Cisco Systems 2950-12 Switch User Manual


 
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Standards IEEE 802.1x support
IEEE 802.3x full duplex on 10BASE-T and 100BASE-TX ports
IEEE 802.1D Spanning-Tree Protocol
IEEE 802.1p class-of-service (CoS) prioritization
IEEE 802.1Q VLAN
IEEE 802.3 10BASE-T specification
IEEE 802.3u 100BASE-TX specification
IEEE 802.3ad
IEEE 802.3z 1000BASE-X specification
Connectors
and cabling
10BASE-T ports: RJ-45 connectors, two-pair Category 3, 4, or 5 unshielded twisted-pair (UTP)
cabling
100BASE-TX ports: RJ-45 connectors; two-pair Category 5 UTP cabling
1000BASE-SX ports: MT-RJ connectors, up to 1800 feet (550 meters) cable distance for 50/125
or up to 900 ft (275 m) cable distance for 62.5/125 micron multimode fiber-optic cabling
Management console port: 8-pin RJ-45 connector, RJ-45-to-DB9 adapter cable for PC
connections; for terminal connections, use RJ-45-to-DB25 female data-terminal-equipment
(DTE) adapter (can be ordered separately, Cisco part number ACS-DSBUASYN=)
MT-RJ patch
cables for
Cisco Catalyst
2950SX-24
Switch
Type of cable, Cisco part number:
1-meter MT-RJ-to-SC multimode cable, CAB-MTRJ-SC-MM-1M
3-meter MT-RJ-to-SC multimode cable, CAB-MTRJ-SC-MM-3M
5-meter MT-RJ-to-SC multimode cable, CAB-MTRJ-SC-MM-5M
1-meter MT-RJ-to-ST multimode cable, CAB-MTRJ-ST-MM-1M
3-meter MT-RJ-to-ST multimode cable, CAB-MTRJ-ST-MM-3M
5-meter MT-RJ-to-ST multimode cable, CAB-MTRJ-ST-MM-5M
Power
connectors
Customers can provide power to a switch by using the internal power supply, the Cisco RPS 675
Redundant Power System. The connectors are located at the back of the switch.
Internal power supply connector:
The internal power supply is an auto-ranging 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:
The connector offers connection for an optional Cisco RPS 675 that uses AC input and supplies
DC output to the switch.
The connector offers a 675W redundant power system that supports six external network
devices and provides power to one failed device at a time.
The connector automatically senses when the internal power supply of a connected device
fails and provides power to the failed device, preventing loss of network traffic.
Attach only the Cisco RPS 675 (Model PWR675-AC-RPS-NI=) to the redundant power supply
receptacle with this connector.
Indicators Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications
System status LEDs: system, RPS, and bandwidth-utilization indications
Dimensions
and weight
(H x W x D)
1.72 x 17.5 x 9.52 in. (4.36 x 44.45 x 24.18 cm) (Cisco Catalyst 2950SX-24, 2950-24, 2950-12)
1.72 x 17.5 x 13 in. (4.36 x 44.45 x 33.02 cm) (Cisco Catalyst 2950SX-48, 2950T-48)
1 RU high (1.72 in./4.36 cm)
6.5 lb (3.0 kg) (Cisco Catalyst 2950SX-24, 2950-24, 2950-12)
10.b lb (4.8 kg) (Cisco Catalyst 2950SX-48, 2950T-48)
Feature Description/Part Numbers