Guidelines For Loop Prevention - Allied Telesis AT-GS920/16 Installation And User Manual

GS920 Series Gigabit Ehternet Switch Installation and User's Guide

Guidelines for Loop Prevention

Here are guidelines for enabling Loop Prevention:
– Loop Prevention does not function properly when Flow Control is
enabled. You Flow Control must disabled when Loop Prevention is
enabled.
– When a loop is detected and a port is blocked, the switch does not
flood packets even when Flooding is enabled.
– A port receives Loop Prevention frames even when the port is
blocked.
– The AT-GS920/8 switch with Loop Prevention-enabled ignores a
Loop Prevention frame if its hop count exceeds 32.
– The AT-GS920/16 and AT-GS920/24 switch with Loop
Prevention-enabled ignores a Loop Prevention frame if its hop
count exceeds 10
– Allied Telesis recommends designing the network with 10 or less
cascade levels when building a Loop Prevention-enabled network.
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