Cisco WS-C3550-12G Manual page 24

Introduction
Cisco Campus Feature Comparison
Modular Switches
Model/Series
Availability and Resiliency
Switch Redundancy
Virtual Switching System (VSS)
Virtual Port Channel (vPC)
Software Modularity
Non-stop Forwarding/Stateful Switchover
(NSF/SSO)
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
StackWise Plus
StackPower
Network Protocols
Unidirectional Link Detection (UDLD)
Gateway Load Balancing Protocol (GLBP)
Hot Standby Routing Protocol (HSRP)
Virtual Router Redundancy Protocol
(VRRP)
UplinkFast
Backbone Fast
RSTP (802. 1 w)
PortFast
Per VLAN STP (PVSTP)
Per VLAN RSTP (PVRSTP)
Multiple Instance STP (MISTP)
MSTP (802. 1 s)
STP Root Guard
BDPU Guard
Loop Guard
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Nexus 7000 Catalyst 6500
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Catalyst 4500
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