Cisco Catalyst 3900 Series - Cisco RJ-45-to-AUX Brochure

Gigabit Ethernet ports for GBIC Ethernet aggregation. It also has built−in support for Voice Over IP
telephony, in addition to built−in support for up to 250 port−based VLANs and ISL VTP.
In addition, the 3500 series supports many of the features of the 1900 and 2900 series, such as DNS and
DHCP. The series is offered in both Standard and Enterprise Editions. Table E.6 shows the features of the
Catalyst 3500 series.
Table E.6: The Cisco Catalyst 3500 series key switching features.
Feature 3512
10/100 ports 12
GBIC ports 2
Enterprise Edition Yes
Standard Edition Yes
Backplane 10.8Gbps
Flash 4MB
DRAM 8MB
Stackable Yes
Forwarding Rate 4.8 million pps

Cisco Catalyst 3900 Series

The Catalyst 3900 and 3920 are low−cost solutions for Token Ring users to migrate from a shared−media hub
to a switched environment. Like the 3500 series, the 3900 is a stackable switch with the ability to provide a
variety of high−speed uplinks, network management, and support for multiple VLANs.
The Catalyst 3900 provides an ISL module for connections between wiring closets. This module consists of
two ports, which can be either fiber or copper. Two feature cards can be used in the 3900. This link can
provide up to 100Mbps uplink connectivity. Also supported is an ATM module that provides Token Ring
users with ATM access to campus backbones. The module provides a single 155Mbps connection with a
multimode fiber interface. In addition, optional four−port Token Ring modules can be added to the expansion
ports in the Catalyst 3900. These cards allow for expansion of up to 28 Token Ring ports. Up to eight units
can be stacked using the optional stack port module and the Catalyst Matrix, for a total of 224 Token Ring
ports. The four−port fiber module supports IEEE 802.5J standard for ring−in/ring−out (RI/RO) and the fiber
lobe attachment of end stations.
The Catalyst Switch Matrix is an eight−port interface that connects up to eight Catalyst 3900 series switches.
A Cisco Catalyst 3900 has the ability to detect if it is connected to another Catalyst 3900 switch that is
connected to a Catalyst Matrix. The connected Catalyst 3900 series switches then connect in the switch block
to make a stack that logically appears to be one switch.
One of the great features of the Catalyst Matrix in the 3900 series is the switch's ability to connect any
combination of up to eight Catalyst 3900 switches or to remove any one switch without needing to have the
power cycled or turned off. A Cisco Systems proprietary shielded cable (1 meter long, with a 50−pin
connector at each end) is used to connect the switches participating in the switch stack. The cable uses
cross−over wiring so either end can be used for either side of the connection. The cable plugs into a stack port
I/O connector on the back of each Catalyst Matrix. The other end of the cable is plugged into a Catalyst stack
port module interface card that is installed in an expansion slot on another Catalyst 3900 series switch.
The 3900 series supports three types of bridging:
Source Route Bridging (SRB)
Source Route Transparent Bridging (SRT)
Source Route Switched Bridging
3524 3548
24 48
2 2
Yes Yes
Yes Yes
10.8Gbps 10.8Gbps
4MB 4MB
8MB 16MB
Yes Yes
6.5 million pps 8.8 million pps
363
3508
0
8
Yes
Yes
10Gbps
4MB
8MB
Yes
7.5 million pps