Produktbeskrivning

The Cisco Catalyst 4948E-F Ethernet Switch is built from the start to deliver class-leading, full-featured server-access switching. The switch offers forty-eight 10/100/1000 Gbps RJ45 downlink ports and four 1/10 Gigabit Ethernet uplink ports and is 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-F, with its advanced multicast support, is optimized for multimedia applications. It supports Protocol Independent Multicast (PIM), Source-Specific Multicast (SSM), and Pragmatic General Multicast (PGM), providing end users with additional scalability to support multimedia applications. Also supported are Internet Group Management Protocol (IGMP) snooping and Multicast Listener Discovery (MLD) snooping in hardware, enhancing performance and reducing network traffic by allowing a switch to dynamically add and remove hosts from a multicast group.

The Cisco Catalyst 4948E-F offers superior per-port QoS features to help ensure that network traffic is classified, prioritized, and scheduled optimally to efficiently manage bandwidth-intensive multimedia and time-sensitive and mission-critical applications. The Cisco Catalyst 4948E-F can classify, monitor, and mark incoming packets, allowing the administrator to differentiate traffic flows and enforce policies. Sharing, shaping, and strict-priority configurations determine scheduling of egress traffic.

 

Egenskaper

Shared-buffer architecture
All Cisco Catalyst 4900 series switches are designed using a simple yet highly scalable architecture. One of the main differences between the Cisco Catalyst 4900 series and other data center platforms is the shared-memory architecture, which reduces the need for latency and jitter causing internal packet copy operations from one buffer space to another. This shared memory space has an additional advantage in multicast environments, in which a single packet may be transmitted from any number of ports without replication of the packet payload internally. Thus, this switch series provides a write-once architecture.

Smart top-of-rack design
Historically, data center design engineers have had to trade off access-layer features such as QoS, network visibility, and security when moving from an end-of-row (EoR) to a ToR data center design. The Cisco Catalyst 4948E-F offers the same features found on large EoR data center switches in a 1RU form factor optimized for ToR deployments.

Predictable performance and scalability
The Cisco Catalyst 4948E-F, with its advanced multicast support, is optimized for multimedia applications. It supports Protocol Independent Multicast (PIM), Source-Specific Multicast (SSM), and Pragmatic General Multicast (PGM), providing end users with additional scalability to support multimedia applications. Also supported are Internet Group Management Protocol (IGMP) snooping and Multicast Listener Discovery (MLD) snooping in hardware, enhancing performance and reducing network traffic by allowing a switch to dynamically add and remove hosts from a multicast group.

Intelligent network services with QoS and sophisticated traffic management
The Cisco Catalyst 4948E-F offers superior per-port QoS features to help ensure that network traffic is classified, prioritized, and scheduled optimally to efficiently manage bandwidth-intensive multimedia and time-sensitive and mission-critical applications. The Cisco Catalyst 4948E-F can classify, monitor, and mark incoming packets, allowing the administrator to differentiate traffic flows and enforce policies. Sharing, shaping, and strict-priority configurations determine scheduling of egress traffic.

 

Teknisk specifikation

Typ av enhet	Switch - 48 portar - L3 - Administrerad
Modell	Bakre till främre luftflödet rackmonterbar 1U
Undertyp	Gigabit Ethernet
Portar	48 x 10/100/1000 + 4 x 10 Gigabit SFP+
Prestanda	Växlingskapacitet: 176 Gbps IPv4-omkoppling: 131 Mpps IPv6-omkoppling: 110 Mpps
Kapacitet	Aktiva VLAN: 4094 QoS-maskinvaruposter: 32000 Spanning Tree Protocol-instanser: 4094 Switchade virturlla gränssnitt (SVIs): 4094
MAC Address Table Size	55 k poster
Nätverksprotokoll	RIP-1, RIP-2, EIGRP, IGMPv2, HSRP, IGMP, DVMRP, VRRP, OSPFv2, PIM-SM, IGMPv3, OSPFv3, PIM-SSM, statisk IPv4-routing, statisk IPv6-routing, PBR (policy-based routing), RIPng, MLDv2, MLD
Protokoll för administration på distans	SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, HTTPS, TFTP, SSH, SSH-2, CLI
Verifieringsmetod	Secure Shell (SSH), RADIUS, TACACS+, Secure Shell v.2 (SSH2)
Funktioner	Hot-swap-byte av modul, Nivå 3-växling, Nivå 2-växling, DHCP-stöd, auto-negotiation, VLAN-stöd, IGMP snooping, trafikbegränsning, MAC-adressfiltrering, Broadcast Storm Control, stöd för IPv6, Multicast Storm Control, Non-Stop Forwarding (NSF), stöd för STP (Spanning Tree Protocol), Per-VLAN Spanning Tree (PVST), tunnelering, DHCP-snooping, stöd för Dynamic Trunking Protocol (DTP), stöd för Port Aggregation Protocol (PAgP), stöd för Access Control List (ACL), Quality of Service (QoS), Jumbo Frames-support, Virtual Route Forwarding-Lite (VRF-Lite), MLD-snooping, Dynamic ARP Inspection (DAI), Time Domain Reflectometry (TDR), Per-VLAN Spanning Tree Plus (PVST+), EIGRP Stub Routing
Standarder som följs	IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3ah, IEEE 802.1ag
Processor	1: 1 GHz
RAM	1 GB SDRAM
Statusindikatorer	Portstatus, strömförsörjning, länk OK, system, länk/akvititet

Gränssnitt	48 x 1000Base-T RJ-45 4 x SFP+

Nätdel	Intern strömförsörjning - hot-plug
Installerat antal	1
Max antal som stöds	2
Redundant ström	Tillval
Schema för redundant ström	1+1 (med valfritt nätaggregat)
Nätspänning	AC 120/230 V (50/60 Hz)

MTBF (genomsnittstid mellan fel)	149,261 timmar
Standarder som följs	NEBS nivå 3, ETSI, CISPR 22 klass A, EN 61000-3-2, VCCI klass A ITE, EN 61000-3-3, EN55024, EN50082-1, AS/NZ 3548 Class B, EMC, ICES-003 klass A, RoHS, FCC CFR21 Part 1040, UL 60950-1, IEC 60950-1, EN 60950-1, FCC Part 15 A, IEC 60825-1, CSA C22.2 No. 60950-1, EN 60825-1, EN 55022 Class A, EN 300 386

Medföljande programvara	Cisco IOS IP Base

Bredd	44.4 cm
Djup	49.3 cm
Höjd	4.4 cm
Vikt	8.6 kg

Service och support	Begränsad garanti - utbyte av delar i förväg - 90 dagar - svarstid: 10 dagar

Min temperatur vid drift	0 °C
Max temperatur vid drift	40 °C
Luftfuktighet vid drift	10 - 90 % (icke-kondenserade)
Min temperatur vid förvaring	-40 °C
Max temperatur vid förvaring	75 °C