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Cisco CATALYST 1924 ENTERPRISE SWITCH Specification Guide

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4 Cisco Product Catalog, February 1999
Table 2
Table 7-21: Environmental Conditions and Power Requirements
Selectable switching option
FragmentFree cut-through-forward after collision window (64 bytes)
Store and forward--forward after packet receipt
Packet forwarding rate for 64-byte
packets
14,880 packets per second (pps) to 10-Mbps ports
148,800 pps to 100BaseT module ports
Up to 100,000 pps to FDDI module ports
Up to 550,500 pps aggregate
 Latency (FragmentFree cut-through
switching mode)
70 microseconds between 10BaseT ports
11 microseconds between 100BaseT ports
 MAC addresses
1024 per system (Catalyst 1900 series)
Unlimited MAC address support on configurable network port
Management
SNMP Management Information Base (MIB) II, SNMP MIB extensions
Station Management (SMT) 7.3, FDDI MIB, Bridging MIB (RFC 1493)
Standards
IEEE 802.3x full duplex on 10BaseT and 100BaseT ports
IEEE 802.3x flow control on 100BaseT ports
IEEE 802.1d Spanning-Tree Protocol
IEEE 802.3u 100BaseTX and 100BaseFX specifications
IEEE 802.3 10BaseT specification
IEEE 802.3 AUI specification
ATM Forum LANE 1.0; UNI 3.0/3.1; RFC 1483
Connectors and Cabling
10-Mbps ports: RJ-45 connectors; two-pair Category 3, 4 or 5 UTP cabling; DB15 connector on AUI port
100BaseTX ports: RJ-45 connectors; two-pair Category 5 UTP cabling
100BaseFX port: SC connector, 50/125- and 62.5/125-micron multimode fiber-optic cabling
Management console port: RJ-45 connector
Rack mount kit included
Indicators
Per-port status LEDs—Link Integrity, Disabled, Activity, and Full-Duplex indications
System status LEDs—System, RPS, Module Enabled, and bandwidth utilization indications
Dimensions
 1.73 x 17.5 x 8.25 in (4.39 x 44.45 x 21 cm)
Weight
7 lb. (3.2 kg)
Characteristic
Description
Operating temperature
 23 to 113˚F (–5 to 45˚C)
Operating relative humidity
 10 to 95% noncondensing
 Operating altitude
 Up to 9842 ft. (3000 m)
 Power consumption
 50W (Catalyst 1900)
 AC input voltage/frequency
90 to 127/200 to 250 VAC (auto-ranging) 50 to 60 Hz
Safety and Electromagnetic Emissions Certifications
UL 1950
CSA 22.2 No. 950
EN 60950
IEC 950
FCC Part 15 Class A, verified to Class B
CE Marking
EN 55022B Class B
VCCI Class II
Characteristic
Description