Specifications

Chapter 2 LAN Switching
2-10
Cisco Catalyst 2970 Series
For More Information
See the Catalyst 2950 Series Web site: http://www.cisco.com/go/catalyst2950
Cisco Catalyst 2970 Series
The Cisco Catalyst 2970 Series switches are affordable Gigabit-to-the-desktop Ethernet
switches that deliver wire-speed intelligent services for small and medium-sized businesses
and enterprise branch offices. Featuring a complete set of intelligent services, the Cisco
Catalyst 2970 Series switches can enhance network performance and increase productivity
for today's knowledge workers by intelligently scaling beyond 100 Mbps.
Specifications
For More Information
See the Catalyst 2970 Web site: http://www.cisco.com/go/catalyst2970
Feature Catalyst 2970
Performance
Forwarding bandwidth: 28 Gbps (Cisco Catalyst 2970G-24TS), 24 Gbps (Cisco Catalyst
2970G24T)
Forwarding rate based on 64-byte packets: 38.7 Mpps (Cisco Catalyst 2970G-24TS), 35.7
Mpps (Cisco Catalyst 2970G-24T)
128 MB DRAM and 16 MB flash memory
Up to 8000 MAC addresses configurable
Up to 1000 IGMP groups and bridging entries configurable
Configurable maximum transmission unit (MTU) of up to 9018 bytes (jumbo frames) for
bridging on Gigabit Ethernet ports, and up to 1546 bytes for bridging on Fast Ethernet ports
Connectors and cabling
10BASE-T ports: RJ-45 connectors; 2-pair Category 3, 4, or 5 unshielded twisted-pair (UTP)
cabling
100BASE-TX ports: RJ-45 connectors; 2-pair Category 5 UTP cabling
1000BASE-T ports: RJ-45 connectors; 2-pair Category 5 UTP cabling
1000BASE-T SFP-based ports: RJ-45 connectors, 2-pair Category 5 UTP cabling
1000BASE-SX, -LX/LH, -ZX, and CWDM SFP-based ports: LC fiber connectors (single-mode
or multimode fiber)
Management console port: RJ-45-to-DB9 cable for PC connections
Indicators
Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications.
System-status LEDs: system, RPS, and bandwidth-utilization indications
Predicted mean time between failure (MTBF)
163,222 hrs (Cisco Catalyst 2970G-24TS)
219,108 hrs (Cisco Catalyst 2970G-24T)
Power connectors
Customers can provide power to a switch by using either the internal power supply or the
Cisco RPS 675. The connectors are located at the back of the switch.
Internal Power Supply Connector
Customers can provide power to a switch by using either the internal power supply or the
Cisco RPS 675. The connectors are located at the back of the switch.
Internal Power Supply Connector
• The internal power supply is an autoranging unit.
• The internal power supply supports input voltages between 100 and 240 VAC.
• Use the supplied AC power cord to connect the AC power connector to an AC power
outlet.
• Cisco RPS 675 Connector
• Offers connection for an optional Cisco RPS 675 that uses AC input and supplies DC output
to the switch.
• Offers a 675 W RPS that supports up to 6 external network devices and provides power to
1 failed device at a time.
• Automatically senses when the internal power supply of a connected device fails and
provides power to the failed device, preventing loss of network traffic.
• Only the Cisco RPS 675 (Model PWR675-AC-RPS-N1=) should be attached to the RPS
receptacle.
Power consumption
165 W (maximum), 563 BTUs per hour (Cisco Catalyst 2970G-24TS)
135 W (maximum), 460 BTUs per hour (Cisco Catalyst 2970G-24T)
AC input voltage/frequency
100 to 127 or 200 to 240 VAC (autoranging), 50 to 60 Hz
DC input voltages
RPS input+12 V at 17 A (Cisco Catalyst 2970G-24TS)
+12 V at 13 A (Cisco Catalyst 2970G-24T)
Dimensions (H x W x D)
Cisco Catalyst 2970G-24TS: 2.59 x 17.5 x 11.6 in. (6.58 x 44.5 x 29.5 cm)
Cisco Catalyst 2970G-24T: 1.73 x 17.5 x 12.83 in. (4.39 x 44.5 x 32.6 cm)
Weight
Cisco Catalyst 2970G-24TS: 12.5 lb (5.68 kg)
Cisco Catalyst 2970G-24T: 10 lb (4.54 kg)