
41
Switches
Catalyst 3900 Series Token Ring Switch
Feature Catalyst 3900 Catalyst 3920
Fixed Ports 20 Token Ring 24 Token Ring
Modular Slots 2 None
Available Modules Any 2 of the following:
4-port UTP/STP Token Ring
4-port fiber Token Ring
ATM multimode fiber
2-port UTP/STP Token Ring ISL
2-port multimode fiber Token
Ring ISL
None
Backplane Speed Backplane Bandwidth: 520 Mbps Backplane Bandwidth: 520 Mbps
Stacking Options Up to 8 switches using the
optional stack port module
Up to 8 switches using the built-in
stack port
Full Duplex
Capabilities
All ports All ports support full duplex Token
Ring attachment
VLAN Maximum 63 63
ISL 2 port fiber or copper None
Management
Capabilities
SNMP and out-of-band console,
Telnet, CiscoView, TrafficDirector
SNMP and out-of-band console,
Telnet, CiscoView, TrafficDirector
Embedded RMON With optional RMON feature With optional RMON feature
Special Features • Processors: Intel i960 RISC
processor
• Source-Route Bridging
• Source-Route Transparent
• Source-Route Switching
• Transparent Bridging
• Dedicated Token Ring
• Filtering: MAC, DSAP, SNAP
EtherType
•ATM LANE
•SPAN Port
• Spanning Tree: IEEE and IBM
• Processors: Intel i960 RISC
processor
• Source-Route Bridging
• Source-Route Transparent
• Source-Route Switching
• Transparent Bridging
• Dedicated Token Ring
• Filtering: MAC, DSAP, SNAP
EtherType
•SPAN Port
• Spanning Tree: IEEE and IBM
• Connector for optional RPS unit
Website URL www.cisco.com/warp/customer/729/c3900
qrg-new.book : 2switch.fm Page 41 Monday, June 22, 1998 2:16 PM
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