RIP) Versions and 2, and Enhanced Interior Gateway Routing Protocol Stub (EIGRP-Stub) for limited routing. The top level of software is Enterprise Services; this level adds support for advanced routing protocols such as Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), Intermediate System-to-Intermediate System (IS-IS) Protocol, and EIGRP.


Rack-montage Ja
Kleur van het product Grijs
Formaat 1U
Veiligheid 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
Elektromagnetische compatibiliteit FCC, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI, EN55024, ETS300 386, EN50082-1, EN61000-3-2, EN61000-3-3


Switch-laag L2
Switch type Managed
Web-gebaseerd management Ja
Multicast-ondersteuning Ja
Quality of Service (QoS) Ja
Switch-laag L2/L3
ARP-inspectie Ja
Traffic shaping Ja

Poorten & interfaces

Aantal basis-switching RJ-45 Ethernet-poorten 48
Type basis-switching RJ-45 Ethernet-poorten Gigabit Ethernet (10/100/1000)
Koperen ethernetbekabelingstechnologie 1000BASE-T, 100BASE-TX, 10BASE-T
Aantal moduleslots SPF+ 4


Netwerkstandaard IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3u, IEEE 802.3z
IGMP snooping Ja
10G support Ja
VLAN=ondersteuning Ja
Spanning tree protocol Ja


Ondersteunde data-overdrachtsnelheden 10/100/1000 Mbps
MAC-adrestabel 55000 entries
Switchingcapaciteit 176 Gbit/s
Throughput 110/130 Mpps
Aantal VLANs 4096
Aantal wachtrijen 8
Max. overdrachtssnelheid 176 Gbit/s


Access Control List (ACL) Ja
MAC adres filtering Ja


Stapelbaar Ja
Type processor Ja
Packet buffergeheugen 17,5 MB
Intern geheugen 1024 MB
Mean time between failures (MTBF) 145422 uur
Frequentie van processor 1000 MHz


AC invoer voltage 90-264 V
AC invoer frequentie 50/60 Hz
Stroomverbruik 230 W
Vermogensverbruik (max) 275 W
Vermogenstoevoer inclusief Ja

Minimale systeemeisen

Minimale RAM 1024 MB

Eisen aan de omgeving

Temperatuur, in bedrijf 0 - 40 °C
Temperatuur bij opslag -40 - 75 °C
Relatieve luchtvochtigheid, in bedrijf 10 - 90 procent
Hoogte, in bedrijf -60 - 2000 m
Warmtedissipatie 1173 BTU/h

Gewicht en omvang

Breedte 44,4 cm
Diepte 49,3 cm
Hoogte 4,4 cm
Gewicht 8,62 kg

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