Cisco Catalyst 2940 Series - Page 11

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Fixed-Conguration Switches
Catalyst 4900 Catalyst 3750-E Catalyst 3750 Catalyst 3650-E
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Cisco Catalyst Family Feature Comparison (continued)
Modular Switches
Model/Series Catalyst 6500 Catalyst 4500
Availability and Resiliency
Switch Redundancy
Virtual Switching System (VSS) •
IOS Software Modularity •
Non-stop Forwarding/Stateful Switchover
(NSF/SSO)
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NSF-aware • •
Redundant Power Supplies • •
Redundant Fans • •
Redundant Fan Trays • •
Redundant Supervisors • •
Generic Online Diagnostics (GOLD) • •
Basic Support for GOLD Services • •
Power Supply Failure Redundancy • •
Power Circuit Failure Redundancy • •
Network Protocols
Unidirectional Link Detection (UDLD) • •
Gateway Load Balancing Protocol (GLBP) • •
Hot Standby Routing Protocol (HSRP) • •
Virtual Router Redundancy Protocol
(VRRP)
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UplinkFast • •
BackBoneFast • •
RSTP (802.1w) • •
PortFast • •
Per VLAN STP (PVSTP) • •
Per VLAN RSTP (PVRSTP) • •
Multiple Instance STP (MISTP) • •
MSTP (802.1s) • •
STP Root Guard • •
BDPU Guard • •
Loop Guard • •
IP Event Dampening • • –12.2 (50)SG
Bidirectional Forwarding Detection •
Introduction