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The Catalyst 1900 series switches deliver the industry`s best value for today`s Ethernet networks. For an extremely low price per port, these switches provide a dedicated 10 Mbps of bandwidth to the desktop and high performance connectivity between hub-based workgroups. All Catalyst 1900 series switches offer unrivaled ease of use through an intuitive and comprehensive Web-based management interface. Standard Edition switches are upgradable to provide unmatched flexibility and scalability when combined with Enterprise Edition software. Enterprise Edition software enables these switches to deliver unmatched network configuration flexibility and scalability through embedded Cisco technologies, delivering comprehensive management and security, bandwidth optimization, networked multimedia, and virtual LAN (VLAN) support. The Enterprise Edition software is pre-installed in Enterprise Edition switches, and available as an Upgrade Kit for Standard Edition switches. Software upgradable to Enterprise Edition 4 models with 12 or 24 10BaseT ports and choice of 2 100BaseT uplinks Full-duplex operation on all Ethernet and Fast Ethernet ports Auto-negotiation on 100BaseTX ports for automatically selecting half-and full-duplex operation Congestion control features including IEEE 802.3x-based flow control, and back-pressure based flow control on 10BaseT ports Web-based network management Reduced footprint: only 8.25 inches deep Twelve or twenty-four 10BaseT ports deliver dedicated 10 Mbps of bandwidth to individual users or workgroups to support bandwidth-intensive applications Tw100BaseT ports eliminate bottlenecks to servers and other network devices One switched Attachment Unit Interface (AUI) port for connecting to fiber or legacy 10Base2 or 10Base5 networks Shared-memory architecture with 3 MB packet buffer virtually eliminates packet loss Non-blocking, ClearChannel architecture supports wire-speed bridging on all ports, delivering up to 370 Mbps maximum forwarding bandwidth, and 550,000 pps aggregate CollisionFree full-duplex operation on switched 10BaseT and 100BaseT ports delivers up to 200 Mbps of bandwidth tend stations, servers and between switches Choice of congestion control options for applications that require zero packet loss: Enhanced congestion control accelerates packet forwarding when the switch buffers are full Back-pressure on half-duplex Ethernet ports throttles network transmission using the IEEE 802.3 Layer 2 back-off algorithm IEEE 802.3x flow control on 100BaseTX ports provides intelligent flow management between switches and between a switch and a server Per-port broadcast storm control prevents faulty end stations from degrading overall system performance with broadcast storms Choice of cut-through or store-and-forward switching lets administrators optimize for performance or error checking Security and Redundancy IEEE 802.1d Spanning-Tree Protocol support for redundant backbone connections and loop-free networks simplifies network configuration and improves fault tolerance User-selectable address learning mode simplifies configuration and enhances security Support for optional Cisco 600 watt redundant AC power system provides a backup power source for up to four units for improved fault tolerance and network uptime Flexible Network Configuration No per-port Media Access Control (MAC) address limitations--provides flexibility to connect to individual users or shared hubs. Support for 1024 MAC addresses on the Catalyst 1900 allows the switch to scale with a growing network Configurable network port that supports unlimited MAC addresses for backbone connectivity Simple Network Management Protocol (SNMP) and Telnet support delivers comprehensive in-band manageability, and a menu-based management console provides in-depth, out-of-band manageability Supports 4 groups of embedded RMON (history, statistics, alarms and events). Support for all nine RMON groups through use of a SwitchProbe Analyzer port that permits traffic monitoring of a single port, a group of ports, or the entire switch from a single network analyzer or RMON probe (Enterprise Edition only). Web-based secured interface allows users to configure and manage the switch from any client on the Internet with a web-browser. Cisco Discovery Protocol (CDP) enables a CiscoWorks network management station to automatically discover the switch in a network topology Autonegotiation on 100BaseTX ports automatically selects half- or full-duplex transmission mode to optimize bandwidth
Figure 20-20: Catalyst 1900 Rear View
Figure 20-21: Catalyst 1900C Front View
Figure 20-22: Catalyst 1912 Front View
Catalyst 1900 Series — Fixed Configuration Ethernet Switches
Product Overview
Key Features and Benefits
Standard Edition Feature Summary
Performance
Management
Figure 20-19: Catalyst 1900 Front View
Specifications
Hardware
|
Description |
Specification |
|---|---|
|
Performance |
1 Gbps bus 370 Mbps maximum forwarding bandwidth 3 MB packet buffer memory dynamically shared by all ports |
|
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) |
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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 |
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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 |
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Indicators |
Per-port status LEDs — Link Integrity, Disabled, Activity, and Full-Duplex indications System status LEDs — System, RPS, Module Enabled, and bandwidth utilization indications |
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Description |
Specification |
|---|---|
|
Power consumption |
50W (Catalyst 1900) |
|
AC input voltage/frequency |
90 to 127/200 to 250 VAC (auto-ranging) 50 to 60 Hz |
|
Description |
Specification |
|---|---|
|
Dimensions (H x W x D) |
1.73 x 17.5 x 8.25 in (4.39 x 44.45 x 21 cm) |
|
Weight |
7 lb (3.2 kg) |
|
Operating temperature |
23 to 113°F (-5 to 45°C) |
|
Operating relative humidity |
10 to 95% noncondensing |
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Operating altitude |
Up to 9842 ft (3000 m) |
|
Description |
Specification |
|---|---|
|
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 |
For information about the Enterprise Edition Software, see "Enterprise Edition Software for the Catalyst 2820 and 1900 Series" section on page 15.
| Part Description | Part Number |
|---|---|
| Catalyst 1900 Workgroup Switches | |
| 12 Port 10BaseT Switch w/2 100BaseTX Ports;Ent Ed Upgradable | WS-C1912-A |
| 12 Port 10BaseTSwitch w/1 100BaseTX;1 100BaseFX;Ent Ed Upgd | WS-C1912C-A |
| 12 Port 10MB Switch 2 100BaseTX Ports, ISL,CGMP,RMON | WS-C1912-EN |
| 12 Port 10Mb Switch 1 100TX, 1 100 FX Port, ISL,CGMP,RMON | WS-C1912C-EN |
| 24 Port 10Mb Switch W/2 100BaseTX Ports; Ent Ed Upgradable | WS-C1924-A |
| 24 Port 10Mb Switch w/1 100BaseTX, 1 100 Base FX;Ent Ed Upgd | WS-C1924C-A |
| 24 Port 10Mb Switch, 2 100BaseTX Ports, ISL,CGMP,RMON | WS-C1924-EN |
| 24 Port 10Mb Switch, 1 100 TX, 1 100 FX Port,ISL,CGMP,RMON | WS-C1924C-EN |
| Catalyst 1900 Enterprise Edition, 24 10BT, 2 TX, DC power | WS-C1924-EN-DC |
| 5 Catalyst 1924-EN Switches | WS-C1924-EN-5PACK |
| 5 Catalyst 1924C-EN Switches | WS-C1924C-EN-5PACK |
| Catalyst 1900 Std Edition with 24 10BT, 2 100BaseFX ports | WS-C1924F-A |
| Catalyst 1900 Ent Edition with 24 10BT, 2 100BaseFX ports | WS-C1924F-EN |
| Catalyst 1900/2820 Enterprise Edition Upgrade Kit | |
| Catalyst 1900/2820 Enterprise Edition Upgrade Kit | WS-C19/28EEUG |
| Catalyst 1900/2820 Enterprise Edition Upgrade Kit, 10-Pack | WS-C19/28UG10 |
All Catalyst 1900 series switches come with a one year limited return to factory warranty that can be extended for a total of three years. SMARTnet and Comprehensive Support Packages are both available. Support options range from help desk assistance to proactive, onsite consultation. All support contracts include major Cisco IOS software updates, full access rights to Cisco Connection Online, and 24-hour-a-day technical assistance. Contact your local sales office for further information.