155
Description Specification
Cooling
Forward and reversed airflow schemes:
• Forward airflow: Port-side exhaust (air enters through fan-tray and power supplies and exits
through ports)
• Reversed airflow: Port-side intake (air enters through ports and exits through fan-tray and
power supplies)
• Single fan tray with redundant fans
• Hot swappable (must swap within 1 min)
Environment Dimensions (height x width
x depth)
1.72 x 17.3 x 19.7 in. (4.4 x 43.9 x 50.5 cm)
Weight
20.5 lbs (9.3 kgs)
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
Storage relative humidity
Up to 5 days at max (85%) humidity
Altitude
Recommend ASHRAE data center Environment
Nexus 3048 Switch
Physical
• 1RU fixed form-factor switch
• 48 10/100/1000 Mbps RJ-45 ports
• 4 1/10 Gbps SFP+ uplink ports
• 2 redundant power supplies
• 1 fan tray with redundant fans
• 1 I/O module with management, console, and USB flash memory ports
Performance
• 176 Gbps switching capacity
• Forwarding rate of 132 mpps
• 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
MAC addresses
128,000
Number of VLANS
4096
Spanning-tree instances
• RSTP: 512
• MSTP: 64
ACL entries
2000 ingress
1000 egress
Routing table
16,000 prefixes and 16,000 host entries*
8000 multicast routes*
Number of EtherChannels
52 (with vPC)
Number of ports per
EtherChannel
16
Buffers
9 MB shared
Boot flash memory
2 GB
Power
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