User's Manual

C HAPTER 1 | Introduction
Overview
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LOOPBACK DETECTION AND PREVENTION
When a loop occurs at a port, the switch will
■
Block the loop port, automatically protecting the switch.
■
Flash the port LED twice every second.
■
Turn the Loop LED on red.
When the loop clears the port LED will cease flashing and the Loop LED will turn
off.
Figure 3: Loopback Detection and Prevention
IGMP SNOOPING V1/V2
The switches support IGMP snooping v1/v2, improving multicast services such
as video streaming, resulting in smoother video reproduction.