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
Catalyst
1900 Front View
Catalyst
1900 Rear View
Catalyst
1900C Front View
Catalyst
1912 Front View
Technical
Specifications for the Catalyst 1900
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)
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
