Allied Telesis AT-GS920/16 Installation And User Manual page 75

Gigabit ethernet unmanaged switches
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Disabling Multicast Frame Pass-Through
Perform the following procedure to disable the Multicast Frame
Pass-Through feature:
1. Set DIP switch # 1 to the DOWN position to disable this feature. See
Figure 44.
Figure 44. DIP Switch Settings for Disabling Multicast Frame
2. Turn the power OFF by unplugging the AC power cord and then back
ON again by reconnecting it to the AC outlet on the switch. The new
switch setting is now implemented and effective and the Multicast
Frame Pass-Through is disabled.
Note
A recently changed DIP switch setting becomes effective ONLY
after you turn the switch's AC power OFF and then back ON.
Note
When this feature is disabled, the following multicast addresses are
filtered out and are NOT allowed to pass through the switch:
01-80-C2-00-00-00
01-80-C2-00-00-01
01-80-C2-00-00-02
01-80-C2-00-00-03
01-80-C2-00-00-10
01-80-C2-00-00-20
01-80-C2-00-00-21
Pass-Through
Chapter 4: Switch Configuration
75

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