N3K-C31108PC-V

N3K-C31108PC-V Specification

Physical

●  1RU fixed form factor

●  Cisco Nexus 31108PC-V

◦    48 SFP ports support 1 and 10 Gigabit Ethernet

◦    6 QSFP28 ports support 4 x 10 Gigabit Ethernet or 40 Gigabit Ethernet each or 100 Gigabit Ethernet.

●  Redundant fans (3+1)

●  2 redundant power supplies

●  Management, console, and USB flash-memory ports

Performance

●  2.16-Tbps switching capacity and forwarding rate of up to 1.2 bpps for 31108PC-V and 31108TC-V

●  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 ACL entries

●  16,000 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

32

System memory

16 GB

Buffer size

16 MB shared

Boot flash

64 GB SSD (31108PC-V, 31108TC-V, and 31108TCV-32T)

Power

Number of power supplies

2

Power supply types

●  AC (forward and reverse airflow)

●  NXA-PAC-650W-PE and NX-PAC-650W-PI (31108 models)

●  DC (forward and reverse airflow)

●  NXA-PDC-930W-PE and NX-PDC-930W-PI (31108 models)

Typical operating power

●  Cisco Nexus 31108PC-V: 150W

Maximum power

●  Cisco Nexus 31108PC-V: 360W

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

●  33A (400W unit), 78A (930W unit)

●  85 to 88%

Typical heat dissipation

●  Cisco Nexus 31108PC-V: 512 BTU/hr

Maximum heat dissipation

●  Cisco Nexus 31108PC-V: 1228 BTU/hr

Cooling

●  Forward and reverse airflow schemes:

◦    Forward airflow: Port-side exhaust (air enters through fan tray and power supplies and exits through ports)

◦    Reverse airflow: Port-side intake (air enters through ports and exits through fan tray and power supplies)

●  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

●  64.9 dBA

●  69.3 dBA

●  76.7 dBA

Environment

Dimensions
(height x width x depth)

●  Cisco Nexus 31108PC-V, 31108TC-V, and 31108TCV-32T: 1.72 x 17.3 x 22.3 in. (4.4 x 43.9 x 56.6 cm)

Weight

●  Cisco Nexus 31108PC-V: 21.4 lb (9.7 kg)

Operating temperature

●  32 to 104°F (0 to 40°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)