N3K-C31128PQ-10GE is the Nexus 31128PQ, 96 SFP+ ports, 8 QSFP+ ports, 2RU switch. The Cisco Nexus 31128PQ Switch is a dense, high-performance Layer 2 and 3, 10- and 40-Gbps switch that is a member of the Cisco Nexus 3100 switches. The Nexus 3100 switches are the second-generation Cisco Nexus 3000 series switches and offer improved port density, scalability, and features compared to the first-generation switches. The Cisco Nexus 31128PQ comes in a compact two-rack-unit (2RU) form factor and runs the industry-leading Cisco NX-OS Software operating system, providing customers comprehensive features and functions that are widely deployed. It supports both forward and reverse (port side exhaust and port side intake) airflow schemes with AC and DC power inputs. The Cisco Nexus 31128PQ is well suited for data centers that require a cost-effective, power-efficient line-rate Layer 2 and 3 access or leaf switch.
N3K-C31128PQ-10GE Specification
|
| Physical |
· 2RU fixed form-factor switch
· 8 QSFP+ ports
· 96 SFP+ ports
· 2 redundant power supplies
· 2 redundant (1+1) fans (2 rotors per fan)
· Management, console, and 2 USB flash-memory ports |
| Performance |
· 2.5 Tbps switching capacity
· Forwarding rate up to 1.4 bpps
· Line-rate traffic throughput (both Layer 2 and 3) on all ports
· Configurable maximum transmission units (MTUs) of up to 9216 bytes (jumbo frames) |
| Hardware tables and scalability |
Number of MAC addresses |
288,000 |
| Number of VLANS |
4096 |
| Number of spanning-tree instances |
· RSTP: 512
· MSTP: 64 |
| Number of access control list (ACL) entries |
4000 ingress
1000 egress |
| Routing table |
· 16,000 prefixes and 16,000 host entries
· 8000 multicast routes |
| Number of EtherChannels |
64 (with vPC) |
| Number of ports per EtherChannel |
16 |
| Buffer size |
12 MB shared |
| Boot flash memory |
64 GB SSD |
| Power |
Frequency |
50 to 60 Hz |
| Power supply types |
· AC (forward and reversed airflow)
· DC (forward and reversed airflow) |
| Typical operating power |
148 watts (W) |
| Maximum power |
413 watts (W) |
| AC PSUs
· Input voltage
· Frequency
· Efficiency |
· 100 to 240 VAC
· 50 to 60 Hz
· 89 to 91% at 220V |
| DC PSUs
· Input voltage
· Maximum current (PSU output – System input)
· Efficiency |
· -40 to -72 VDC
· 78A
· 85 to 88% |
| Power-supply efficiency |
89 to 91% at 220V |
| Typical heat dissipation |
505 BTU/hr |
| Maximum heat dissipation |
1409 BTU/hr |
| Cooling |
· Forward and reversed airflow schemes
◦ Forward airflow: Port-side exhaust (air enters through fan tray and power supplies and exits through ports); supported with AC and DC power supplies
◦ Reversed airflow: Port-side intake (air enters through ports and exits through fan tray and power supplies); supported with AC power supply only
· Redundant fans
· Hot swappable (must swap within 1 minute) |
| Sound |
Measured sound power (maximum)
· Fan speed: 40% duty cycle
· Fan speed: 70% duty cycle
· Fan speed: 100% duty cycle |
· 66.1 dBA
· 70.6 dBA
· 76.9 dBA |
| Environment |
Dimensions (height x width x depth) |
3.39 x 17.40 x 23.70 in. (8.6 x 44.2 x 60.2 cm) |
| Weight |
22.2 lb (10.1 kg) |
| Operating temperature |
32 to 122°F (0 to 50°C) |
| Storage temperature |
-40 to 158°F (-40 to 70°C) |
| Operating relative humidity |
· 10 to 85% noncondensing
· Up to 5 days at maximum (85%) humidity
· Recommend ASHRAE data center environment |
| Storage relative humidity |
5 to 95% noncondensing |
| Altitude |
0 to 10,000 ft (0 to 3000m) |
