Cisco WS-C4900M Manual page 155

Description Specification
Cooling Forward and reversed airflow schemes:
• Forward airflow: Port-side exhaust (air enters through fan-tray and power supplies and exits
• Reversed airflow: Port-side intake (air enters through ports and exits through fan-tray and
• Single fan tray with redundant fans
• Hot swappable (must swap within 1 min)
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
• 176 Gbps switching capacity
Performance
• 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
through ports)
power supplies)
Dimensions (height x width
x depth)
Weight
Operating temperature
Storage temperature
Operating relative humidity
Storage relative humidity
Altitude
MAC addresses
Number of VLANS
Spanning-tree instances
ACL entries
Routing table
Number of EtherChannels
Number of ports per
EtherChannel
Buffers
Boot flash memory
1.72 x 17.3 x 19.7 in. (4.4 x 43.9 x 50.5 cm)
20.5 lbs (9.3 kgs)
32 to 104° F (0 to 40°C)
-40 to 158° F (-40 to 70°C)
10 to 85% noncondensing
Up to 5 days at max (85%) humidity
Recommend ASHRAE data center Environment
128,000
4096
• RSTP: 512
• MSTP: 64
2000 ingress
1000 egress
16,000 prefixes and 16,000 host entries*
8000 multicast routes*
52 (with vPC)
16
9 MB shared
2 GB
Power
155