Juniper EX4300-24P Datenblatt PDF herunterladen (Seite 6)

EX4300 Speciﬁcations

Physical Speciﬁcations

Backplane

• 320 Gbps Virtual Chassis interconnect to combine up to 10 units

as a single logical device

Uplink Module Options

• Dual-mode 4-port 10GbE SFP+/4-port GbE SFP module with

pluggable SFP+/SFP optics

Power Options

• Power supplies: Autosensing; 100-120 V/200-240 V; AC 350 W

AFO, 350 W AFI, 715 W AFO, and 1,100 W AFO dual load-sharing

hot-swappable internal redundant power supplies

• Maximum current inrush: 50 amps

• DC power supply: 550 W DC AFO and 550 W DC AFI; input voltage

range 36-72 V; dual input feed, dual load-sharing hot-swappable

internal redundant power supplies

• Minimum number of PSUs required for fully loaded chassis: 1 per

switch

Dimensions (W x H x D)

• 17.41 x 1.72 x 16.43 in (44.21 x 4.32 x 41.73 cm)

• Desktop installation width noted above, rack-mount width is

17.5 in (44.5 cm)

• Height: 1 rack unit (1 U)

System Weight

• EX4300 switch (no power supply or fan module): 13 lb (5.9 kg)

• EX4300 switch (with single power supply and two fan modules):

16.1 lb (7.3 kg)

• 350 W AC power supply: 2.4 lb (1.1 kg)

• 715 W AC power supply: 2.4 lb (1.1 kg)

• 1100 W AC power supply: 2.4 lb (1.1 kg)

• 550 W DC power supply: 2.4 lb (1.1 kg)

• SFP+ uplink module: 0.44 lb (0.2 kg)

• Fan module: 0.33 lb (0.15 kg)

Environmental Ranges

• Operating temperature: 32° to 113° F (0° to 45° C)

• Storage temperature: -40° to 158° F (-40° to 70° C)

• Operating altitude: up to 10,000  (3,049 m)

• Non-operating altitude: up to 16,000  (4,877 m)

• Relative humidity operating: 10% to 85% (noncondensing)

• Relative humidity non-operating: 0% to 95% (noncondensing)

Cooling

• Field-replaceable fans: 2

• Switch remains operational even if one fan fails

• Airﬂow: PSU-7.5 CFM, fan-22 CFM

• Total maximum airﬂow throughput with two power supplies:

59 CFM

Hardware Speciﬁcations

Switching Engine Model

• Store and forward

Memory

• DRAM: 2 GB with Error Correcting Code (ECC)

• Flash: 2 GB

CPU

• 1.5 GHz Dual-Core PowerPC CPU

GbE Port Density per System

• 24P/24T: 28 (24 host ports + four-port 1/10GbE uplink module)

• 48P/48T: 52 (48 host ports + four-port 1/10GbE uplink module)

• 10GbE port density per system (all models): 4 (uplink module)

• 40GbE port density per system (all models): 4

Supported Optics

• GbE SFP optic/connector type: LC SFP ﬁber supporting SX

(multimode), LX (single-mode)

• 10GbE SFP+ optic/connector type: 10GbE SFP+ LC connector, SR

(multimode), USR (multimode), LR (single-mode), ER (single-

mode), LRM (multimode), and DAC (direct-attach copper)

• 40 GbE QSFP+ optic/connector type: 40GbE QSFP+ LC connector

type, SR (multimode), DAC (direct-attach copper)

Physical Layer

• Time Domain Reﬂectometry (TDR) for detecting cable breaks and

shorts: 24P/24T and 48P/48T only

• Auto medium-dependent interface/medium-dependent interface

crossover (MDI/MDIX) support: 24P/24T and 48P/48T only (all

ports)

• Port speed downshi/setting maximum advertised speed on

10/100/1000BASE-T ports: 24P/24T and 48P/48T only, on all

ports

• Digital optical monitoring for optical ports

Packet Switching Capacities (Maximum with 64 Byte Packets)

• 24P/24T: 448 Gbps

• 48P/48T: 496 Gbps

Soware Speciﬁcations

Security

• MAC limiting (per port and per VLAN)

• Allowed MAC addresses conﬁgurable per port

• Dynamic ARP inspection (DAI)

• IP source guard

• Local proxy ARP

• Static ARP support

• DHCP snooping

• Captive portal

• Persistent MAC address conﬁgurations

• Distributed denial of service (DDoS) protection (CPU control path

ﬂooding protection)

Layer 2/Layer 3 Throughput (Mpps) (Maximum with

64 Byte Packets)

• 24P/24T: 333 Mpps (wire speed)

• 48P/48T: 369 Mpps (wire speed)

Layer 2 Switching

• Maximum MAC addresses per system: 64,000

• Jumbo frames: 9,216 Bytes

• Number of VLANs: 4,093

• Virtual Spanning Tree (VST) instances: 510

• Port-based VLAN

• MAC-based VLAN

• Voice VLAN

• Physical port redundancy: Redundant trunk group (RTG)

• Compatible with Per-VLAN Spanning Tree Plus (PVST+)

• Routed VLAN Interface (RVI)

• Uplink Failure Detection (UFD)

• ITU-T G.8032 Ethernet Ring Protection Switching

• IEEE 802.1AB: Link Layer Discovery Protocol (LLDP)

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