I/O ports and slots

24 RJ-45 autosensing 10/100/1000 ports (IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T); Duplex: 10BASE-T/100BASE-TX: half or full; 1000BASE-T: full only

4 fixed Gigabit Ethernet SFP ports

1 dual-personality (RJ-45 or USB micro-B) serial console port

Supports a maximum of 28 Gigabit Ethernet ports

Physical characteristics

Dimensions

17.44(w) x 10.00(d) x 1.75(h) in (44.3 x 25.4 x 4.45 cm) (1U height)

Weight

6.1 lb (2.77 kg)

Memory and processor

Processor

ARM9E @ 800 MHz, 128 MB flash, 256 MB DDR3 DIMM; packet buffer size: 1.5 MB dynamically allocated

Mounting

Mounts in an EIA-standard 19-inch telco rack or equipment cabinet (rack-mounting kit available); horizontal surface mounting; wall mounting

Performance

IPv6 Ready Certified

100 Mb Latency

< 7.4 µs (LIFO 64-byte packets)

1000 Mb Latency

< 2.3 µs (LIFO 64-byte packets)

Throughput

up to 41.6 million pps (64-byte packets)

Switching capacity

56 Gbps

MAC address table size

16000 entries

Environment

Operating temperature

32°F to 113°F (0°C to 45°C)

Operating relative humidity

15% to 95% @ 104°F (40°C), noncondensing

Non-operating/

-40°F to 158°F (-40°C to 70°C)

Storage temperature

Non-operating/Storage relative humidity

15% to 90% @ 149°F (65°C), noncondensing

Altitude

up to 10,000 ft (3 km)

Acoustic

Power: 26.4 dB, Pressure: 34.0 dB

Electrical characteristics

Frequency

50/60 Hz

Maximum heat dissipation

164 BTU/hr (173.02 kJ/hr)

AC voltage

100-127/200-240 VAC

Current

.6/.4 A

Maximum power rating

48.0 W

Idle power

28.8 W

Safety

UL 60950-1; CAN/CSA 22.2 No. 60950-1; EN 60825; IEC 60950-1; EN 60950-1

Emissions

FCC Class A; EN 55022/CISPR-22 Class A; VCCI Class A

Immunity

Generic

EN 55024, CISPR 24

EN

EN 55024, CISPR 24

ESD

IEC 61000-4-2

Radiated

IEC 61000-4-3

EFT/Burst

IEC 61000-4-4

Surge

IEC 61000-4-5

Conducted

IEC 61000-4-6

Power frequency magnetic field

IEC 61000-4-8

Voltage dips and interruptions

IEC 61000-4-11

Harmonics

EN 61000-3-2, IEC 61000-3-2

Flicker

EN 61000-3-3, IEC 61000-3-3

Management

IMC - Intelligent Management Center; command-line interface; Web browser; configuration menu; Out-of-band management (serial RS-232C or MicroUSB); IEEE 802.3 Ethernet MIB; Repeater MIB; Ethernet Interface MIB

Notes

IEEE 802.3az applies to Gigabit models only; IEEE 802.3at and IEEE 802.3af apply to PoE+ models only. When using SFPs with this product, SFPs with revision 'B' or later (product number ends with the letter 'B' or later, e.g., J4858B, J4859C) are required